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fs/cifs/cifssmb.c
192 KB
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/* * fs/cifs/cifssmb.c * |
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* Copyright (C) International Business Machines Corp., 2002,2010 |
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* Author(s): Steve French (sfrench@us.ibm.com) * * Contains the routines for constructing the SMB PDUs themselves * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published * by the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ /* These are mostly routines that operate on a pathname, or on a tree id */ /* (mounted volume), but there are eight handle based routines which must be */ |
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/* treated slightly differently for reconnection purposes since we never */ /* want to reuse a stale file handle and only the caller knows the file info */ |
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#include <linux/fs.h> #include <linux/kernel.h> #include <linux/vfs.h> |
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#include <linux/slab.h> |
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#include <linux/posix_acl_xattr.h> |
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#include <linux/pagemap.h> |
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#include <linux/swap.h> #include <linux/task_io_accounting_ops.h> |
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#include <asm/uaccess.h> #include "cifspdu.h" #include "cifsglob.h" |
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#include "cifsacl.h" |
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#include "cifsproto.h" #include "cifs_unicode.h" #include "cifs_debug.h" |
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#include "fscache.h" |
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#ifdef CONFIG_CIFS_POSIX static struct { int index; char *name; } protocols[] = { |
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#ifdef CONFIG_CIFS_WEAK_PW_HASH {LANMAN_PROT, "\2LM1.2X002"}, |
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{LANMAN2_PROT, "\2LANMAN2.1"}, |
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#endif /* weak password hashing for legacy clients */ |
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{CIFS_PROT, "\2NT LM 0.12"}, |
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{POSIX_PROT, "\2POSIX 2"}, |
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{BAD_PROT, "\2"} }; #else static struct { int index; char *name; } protocols[] = { |
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#ifdef CONFIG_CIFS_WEAK_PW_HASH {LANMAN_PROT, "\2LM1.2X002"}, |
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{LANMAN2_PROT, "\2LANMAN2.1"}, |
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#endif /* weak password hashing for legacy clients */ |
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{CIFS_PROT, "\2NT LM 0.12"}, |
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{BAD_PROT, "\2"} }; #endif |
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/* define the number of elements in the cifs dialect array */ #ifdef CONFIG_CIFS_POSIX #ifdef CONFIG_CIFS_WEAK_PW_HASH |
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#define CIFS_NUM_PROT 4 |
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#else #define CIFS_NUM_PROT 2 #endif /* CIFS_WEAK_PW_HASH */ #else /* not posix */ #ifdef CONFIG_CIFS_WEAK_PW_HASH |
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#define CIFS_NUM_PROT 3 |
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#else #define CIFS_NUM_PROT 1 #endif /* CONFIG_CIFS_WEAK_PW_HASH */ #endif /* CIFS_POSIX */ |
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/* * Mark as invalid, all open files on tree connections since they * were closed when session to server was lost. */ void cifs_mark_open_files_invalid(struct cifs_tcon *tcon) |
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{ struct cifsFileInfo *open_file = NULL; |
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struct list_head *tmp; struct list_head *tmp1; |
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/* list all files open on tree connection and mark them invalid */ |
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spin_lock(&cifs_file_list_lock); |
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list_for_each_safe(tmp, tmp1, &tcon->openFileList) { |
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open_file = list_entry(tmp, struct cifsFileInfo, tlist); |
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open_file->invalidHandle = true; |
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open_file->oplock_break_cancelled = true; |
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} |
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spin_unlock(&cifs_file_list_lock); |
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/* * BB Add call to invalidate_inodes(sb) for all superblocks mounted * to this tcon. */ |
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} |
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/* reconnect the socket, tcon, and smb session if needed */ static int |
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cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
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{ |
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int rc; |
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struct cifs_ses *ses; |
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struct TCP_Server_Info *server; struct nls_table *nls_codepage; /* * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for * tcp and smb session status done differently for those three - in the * calling routine */ if (!tcon) return 0; ses = tcon->ses; server = ses->server; /* * only tree disconnect, open, and write, (and ulogoff which does not * have tcon) are allowed as we start force umount */ if (tcon->tidStatus == CifsExiting) { if (smb_command != SMB_COM_WRITE_ANDX && smb_command != SMB_COM_OPEN_ANDX && smb_command != SMB_COM_TREE_DISCONNECT) { |
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cifs_dbg(FYI, "can not send cmd %d while umounting ", smb_command); |
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return -ENODEV; } } |
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/* * Give demultiplex thread up to 10 seconds to reconnect, should be * greater than cifs socket timeout which is 7 seconds */ while (server->tcpStatus == CifsNeedReconnect) { wait_event_interruptible_timeout(server->response_q, |
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(server->tcpStatus != CifsNeedReconnect), 10 * HZ); |
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|
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/* are we still trying to reconnect? */ |
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if (server->tcpStatus != CifsNeedReconnect) break; /* * on "soft" mounts we wait once. Hard mounts keep * retrying until process is killed or server comes * back on-line */ |
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if (!tcon->retry) { |
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cifs_dbg(FYI, "gave up waiting on reconnect in smb_init "); |
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return -EHOSTDOWN; } } if (!ses->need_reconnect && !tcon->need_reconnect) return 0; nls_codepage = load_nls_default(); /* * need to prevent multiple threads trying to simultaneously * reconnect the same SMB session */ |
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mutex_lock(&ses->session_mutex); |
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rc = cifs_negotiate_protocol(0, ses); if (rc == 0 && ses->need_reconnect) |
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rc = cifs_setup_session(0, ses, nls_codepage); /* do we need to reconnect tcon? */ if (rc || !tcon->need_reconnect) { |
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mutex_unlock(&ses->session_mutex); |
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goto out; } |
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cifs_mark_open_files_invalid(tcon); |
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rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage); |
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mutex_unlock(&ses->session_mutex); |
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cifs_dbg(FYI, "reconnect tcon rc = %d ", rc); |
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if (rc) goto out; |
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atomic_inc(&tconInfoReconnectCount); /* tell server Unix caps we support */ if (ses->capabilities & CAP_UNIX) reset_cifs_unix_caps(0, tcon, NULL, NULL); /* * Removed call to reopen open files here. It is safer (and faster) to * reopen files one at a time as needed in read and write. * * FIXME: what about file locks? don't we need to reclaim them ASAP? */ out: /* * Check if handle based operation so we know whether we can continue * or not without returning to caller to reset file handle */ switch (smb_command) { case SMB_COM_READ_ANDX: case SMB_COM_WRITE_ANDX: case SMB_COM_CLOSE: case SMB_COM_FIND_CLOSE2: case SMB_COM_LOCKING_ANDX: rc = -EAGAIN; } unload_nls(nls_codepage); return rc; } |
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/* Allocate and return pointer to an SMB request buffer, and set basic SMB information in the SMB header. If the return code is zero, this function must have filled in request_buf pointer */ |
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static int |
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small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
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void **request_buf) |
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{ |
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int rc; |
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rc = cifs_reconnect_tcon(tcon, smb_command); |
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if (rc) |
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return rc; *request_buf = cifs_small_buf_get(); if (*request_buf == NULL) { /* BB should we add a retry in here if not a writepage? */ return -ENOMEM; } |
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header_assemble((struct smb_hdr *) *request_buf, smb_command, |
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tcon, wct); |
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if (tcon != NULL) cifs_stats_inc(&tcon->num_smbs_sent); |
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return 0; |
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} |
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int |
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small_smb_init_no_tc(const int smb_command, const int wct, |
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struct cifs_ses *ses, void **request_buf) |
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{ int rc; |
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struct smb_hdr *buffer; |
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rc = small_smb_init(smb_command, wct, NULL, request_buf); |
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if (rc) |
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return rc; |
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buffer = (struct smb_hdr *)*request_buf; |
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buffer->Mid = get_next_mid(ses->server); |
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if (ses->capabilities & CAP_UNICODE) buffer->Flags2 |= SMBFLG2_UNICODE; |
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if (ses->capabilities & CAP_STATUS32) |
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buffer->Flags2 |= SMBFLG2_ERR_STATUS; /* uid, tid can stay at zero as set in header assemble */ |
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/* BB add support for turning on the signing when |
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this function is used after 1st of session setup requests */ return rc; } |
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/* If the return code is zero, this function must fill in request_buf pointer */ static int |
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__smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
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void **request_buf, void **response_buf) |
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{ |
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*request_buf = cifs_buf_get(); if (*request_buf == NULL) { /* BB should we add a retry in here if not a writepage? */ return -ENOMEM; } /* Although the original thought was we needed the response buf for */ /* potential retries of smb operations it turns out we can determine */ /* from the mid flags when the request buffer can be resent without */ /* having to use a second distinct buffer for the response */ |
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if (response_buf) |
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*response_buf = *request_buf; |
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header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, |
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wct); |
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if (tcon != NULL) cifs_stats_inc(&tcon->num_smbs_sent); |
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return 0; } /* If the return code is zero, this function must fill in request_buf pointer */ static int |
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smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
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void **request_buf, void **response_buf) { int rc; rc = cifs_reconnect_tcon(tcon, smb_command); if (rc) return rc; return __smb_init(smb_command, wct, tcon, request_buf, response_buf); } static int |
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smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
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void **request_buf, void **response_buf) { if (tcon->ses->need_reconnect || tcon->need_reconnect) return -EHOSTDOWN; return __smb_init(smb_command, wct, tcon, request_buf, response_buf); |
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} |
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static int validate_t2(struct smb_t2_rsp *pSMB) |
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{ |
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unsigned int total_size; /* check for plausible wct */ if (pSMB->hdr.WordCount < 10) goto vt2_err; |
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/* check for parm and data offset going beyond end of smb */ |
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if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) goto vt2_err; |
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total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); if (total_size >= 512) goto vt2_err; |
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/* check that bcc is at least as big as parms + data, and that it is * less than negotiated smb buffer */ |
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total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); if (total_size > get_bcc(&pSMB->hdr) || total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) goto vt2_err; return 0; vt2_err: |
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cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
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sizeof(struct smb_t2_rsp) + 16); |
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return -EINVAL; |
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} |
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static int |
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decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
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{ int rc = 0; u16 count; char *guid = pSMBr->u.extended_response.GUID; |
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struct TCP_Server_Info *server = ses->server; |
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count = get_bcc(&pSMBr->hdr); if (count < SMB1_CLIENT_GUID_SIZE) return -EIO; spin_lock(&cifs_tcp_ses_lock); if (server->srv_count > 1) { spin_unlock(&cifs_tcp_ses_lock); if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { cifs_dbg(FYI, "server UID changed "); memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); } } else { spin_unlock(&cifs_tcp_ses_lock); memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); } if (count == SMB1_CLIENT_GUID_SIZE) { |
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server->sec_ntlmssp = true; |
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} else { count -= SMB1_CLIENT_GUID_SIZE; rc = decode_negTokenInit( pSMBr->u.extended_response.SecurityBlob, count, server); if (rc != 1) return -EINVAL; |
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} return 0; } |
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int |
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cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) |
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{ |
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bool srv_sign_required = server->sec_mode & server->vals->signing_required; bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled; |
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bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN; /* * Is signing required by mnt options? If not then check * global_secflags to see if it is there. */ if (!mnt_sign_required) mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN); /* * If signing is required then it's automatically enabled too, * otherwise, check to see if the secflags allow it. */ mnt_sign_enabled = mnt_sign_required ? mnt_sign_required : (global_secflags & CIFSSEC_MAY_SIGN); /* If server requires signing, does client allow it? */ if (srv_sign_required) { if (!mnt_sign_enabled) { cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!"); return -ENOTSUPP; |
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} |
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server->sign = true; } /* If client requires signing, does server allow it? */ if (mnt_sign_required) { if (!srv_sign_enabled) { cifs_dbg(VFS, "Server does not support signing!"); return -ENOTSUPP; } server->sign = true; |
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} return 0; } |
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#ifdef CONFIG_CIFS_WEAK_PW_HASH static int |
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decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
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{ __s16 tmp; struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT) return -EOPNOTSUPP; |
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server->sec_mode = le16_to_cpu(rsp->SecurityMode); server->maxReq = min_t(unsigned int, le16_to_cpu(rsp->MaxMpxCount), cifs_max_pending); set_credits(server, server->maxReq); server->maxBuf = le16_to_cpu(rsp->MaxBufSize); |
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/* even though we do not use raw we might as well set this accurately, in case we ever find a need for it */ if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { server->max_rw = 0xFF00; server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; } else { server->max_rw = 0;/* do not need to use raw anyway */ server->capabilities = CAP_MPX_MODE; } tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); if (tmp == -1) { /* OS/2 often does not set timezone therefore * we must use server time to calc time zone. * Could deviate slightly from the right zone. * Smallest defined timezone difference is 15 minutes * (i.e. Nepal). Rounding up/down is done to match * this requirement. */ int val, seconds, remain, result; struct timespec ts, utc; utc = CURRENT_TIME; ts = cnvrtDosUnixTm(rsp->SrvTime.Date, rsp->SrvTime.Time, 0); cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d ", (int)ts.tv_sec, (int)utc.tv_sec, (int)(utc.tv_sec - ts.tv_sec)); val = (int)(utc.tv_sec - ts.tv_sec); seconds = abs(val); result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; remain = seconds % MIN_TZ_ADJ; if (remain >= (MIN_TZ_ADJ / 2)) result += MIN_TZ_ADJ; if (val < 0) result = -result; server->timeAdj = result; } else { server->timeAdj = (int)tmp; server->timeAdj *= 60; /* also in seconds */ } cifs_dbg(FYI, "server->timeAdj: %d seconds ", server->timeAdj); /* BB get server time for time conversions and add code to use it and timezone since this is not UTC */ if (rsp->EncryptionKeyLength == cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { memcpy(server->cryptkey, rsp->EncryptionKey, CIFS_CRYPTO_KEY_SIZE); } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { return -EIO; /* need cryptkey unless plain text */ } cifs_dbg(FYI, "LANMAN negotiated "); return 0; } #else static inline int |
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decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) |
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{ cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support "); return -EOPNOTSUPP; } #endif |
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static bool |
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should_set_ext_sec_flag(enum securityEnum sectype) |
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{ |
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switch (sectype) { case RawNTLMSSP: case Kerberos: |
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return true; |
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case Unspecified: if (global_secflags & (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) return true; /* Fallthrough */ default: return false; } |
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} |
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int |
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CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses) |
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{ NEGOTIATE_REQ *pSMB; NEGOTIATE_RSP *pSMBr; int rc = 0; int bytes_returned; |
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540 |
int i; |
3534b8508
|
541 |
struct TCP_Server_Info *server = ses->server; |
1da177e4c
|
542 |
u16 count; |
3534b8508
|
543 544 545 546 |
if (!server) { WARN(1, "%s: server is NULL! ", __func__); return -EIO; |
1da177e4c
|
547 |
} |
3534b8508
|
548 |
|
1da177e4c
|
549 550 551 552 |
rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
750d1151a
|
553 |
|
882573606
|
554 |
pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc9
|
555 |
pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689dd
|
556 |
|
3f618223d
|
557 |
if (should_set_ext_sec_flag(ses->sectype)) { |
9193400b6
|
558 |
cifs_dbg(FYI, "Requesting extended security."); |
ac6839246
|
559 560 |
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; } |
50c2f7538
|
561 |
|
3979877e5
|
562 |
count = 0; |
50c2f7538
|
563 |
for (i = 0; i < CIFS_NUM_PROT; i++) { |
3979877e5
|
564 565 566 567 |
strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); count += strlen(protocols[i].name) + 1; /* null at end of source and target buffers anyway */ } |
be8e3b004
|
568 |
inc_rfc1001_len(pSMB, count); |
1da177e4c
|
569 570 571 572 |
pSMB->ByteCount = cpu_to_le16(count); rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
50c2f7538
|
573 |
if (rc != 0) |
254e55ed0
|
574 |
goto neg_err_exit; |
9bf67e516
|
575 |
server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be0
|
576 577 |
cifs_dbg(FYI, "Dialect: %d ", server->dialect); |
254e55ed0
|
578 |
/* Check wct = 1 error case */ |
9bf67e516
|
579 |
if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) { |
254e55ed0
|
580 |
/* core returns wct = 1, but we do not ask for core - otherwise |
50c2f7538
|
581 |
small wct just comes when dialect index is -1 indicating we |
254e55ed0
|
582 583 584 |
could not negotiate a common dialect */ rc = -EOPNOTSUPP; goto neg_err_exit; |
790fe579f
|
585 |
} else if (pSMBr->hdr.WordCount == 13) { |
e598d1d8f
|
586 |
server->negflavor = CIFS_NEGFLAVOR_LANMAN; |
3f618223d
|
587 |
rc = decode_lanman_negprot_rsp(server, pSMBr); |
9ddec5613
|
588 |
goto signing_check; |
790fe579f
|
589 |
} else if (pSMBr->hdr.WordCount != 17) { |
254e55ed0
|
590 591 592 593 |
/* unknown wct */ rc = -EOPNOTSUPP; goto neg_err_exit; } |
2190eca1d
|
594 |
/* else wct == 17, NTLM or better */ |
96daf2b09
|
595 596 |
server->sec_mode = pSMBr->SecurityMode; if ((server->sec_mode & SECMODE_USER) == 0) |
f96637be0
|
597 598 |
cifs_dbg(FYI, "share mode security "); |
bdc4bf6e8
|
599 |
|
254e55ed0
|
600 601 |
/* one byte, so no need to convert this or EncryptionKeyLen from little endian */ |
10b9b98e4
|
602 603 |
server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), cifs_max_pending); |
452757897
|
604 |
set_credits(server, server->maxReq); |
254e55ed0
|
605 |
/* probably no need to store and check maxvcs */ |
c974befa4
|
606 |
server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
eca6acf91
|
607 |
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be0
|
608 609 |
cifs_dbg(NOISY, "Max buf = %d ", ses->server->maxBuf); |
254e55ed0
|
610 |
server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e55
|
611 612 |
server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); server->timeAdj *= 60; |
31d9e2bd5
|
613 |
|
e598d1d8f
|
614 615 |
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { server->negflavor = CIFS_NEGFLAVOR_UNENCAP; |
d3ba50b17
|
616 |
memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed0
|
617 |
CIFS_CRYPTO_KEY_SIZE); |
f291095f3
|
618 619 |
} else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || server->capabilities & CAP_EXTENDED_SECURITY) { |
e598d1d8f
|
620 |
server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223d
|
621 |
rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8f
|
622 |
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9e
|
623 |
rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8f
|
624 625 |
} else { server->negflavor = CIFS_NEGFLAVOR_UNENCAP; |
254e55ed0
|
626 |
server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8f
|
627 |
} |
254e55ed0
|
628 629 |
signing_check: |
9ddec5613
|
630 |
if (!rc) |
38d77c50b
|
631 |
rc = cifs_enable_signing(server, ses->sign); |
50c2f7538
|
632 |
neg_err_exit: |
4a6d87f1d
|
633 |
cifs_buf_release(pSMB); |
254e55ed0
|
634 |
|
f96637be0
|
635 636 |
cifs_dbg(FYI, "negprot rc %d ", rc); |
1da177e4c
|
637 638 639 640 |
return rc; } int |
2e6e02ab6
|
641 |
CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4c
|
642 643 |
{ struct smb_hdr *smb_buffer; |
1da177e4c
|
644 |
int rc = 0; |
1da177e4c
|
645 |
|
f96637be0
|
646 647 |
cifs_dbg(FYI, "In tree disconnect "); |
1da177e4c
|
648 |
|
f1987b44f
|
649 650 651 |
/* BB: do we need to check this? These should never be NULL. */ if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) return -EIO; |
1da177e4c
|
652 |
|
f1987b44f
|
653 654 655 656 657 658 |
/* * No need to return error on this operation if tid invalidated and * closed on server already e.g. due to tcp session crashing. Also, * the tcon is no longer on the list, so no need to take lock before * checking this. */ |
268875b9d
|
659 |
if ((tcon->need_reconnect) || (tcon->ses->need_reconnect)) |
50c2f7538
|
660 |
return 0; |
1da177e4c
|
661 |
|
50c2f7538
|
662 |
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c6
|
663 |
(void **)&smb_buffer); |
f1987b44f
|
664 |
if (rc) |
1da177e4c
|
665 |
return rc; |
133672efb
|
666 |
|
792af7b05
|
667 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
1da177e4c
|
668 |
if (rc) |
f96637be0
|
669 670 |
cifs_dbg(FYI, "Tree disconnect failed %d ", rc); |
1da177e4c
|
671 |
|
50c2f7538
|
672 |
/* No need to return error on this operation if tid invalidated and |
f1987b44f
|
673 |
closed on server already e.g. due to tcp session crashing */ |
1da177e4c
|
674 675 676 677 678 |
if (rc == -EAGAIN) rc = 0; return rc; } |
766fdbb57
|
679 680 681 682 683 684 685 686 687 688 689 |
/* * This is a no-op for now. We're not really interested in the reply, but * rather in the fact that the server sent one and that server->lstrp * gets updated. * * FIXME: maybe we should consider checking that the reply matches request? */ static void cifs_echo_callback(struct mid_q_entry *mid) { struct TCP_Server_Info *server = mid->callback_data; |
5fb4e288a
|
690 |
mutex_lock(&server->srv_mutex); |
766fdbb57
|
691 |
DeleteMidQEntry(mid); |
5fb4e288a
|
692 |
mutex_unlock(&server->srv_mutex); |
a891f0f89
|
693 |
add_credits(server, 1, CIFS_ECHO_OP); |
766fdbb57
|
694 695 696 697 698 699 700 |
} int CIFSSMBEcho(struct TCP_Server_Info *server) { ECHO_REQ *smb; int rc = 0; |
fcc31cb6f
|
701 |
struct kvec iov; |
fec344e3f
|
702 703 |
struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; |
766fdbb57
|
704 |
|
f96637be0
|
705 706 |
cifs_dbg(FYI, "In echo request "); |
766fdbb57
|
707 708 709 710 711 712 |
rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); if (rc) return rc; /* set up echo request */ |
5443d130a
|
713 |
smb->hdr.Tid = 0xffff; |
99d86c8f1
|
714 715 |
smb->hdr.WordCount = 1; put_unaligned_le16(1, &smb->EchoCount); |
820a803ff
|
716 |
put_bcc(1, &smb->hdr); |
766fdbb57
|
717 |
smb->Data[0] = 'a'; |
be8e3b004
|
718 |
inc_rfc1001_len(smb, 3); |
fcc31cb6f
|
719 720 |
iov.iov_base = smb; iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; |
766fdbb57
|
721 |
|
fec344e3f
|
722 |
rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, |
a891f0f89
|
723 |
server, CIFS_ASYNC_OP | CIFS_ECHO_OP); |
766fdbb57
|
724 |
if (rc) |
f96637be0
|
725 726 |
cifs_dbg(FYI, "Echo request failed: %d ", rc); |
766fdbb57
|
727 728 729 730 731 |
cifs_small_buf_release(smb); return rc; } |
1da177e4c
|
732 |
int |
58c45c58a
|
733 |
CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4c
|
734 |
{ |
1da177e4c
|
735 736 |
LOGOFF_ANDX_REQ *pSMB; int rc = 0; |
1da177e4c
|
737 |
|
f96637be0
|
738 739 |
cifs_dbg(FYI, "In SMBLogoff for session disconnect "); |
3b7952109
|
740 |
|
14fbf50d6
|
741 742 743 744 745 746 |
/* * BB: do we need to check validity of ses and server? They should * always be valid since we have an active reference. If not, that * should probably be a BUG() */ if (!ses || !ses->server) |
3b7952109
|
747 |
return -EIO; |
d7b619cf5
|
748 |
mutex_lock(&ses->session_mutex); |
3b7952109
|
749 750 751 |
if (ses->need_reconnect) goto session_already_dead; /* no need to send SMBlogoff if uid already closed due to reconnect */ |
1da177e4c
|
752 753 |
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); if (rc) { |
d7b619cf5
|
754 |
mutex_unlock(&ses->session_mutex); |
1da177e4c
|
755 756 |
return rc; } |
882573606
|
757 |
pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344f
|
758 |
|
38d77c50b
|
759 760 |
if (ses->server->sign) pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1da177e4c
|
761 762 763 764 |
pSMB->hdr.Uid = ses->Suid; pSMB->AndXCommand = 0xFF; |
792af7b05
|
765 |
rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
3b7952109
|
766 |
session_already_dead: |
d7b619cf5
|
767 |
mutex_unlock(&ses->session_mutex); |
1da177e4c
|
768 769 |
/* if session dead then we do not need to do ulogoff, |
50c2f7538
|
770 |
since server closed smb session, no sense reporting |
1da177e4c
|
771 772 773 774 775 776 777 |
error */ if (rc == -EAGAIN) rc = 0; return rc; } int |
6d5786a34
|
778 779 780 |
CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *fileName, __u16 type, const struct nls_table *nls_codepage, int remap) |
2d785a50a
|
781 782 783 784 785 786 787 788 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; struct unlink_psx_rq *pRqD; int name_len; int rc = 0; int bytes_returned = 0; __u16 params, param_offset, offset, byte_count; |
f96637be0
|
789 790 |
cifs_dbg(FYI, "In POSIX delete "); |
2d785a50a
|
791 792 793 794 795 796 797 798 |
PsxDelete: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
799 800 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, PATH_MAX, nls_codepage, remap); |
2d785a50a
|
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 |
name_len++; /* trailing null */ name_len *= 2; } else { /* BB add path length overrun check */ name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, fileName, name_len); } params = 6 + name_len; pSMB->MaxParameterCount = cpu_to_le16(2); pSMB->MaxDataCount = 0; /* BB double check this with jra */ pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, InformationLevel) - 4; offset = param_offset + params; /* Setup pointer to Request Data (inode type) */ pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); pRqD->type = cpu_to_le16(type); pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); pSMB->Reserved4 = 0; |
be8e3b004
|
837 |
inc_rfc1001_len(pSMB, byte_count); |
2d785a50a
|
838 839 840 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
841 |
if (rc) |
f96637be0
|
842 843 |
cifs_dbg(FYI, "Posix delete returned %d ", rc); |
2d785a50a
|
844 |
cifs_buf_release(pSMB); |
44c581866
|
845 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50a
|
846 847 848 849 850 851 852 853 |
if (rc == -EAGAIN) goto PsxDelete; return rc; } int |
ed6875e0d
|
854 855 |
CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, struct cifs_sb_info *cifs_sb) |
1da177e4c
|
856 857 858 859 860 861 |
{ DELETE_FILE_REQ *pSMB = NULL; DELETE_FILE_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; |
2baa26825
|
862 |
int remap = cifs_remap(cifs_sb); |
1da177e4c
|
863 864 865 866 867 868 869 870 |
DelFileRetry: rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
ed6875e0d
|
871 872 873 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
874 875 |
name_len++; /* trailing null */ name_len *= 2; |
09d1db5c6
|
876 |
} else { /* BB improve check for buffer overruns BB */ |
ed6875e0d
|
877 |
name_len = strnlen(name, PATH_MAX); |
1da177e4c
|
878 |
name_len++; /* trailing null */ |
ed6875e0d
|
879 |
strncpy(pSMB->fileName, name, name_len); |
1da177e4c
|
880 881 882 883 |
} pSMB->SearchAttributes = cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); pSMB->BufferFormat = 0x04; |
be8e3b004
|
884 |
inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4c
|
885 886 887 |
pSMB->ByteCount = cpu_to_le16(name_len + 1); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
888 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926b
|
889 |
if (rc) |
f96637be0
|
890 891 |
cifs_dbg(FYI, "Error in RMFile = %d ", rc); |
1da177e4c
|
892 893 894 895 896 897 898 899 900 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto DelFileRetry; return rc; } int |
f958ca5d8
|
901 902 |
CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, struct cifs_sb_info *cifs_sb) |
1da177e4c
|
903 904 905 906 907 908 |
{ DELETE_DIRECTORY_REQ *pSMB = NULL; DELETE_DIRECTORY_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; |
2baa26825
|
909 |
int remap = cifs_remap(cifs_sb); |
1da177e4c
|
910 |
|
f96637be0
|
911 912 |
cifs_dbg(FYI, "In CIFSSMBRmDir "); |
1da177e4c
|
913 914 915 916 917 918 919 |
RmDirRetry: rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
f958ca5d8
|
920 921 922 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
923 924 |
name_len++; /* trailing null */ name_len *= 2; |
09d1db5c6
|
925 |
} else { /* BB improve check for buffer overruns BB */ |
f958ca5d8
|
926 |
name_len = strnlen(name, PATH_MAX); |
1da177e4c
|
927 |
name_len++; /* trailing null */ |
f958ca5d8
|
928 |
strncpy(pSMB->DirName, name, name_len); |
1da177e4c
|
929 930 931 |
} pSMB->BufferFormat = 0x04; |
be8e3b004
|
932 |
inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4c
|
933 934 935 |
pSMB->ByteCount = cpu_to_le16(name_len + 1); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
936 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926b
|
937 |
if (rc) |
f96637be0
|
938 939 |
cifs_dbg(FYI, "Error in RMDir = %d ", rc); |
1da177e4c
|
940 941 942 943 944 945 946 947 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto RmDirRetry; return rc; } int |
f436720e9
|
948 949 |
CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, struct cifs_sb_info *cifs_sb) |
1da177e4c
|
950 951 952 953 954 955 |
{ int rc = 0; CREATE_DIRECTORY_REQ *pSMB = NULL; CREATE_DIRECTORY_RSP *pSMBr = NULL; int bytes_returned; int name_len; |
2baa26825
|
956 |
int remap = cifs_remap(cifs_sb); |
1da177e4c
|
957 |
|
f96637be0
|
958 959 |
cifs_dbg(FYI, "In CIFSSMBMkDir "); |
1da177e4c
|
960 961 962 963 964 965 966 |
MkDirRetry: rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
acbbb76a2
|
967 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e9
|
968 969 |
PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
970 971 |
name_len++; /* trailing null */ name_len *= 2; |
09d1db5c6
|
972 |
} else { /* BB improve check for buffer overruns BB */ |
1da177e4c
|
973 974 975 976 977 978 |
name_len = strnlen(name, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->DirName, name, name_len); } pSMB->BufferFormat = 0x04; |
be8e3b004
|
979 |
inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4c
|
980 981 982 |
pSMB->ByteCount = cpu_to_le16(name_len + 1); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
983 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926b
|
984 |
if (rc) |
f96637be0
|
985 986 |
cifs_dbg(FYI, "Error in Mkdir = %d ", rc); |
a5a2b489b
|
987 |
|
1da177e4c
|
988 989 990 991 992 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto MkDirRetry; return rc; } |
2dd29d313
|
993 |
int |
6d5786a34
|
994 995 996 997 998 |
CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, __u32 posix_flags, __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, const char *name, const struct nls_table *nls_codepage, int remap) |
2dd29d313
|
999 1000 1001 1002 1003 1004 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; int name_len; int rc = 0; int bytes_returned = 0; |
2dd29d313
|
1005 |
__u16 params, param_offset, offset, byte_count, count; |
ad7a2926b
|
1006 1007 |
OPEN_PSX_REQ *pdata; OPEN_PSX_RSP *psx_rsp; |
2dd29d313
|
1008 |
|
f96637be0
|
1009 1010 |
cifs_dbg(FYI, "In POSIX Create "); |
2dd29d313
|
1011 1012 1013 1014 1015 1016 1017 1018 |
PsxCreat: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
1019 1020 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, name, PATH_MAX, nls_codepage, remap); |
2dd29d313
|
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 |
name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve the check for buffer overruns BB */ name_len = strnlen(name, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, name, name_len); } params = 6 + name_len; count = sizeof(OPEN_PSX_REQ); pSMB->MaxParameterCount = cpu_to_le16(2); pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
1039 |
InformationLevel) - 4; |
2dd29d313
|
1040 |
offset = param_offset + params; |
2dd29d313
|
1041 |
pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); |
8f2376adf
|
1042 |
pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d313
|
1043 |
pdata->Permissions = cpu_to_le64(mode); |
50c2f7538
|
1044 |
pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d313
|
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 |
pdata->OpenFlags = cpu_to_le32(*pOplock); pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); pSMB->Reserved4 = 0; |
be8e3b004
|
1059 |
inc_rfc1001_len(pSMB, byte_count); |
2dd29d313
|
1060 1061 1062 1063 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
1064 1065 |
cifs_dbg(FYI, "Posix create returned %d ", rc); |
2dd29d313
|
1066 1067 |
goto psx_create_err; } |
f96637be0
|
1068 1069 |
cifs_dbg(FYI, "copying inode info "); |
2dd29d313
|
1070 |
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
1071 |
if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d313
|
1072 1073 1074 1075 1076 |
rc = -EIO; /* bad smb */ goto psx_create_err; } /* copy return information to pRetData */ |
50c2f7538
|
1077 |
psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d313
|
1078 |
+ le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f7538
|
1079 |
|
2dd29d313
|
1080 |
*pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579f
|
1081 |
if (netfid) |
2dd29d313
|
1082 1083 1084 |
*netfid = psx_rsp->Fid; /* cifs fid stays in le */ /* Let caller know file was created so we can set the mode. */ /* Do we care about the CreateAction in any other cases? */ |
790fe579f
|
1085 |
if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d313
|
1086 1087 |
*pOplock |= CIFS_CREATE_ACTION; /* check to make sure response data is there */ |
8f2376adf
|
1088 1089 |
if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { pRetData->Type = cpu_to_le32(-1); /* unknown */ |
f96637be0
|
1090 1091 |
cifs_dbg(NOISY, "unknown type "); |
cbac3cba6
|
1092 |
} else { |
820a803ff
|
1093 |
if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d313
|
1094 |
+ sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be0
|
1095 1096 |
cifs_dbg(VFS, "Open response data too small "); |
8f2376adf
|
1097 |
pRetData->Type = cpu_to_le32(-1); |
2dd29d313
|
1098 1099 |
goto psx_create_err; } |
50c2f7538
|
1100 |
memcpy((char *) pRetData, |
cbac3cba6
|
1101 |
(char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364d
|
1102 |
sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d313
|
1103 |
} |
2dd29d313
|
1104 1105 1106 |
psx_create_err: cifs_buf_release(pSMB); |
65bc98b00
|
1107 |
if (posix_flags & SMB_O_DIRECTORY) |
44c581866
|
1108 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b00
|
1109 |
else |
44c581866
|
1110 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d313
|
1111 1112 1113 |
if (rc == -EAGAIN) goto PsxCreat; |
50c2f7538
|
1114 |
return rc; |
2dd29d313
|
1115 |
} |
a9d02ad49
|
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
static __u16 convert_disposition(int disposition) { __u16 ofun = 0; switch (disposition) { case FILE_SUPERSEDE: ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; break; case FILE_OPEN: ofun = SMBOPEN_OAPPEND; break; case FILE_CREATE: ofun = SMBOPEN_OCREATE; break; case FILE_OPEN_IF: ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; break; case FILE_OVERWRITE: ofun = SMBOPEN_OTRUNC; break; case FILE_OVERWRITE_IF: ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; break; default: |
f96637be0
|
1140 1141 |
cifs_dbg(FYI, "unknown disposition %d ", disposition); |
a9d02ad49
|
1142 1143 1144 1145 |
ofun = SMBOPEN_OAPPEND; /* regular open */ } return ofun; } |
35fc37d51
|
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 |
static int access_flags_to_smbopen_mode(const int access_flags) { int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); if (masked_flags == GENERIC_READ) return SMBOPEN_READ; else if (masked_flags == GENERIC_WRITE) return SMBOPEN_WRITE; /* just go for read/write */ return SMBOPEN_READWRITE; } |
a9d02ad49
|
1159 |
int |
6d5786a34
|
1160 |
SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad49
|
1161 |
const char *fileName, const int openDisposition, |
ad7a2926b
|
1162 1163 |
const int access_flags, const int create_options, __u16 *netfid, int *pOplock, FILE_ALL_INFO *pfile_info, |
a9d02ad49
|
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 |
const struct nls_table *nls_codepage, int remap) { int rc = -EACCES; OPENX_REQ *pSMB = NULL; OPENX_RSP *pSMBr = NULL; int bytes_returned; int name_len; __u16 count; OldOpenRetry: rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->AndXCommand = 0xFF; /* none */ if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { count = 1; /* account for one byte pad to word boundary */ name_len = |
acbbb76a2
|
1184 1185 |
cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), fileName, PATH_MAX, nls_codepage, remap); |
a9d02ad49
|
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 |
name_len++; /* trailing null */ name_len *= 2; } else { /* BB improve check for buffer overruns BB */ count = 0; /* no pad */ name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->fileName, fileName, name_len); } if (*pOplock & REQ_OPLOCK) pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); |
26f57364d
|
1196 |
else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad49
|
1197 |
pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364d
|
1198 |
|
a9d02ad49
|
1199 |
pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d51
|
1200 |
pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad49
|
1201 1202 1203 1204 |
pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ /* set file as system file if special file such as fifo and server expecting SFU style and no Unix extensions */ |
790fe579f
|
1205 1206 |
if (create_options & CREATE_OPTION_SPECIAL) pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); |
ad7a2926b
|
1207 1208 |
else /* BB FIXME BB */ pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); |
a9d02ad49
|
1209 |
|
67750fb9e
|
1210 1211 |
if (create_options & CREATE_OPTION_READONLY) pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); |
a9d02ad49
|
1212 1213 |
/* BB FIXME BB */ |
50c2f7538
|
1214 1215 |
/* pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); */ |
a9d02ad49
|
1216 |
/* BB FIXME END BB */ |
3e87d8039
|
1217 1218 |
pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); |
70ca734a1
|
1219 |
pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad49
|
1220 |
count += name_len; |
be8e3b004
|
1221 |
inc_rfc1001_len(pSMB, count); |
a9d02ad49
|
1222 1223 1224 1225 |
pSMB->ByteCount = cpu_to_le16(count); /* long_op set to 1 to allow for oplock break timeouts */ rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981ec
|
1226 |
(struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c581866
|
1227 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad49
|
1228 |
if (rc) { |
f96637be0
|
1229 1230 |
cifs_dbg(FYI, "Error in Open = %d ", rc); |
a9d02ad49
|
1231 1232 |
} else { /* BB verify if wct == 15 */ |
582d21e5e
|
1233 |
/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad49
|
1234 1235 1236 1237 1238 |
*netfid = pSMBr->Fid; /* cifs fid stays in le */ /* Let caller know file was created so we can set the mode. */ /* Do we care about the CreateAction in any other cases? */ /* BB FIXME BB */ |
790fe579f
|
1239 |
/* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad49
|
1240 1241 |
*pOplock |= CIFS_CREATE_ACTION; */ /* BB FIXME END */ |
790fe579f
|
1242 |
if (pfile_info) { |
a9d02ad49
|
1243 1244 1245 1246 |
pfile_info->CreationTime = 0; /* BB convert CreateTime*/ pfile_info->LastAccessTime = 0; /* BB fixme */ pfile_info->LastWriteTime = 0; /* BB fixme */ pfile_info->ChangeTime = 0; /* BB fixme */ |
70ca734a1
|
1247 |
pfile_info->Attributes = |
50c2f7538
|
1248 |
cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad49
|
1249 |
/* the file_info buf is endian converted by caller */ |
70ca734a1
|
1250 1251 1252 |
pfile_info->AllocationSize = cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); pfile_info->EndOfFile = pfile_info->AllocationSize; |
a9d02ad49
|
1253 |
pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fce
|
1254 |
pfile_info->DeletePending = 0; |
a9d02ad49
|
1255 1256 1257 1258 1259 1260 1261 1262 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto OldOpenRetry; return rc; } |
1da177e4c
|
1263 |
int |
d81b8a40e
|
1264 1265 |
CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, FILE_ALL_INFO *buf) |
1da177e4c
|
1266 1267 |
{ int rc = -EACCES; |
9bf4fa01f
|
1268 1269 |
OPEN_REQ *req = NULL; OPEN_RSP *rsp = NULL; |
1da177e4c
|
1270 1271 1272 |
int bytes_returned; int name_len; __u16 count; |
d81b8a40e
|
1273 1274 |
struct cifs_sb_info *cifs_sb = oparms->cifs_sb; struct cifs_tcon *tcon = oparms->tcon; |
2baa26825
|
1275 |
int remap = cifs_remap(cifs_sb); |
d81b8a40e
|
1276 1277 1278 1279 1280 |
const struct nls_table *nls = cifs_sb->local_nls; int create_options = oparms->create_options; int desired_access = oparms->desired_access; int disposition = oparms->disposition; const char *path = oparms->path; |
1da177e4c
|
1281 1282 |
openRetry: |
9bf4fa01f
|
1283 1284 |
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, (void **)&rsp); |
1da177e4c
|
1285 1286 |
if (rc) return rc; |
9bf4fa01f
|
1287 1288 |
/* no commands go after this */ req->AndXCommand = 0xFF; |
1da177e4c
|
1289 |
|
9bf4fa01f
|
1290 1291 1292 1293 1294 1295 1296 |
if (req->hdr.Flags2 & SMBFLG2_UNICODE) { /* account for one byte pad to word boundary */ count = 1; name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), path, PATH_MAX, nls, remap); /* trailing null */ name_len++; |
1da177e4c
|
1297 |
name_len *= 2; |
9bf4fa01f
|
1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 |
req->NameLength = cpu_to_le16(name_len); } else { /* BB improve check for buffer overruns BB */ /* no pad */ count = 0; name_len = strnlen(path, PATH_MAX); /* trailing null */ name_len++; req->NameLength = cpu_to_le16(name_len); strncpy(req->fileName, path, name_len); |
1da177e4c
|
1308 |
} |
9bf4fa01f
|
1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 |
if (*oplock & REQ_OPLOCK) req->OpenFlags = cpu_to_le32(REQ_OPLOCK); else if (*oplock & REQ_BATCHOPLOCK) req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); req->DesiredAccess = cpu_to_le32(desired_access); req->AllocationSize = 0; /* * Set file as system file if special file such as fifo and server * expecting SFU style and no Unix extensions. */ |
790fe579f
|
1322 |
if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01f
|
1323 |
req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c0298
|
1324 |
else |
9bf4fa01f
|
1325 |
req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9e
|
1326 |
|
9bf4fa01f
|
1327 1328 1329 1330 |
/* * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case * sensitive checks for other servers such as Samba. */ |
1da177e4c
|
1331 |
if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01f
|
1332 |
req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4c
|
1333 |
|
67750fb9e
|
1334 |
if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01f
|
1335 1336 1337 1338 1339 |
req->FileAttributes |= cpu_to_le32(ATTR_READONLY); req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); req->CreateDisposition = cpu_to_le32(disposition); req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); |
67750fb9e
|
1340 |
|
09d1db5c6
|
1341 |
/* BB Expirement with various impersonation levels and verify */ |
9bf4fa01f
|
1342 1343 |
req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; |
1da177e4c
|
1344 1345 |
count += name_len; |
9bf4fa01f
|
1346 |
inc_rfc1001_len(req, count); |
1da177e4c
|
1347 |
|
9bf4fa01f
|
1348 1349 1350 |
req->ByteCount = cpu_to_le16(count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, (struct smb_hdr *)rsp, &bytes_returned, 0); |
44c581866
|
1351 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4c
|
1352 |
if (rc) { |
f96637be0
|
1353 1354 |
cifs_dbg(FYI, "Error in Open = %d ", rc); |
9bf4fa01f
|
1355 1356 1357 1358 |
cifs_buf_release(req); if (rc == -EAGAIN) goto openRetry; return rc; |
1da177e4c
|
1359 |
} |
a5a2b489b
|
1360 |
|
9bf4fa01f
|
1361 1362 1363 |
/* 1 byte no need to le_to_cpu */ *oplock = rsp->OplockLevel; /* cifs fid stays in le */ |
d81b8a40e
|
1364 |
oparms->fid->netfid = rsp->Fid; |
9bf4fa01f
|
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 |
/* Let caller know file was created so we can set the mode. */ /* Do we care about the CreateAction in any other cases? */ if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) *oplock |= CIFS_CREATE_ACTION; if (buf) { /* copy from CreationTime to Attributes */ memcpy((char *)buf, (char *)&rsp->CreationTime, 36); /* the file_info buf is endian converted by caller */ buf->AllocationSize = rsp->AllocationSize; buf->EndOfFile = rsp->EndOfFile; buf->NumberOfLinks = cpu_to_le32(1); buf->DeletePending = 0; } cifs_buf_release(req); |
1da177e4c
|
1382 1383 |
return rc; } |
e28bc5b1f
|
1384 1385 1386 1387 1388 |
/* * Discard any remaining data in the current SMB. To do this, we borrow the * current bigbuf. */ static int |
6cc3b2423
|
1389 |
discard_remaining_data(struct TCP_Server_Info *server) |
e28bc5b1f
|
1390 |
{ |
5ffef7bf1
|
1391 |
unsigned int rfclen = get_rfc1002_length(server->smallbuf); |
e28bc5b1f
|
1392 |
int remaining = rfclen + 4 - server->total_read; |
e28bc5b1f
|
1393 1394 1395 1396 1397 1398 |
while (remaining > 0) { int length; length = cifs_read_from_socket(server, server->bigbuf, min_t(unsigned int, remaining, |
1887f6010
|
1399 |
CIFSMaxBufSize + MAX_HEADER_SIZE(server))); |
e28bc5b1f
|
1400 1401 1402 1403 1404 |
if (length < 0) return length; server->total_read += length; remaining -= length; } |
e28bc5b1f
|
1405 1406 |
return 0; } |
6cc3b2423
|
1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 |
static int cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) { int length; struct cifs_readdata *rdata = mid->callback_data; length = discard_remaining_data(server); dequeue_mid(mid, rdata->result); return length; } |
09a4707e7
|
1417 |
int |
e28bc5b1f
|
1418 1419 1420 |
cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) { int length, len; |
8d5ce4d23
|
1421 |
unsigned int data_offset, data_len; |
e28bc5b1f
|
1422 |
struct cifs_readdata *rdata = mid->callback_data; |
5ffef7bf1
|
1423 1424 |
char *buf = server->smallbuf; unsigned int buflen = get_rfc1002_length(buf) + 4; |
e28bc5b1f
|
1425 |
|
f96637be0
|
1426 1427 1428 |
cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u ", __func__, mid->mid, rdata->offset, rdata->bytes); |
e28bc5b1f
|
1429 1430 1431 1432 1433 1434 |
/* * read the rest of READ_RSP header (sans Data array), or whatever we * can if there's not enough data. At this point, we've read down to * the Mid. */ |
eb3787111
|
1435 |
len = min_t(unsigned int, buflen, server->vals->read_rsp_size) - |
1887f6010
|
1436 |
HEADER_SIZE(server) + 1; |
e28bc5b1f
|
1437 |
|
a6137305a
|
1438 1439 |
length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); |
e28bc5b1f
|
1440 1441 1442 |
if (length < 0) return length; server->total_read += length; |
6cc3b2423
|
1443 1444 1445 1446 1447 |
if (server->ops->is_status_pending && server->ops->is_status_pending(buf, server, 0)) { discard_remaining_data(server); return -1; } |
e28bc5b1f
|
1448 |
/* Was the SMB read successful? */ |
eb3787111
|
1449 |
rdata->result = server->ops->map_error(buf, false); |
e28bc5b1f
|
1450 |
if (rdata->result != 0) { |
f96637be0
|
1451 1452 1453 |
cifs_dbg(FYI, "%s: server returned error %d ", __func__, rdata->result); |
e28bc5b1f
|
1454 1455 1456 1457 |
return cifs_readv_discard(server, mid); } /* Is there enough to get to the rest of the READ_RSP header? */ |
eb3787111
|
1458 |
if (server->total_read < server->vals->read_rsp_size) { |
f96637be0
|
1459 1460 1461 1462 |
cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu ", __func__, server->total_read, server->vals->read_rsp_size); |
e28bc5b1f
|
1463 1464 1465 |
rdata->result = -EIO; return cifs_readv_discard(server, mid); } |
eb3787111
|
1466 |
data_offset = server->ops->read_data_offset(buf) + 4; |
e28bc5b1f
|
1467 1468 1469 1470 1471 1472 |
if (data_offset < server->total_read) { /* * win2k8 sometimes sends an offset of 0 when the read * is beyond the EOF. Treat it as if the data starts just after * the header. */ |
f96637be0
|
1473 1474 1475 |
cifs_dbg(FYI, "%s: data offset (%u) inside read response header ", __func__, data_offset); |
e28bc5b1f
|
1476 1477 1478 |
data_offset = server->total_read; } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { /* data_offset is beyond the end of smallbuf */ |
f96637be0
|
1479 1480 1481 |
cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf ", __func__, data_offset); |
e28bc5b1f
|
1482 1483 1484 |
rdata->result = -EIO; return cifs_readv_discard(server, mid); } |
f96637be0
|
1485 1486 1487 |
cifs_dbg(FYI, "%s: total_read=%u data_offset=%u ", __func__, server->total_read, data_offset); |
e28bc5b1f
|
1488 1489 1490 1491 |
len = data_offset - server->total_read; if (len > 0) { /* read any junk before data into the rest of smallbuf */ |
a6137305a
|
1492 1493 |
length = cifs_read_from_socket(server, buf + server->total_read, len); |
e28bc5b1f
|
1494 1495 1496 1497 1498 1499 |
if (length < 0) return length; server->total_read += length; } /* set up first iov for signature check */ |
5819575ec
|
1500 1501 |
rdata->iov.iov_base = buf; rdata->iov.iov_len = server->total_read; |
f96637be0
|
1502 1503 1504 |
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu ", rdata->iov.iov_base, rdata->iov.iov_len); |
e28bc5b1f
|
1505 1506 |
/* how much data is in the response? */ |
eb3787111
|
1507 |
data_len = server->ops->read_data_length(buf); |
5ffef7bf1
|
1508 |
if (data_offset + data_len > buflen) { |
e28bc5b1f
|
1509 1510 1511 1512 |
/* data_len is corrupt -- discard frame */ rdata->result = -EIO; return cifs_readv_discard(server, mid); } |
8321fec43
|
1513 1514 1515 |
length = rdata->read_into_pages(server, rdata, data_len); if (length < 0) return length; |
e28bc5b1f
|
1516 |
|
8321fec43
|
1517 |
server->total_read += length; |
e28bc5b1f
|
1518 |
|
f96637be0
|
1519 1520 1521 |
cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u ", server->total_read, buflen, data_len); |
e28bc5b1f
|
1522 1523 |
/* discard anything left over */ |
5ffef7bf1
|
1524 |
if (server->total_read < buflen) |
e28bc5b1f
|
1525 1526 1527 1528 1529 1530 1531 |
return cifs_readv_discard(server, mid); dequeue_mid(mid, false); return length; } static void |
e28bc5b1f
|
1532 1533 1534 1535 1536 |
cifs_readv_callback(struct mid_q_entry *mid) { struct cifs_readdata *rdata = mid->callback_data; struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); struct TCP_Server_Info *server = tcon->ses->server; |
5819575ec
|
1537 1538 |
struct smb_rqst rqst = { .rq_iov = &rdata->iov, .rq_nvec = 1, |
8321fec43
|
1539 1540 1541 1542 |
.rq_pages = rdata->pages, .rq_npages = rdata->nr_pages, .rq_pagesz = rdata->pagesz, .rq_tailsz = rdata->tailsz }; |
e28bc5b1f
|
1543 |
|
f96637be0
|
1544 1545 1546 1547 |
cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u ", __func__, mid->mid, mid->mid_state, rdata->result, rdata->bytes); |
e28bc5b1f
|
1548 |
|
7c9421e1a
|
1549 |
switch (mid->mid_state) { |
e28bc5b1f
|
1550 1551 |
case MID_RESPONSE_RECEIVED: /* result already set, check signature */ |
38d77c50b
|
1552 |
if (server->sign) { |
985e4ff01
|
1553 |
int rc = 0; |
bf5ea0e2f
|
1554 |
rc = cifs_verify_signature(&rqst, server, |
0124cc451
|
1555 |
mid->sequence_number); |
985e4ff01
|
1556 |
if (rc) |
f96637be0
|
1557 1558 1559 |
cifs_dbg(VFS, "SMB signature verification returned error = %d ", rc); |
e28bc5b1f
|
1560 1561 |
} /* FIXME: should this be counted toward the initiating task? */ |
34a54d617
|
1562 1563 |
task_io_account_read(rdata->got_bytes); cifs_stats_bytes_read(tcon, rdata->got_bytes); |
e28bc5b1f
|
1564 1565 1566 1567 |
break; case MID_REQUEST_SUBMITTED: case MID_RETRY_NEEDED: rdata->result = -EAGAIN; |
d913ed17f
|
1568 1569 1570 1571 1572 1573 |
if (server->sign && rdata->got_bytes) /* reset bytes number since we can not check a sign */ rdata->got_bytes = 0; /* FIXME: should this be counted toward the initiating task? */ task_io_account_read(rdata->got_bytes); cifs_stats_bytes_read(tcon, rdata->got_bytes); |
e28bc5b1f
|
1574 1575 1576 1577 |
break; default: rdata->result = -EIO; } |
da472fc84
|
1578 |
queue_work(cifsiod_wq, &rdata->work); |
5fb4e288a
|
1579 |
mutex_lock(&server->srv_mutex); |
e28bc5b1f
|
1580 |
DeleteMidQEntry(mid); |
5fb4e288a
|
1581 |
mutex_unlock(&server->srv_mutex); |
a891f0f89
|
1582 |
add_credits(server, 1, 0); |
e28bc5b1f
|
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 |
} /* cifs_async_readv - send an async write, and set up mid to handle result */ int cifs_async_readv(struct cifs_readdata *rdata) { int rc; READ_REQ *smb = NULL; int wct; struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); |
5819575ec
|
1593 |
struct smb_rqst rqst = { .rq_iov = &rdata->iov, |
fec344e3f
|
1594 |
.rq_nvec = 1 }; |
e28bc5b1f
|
1595 |
|
f96637be0
|
1596 1597 1598 |
cifs_dbg(FYI, "%s: offset=%llu bytes=%u ", __func__, rdata->offset, rdata->bytes); |
e28bc5b1f
|
1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 |
if (tcon->ses->capabilities & CAP_LARGE_FILES) wct = 12; else { wct = 10; /* old style read */ if ((rdata->offset >> 32) > 0) { /* can not handle this big offset for old */ return -EIO; } } rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); if (rc) return rc; smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); smb->AndXCommand = 0xFF; /* none */ |
4b4de76e3
|
1618 |
smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1f
|
1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 |
smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); if (wct == 12) smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); smb->Remaining = 0; smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); if (wct == 12) smb->ByteCount = 0; else { /* old style read */ struct smb_com_readx_req *smbr = (struct smb_com_readx_req *)smb; smbr->ByteCount = 0; } /* 4 for RFC1001 length + 1 for BCC */ |
5819575ec
|
1635 1636 |
rdata->iov.iov_base = smb; rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4; |
e28bc5b1f
|
1637 |
|
6993f74a5
|
1638 |
kref_get(&rdata->refcount); |
fec344e3f
|
1639 1640 |
rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, cifs_readv_callback, rdata, 0); |
e28bc5b1f
|
1641 1642 |
if (rc == 0) |
44c581866
|
1643 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a5
|
1644 1645 |
else kref_put(&rdata->refcount, cifs_readdata_release); |
e28bc5b1f
|
1646 1647 1648 1649 |
cifs_small_buf_release(smb); return rc; } |
1da177e4c
|
1650 |
int |
6d5786a34
|
1651 1652 |
CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes, char **buf, int *pbuf_type) |
1da177e4c
|
1653 1654 1655 1656 1657 |
{ int rc = -EACCES; READ_REQ *pSMB = NULL; READ_RSP *pSMBr = NULL; char *pReadData = NULL; |
bfa0d75a1
|
1658 |
int wct; |
ec637e3ff
|
1659 1660 |
int resp_buf_type = 0; struct kvec iov[1]; |
d4ffff1fa
|
1661 1662 1663 |
__u32 pid = io_parms->pid; __u16 netfid = io_parms->netfid; __u64 offset = io_parms->offset; |
96daf2b09
|
1664 |
struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1fa
|
1665 |
unsigned int count = io_parms->length; |
1da177e4c
|
1666 |
|
f96637be0
|
1667 1668 |
cifs_dbg(FYI, "Reading %d bytes on fid %d ", count, netfid); |
790fe579f
|
1669 |
if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a1
|
1670 |
wct = 12; |
4c3130efd
|
1671 |
else { |
bfa0d75a1
|
1672 |
wct = 10; /* old style read */ |
d4ffff1fa
|
1673 |
if ((offset >> 32) > 0) { |
4c3130efd
|
1674 1675 1676 1677 |
/* can not handle this big offset for old */ return -EIO; } } |
1da177e4c
|
1678 1679 |
*nbytes = 0; |
ec637e3ff
|
1680 |
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4c
|
1681 1682 |
if (rc) return rc; |
d4ffff1fa
|
1683 1684 |
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
1da177e4c
|
1685 1686 1687 |
/* tcon and ses pointer are checked in smb_init */ if (tcon->ses->server == NULL) return -ECONNABORTED; |
ec637e3ff
|
1688 |
pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4c
|
1689 |
pSMB->Fid = netfid; |
d4ffff1fa
|
1690 |
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579f
|
1691 |
if (wct == 12) |
d4ffff1fa
|
1692 |
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a1
|
1693 |
|
1da177e4c
|
1694 1695 1696 |
pSMB->Remaining = 0; pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); pSMB->MaxCountHigh = cpu_to_le32(count >> 16); |
790fe579f
|
1697 |
if (wct == 12) |
bfa0d75a1
|
1698 1699 1700 |
pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ else { /* old style read */ |
50c2f7538
|
1701 |
struct smb_com_readx_req *pSMBW = |
bfa0d75a1
|
1702 |
(struct smb_com_readx_req *)pSMB; |
ec637e3ff
|
1703 |
pSMBW->ByteCount = 0; |
bfa0d75a1
|
1704 |
} |
ec637e3ff
|
1705 1706 |
iov[0].iov_base = (char *)pSMB; |
be8e3b004
|
1707 |
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
a761ac579
|
1708 |
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
7749981ec
|
1709 |
&resp_buf_type, CIFS_LOG_ERROR); |
44c581866
|
1710 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
ec637e3ff
|
1711 |
pSMBr = (READ_RSP *)iov[0].iov_base; |
1da177e4c
|
1712 |
if (rc) { |
f96637be0
|
1713 1714 |
cifs_dbg(VFS, "Send error in read = %d ", rc); |
1da177e4c
|
1715 1716 1717 1718 1719 1720 1721 |
} else { int data_length = le16_to_cpu(pSMBr->DataLengthHigh); data_length = data_length << 16; data_length += le16_to_cpu(pSMBr->DataLength); *nbytes = data_length; /*check that DataLength would not go beyond end of SMB */ |
ec637e3ff
|
1722 |
if ((data_length > CIFSMaxBufSize) |
1da177e4c
|
1723 |
|| (data_length > count)) { |
f96637be0
|
1724 1725 |
cifs_dbg(FYI, "bad length %d for count %d ", |
b6b38f704
|
1726 |
data_length, count); |
1da177e4c
|
1727 1728 1729 |
rc = -EIO; *nbytes = 0; } else { |
ec637e3ff
|
1730 |
pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364d
|
1731 1732 |
le16_to_cpu(pSMBr->DataOffset); /* if (rc = copy_to_user(buf, pReadData, data_length)) { |
f96637be0
|
1733 1734 |
cifs_dbg(VFS, "Faulting on read rc = %d ",rc); |
50c2f7538
|
1735 |
rc = -EFAULT; |
26f57364d
|
1736 |
}*/ /* can not use copy_to_user when using page cache*/ |
790fe579f
|
1737 |
if (*buf) |
50c2f7538
|
1738 |
memcpy(*buf, pReadData, data_length); |
1da177e4c
|
1739 1740 |
} } |
1da177e4c
|
1741 |
|
4b8f930ff
|
1742 |
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
790fe579f
|
1743 |
if (*buf) { |
6d81ed1ec
|
1744 |
free_rsp_buf(resp_buf_type, iov[0].iov_base); |
790fe579f
|
1745 |
} else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f7538
|
1746 1747 |
/* return buffer to caller to free */ *buf = iov[0].iov_base; |
790fe579f
|
1748 |
if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3ff
|
1749 |
*pbuf_type = CIFS_SMALL_BUFFER; |
790fe579f
|
1750 |
else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3ff
|
1751 |
*pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed8
|
1752 |
} /* else no valid buffer on return - leave as null */ |
ec637e3ff
|
1753 1754 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
1755 1756 1757 |
since file handle passed in no longer valid */ return rc; } |
ec637e3ff
|
1758 |
|
1da177e4c
|
1759 |
int |
6d5786a34
|
1760 |
CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
fa2989f44
|
1761 |
unsigned int *nbytes, const char *buf, |
50c2f7538
|
1762 |
const char __user *ubuf, const int long_op) |
1da177e4c
|
1763 1764 1765 1766 |
{ int rc = -EACCES; WRITE_REQ *pSMB = NULL; WRITE_RSP *pSMBr = NULL; |
1c9551878
|
1767 |
int bytes_returned, wct; |
1da177e4c
|
1768 1769 |
__u32 bytes_sent; __u16 byte_count; |
fa2989f44
|
1770 1771 1772 |
__u32 pid = io_parms->pid; __u16 netfid = io_parms->netfid; __u64 offset = io_parms->offset; |
96daf2b09
|
1773 |
struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f44
|
1774 |
unsigned int count = io_parms->length; |
1da177e4c
|
1775 |
|
a24e2d7d8
|
1776 |
*nbytes = 0; |
f96637be0
|
1777 1778 |
/* cifs_dbg(FYI, "write at %lld %d bytes ", offset, count);*/ |
790fe579f
|
1779 |
if (tcon->ses == NULL) |
1c9551878
|
1780 |
return -ECONNABORTED; |
790fe579f
|
1781 |
if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c9551878
|
1782 |
wct = 14; |
4c3130efd
|
1783 |
else { |
1c9551878
|
1784 |
wct = 12; |
4c3130efd
|
1785 1786 1787 1788 1789 |
if ((offset >> 32) > 0) { /* can not handle big offset for old srv */ return -EIO; } } |
1c9551878
|
1790 1791 |
rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, |
1da177e4c
|
1792 1793 1794 |
(void **) &pSMBr); if (rc) return rc; |
fa2989f44
|
1795 1796 1797 |
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
1da177e4c
|
1798 1799 1800 1801 1802 1803 1804 |
/* tcon and ses pointer are checked in smb_init */ if (tcon->ses->server == NULL) return -ECONNABORTED; pSMB->AndXCommand = 0xFF; /* none */ pSMB->Fid = netfid; pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579f
|
1805 |
if (wct == 14) |
1c9551878
|
1806 |
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f7538
|
1807 |
|
1da177e4c
|
1808 1809 1810 |
pSMB->Reserved = 0xFFFFFFFF; pSMB->WriteMode = 0; pSMB->Remaining = 0; |
50c2f7538
|
1811 |
/* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4c
|
1812 1813 1814 |
can send more if LARGE_WRITE_X capability returned by the server and if our buffer is big enough or if we convert to iovecs on socket writes and eliminate the copy to the CIFS buffer */ |
790fe579f
|
1815 |
if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4c
|
1816 1817 1818 1819 1820 1821 1822 1823 1824 |
bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); } else { bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & ~0xFF; } if (bytes_sent > count) bytes_sent = count; pSMB->DataOffset = |
50c2f7538
|
1825 |
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579f
|
1826 |
if (buf) |
61e748015
|
1827 |
memcpy(pSMB->Data, buf, bytes_sent); |
790fe579f
|
1828 1829 |
else if (ubuf) { if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { |
1da177e4c
|
1830 1831 1832 |
cifs_buf_release(pSMB); return -EFAULT; } |
e30dcf3a1
|
1833 |
} else if (count != 0) { |
1da177e4c
|
1834 1835 1836 |
/* No buffer */ cifs_buf_release(pSMB); return -EINVAL; |
e30dcf3a1
|
1837 |
} /* else setting file size with write of zero bytes */ |
790fe579f
|
1838 |
if (wct == 14) |
e30dcf3a1
|
1839 |
byte_count = bytes_sent + 1; /* pad */ |
ad7a2926b
|
1840 |
else /* wct == 12 */ |
e30dcf3a1
|
1841 |
byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926b
|
1842 |
|
1da177e4c
|
1843 1844 |
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); |
be8e3b004
|
1845 |
inc_rfc1001_len(pSMB, byte_count); |
1c9551878
|
1846 |
|
790fe579f
|
1847 |
if (wct == 14) |
1c9551878
|
1848 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f7538
|
1849 1850 1851 |
else { /* old style write has byte count 4 bytes earlier so 4 bytes pad */ struct smb_com_writex_req *pSMBW = |
1c9551878
|
1852 1853 1854 |
(struct smb_com_writex_req *)pSMB; pSMBW->ByteCount = cpu_to_le16(byte_count); } |
1da177e4c
|
1855 1856 1857 |
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, long_op); |
44c581866
|
1858 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4c
|
1859 |
if (rc) { |
f96637be0
|
1860 1861 |
cifs_dbg(FYI, "Send error in write = %d ", rc); |
1da177e4c
|
1862 1863 1864 1865 |
} else { *nbytes = le16_to_cpu(pSMBr->CountHigh); *nbytes = (*nbytes) << 16; *nbytes += le16_to_cpu(pSMBr->Count); |
6513a81e9
|
1866 1867 1868 1869 1870 1871 1872 1873 |
/* * Mask off high 16 bits when bytes written as returned by the * server is greater than bytes requested by the client. Some * OS/2 servers are known to set incorrect CountHigh values. */ if (*nbytes > count) *nbytes &= 0xFFFF; |
1da177e4c
|
1874 1875 1876 |
} cifs_buf_release(pSMB); |
50c2f7538
|
1877 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
1878 1879 1880 1881 |
since file handle passed in no longer valid */ return rc; } |
c28c89fc4
|
1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 |
void cifs_writedata_release(struct kref *refcount) { struct cifs_writedata *wdata = container_of(refcount, struct cifs_writedata, refcount); if (wdata->cfile) cifsFileInfo_put(wdata->cfile); kfree(wdata); } /* * Write failed with a retryable error. Resend the write request. It's also * possible that the page was redirtied so re-clean the page. */ static void cifs_writev_requeue(struct cifs_writedata *wdata) { |
7f6c50086
|
1901 |
int i, rc = 0; |
2b0143b5c
|
1902 |
struct inode *inode = d_inode(wdata->cfile->dentry); |
c9de5c80d
|
1903 |
struct TCP_Server_Info *server; |
7f6c50086
|
1904 |
unsigned int rest_len; |
c28c89fc4
|
1905 |
|
7f6c50086
|
1906 1907 1908 |
server = tlink_tcon(wdata->cfile->tlink)->ses->server; i = 0; rest_len = wdata->bytes; |
c28c89fc4
|
1909 |
do { |
7f6c50086
|
1910 1911 1912 1913 1914 |
struct cifs_writedata *wdata2; unsigned int j, nr_pages, wsize, tailsz, cur_len; wsize = server->ops->wp_retry_size(inode); if (wsize < rest_len) { |
09cbfeaf1
|
1915 |
nr_pages = wsize / PAGE_SIZE; |
7f6c50086
|
1916 1917 1918 1919 |
if (!nr_pages) { rc = -ENOTSUPP; break; } |
09cbfeaf1
|
1920 1921 |
cur_len = nr_pages * PAGE_SIZE; tailsz = PAGE_SIZE; |
7f6c50086
|
1922 |
} else { |
09cbfeaf1
|
1923 |
nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE); |
7f6c50086
|
1924 |
cur_len = rest_len; |
09cbfeaf1
|
1925 |
tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; |
7f6c50086
|
1926 |
} |
c28c89fc4
|
1927 |
|
7f6c50086
|
1928 1929 1930 1931 |
wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); if (!wdata2) { rc = -ENOMEM; break; |
c51bb0ea4
|
1932 |
} |
7f6c50086
|
1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
for (j = 0; j < nr_pages; j++) { wdata2->pages[j] = wdata->pages[i + j]; lock_page(wdata2->pages[j]); clear_page_dirty_for_io(wdata2->pages[j]); } wdata2->sync_mode = wdata->sync_mode; wdata2->nr_pages = nr_pages; wdata2->offset = page_offset(wdata2->pages[0]); |
09cbfeaf1
|
1943 |
wdata2->pagesz = PAGE_SIZE; |
7f6c50086
|
1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 |
wdata2->tailsz = tailsz; wdata2->bytes = cur_len; wdata2->cfile = find_writable_file(CIFS_I(inode), false); if (!wdata2->cfile) { cifs_dbg(VFS, "No writable handles for inode "); rc = -EBADF; break; } wdata2->pid = wdata2->cfile->pid; rc = server->ops->async_writev(wdata2, cifs_writedata_release); for (j = 0; j < nr_pages; j++) { unlock_page(wdata2->pages[j]); if (rc != 0 && rc != -EAGAIN) { SetPageError(wdata2->pages[j]); end_page_writeback(wdata2->pages[j]); |
09cbfeaf1
|
1962 |
put_page(wdata2->pages[j]); |
7f6c50086
|
1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 |
} } if (rc) { kref_put(&wdata2->refcount, cifs_writedata_release); if (rc == -EAGAIN) continue; break; } rest_len -= cur_len; i += nr_pages; } while (i < wdata->nr_pages); |
c28c89fc4
|
1976 1977 1978 1979 |
mapping_set_error(inode->i_mapping, rc); kref_put(&wdata->refcount, cifs_writedata_release); } |
c2e876400
|
1980 |
void |
c28c89fc4
|
1981 1982 1983 1984 |
cifs_writev_complete(struct work_struct *work) { struct cifs_writedata *wdata = container_of(work, struct cifs_writedata, work); |
2b0143b5c
|
1985 |
struct inode *inode = d_inode(wdata->cfile->dentry); |
c28c89fc4
|
1986 1987 1988 |
int i = 0; if (wdata->result == 0) { |
597b027f6
|
1989 |
spin_lock(&inode->i_lock); |
c28c89fc4
|
1990 |
cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes); |
597b027f6
|
1991 |
spin_unlock(&inode->i_lock); |
c28c89fc4
|
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 |
cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink), wdata->bytes); } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN) return cifs_writev_requeue(wdata); for (i = 0; i < wdata->nr_pages; i++) { struct page *page = wdata->pages[i]; if (wdata->result == -EAGAIN) __set_page_dirty_nobuffers(page); else if (wdata->result < 0) SetPageError(page); end_page_writeback(page); |
09cbfeaf1
|
2004 |
put_page(page); |
c28c89fc4
|
2005 2006 2007 2008 2009 2010 2011 |
} if (wdata->result != -EAGAIN) mapping_set_error(inode->i_mapping, wdata->result); kref_put(&wdata->refcount, cifs_writedata_release); } struct cifs_writedata * |
c2e876400
|
2012 |
cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) |
c28c89fc4
|
2013 2014 |
{ struct cifs_writedata *wdata; |
c28c89fc4
|
2015 2016 |
/* writedata + number of page pointers */ wdata = kzalloc(sizeof(*wdata) + |
26c8f0d60
|
2017 |
sizeof(struct page *) * nr_pages, GFP_NOFS); |
c28c89fc4
|
2018 |
if (wdata != NULL) { |
c28c89fc4
|
2019 |
kref_init(&wdata->refcount); |
da82f7e75
|
2020 2021 2022 |
INIT_LIST_HEAD(&wdata->list); init_completion(&wdata->done); INIT_WORK(&wdata->work, complete); |
c28c89fc4
|
2023 2024 2025 2026 2027 |
} return wdata; } /* |
7c9421e1a
|
2028 |
* Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc4
|
2029 2030 2031 2032 2033 2034 |
* workqueue completion task. */ static void cifs_writev_callback(struct mid_q_entry *mid) { struct cifs_writedata *wdata = mid->callback_data; |
96daf2b09
|
2035 |
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
5fb4e288a
|
2036 |
struct TCP_Server_Info *server = tcon->ses->server; |
c28c89fc4
|
2037 2038 |
unsigned int written; WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; |
7c9421e1a
|
2039 |
switch (mid->mid_state) { |
c28c89fc4
|
2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 |
case MID_RESPONSE_RECEIVED: wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); if (wdata->result != 0) break; written = le16_to_cpu(smb->CountHigh); written <<= 16; written += le16_to_cpu(smb->Count); /* * Mask off high 16 bits when bytes written as returned * by the server is greater than bytes requested by the * client. OS/2 servers are known to set incorrect * CountHigh values. */ if (written > wdata->bytes) written &= 0xFFFF; if (written < wdata->bytes) wdata->result = -ENOSPC; else wdata->bytes = written; break; case MID_REQUEST_SUBMITTED: case MID_RETRY_NEEDED: wdata->result = -EAGAIN; break; default: wdata->result = -EIO; break; } |
da472fc84
|
2070 |
queue_work(cifsiod_wq, &wdata->work); |
5fb4e288a
|
2071 |
mutex_lock(&server->srv_mutex); |
c28c89fc4
|
2072 |
DeleteMidQEntry(mid); |
5fb4e288a
|
2073 |
mutex_unlock(&server->srv_mutex); |
a891f0f89
|
2074 |
add_credits(tcon->ses->server, 1, 0); |
c28c89fc4
|
2075 2076 2077 2078 |
} /* cifs_async_writev - send an async write, and set up mid to handle result */ int |
4a5c80d7b
|
2079 2080 |
cifs_async_writev(struct cifs_writedata *wdata, void (*release)(struct kref *kref)) |
c28c89fc4
|
2081 |
{ |
eddb079de
|
2082 |
int rc = -EACCES; |
c28c89fc4
|
2083 2084 |
WRITE_REQ *smb = NULL; int wct; |
96daf2b09
|
2085 |
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
eddb079de
|
2086 |
struct kvec iov; |
fec344e3f
|
2087 |
struct smb_rqst rqst = { }; |
c28c89fc4
|
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 |
if (tcon->ses->capabilities & CAP_LARGE_FILES) { wct = 14; } else { wct = 12; if (wdata->offset >> 32 > 0) { /* can not handle big offset for old srv */ return -EIO; } } rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); if (rc) goto async_writev_out; |
fe5f5d2e9
|
2102 2103 |
smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); |
fa2989f44
|
2104 |
|
c28c89fc4
|
2105 |
smb->AndXCommand = 0xFF; /* none */ |
4b4de76e3
|
2106 |
smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc4
|
2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 |
smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); if (wct == 14) smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); smb->Reserved = 0xFFFFFFFF; smb->WriteMode = 0; smb->Remaining = 0; smb->DataOffset = cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); /* 4 for RFC1001 length + 1 for BCC */ |
eddb079de
|
2118 2119 |
iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1; iov.iov_base = smb; |
c28c89fc4
|
2120 |
|
eddb079de
|
2121 2122 2123 2124 2125 2126 |
rqst.rq_iov = &iov; rqst.rq_nvec = 1; rqst.rq_pages = wdata->pages; rqst.rq_npages = wdata->nr_pages; rqst.rq_pagesz = wdata->pagesz; rqst.rq_tailsz = wdata->tailsz; |
c28c89fc4
|
2127 |
|
f96637be0
|
2128 2129 2130 |
cifs_dbg(FYI, "async write at %llu %u bytes ", wdata->offset, wdata->bytes); |
c28c89fc4
|
2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 |
smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); if (wct == 14) { inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); put_bcc(wdata->bytes + 1, &smb->hdr); } else { /* wct == 12 */ struct smb_com_writex_req *smbw = (struct smb_com_writex_req *)smb; inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); put_bcc(wdata->bytes + 5, &smbw->hdr); |
eddb079de
|
2144 |
iov.iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc4
|
2145 2146 2147 |
} kref_get(&wdata->refcount); |
fec344e3f
|
2148 2149 |
rc = cifs_call_async(tcon->ses->server, &rqst, NULL, cifs_writev_callback, wdata, 0); |
c28c89fc4
|
2150 2151 |
if (rc == 0) |
44c581866
|
2152 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc4
|
2153 |
else |
4a5c80d7b
|
2154 |
kref_put(&wdata->refcount, release); |
c28c89fc4
|
2155 |
|
c28c89fc4
|
2156 2157 |
async_writev_out: cifs_small_buf_release(smb); |
c28c89fc4
|
2158 2159 |
return rc; } |
d6e04ae64
|
2160 |
int |
6d5786a34
|
2161 |
CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad7257
|
2162 |
unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4c
|
2163 2164 2165 |
{ int rc = -EACCES; WRITE_REQ *pSMB = NULL; |
ec637e3ff
|
2166 |
int wct; |
d6e04ae64
|
2167 |
int smb_hdr_len; |
ec637e3ff
|
2168 |
int resp_buf_type = 0; |
fa2989f44
|
2169 2170 2171 |
__u32 pid = io_parms->pid; __u16 netfid = io_parms->netfid; __u64 offset = io_parms->offset; |
96daf2b09
|
2172 |
struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f44
|
2173 |
unsigned int count = io_parms->length; |
1da177e4c
|
2174 |
|
fbec9ab95
|
2175 |
*nbytes = 0; |
f96637be0
|
2176 2177 |
cifs_dbg(FYI, "write2 at %lld %d bytes ", (long long)offset, count); |
ff7feac96
|
2178 |
|
4c3130efd
|
2179 |
if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6ec
|
2180 |
wct = 14; |
4c3130efd
|
2181 |
} else { |
8cc64c6ec
|
2182 |
wct = 12; |
4c3130efd
|
2183 2184 2185 2186 2187 |
if ((offset >> 32) > 0) { /* can not handle big offset for old srv */ return -EIO; } } |
8cc64c6ec
|
2188 |
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4c
|
2189 2190 |
if (rc) return rc; |
fa2989f44
|
2191 2192 2193 |
pSMB->hdr.Pid = cpu_to_le16((__u16)pid); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); |
1da177e4c
|
2194 2195 2196 |
/* tcon and ses pointer are checked in smb_init */ if (tcon->ses->server == NULL) return -ECONNABORTED; |
d6e04ae64
|
2197 |
pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4c
|
2198 2199 |
pSMB->Fid = netfid; pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579f
|
2200 |
if (wct == 14) |
8cc64c6ec
|
2201 |
pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4c
|
2202 2203 2204 |
pSMB->Reserved = 0xFFFFFFFF; pSMB->WriteMode = 0; pSMB->Remaining = 0; |
d6e04ae64
|
2205 |
|
1da177e4c
|
2206 |
pSMB->DataOffset = |
50c2f7538
|
2207 |
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4c
|
2208 |
|
3e84469d0
|
2209 2210 |
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); pSMB->DataLengthHigh = cpu_to_le16(count >> 16); |
be8e3b004
|
2211 2212 |
/* header + 1 byte pad */ smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; |
790fe579f
|
2213 |
if (wct == 14) |
be8e3b004
|
2214 |
inc_rfc1001_len(pSMB, count + 1); |
8cc64c6ec
|
2215 |
else /* wct == 12 */ |
be8e3b004
|
2216 |
inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579f
|
2217 |
if (wct == 14) |
8cc64c6ec
|
2218 2219 |
pSMB->ByteCount = cpu_to_le16(count + 1); else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { |
50c2f7538
|
2220 |
struct smb_com_writex_req *pSMBW = |
8cc64c6ec
|
2221 2222 2223 |
(struct smb_com_writex_req *)pSMB; pSMBW->ByteCount = cpu_to_le16(count + 5); } |
3e84469d0
|
2224 |
iov[0].iov_base = pSMB; |
790fe579f
|
2225 |
if (wct == 14) |
ec637e3ff
|
2226 2227 2228 |
iov[0].iov_len = smb_hdr_len + 4; else /* wct == 12 pad bigger by four bytes */ iov[0].iov_len = smb_hdr_len + 8; |
50c2f7538
|
2229 |
|
1da177e4c
|
2230 |
|
ba9ad7257
|
2231 |
rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0); |
44c581866
|
2232 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4c
|
2233 |
if (rc) { |
f96637be0
|
2234 2235 |
cifs_dbg(FYI, "Send error Write2 = %d ", rc); |
790fe579f
|
2236 |
} else if (resp_buf_type == 0) { |
ec637e3ff
|
2237 2238 |
/* presumably this can not happen, but best to be safe */ rc = -EIO; |
d6e04ae64
|
2239 |
} else { |
ad7a2926b
|
2240 |
WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; |
d6e04ae64
|
2241 2242 2243 |
*nbytes = le16_to_cpu(pSMBr->CountHigh); *nbytes = (*nbytes) << 16; *nbytes += le16_to_cpu(pSMBr->Count); |
6513a81e9
|
2244 2245 2246 2247 2248 2249 2250 2251 |
/* * Mask off high 16 bits when bytes written as returned by the * server is greater than bytes requested by the client. OS/2 * servers are known to set incorrect CountHigh values. */ if (*nbytes > count) *nbytes &= 0xFFFF; |
50c2f7538
|
2252 |
} |
1da177e4c
|
2253 |
|
4b8f930ff
|
2254 |
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
6d81ed1ec
|
2255 |
free_rsp_buf(resp_buf_type, iov[0].iov_base); |
1da177e4c
|
2256 |
|
50c2f7538
|
2257 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
2258 2259 2260 2261 |
since file handle passed in no longer valid */ return rc; } |
d6e04ae64
|
2262 |
|
6d5786a34
|
2263 2264 |
int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, |
9ee305b70
|
2265 2266 2267 2268 2269 2270 2271 |
const __u32 num_lock, LOCKING_ANDX_RANGE *buf) { int rc = 0; LOCK_REQ *pSMB = NULL; struct kvec iov[2]; int resp_buf_type; __u16 count; |
f96637be0
|
2272 2273 2274 |
cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d ", num_lock, num_unlock); |
9ee305b70
|
2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 |
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); if (rc) return rc; pSMB->Timeout = 0; pSMB->NumberOfLocks = cpu_to_le16(num_lock); pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); pSMB->LockType = lock_type; pSMB->AndXCommand = 0xFF; /* none */ pSMB->Fid = netfid; /* netfid stays le */ count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); inc_rfc1001_len(pSMB, count); pSMB->ByteCount = cpu_to_le16(count); iov[0].iov_base = (char *)pSMB; iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); iov[1].iov_base = (char *)buf; iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); |
44c581866
|
2296 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
9ee305b70
|
2297 2298 |
rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); if (rc) |
f96637be0
|
2299 2300 |
cifs_dbg(FYI, "Send error in cifs_lockv = %d ", rc); |
9ee305b70
|
2301 2302 2303 |
return rc; } |
d6e04ae64
|
2304 |
|
1da177e4c
|
2305 |
int |
6d5786a34
|
2306 |
CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f451
|
2307 |
const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4c
|
2308 |
const __u64 offset, const __u32 numUnlock, |
12fed00de
|
2309 2310 |
const __u32 numLock, const __u8 lockType, const bool waitFlag, const __u8 oplock_level) |
1da177e4c
|
2311 2312 2313 |
{ int rc = 0; LOCK_REQ *pSMB = NULL; |
aaa9bbe03
|
2314 |
/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4c
|
2315 |
int bytes_returned; |
a891f0f89
|
2316 |
int flags = 0; |
1da177e4c
|
2317 |
__u16 count; |
f96637be0
|
2318 2319 2320 |
cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d ", (int)waitFlag, numLock); |
46810cbf3
|
2321 |
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1da177e4c
|
2322 2323 |
if (rc) return rc; |
790fe579f
|
2324 |
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f89
|
2325 2326 |
/* no response expected */ flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP; |
1da177e4c
|
2327 |
pSMB->Timeout = 0; |
4b18f2a9c
|
2328 |
} else if (waitFlag) { |
a891f0f89
|
2329 |
flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4c
|
2330 2331 2332 2333 2334 2335 2336 2337 |
pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ } else { pSMB->Timeout = 0; } pSMB->NumberOfLocks = cpu_to_le16(numLock); pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); pSMB->LockType = lockType; |
12fed00de
|
2338 |
pSMB->OplockLevel = oplock_level; |
1da177e4c
|
2339 2340 |
pSMB->AndXCommand = 0xFF; /* none */ pSMB->Fid = smb_file_id; /* netfid stays le */ |
790fe579f
|
2341 |
if ((numLock != 0) || (numUnlock != 0)) { |
03776f451
|
2342 |
pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4c
|
2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 |
/* BB where to store pid high? */ pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); count = sizeof(LOCKING_ANDX_RANGE); } else { /* oplock break */ count = 0; } |
be8e3b004
|
2353 |
inc_rfc1001_len(pSMB, count); |
1da177e4c
|
2354 |
pSMB->ByteCount = cpu_to_le16(count); |
7ee1af765
|
2355 2356 |
if (waitFlag) { rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe03
|
2357 |
(struct smb_hdr *) pSMB, &bytes_returned); |
133672efb
|
2358 |
cifs_small_buf_release(pSMB); |
7ee1af765
|
2359 |
} else { |
a891f0f89
|
2360 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
133672efb
|
2361 |
/* SMB buffer freed by function above */ |
7ee1af765
|
2362 |
} |
44c581866
|
2363 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926b
|
2364 |
if (rc) |
f96637be0
|
2365 2366 |
cifs_dbg(FYI, "Send error in Lock = %d ", rc); |
1da177e4c
|
2367 |
|
50c2f7538
|
2368 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
2369 2370 2371 2372 2373 |
since file handle passed in no longer valid */ return rc; } int |
6d5786a34
|
2374 |
CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d7
|
2375 2376 2377 2378 |
const __u16 smb_file_id, const __u32 netpid, const loff_t start_offset, const __u64 len, struct file_lock *pLockData, const __u16 lock_type, const bool waitFlag) |
08547b036
|
2379 2380 2381 |
{ struct smb_com_transaction2_sfi_req *pSMB = NULL; struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
08547b036
|
2382 2383 |
struct cifs_posix_lock *parm_data; int rc = 0; |
3a5ff61c1
|
2384 |
int timeout = 0; |
08547b036
|
2385 |
int bytes_returned = 0; |
133672efb
|
2386 |
int resp_buf_type = 0; |
08547b036
|
2387 |
__u16 params, param_offset, offset, byte_count, count; |
133672efb
|
2388 |
struct kvec iov[1]; |
08547b036
|
2389 |
|
f96637be0
|
2390 2391 |
cifs_dbg(FYI, "Posix Lock "); |
fc94cdb94
|
2392 |
|
08547b036
|
2393 2394 2395 2396 2397 2398 |
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); if (rc) return rc; pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; |
50c2f7538
|
2399 |
params = 6; |
08547b036
|
2400 2401 2402 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; |
08547b036
|
2403 2404 2405 |
pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; |
08547b036
|
2406 2407 |
count = sizeof(struct cifs_posix_lock); pSMB->MaxParameterCount = cpu_to_le16(2); |
ad7a2926b
|
2408 |
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b036
|
2409 2410 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; |
c5fd363d7
|
2411 |
if (pLockData) |
08547b036
|
2412 2413 2414 2415 2416 2417 2418 2419 2420 |
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); else pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); |
50c2f7538
|
2421 |
parm_data = (struct cifs_posix_lock *) |
08547b036
|
2422 2423 2424 |
(((char *) &pSMB->hdr.Protocol) + offset); parm_data->lock_type = cpu_to_le16(lock_type); |
790fe579f
|
2425 |
if (waitFlag) { |
133672efb
|
2426 |
timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a1
|
2427 |
parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c1
|
2428 2429 2430 |
pSMB->Timeout = cpu_to_le32(-1); } else pSMB->Timeout = 0; |
4f6bcec91
|
2431 |
parm_data->pid = cpu_to_le32(netpid); |
c5fd363d7
|
2432 |
parm_data->start = cpu_to_le64(start_offset); |
cec6815a1
|
2433 |
parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b036
|
2434 2435 |
pSMB->DataOffset = cpu_to_le16(offset); |
f26282c9a
|
2436 |
pSMB->Fid = smb_file_id; |
08547b036
|
2437 2438 |
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); pSMB->Reserved4 = 0; |
be8e3b004
|
2439 |
inc_rfc1001_len(pSMB, byte_count); |
08547b036
|
2440 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af765
|
2441 2442 2443 2444 |
if (waitFlag) { rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned); } else { |
133672efb
|
2445 |
iov[0].iov_base = (char *)pSMB; |
be8e3b004
|
2446 |
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672efb
|
2447 2448 2449 2450 2451 |
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, &resp_buf_type, timeout); pSMB = NULL; /* request buf already freed by SendReceive2. Do not try to free it twice below on exit */ pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; |
7ee1af765
|
2452 |
} |
08547b036
|
2453 |
if (rc) { |
f96637be0
|
2454 2455 |
cifs_dbg(FYI, "Send error in Posix Lock = %d ", rc); |
c5fd363d7
|
2456 |
} else if (pLockData) { |
fc94cdb94
|
2457 2458 2459 2460 |
/* lock structure can be returned on get */ __u16 data_offset; __u16 data_count; rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
2461 |
if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb94
|
2462 2463 2464 |
rc = -EIO; /* bad smb */ goto plk_err_exit; } |
fc94cdb94
|
2465 2466 |
data_offset = le16_to_cpu(pSMBr->t2.DataOffset); data_count = le16_to_cpu(pSMBr->t2.DataCount); |
790fe579f
|
2467 |
if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb94
|
2468 2469 2470 2471 2472 |
rc = -EIO; goto plk_err_exit; } parm_data = (struct cifs_posix_lock *) ((char *)&pSMBr->hdr.Protocol + data_offset); |
bc09d141e
|
2473 |
if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb94
|
2474 |
pLockData->fl_type = F_UNLCK; |
f05337c6a
|
2475 2476 |
else { if (parm_data->lock_type == |
bc09d141e
|
2477 |
cpu_to_le16(CIFS_RDLCK)) |
f05337c6a
|
2478 2479 |
pLockData->fl_type = F_RDLCK; else if (parm_data->lock_type == |
bc09d141e
|
2480 |
cpu_to_le16(CIFS_WRLCK)) |
f05337c6a
|
2481 |
pLockData->fl_type = F_WRLCK; |
5443d130a
|
2482 2483 2484 2485 |
pLockData->fl_start = le64_to_cpu(parm_data->start); pLockData->fl_end = pLockData->fl_start + le64_to_cpu(parm_data->length) - 1; pLockData->fl_pid = le32_to_cpu(parm_data->pid); |
f05337c6a
|
2486 |
} |
08547b036
|
2487 |
} |
50c2f7538
|
2488 |
|
fc94cdb94
|
2489 |
plk_err_exit: |
08547b036
|
2490 2491 |
if (pSMB) cifs_small_buf_release(pSMB); |
6d81ed1ec
|
2492 |
free_rsp_buf(resp_buf_type, iov[0].iov_base); |
133672efb
|
2493 |
|
08547b036
|
2494 2495 2496 2497 2498 2499 2500 2501 |
/* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ return rc; } int |
6d5786a34
|
2502 |
CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4c
|
2503 2504 2505 |
{ int rc = 0; CLOSE_REQ *pSMB = NULL; |
f96637be0
|
2506 2507 |
cifs_dbg(FYI, "In CIFSSMBClose "); |
1da177e4c
|
2508 2509 2510 |
/* do not retry on dead session on close */ rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); |
790fe579f
|
2511 |
if (rc == -EAGAIN) |
1da177e4c
|
2512 2513 2514 |
return 0; if (rc) return rc; |
1da177e4c
|
2515 |
pSMB->FileID = (__u16) smb_file_id; |
b815f1e55
|
2516 |
pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4c
|
2517 |
pSMB->ByteCount = 0; |
792af7b05
|
2518 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c581866
|
2519 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4c
|
2520 |
if (rc) { |
790fe579f
|
2521 |
if (rc != -EINTR) { |
1da177e4c
|
2522 |
/* EINTR is expected when user ctl-c to kill app */ |
f96637be0
|
2523 2524 |
cifs_dbg(VFS, "Send error in Close = %d ", rc); |
1da177e4c
|
2525 2526 |
} } |
1da177e4c
|
2527 |
/* Since session is dead, file will be closed on server already */ |
790fe579f
|
2528 |
if (rc == -EAGAIN) |
1da177e4c
|
2529 2530 2531 2532 2533 2534 |
rc = 0; return rc; } int |
6d5786a34
|
2535 |
CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f2235
|
2536 2537 2538 |
{ int rc = 0; FLUSH_REQ *pSMB = NULL; |
f96637be0
|
2539 2540 |
cifs_dbg(FYI, "In CIFSSMBFlush "); |
b298f2235
|
2541 2542 2543 2544 2545 2546 2547 |
rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); if (rc) return rc; pSMB->FileID = (__u16) smb_file_id; pSMB->ByteCount = 0; |
792af7b05
|
2548 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
44c581866
|
2549 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f2235
|
2550 |
if (rc) |
f96637be0
|
2551 2552 |
cifs_dbg(VFS, "Send error in Flush = %d ", rc); |
b298f2235
|
2553 2554 2555 2556 2557 |
return rc; } int |
6d5786a34
|
2558 |
CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb98437
|
2559 2560 |
const char *from_name, const char *to_name, struct cifs_sb_info *cifs_sb) |
1da177e4c
|
2561 2562 2563 2564 2565 2566 2567 |
{ int rc = 0; RENAME_REQ *pSMB = NULL; RENAME_RSP *pSMBr = NULL; int bytes_returned; int name_len, name_len2; __u16 count; |
2baa26825
|
2568 |
int remap = cifs_remap(cifs_sb); |
1da177e4c
|
2569 |
|
f96637be0
|
2570 2571 |
cifs_dbg(FYI, "In CIFSSMBRename "); |
1da177e4c
|
2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 |
renameRetry: rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->BufferFormat = 0x04; pSMB->SearchAttributes = cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
8ceb98437
|
2584 2585 2586 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
2587 2588 2589 2590 2591 2592 |
name_len++; /* trailing null */ name_len *= 2; pSMB->OldFileName[name_len] = 0x04; /* pad */ /* protocol requires ASCII signature byte on Unicode string */ pSMB->OldFileName[name_len + 1] = 0x00; name_len2 = |
acbbb76a2
|
2593 |
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb98437
|
2594 2595 |
to_name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
2596 2597 |
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ |
50c2f7538
|
2598 |
} else { /* BB improve the check for buffer overruns BB */ |
8ceb98437
|
2599 |
name_len = strnlen(from_name, PATH_MAX); |
1da177e4c
|
2600 |
name_len++; /* trailing null */ |
8ceb98437
|
2601 2602 |
strncpy(pSMB->OldFileName, from_name, name_len); name_len2 = strnlen(to_name, PATH_MAX); |
1da177e4c
|
2603 2604 |
name_len2++; /* trailing null */ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
8ceb98437
|
2605 |
strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4c
|
2606 2607 2608 2609 2610 |
name_len2++; /* trailing null */ name_len2++; /* signature byte */ } count = 1 /* 1st signature byte */ + name_len + name_len2; |
be8e3b004
|
2611 |
inc_rfc1001_len(pSMB, count); |
1da177e4c
|
2612 2613 2614 2615 |
pSMB->ByteCount = cpu_to_le16(count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
2616 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926b
|
2617 |
if (rc) |
f96637be0
|
2618 2619 |
cifs_dbg(FYI, "Send error in rename = %d ", rc); |
1da177e4c
|
2620 |
|
1da177e4c
|
2621 2622 2623 2624 2625 2626 2627 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto renameRetry; return rc; } |
6d5786a34
|
2628 |
int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e57555
|
2629 |
int netfid, const char *target_name, |
50c2f7538
|
2630 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
2631 2632 2633 |
{ struct smb_com_transaction2_sfi_req *pSMB = NULL; struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; |
50c2f7538
|
2634 |
struct set_file_rename *rename_info; |
1da177e4c
|
2635 2636 2637 2638 2639 2640 |
char *data_offset; char dummy_string[30]; int rc = 0; int bytes_returned = 0; int len_of_str; __u16 params, param_offset, offset, count, byte_count; |
f96637be0
|
2641 2642 |
cifs_dbg(FYI, "Rename to File by handle "); |
1da177e4c
|
2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 |
rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 6; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; data_offset = (char *) (&pSMB->hdr.Protocol) + offset; rename_info = (struct set_file_rename *) data_offset; pSMB->MaxParameterCount = cpu_to_le16(2); |
ad7a2926b
|
2660 |
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4c
|
2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); /* construct random name ".cifs_tmp<inodenum><mid>" */ rename_info->overwrite = cpu_to_le32(1); rename_info->root_fid = 0; /* unicode only call */ |
790fe579f
|
2673 |
if (target_name == NULL) { |
50c2f7538
|
2674 |
sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a2
|
2675 2676 |
len_of_str = cifsConvertToUTF16((__le16 *)rename_info->target_name, |
737b758c9
|
2677 |
dummy_string, 24, nls_codepage, remap); |
1da177e4c
|
2678 |
} else { |
acbbb76a2
|
2679 2680 |
len_of_str = cifsConvertToUTF16((__le16 *)rename_info->target_name, |
50c2f7538
|
2681 2682 |
target_name, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2683 2684 |
} rename_info->target_name_len = cpu_to_le32(2 * len_of_str); |
391e57555
|
2685 |
count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str); |
1da177e4c
|
2686 2687 2688 2689 2690 2691 2692 |
byte_count += count; pSMB->DataCount = cpu_to_le16(count); pSMB->TotalDataCount = pSMB->DataCount; pSMB->Fid = netfid; pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); pSMB->Reserved4 = 0; |
be8e3b004
|
2693 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
2694 2695 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, |
50c2f7538
|
2696 |
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
2697 |
cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926b
|
2698 |
if (rc) |
f96637be0
|
2699 2700 2701 |
cifs_dbg(FYI, "Send error in Rename (by file handle) = %d ", rc); |
a5a2b489b
|
2702 |
|
1da177e4c
|
2703 2704 2705 2706 2707 2708 2709 2710 2711 |
cifs_buf_release(pSMB); /* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ return rc; } int |
6d5786a34
|
2712 2713 2714 |
CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, const char *fromName, const __u16 target_tid, const char *toName, const int flags, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
2715 2716 2717 2718 2719 2720 2721 |
{ int rc = 0; COPY_REQ *pSMB = NULL; COPY_RSP *pSMBr = NULL; int bytes_returned; int name_len, name_len2; __u16 count; |
f96637be0
|
2722 2723 |
cifs_dbg(FYI, "In CIFSSMBCopy "); |
1da177e4c
|
2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 |
copyRetry: rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->BufferFormat = 0x04; pSMB->Tid2 = target_tid; pSMB->Flags = cpu_to_le16(flags & COPY_TREE); if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
acbbb76a2
|
2736 2737 2738 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2739 2740 2741 2742 2743 |
name_len++; /* trailing null */ name_len *= 2; pSMB->OldFileName[name_len] = 0x04; /* pad */ /* protocol requires ASCII signature byte on Unicode string */ pSMB->OldFileName[name_len + 1] = 0x00; |
50c2f7538
|
2744 |
name_len2 = |
acbbb76a2
|
2745 2746 |
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], toName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2747 2748 |
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ |
50c2f7538
|
2749 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 |
name_len = strnlen(fromName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->OldFileName, fromName, name_len); name_len2 = strnlen(toName, PATH_MAX); name_len2++; /* trailing null */ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); name_len2++; /* trailing null */ name_len2++; /* signature byte */ } count = 1 /* 1st signature byte */ + name_len + name_len2; |
be8e3b004
|
2762 |
inc_rfc1001_len(pSMB, count); |
1da177e4c
|
2763 2764 2765 2766 2767 |
pSMB->ByteCount = cpu_to_le16(count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
2768 2769 2770 |
cifs_dbg(FYI, "Send error in copy = %d with %d files copied ", rc, le16_to_cpu(pSMBr->CopyCount)); |
1da177e4c
|
2771 |
} |
0d817bc0d
|
2772 |
cifs_buf_release(pSMB); |
1da177e4c
|
2773 2774 2775 2776 2777 2778 2779 2780 |
if (rc == -EAGAIN) goto copyRetry; return rc; } int |
6d5786a34
|
2781 |
CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4c
|
2782 |
const char *fromName, const char *toName, |
bc8ebdc4f
|
2783 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
2784 2785 2786 2787 2788 2789 2790 2791 2792 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; char *data_offset; int name_len; int name_len_target; int rc = 0; int bytes_returned = 0; __u16 params, param_offset, offset, byte_count; |
f96637be0
|
2793 2794 |
cifs_dbg(FYI, "In Symlink Unix style "); |
1da177e4c
|
2795 2796 2797 2798 2799 2800 2801 2802 |
createSymLinkRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
bc8ebdc4f
|
2803 2804 2805 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, /* find define for this maxpathcomponent */ PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2806 2807 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
2808 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 |
name_len = strnlen(fromName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, fromName, name_len); } params = 6 + name_len; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
2820 |
InformationLevel) - 4; |
1da177e4c
|
2821 2822 2823 2824 2825 |
offset = param_offset + params; data_offset = (char *) (&pSMB->hdr.Protocol) + offset; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len_target = |
bc8ebdc4f
|
2826 2827 2828 |
cifsConvertToUTF16((__le16 *) data_offset, toName, /* find define for this maxpathcomponent */ PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2829 2830 |
name_len_target++; /* trailing null */ name_len_target *= 2; |
50c2f7538
|
2831 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 |
name_len_target = strnlen(toName, PATH_MAX); name_len_target++; /* trailing null */ strncpy(data_offset, toName, name_len_target); } pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find exact max on data count below from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + name_len_target; pSMB->DataCount = cpu_to_le16(name_len_target); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); pSMB->Reserved4 = 0; |
be8e3b004
|
2852 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
2853 2854 2855 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
2856 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926b
|
2857 |
if (rc) |
f96637be0
|
2858 2859 2860 |
cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d ", rc); |
1da177e4c
|
2861 |
|
0d817bc0d
|
2862 |
cifs_buf_release(pSMB); |
1da177e4c
|
2863 2864 2865 2866 2867 2868 2869 2870 |
if (rc == -EAGAIN) goto createSymLinkRetry; return rc; } int |
6d5786a34
|
2871 |
CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4c
|
2872 |
const char *fromName, const char *toName, |
737b758c9
|
2873 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
2874 2875 2876 2877 2878 2879 2880 2881 2882 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; char *data_offset; int name_len; int name_len_target; int rc = 0; int bytes_returned = 0; __u16 params, param_offset, offset, byte_count; |
f96637be0
|
2883 2884 |
cifs_dbg(FYI, "In Create Hard link Unix style "); |
1da177e4c
|
2885 2886 2887 2888 2889 2890 2891 |
createHardLinkRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
acbbb76a2
|
2892 2893 |
name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2894 2895 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
2896 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 |
name_len = strnlen(toName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, toName, name_len); } params = 6 + name_len; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
2908 |
InformationLevel) - 4; |
1da177e4c
|
2909 2910 2911 2912 2913 |
offset = param_offset + params; data_offset = (char *) (&pSMB->hdr.Protocol) + offset; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len_target = |
acbbb76a2
|
2914 2915 |
cifsConvertToUTF16((__le16 *) data_offset, fromName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
2916 2917 |
name_len_target++; /* trailing null */ name_len_target *= 2; |
50c2f7538
|
2918 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 |
name_len_target = strnlen(fromName, PATH_MAX); name_len_target++; /* trailing null */ strncpy(data_offset, fromName, name_len_target); } pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find exact max on data count below from sess*/ pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + name_len_target; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->DataCount = cpu_to_le16(name_len_target); pSMB->TotalDataCount = pSMB->DataCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); pSMB->Reserved4 = 0; |
be8e3b004
|
2939 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
2940 2941 2942 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
2943 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926b
|
2944 |
if (rc) |
f96637be0
|
2945 2946 2947 |
cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d ", rc); |
1da177e4c
|
2948 2949 2950 2951 2952 2953 2954 2955 2956 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto createHardLinkRetry; return rc; } int |
6d5786a34
|
2957 |
CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1b
|
2958 2959 |
const char *from_name, const char *to_name, struct cifs_sb_info *cifs_sb) |
1da177e4c
|
2960 2961 2962 2963 2964 2965 2966 |
{ int rc = 0; NT_RENAME_REQ *pSMB = NULL; RENAME_RSP *pSMBr = NULL; int bytes_returned; int name_len, name_len2; __u16 count; |
2baa26825
|
2967 |
int remap = cifs_remap(cifs_sb); |
1da177e4c
|
2968 |
|
f96637be0
|
2969 2970 |
cifs_dbg(FYI, "In CIFSCreateHardLink "); |
1da177e4c
|
2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 |
winCreateHardLinkRetry: rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->SearchAttributes = cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); pSMB->ClusterCount = 0; pSMB->BufferFormat = 0x04; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
d6e906f1b
|
2988 2989 |
cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
2990 2991 |
name_len++; /* trailing null */ name_len *= 2; |
fcc7c09d9
|
2992 2993 2994 2995 |
/* protocol specifies ASCII buffer format (0x04) for unicode */ pSMB->OldFileName[name_len] = 0x04; pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ |
1da177e4c
|
2996 |
name_len2 = |
acbbb76a2
|
2997 |
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1b
|
2998 2999 |
to_name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
3000 3001 |
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; name_len2 *= 2; /* convert to bytes */ |
50c2f7538
|
3002 |
} else { /* BB improve the check for buffer overruns BB */ |
d6e906f1b
|
3003 |
name_len = strnlen(from_name, PATH_MAX); |
1da177e4c
|
3004 |
name_len++; /* trailing null */ |
d6e906f1b
|
3005 3006 |
strncpy(pSMB->OldFileName, from_name, name_len); name_len2 = strnlen(to_name, PATH_MAX); |
1da177e4c
|
3007 3008 |
name_len2++; /* trailing null */ pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
d6e906f1b
|
3009 |
strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2); |
1da177e4c
|
3010 3011 3012 3013 3014 |
name_len2++; /* trailing null */ name_len2++; /* signature byte */ } count = 1 /* string type byte */ + name_len + name_len2; |
be8e3b004
|
3015 |
inc_rfc1001_len(pSMB, count); |
1da177e4c
|
3016 3017 3018 3019 |
pSMB->ByteCount = cpu_to_le16(count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
3020 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926b
|
3021 |
if (rc) |
f96637be0
|
3022 3023 |
cifs_dbg(FYI, "Send error in hard link (NT rename) = %d ", rc); |
ad7a2926b
|
3024 |
|
1da177e4c
|
3025 3026 3027 3028 3029 3030 3031 3032 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto winCreateHardLinkRetry; return rc; } int |
6d5786a34
|
3033 |
CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b96960
|
3034 |
const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4f
|
3035 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
3036 3037 3038 3039 3040 3041 3042 3043 |
{ /* SMB_QUERY_FILE_UNIX_LINK */ TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; __u16 params, byte_count; |
460b96960
|
3044 |
char *data_start; |
1da177e4c
|
3045 |
|
f96637be0
|
3046 3047 |
cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s ", searchName); |
1da177e4c
|
3048 3049 3050 3051 3052 3053 3054 3055 3056 |
querySymLinkRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
bc8ebdc4f
|
3057 3058 3059 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
3060 3061 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
3062 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
3063 3064 3065 3066 3067 3068 3069 3070 |
name_len = strnlen(searchName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, searchName, name_len); } params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
46a7574ca
|
3071 |
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4c
|
3072 3073 3074 3075 3076 3077 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
3078 |
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); pSMB->Reserved4 = 0; |
be8e3b004
|
3089 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
3090 3091 3092 3093 3094 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
3095 3096 |
cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d ", rc); |
1da177e4c
|
3097 3098 3099 3100 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4c
|
3101 |
/* BB also check enough total bytes returned */ |
820a803ff
|
3102 |
if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b96960
|
3103 |
rc = -EIO; |
1da177e4c
|
3104 |
else { |
0e0d2cf32
|
3105 |
bool is_unicode; |
460b96960
|
3106 3107 3108 3109 |
u16 count = le16_to_cpu(pSMBr->t2.DataCount); data_start = ((char *) &pSMBr->hdr.Protocol) + le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4c
|
3110 |
|
0e0d2cf32
|
3111 3112 3113 3114 |
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) is_unicode = true; else is_unicode = false; |
737b758c9
|
3115 |
/* BB FIXME investigate remapping reserved chars here */ |
acbbb76a2
|
3116 3117 |
*symlinkinfo = cifs_strndup_from_utf16(data_start, count, is_unicode, nls_codepage); |
8b6427a2a
|
3118 |
if (!*symlinkinfo) |
460b96960
|
3119 |
rc = -ENOMEM; |
1da177e4c
|
3120 3121 3122 3123 3124 3125 3126 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto querySymLinkRetry; return rc; } |
c52a95545
|
3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 |
/* * Recent Windows versions now create symlinks more frequently * and they use the "reparse point" mechanism below. We can of course * do symlinks nicely to Samba and other servers which support the * CIFS Unix Extensions and we can also do SFU symlinks and "client only" * "MF" symlinks optionally, but for recent Windows we really need to * reenable the code below and fix the cifs_symlink callers to handle this. * In the interim this code has been moved to its own config option so * it is not compiled in by default until callers fixed up and more tested. */ |
1da177e4c
|
3137 |
int |
d244bf2df
|
3138 3139 3140 |
CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, char **symlinkinfo, const struct nls_table *nls_codepage) |
1da177e4c
|
3141 3142 3143 |
{ int rc = 0; int bytes_returned; |
50c2f7538
|
3144 3145 |
struct smb_com_transaction_ioctl_req *pSMB; struct smb_com_transaction_ioctl_rsp *pSMBr; |
d244bf2df
|
3146 3147 3148 |
bool is_unicode; unsigned int sub_len; char *sub_start; |
c31f33071
|
3149 3150 |
struct reparse_symlink_data *reparse_buf; struct reparse_posix_data *posix_buf; |
d244bf2df
|
3151 3152 3153 3154 3155 |
__u32 data_offset, data_count; char *end_of_smb; cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u ", fid); |
1da177e4c
|
3156 3157 3158 3159 3160 3161 3162 3163 3164 |
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->TotalParameterCount = 0 ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le32(2); /* BB find exact data count max from sess structure BB */ |
c974befa4
|
3165 |
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4c
|
3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 |
pSMB->MaxSetupCount = 4; pSMB->Reserved = 0; pSMB->ParameterOffset = 0; pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 4; pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); pSMB->IsFsctl = 1; /* FSCTL */ pSMB->IsRootFlag = 0; pSMB->Fid = fid; /* file handle always le */ pSMB->ByteCount = 0; rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
3183 3184 |
cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d ", rc); |
d244bf2df
|
3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 |
goto qreparse_out; } data_offset = le32_to_cpu(pSMBr->DataOffset); data_count = le32_to_cpu(pSMBr->DataCount); if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { /* BB also check enough total bytes returned */ rc = -EIO; /* bad smb */ goto qreparse_out; } if (!data_count || (data_count > 2048)) { rc = -EIO; cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl "); goto qreparse_out; } end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; |
c31f33071
|
3202 |
reparse_buf = (struct reparse_symlink_data *) |
d244bf2df
|
3203 3204 3205 3206 |
((char *)&pSMBr->hdr.Protocol + data_offset); if ((char *)reparse_buf >= end_of_smb) { rc = -EIO; goto qreparse_out; |
1da177e4c
|
3207 |
} |
c31f33071
|
3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 |
if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { cifs_dbg(FYI, "NFS style reparse tag "); posix_buf = (struct reparse_posix_data *)reparse_buf; if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { cifs_dbg(FYI, "unsupported file type 0x%llx ", le64_to_cpu(posix_buf->InodeType)); rc = -EOPNOTSUPP; goto qreparse_out; } is_unicode = true; sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); if (posix_buf->PathBuffer + sub_len > end_of_smb) { cifs_dbg(FYI, "reparse buf beyond SMB "); rc = -EIO; goto qreparse_out; } *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, sub_len, is_unicode, nls_codepage); goto qreparse_out; } else if (reparse_buf->ReparseTag != cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { rc = -EOPNOTSUPP; goto qreparse_out; } /* Reparse tag is NTFS symlink */ sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + reparse_buf->PathBuffer; sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); if (sub_start + sub_len > end_of_smb) { |
d244bf2df
|
3242 3243 3244 3245 3246 |
cifs_dbg(FYI, "reparse buf beyond SMB "); rc = -EIO; goto qreparse_out; } |
d244bf2df
|
3247 3248 3249 3250 |
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) is_unicode = true; else is_unicode = false; |
989c7e512
|
3251 |
|
d244bf2df
|
3252 3253 3254 3255 3256 |
/* BB FIXME investigate remapping reserved chars here */ *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, nls_codepage); if (!*symlinkinfo) rc = -ENOMEM; |
1da177e4c
|
3257 |
qreparse_out: |
4a6d87f1d
|
3258 |
cifs_buf_release(pSMB); |
1da177e4c
|
3259 |
|
d244bf2df
|
3260 3261 3262 3263 |
/* * Note: On -EAGAIN error only caller can retry on handle based calls * since file handle passed in no longer valid. */ |
1da177e4c
|
3264 3265 |
return rc; } |
c7f508a99
|
3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 |
int CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid) { int rc = 0; int bytes_returned; struct smb_com_transaction_compr_ioctl_req *pSMB; struct smb_com_transaction_ioctl_rsp *pSMBr; cifs_dbg(FYI, "Set compression for %u ", fid); rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); pSMB->TotalParameterCount = 0; |
bc09d141e
|
3285 |
pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a99
|
3286 3287 3288 3289 3290 |
pSMB->MaxParameterCount = 0; pSMB->MaxDataCount = 0; pSMB->MaxSetupCount = 4; pSMB->Reserved = 0; pSMB->ParameterOffset = 0; |
bc09d141e
|
3291 |
pSMB->DataCount = cpu_to_le32(2); |
c7f508a99
|
3292 3293 3294 3295 |
pSMB->DataOffset = cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, compression_state) - 4); /* 84 */ pSMB->SetupCount = 4; |
bc09d141e
|
3296 |
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a99
|
3297 |
pSMB->ParameterCount = 0; |
bc09d141e
|
3298 |
pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a99
|
3299 3300 3301 3302 |
pSMB->IsFsctl = 1; /* FSCTL */ pSMB->IsRootFlag = 0; pSMB->Fid = fid; /* file handle always le */ /* 3 byte pad, followed by 2 byte compress state */ |
bc09d141e
|
3303 |
pSMB->ByteCount = cpu_to_le16(5); |
c7f508a99
|
3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 |
inc_rfc1001_len(pSMB, 5); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) cifs_dbg(FYI, "Send error in SetCompression = %d ", rc); cifs_buf_release(pSMB); /* * Note: On -EAGAIN error only caller can retry on handle based calls * since file handle passed in no longer valid. */ return rc; } |
1da177e4c
|
3320 3321 3322 |
#ifdef CONFIG_CIFS_POSIX /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ |
50c2f7538
|
3323 3324 |
static void cifs_convert_ace(posix_acl_xattr_entry *ace, struct cifs_posix_ace *cifs_ace) |
1da177e4c
|
3325 3326 |
{ /* u8 cifs fields do not need le conversion */ |
ff7feac96
|
3327 3328 3329 |
ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); |
f96637be0
|
3330 3331 3332 3333 3334 |
/* cifs_dbg(FYI, "perm %d tag %d id %d ", ace->e_perm, ace->e_tag, ace->e_id); */ |
1da177e4c
|
3335 3336 3337 3338 3339 |
return; } /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ |
50c2f7538
|
3340 3341 |
static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, const int acl_type, const int size_of_data_area) |
1da177e4c
|
3342 3343 3344 3345 |
{ int size = 0; int i; __u16 count; |
50c2f7538
|
3346 3347 3348 |
struct cifs_posix_ace *pACE; struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; |
1da177e4c
|
3349 3350 3351 |
if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) return -EOPNOTSUPP; |
45987e006
|
3352 |
if (acl_type == ACL_TYPE_ACCESS) { |
1da177e4c
|
3353 3354 3355 3356 3357 |
count = le16_to_cpu(cifs_acl->access_entry_count); pACE = &cifs_acl->ace_array[0]; size = sizeof(struct cifs_posix_acl); size += sizeof(struct cifs_posix_ace) * count; /* check if we would go beyond end of SMB */ |
790fe579f
|
3358 |
if (size_of_data_area < size) { |
f96637be0
|
3359 3360 3361 |
cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d ", size_of_data_area, size); |
1da177e4c
|
3362 3363 |
return -EINVAL; } |
45987e006
|
3364 |
} else if (acl_type == ACL_TYPE_DEFAULT) { |
1da177e4c
|
3365 3366 3367 3368 3369 3370 3371 3372 |
count = le16_to_cpu(cifs_acl->access_entry_count); size = sizeof(struct cifs_posix_acl); size += sizeof(struct cifs_posix_ace) * count; /* skip past access ACEs to get to default ACEs */ pACE = &cifs_acl->ace_array[count]; count = le16_to_cpu(cifs_acl->default_entry_count); size += sizeof(struct cifs_posix_ace) * count; /* check if we would go beyond end of SMB */ |
790fe579f
|
3373 |
if (size_of_data_area < size) |
1da177e4c
|
3374 3375 3376 3377 3378 3379 3380 |
return -EINVAL; } else { /* illegal type */ return -EINVAL; } size = posix_acl_xattr_size(count); |
790fe579f
|
3381 |
if ((buflen == 0) || (local_acl == NULL)) { |
50c2f7538
|
3382 |
/* used to query ACL EA size */ |
790fe579f
|
3383 |
} else if (size > buflen) { |
1da177e4c
|
3384 3385 |
return -ERANGE; } else /* buffer big enough */ { |
ff7feac96
|
3386 |
local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); |
50c2f7538
|
3387 3388 3389 |
for (i = 0; i < count ; i++) { cifs_convert_ace(&local_acl->a_entries[i], pACE); pACE++; |
1da177e4c
|
3390 3391 3392 3393 |
} } return size; } |
50c2f7538
|
3394 3395 |
static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, const posix_acl_xattr_entry *local_ace) |
1da177e4c
|
3396 3397 |
{ __u16 rc = 0; /* 0 = ACL converted ok */ |
ff7feac96
|
3398 3399 |
cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); |
1da177e4c
|
3400 |
/* BB is there a better way to handle the large uid? */ |
790fe579f
|
3401 |
if (local_ace->e_id == cpu_to_le32(-1)) { |
1da177e4c
|
3402 3403 |
/* Probably no need to le convert -1 on any arch but can not hurt */ cifs_ace->cifs_uid = cpu_to_le64(-1); |
50c2f7538
|
3404 |
} else |
ff7feac96
|
3405 |
cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); |
f96637be0
|
3406 3407 3408 3409 3410 |
/* cifs_dbg(FYI, "perm %d tag %d id %d ", ace->e_perm, ace->e_tag, ace->e_id); */ |
1da177e4c
|
3411 3412 3413 3414 |
return rc; } /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ |
50c2f7538
|
3415 3416 |
static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, const int buflen, const int acl_type) |
1da177e4c
|
3417 3418 |
{ __u16 rc = 0; |
50c2f7538
|
3419 3420 |
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; |
1da177e4c
|
3421 3422 |
int count; int i; |
790fe579f
|
3423 |
if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) |
1da177e4c
|
3424 3425 3426 |
return 0; count = posix_acl_xattr_count((size_t)buflen); |
f96637be0
|
3427 3428 3429 |
cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d ", count, buflen, le32_to_cpu(local_acl->a_version)); |
790fe579f
|
3430 |
if (le32_to_cpu(local_acl->a_version) != 2) { |
f96637be0
|
3431 3432 3433 |
cifs_dbg(FYI, "unknown POSIX ACL version %d ", le32_to_cpu(local_acl->a_version)); |
1da177e4c
|
3434 3435 3436 |
return 0; } cifs_acl->version = cpu_to_le16(1); |
b1d933564
|
3437 |
if (acl_type == ACL_TYPE_ACCESS) { |
ff7feac96
|
3438 |
cifs_acl->access_entry_count = cpu_to_le16(count); |
bc09d141e
|
3439 |
cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); |
b1d933564
|
3440 |
} else if (acl_type == ACL_TYPE_DEFAULT) { |
ff7feac96
|
3441 |
cifs_acl->default_entry_count = cpu_to_le16(count); |
bc09d141e
|
3442 |
cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); |
b1d933564
|
3443 |
} else { |
f96637be0
|
3444 3445 |
cifs_dbg(FYI, "unknown ACL type %d ", acl_type); |
1da177e4c
|
3446 3447 |
return 0; } |
50c2f7538
|
3448 |
for (i = 0; i < count; i++) { |
1da177e4c
|
3449 3450 |
rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &local_acl->a_entries[i]); |
790fe579f
|
3451 |
if (rc != 0) { |
1da177e4c
|
3452 3453 3454 3455 |
/* ACE not converted */ break; } } |
790fe579f
|
3456 |
if (rc == 0) { |
1da177e4c
|
3457 3458 3459 3460 3461 3462 3463 3464 |
rc = (__u16)(count * sizeof(struct cifs_posix_ace)); rc += sizeof(struct cifs_posix_acl); /* BB add check to make sure ACL does not overflow SMB */ } return rc; } int |
6d5786a34
|
3465 |
CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f7538
|
3466 3467 3468 |
const unsigned char *searchName, char *acl_inf, const int buflen, const int acl_type, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
3469 3470 3471 3472 3473 3474 3475 3476 |
{ /* SMB_QUERY_POSIX_ACL */ TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; __u16 params, byte_count; |
50c2f7538
|
3477 |
|
f96637be0
|
3478 3479 |
cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s ", searchName); |
1da177e4c
|
3480 3481 3482 3483 3484 3485 |
queryAclRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
50c2f7538
|
3486 |
|
1da177e4c
|
3487 3488 |
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
3489 3490 3491 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
3492 3493 3494 3495 |
name_len++; /* trailing null */ name_len *= 2; pSMB->FileName[name_len] = 0; pSMB->FileName[name_len+1] = 0; |
50c2f7538
|
3496 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
3497 3498 3499 3500 3501 3502 3503 3504 |
name_len = strnlen(searchName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, searchName, name_len); } params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
50c2f7538
|
3505 |
/* BB find exact max data count below from sess structure BB */ |
1da177e4c
|
3506 3507 3508 3509 3510 3511 3512 |
pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16( |
50c2f7538
|
3513 3514 |
offsetof(struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); pSMB->Reserved4 = 0; |
be8e3b004
|
3525 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
3526 3527 3528 3529 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
3530 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
1da177e4c
|
3531 |
if (rc) { |
f96637be0
|
3532 3533 |
cifs_dbg(FYI, "Send error in Query POSIX ACL = %d ", rc); |
1da177e4c
|
3534 3535 |
} else { /* decode response */ |
50c2f7538
|
3536 |
|
1da177e4c
|
3537 |
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4c
|
3538 |
/* BB also check enough total bytes returned */ |
820a803ff
|
3539 |
if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4c
|
3540 3541 3542 3543 3544 3545 |
rc = -EIO; /* bad smb */ else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); __u16 count = le16_to_cpu(pSMBr->t2.DataCount); rc = cifs_copy_posix_acl(acl_inf, (char *)&pSMBr->hdr.Protocol+data_offset, |
50c2f7538
|
3546 |
buflen, acl_type, count); |
1da177e4c
|
3547 3548 3549 3550 3551 3552 3553 3554 3555 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto queryAclRetry; return rc; } int |
6d5786a34
|
3556 |
CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f7538
|
3557 3558 3559 3560 |
const unsigned char *fileName, const char *local_acl, const int buflen, const int acl_type, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
3561 3562 3563 3564 3565 3566 3567 3568 |
{ struct smb_com_transaction2_spi_req *pSMB = NULL; struct smb_com_transaction2_spi_rsp *pSMBr = NULL; char *parm_data; int name_len; int rc = 0; int bytes_returned = 0; __u16 params, byte_count, data_count, param_offset, offset; |
f96637be0
|
3569 3570 |
cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s ", fileName); |
1da177e4c
|
3571 3572 |
setAclRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
50c2f7538
|
3573 |
(void **) &pSMBr); |
1da177e4c
|
3574 3575 3576 3577 |
if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
3578 3579 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
3580 3581 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
3582 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
3583 3584 3585 3586 3587 3588 |
name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, fileName, name_len); } params = 6 + name_len; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
3589 3590 |
/* BB find max SMB size from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
3591 3592 3593 3594 3595 3596 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
3597 |
InformationLevel) - 4; |
1da177e4c
|
3598 3599 3600 3601 3602 |
offset = param_offset + params; parm_data = ((char *) &pSMB->hdr.Protocol) + offset; pSMB->ParameterOffset = cpu_to_le16(param_offset); /* convert to on the wire format for POSIX ACL */ |
50c2f7538
|
3603 |
data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); |
1da177e4c
|
3604 |
|
790fe579f
|
3605 |
if (data_count == 0) { |
1da177e4c
|
3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 |
rc = -EOPNOTSUPP; goto setACLerrorExit; } pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); byte_count = 3 /* pad */ + params + data_count; pSMB->DataCount = cpu_to_le16(data_count); pSMB->TotalDataCount = pSMB->DataCount; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->Reserved4 = 0; |
be8e3b004
|
3620 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
3621 3622 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
50c2f7538
|
3623 |
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
3624 |
if (rc) |
f96637be0
|
3625 3626 |
cifs_dbg(FYI, "Set POSIX ACL returned %d ", rc); |
1da177e4c
|
3627 3628 3629 3630 3631 3632 3633 |
setACLerrorExit: cifs_buf_release(pSMB); if (rc == -EAGAIN) goto setAclRetry; return rc; } |
f654bac22
|
3634 3635 |
/* BB fix tabs in this function FIXME BB */ int |
6d5786a34
|
3636 |
CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926b
|
3637 |
const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac22
|
3638 |
{ |
50c2f7538
|
3639 3640 3641 3642 3643 |
int rc = 0; struct smb_t2_qfi_req *pSMB = NULL; struct smb_t2_qfi_rsp *pSMBr = NULL; int bytes_returned; __u16 params, byte_count; |
f654bac22
|
3644 |
|
f96637be0
|
3645 3646 |
cifs_dbg(FYI, "In GetExtAttr "); |
790fe579f
|
3647 3648 |
if (tcon == NULL) return -ENODEV; |
f654bac22
|
3649 3650 |
GetExtAttrRetry: |
790fe579f
|
3651 3652 3653 3654 |
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
f654bac22
|
3655 |
|
ad7a2926b
|
3656 |
params = 2 /* level */ + 2 /* fid */; |
790fe579f
|
3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 |
pSMB->t2.TotalDataCount = 0; pSMB->t2.MaxParameterCount = cpu_to_le16(4); /* BB find exact max data count below from sess structure BB */ pSMB->t2.MaxDataCount = cpu_to_le16(4000); pSMB->t2.MaxSetupCount = 0; pSMB->t2.Reserved = 0; pSMB->t2.Flags = 0; pSMB->t2.Timeout = 0; pSMB->t2.Reserved2 = 0; pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, Fid) - 4); pSMB->t2.DataCount = 0; pSMB->t2.DataOffset = 0; pSMB->t2.SetupCount = 1; pSMB->t2.Reserved3 = 0; pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->t2.TotalParameterCount = cpu_to_le16(params); pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); pSMB->Pad = 0; |
f654bac22
|
3678 |
pSMB->Fid = netfid; |
be8e3b004
|
3679 |
inc_rfc1001_len(pSMB, byte_count); |
790fe579f
|
3680 3681 3682 3683 3684 |
pSMB->t2.ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
3685 3686 |
cifs_dbg(FYI, "error %d in GetExtAttr ", rc); |
790fe579f
|
3687 3688 3689 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
790fe579f
|
3690 |
/* BB also check enough total bytes returned */ |
820a803ff
|
3691 |
if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579f
|
3692 3693 3694 3695 3696 3697 3698 3699 3700 |
/* If rc should we check for EOPNOSUPP and disable the srvino flag? or in caller? */ rc = -EIO; /* bad smb */ else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); __u16 count = le16_to_cpu(pSMBr->t2.DataCount); struct file_chattr_info *pfinfo; /* BB Do we need a cast or hash here ? */ if (count != 16) { |
f96637be0
|
3701 3702 |
cifs_dbg(FYI, "Illegal size ret in GetExtAttr "); |
790fe579f
|
3703 3704 3705 3706 3707 3708 |
rc = -EIO; goto GetExtAttrOut; } pfinfo = (struct file_chattr_info *) (data_offset + (char *) &pSMBr->hdr.Protocol); *pExtAttrBits = le64_to_cpu(pfinfo->mode); |
f654bac22
|
3709 |
*pMask = le64_to_cpu(pfinfo->mask); |
790fe579f
|
3710 3711 |
} } |
f654bac22
|
3712 |
GetExtAttrOut: |
790fe579f
|
3713 3714 3715 3716 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto GetExtAttrRetry; return rc; |
f654bac22
|
3717 |
} |
f654bac22
|
3718 |
#endif /* CONFIG_POSIX */ |
1da177e4c
|
3719 |
|
79df1baee
|
3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 |
#ifdef CONFIG_CIFS_ACL /* * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that * all NT TRANSACTS that we init here have total parm and data under about 400 * bytes (to fit in small cifs buffer size), which is the case so far, it * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of * returned setup area) and MaxParameterCount (returned parms size) must be set * by caller */ static int smb_init_nttransact(const __u16 sub_command, const int setup_count, |
96daf2b09
|
3731 |
const int parm_len, struct cifs_tcon *tcon, |
79df1baee
|
3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 |
void **ret_buf) { int rc; __u32 temp_offset; struct smb_com_ntransact_req *pSMB; rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, (void **)&pSMB); if (rc) return rc; *ret_buf = (void *)pSMB; pSMB->Reserved = 0; pSMB->TotalParameterCount = cpu_to_le32(parm_len); pSMB->TotalDataCount = 0; |
c974befa4
|
3746 |
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1baee
|
3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 |
pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->DataCount = pSMB->TotalDataCount; temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + (setup_count * 2) - 4 /* for rfc1001 length itself */; pSMB->ParameterOffset = cpu_to_le32(temp_offset); pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ pSMB->SubCommand = cpu_to_le16(sub_command); return 0; } static int validate_ntransact(char *buf, char **ppparm, char **ppdata, __u32 *pparmlen, __u32 *pdatalen) { char *end_of_smb; __u32 data_count, data_offset, parm_count, parm_offset; struct smb_com_ntransact_rsp *pSMBr; |
820a803ff
|
3765 |
u16 bcc; |
79df1baee
|
3766 3767 3768 3769 3770 3771 3772 3773 |
*pdatalen = 0; *pparmlen = 0; if (buf == NULL) return -EINVAL; pSMBr = (struct smb_com_ntransact_rsp *)buf; |
820a803ff
|
3774 3775 |
bcc = get_bcc(&pSMBr->hdr); end_of_smb = 2 /* sizeof byte count */ + bcc + |
79df1baee
|
3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 |
(char *)&pSMBr->ByteCount; data_offset = le32_to_cpu(pSMBr->DataOffset); data_count = le32_to_cpu(pSMBr->DataCount); parm_offset = le32_to_cpu(pSMBr->ParameterOffset); parm_count = le32_to_cpu(pSMBr->ParameterCount); *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; /* should we also check that parm and data areas do not overlap? */ if (*ppparm > end_of_smb) { |
f96637be0
|
3788 3789 |
cifs_dbg(FYI, "parms start after end of smb "); |
79df1baee
|
3790 3791 |
return -EINVAL; } else if (parm_count + *ppparm > end_of_smb) { |
f96637be0
|
3792 3793 |
cifs_dbg(FYI, "parm end after end of smb "); |
79df1baee
|
3794 3795 |
return -EINVAL; } else if (*ppdata > end_of_smb) { |
f96637be0
|
3796 3797 |
cifs_dbg(FYI, "data starts after end of smb "); |
79df1baee
|
3798 3799 |
return -EINVAL; } else if (data_count + *ppdata > end_of_smb) { |
f96637be0
|
3800 3801 3802 3803 |
cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p ", *ppdata, data_count, (data_count + *ppdata), end_of_smb, pSMBr); |
79df1baee
|
3804 |
return -EINVAL; |
820a803ff
|
3805 |
} else if (parm_count + data_count > bcc) { |
f96637be0
|
3806 3807 |
cifs_dbg(FYI, "parm count and data count larger than SMB "); |
79df1baee
|
3808 3809 3810 3811 3812 3813 |
return -EINVAL; } *pdatalen = data_count; *pparmlen = parm_count; return 0; } |
0a4b92c05
|
3814 3815 |
/* Get Security Descriptor (by handle) from remote server for a file or dir */ int |
6d5786a34
|
3816 |
CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c4
|
3817 |
struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c05
|
3818 3819 3820 |
{ int rc = 0; int buf_type = 0; |
ad7a2926b
|
3821 |
QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c05
|
3822 |
struct kvec iov[1]; |
f96637be0
|
3823 3824 |
cifs_dbg(FYI, "GetCifsACL "); |
0a4b92c05
|
3825 |
|
630f3f0c4
|
3826 3827 |
*pbuflen = 0; *acl_inf = NULL; |
b9c7a2bb1
|
3828 |
rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c05
|
3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 |
8 /* parm len */, tcon, (void **) &pSMB); if (rc) return rc; pSMB->MaxParameterCount = cpu_to_le32(4); /* BB TEST with big acls that might need to be e.g. larger than 16K */ pSMB->MaxSetupCount = 0; pSMB->Fid = fid; /* file handle always le */ pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | CIFS_ACL_DACL); pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ |
be8e3b004
|
3840 |
inc_rfc1001_len(pSMB, 11); |
0a4b92c05
|
3841 |
iov[0].iov_base = (char *)pSMB; |
be8e3b004
|
3842 |
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c05
|
3843 |
|
a761ac579
|
3844 |
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
7749981ec
|
3845 |
0); |
44c581866
|
3846 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c05
|
3847 |
if (rc) { |
f96637be0
|
3848 3849 |
cifs_dbg(FYI, "Send error in QuerySecDesc = %d ", rc); |
0a4b92c05
|
3850 |
} else { /* decode response */ |
ad7a2926b
|
3851 |
__le32 *parm; |
630f3f0c4
|
3852 3853 |
__u32 parm_len; __u32 acl_len; |
50c2f7538
|
3854 |
struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c4
|
3855 |
char *pdata; |
0a4b92c05
|
3856 3857 |
/* validate_nttransact */ |
50c2f7538
|
3858 |
rc = validate_ntransact(iov[0].iov_base, (char **)&parm, |
630f3f0c4
|
3859 |
&pdata, &parm_len, pbuflen); |
790fe579f
|
3860 |
if (rc) |
0a4b92c05
|
3861 3862 |
goto qsec_out; pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; |
f96637be0
|
3863 3864 3865 |
cifs_dbg(FYI, "smb %p parm %p data %p ", pSMBr, parm, *acl_inf); |
0a4b92c05
|
3866 3867 3868 |
if (le32_to_cpu(pSMBr->ParameterCount) != 4) { rc = -EIO; /* bad smb */ |
630f3f0c4
|
3869 |
*pbuflen = 0; |
0a4b92c05
|
3870 3871 3872 3873 |
goto qsec_out; } /* BB check that data area is minimum length and as big as acl_len */ |
af6f4612f
|
3874 |
acl_len = le32_to_cpu(*parm); |
630f3f0c4
|
3875 |
if (acl_len != *pbuflen) { |
f96637be0
|
3876 3877 3878 |
cifs_dbg(VFS, "acl length %d does not match %d ", acl_len, *pbuflen); |
630f3f0c4
|
3879 3880 3881 |
if (*pbuflen > acl_len) *pbuflen = acl_len; } |
0a4b92c05
|
3882 |
|
630f3f0c4
|
3883 3884 3885 3886 |
/* check if buffer is big enough for the acl header followed by the smallest SID */ if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || (*pbuflen >= 64 * 1024)) { |
f96637be0
|
3887 3888 |
cifs_dbg(VFS, "bad acl length %d ", *pbuflen); |
630f3f0c4
|
3889 3890 3891 |
rc = -EINVAL; *pbuflen = 0; } else { |
f7f7c1850
|
3892 |
*acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c4
|
3893 3894 3895 3896 |
if (*acl_inf == NULL) { *pbuflen = 0; rc = -ENOMEM; } |
630f3f0c4
|
3897 |
} |
0a4b92c05
|
3898 3899 |
} qsec_out: |
6d81ed1ec
|
3900 |
free_rsp_buf(buf_type, iov[0].iov_base); |
4b8f930ff
|
3901 |
/* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ |
0a4b92c05
|
3902 3903 |
return rc; } |
97837582b
|
3904 3905 |
int |
6d5786a34
|
3906 |
CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff37696
|
3907 |
struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582b
|
3908 3909 3910 3911 3912 |
{ __u16 byte_count, param_count, data_count, param_offset, data_offset; int rc = 0; int bytes_returned = 0; SET_SEC_DESC_REQ *pSMB = NULL; |
b2a3ad9ca
|
3913 |
void *pSMBr; |
97837582b
|
3914 3915 |
setCifsAclRetry: |
b2a3ad9ca
|
3916 |
rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582b
|
3917 |
if (rc) |
b2a3ad9ca
|
3918 |
return rc; |
97837582b
|
3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; param_count = 8; param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; data_count = acllen; data_offset = param_offset + param_count; byte_count = 3 /* pad */ + param_count; pSMB->DataCount = cpu_to_le32(data_count); pSMB->TotalDataCount = pSMB->DataCount; pSMB->MaxParameterCount = cpu_to_le32(4); pSMB->MaxDataCount = cpu_to_le32(16384); pSMB->ParameterCount = cpu_to_le32(param_count); pSMB->ParameterOffset = cpu_to_le32(param_offset); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->DataOffset = cpu_to_le32(data_offset); pSMB->SetupCount = 0; pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); pSMB->ByteCount = cpu_to_le16(byte_count+data_count); pSMB->Fid = fid; /* file handle always le */ pSMB->Reserved2 = 0; |
a5ff37696
|
3943 |
pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582b
|
3944 3945 |
if (pntsd && acllen) { |
b2a3ad9ca
|
3946 3947 |
memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + data_offset, pntsd, acllen); |
be8e3b004
|
3948 |
inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582b
|
3949 |
} else |
be8e3b004
|
3950 |
inc_rfc1001_len(pSMB, byte_count); |
97837582b
|
3951 3952 3953 |
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
f96637be0
|
3954 3955 3956 |
cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d ", bytes_returned, rc); |
97837582b
|
3957 |
if (rc) |
f96637be0
|
3958 3959 |
cifs_dbg(FYI, "Set CIFS ACL returned %d ", rc); |
97837582b
|
3960 3961 3962 3963 3964 3965 3966 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto setCifsAclRetry; return (rc); } |
79df1baee
|
3967 |
#endif /* CONFIG_CIFS_ACL */ |
0a4b92c05
|
3968 |
|
6b8edfe0f
|
3969 3970 |
/* Legacy Query Path Information call for lookup to old servers such as Win9x/WinME */ |
68889f269
|
3971 3972 3973 3974 |
int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, const char *search_name, FILE_ALL_INFO *data, const struct nls_table *nls_codepage, int remap) |
6b8edfe0f
|
3975 |
{ |
ad7a2926b
|
3976 3977 |
QUERY_INFORMATION_REQ *pSMB; QUERY_INFORMATION_RSP *pSMBr; |
6b8edfe0f
|
3978 3979 3980 |
int rc = 0; int bytes_returned; int name_len; |
f96637be0
|
3981 3982 |
cifs_dbg(FYI, "In SMBQPath path %s ", search_name); |
6b8edfe0f
|
3983 3984 |
QInfRetry: rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, |
50c2f7538
|
3985 |
(void **) &pSMBr); |
6b8edfe0f
|
3986 3987 3988 3989 3990 |
if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
3991 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f269
|
3992 |
search_name, PATH_MAX, nls_codepage, |
acbbb76a2
|
3993 |
remap); |
6b8edfe0f
|
3994 3995 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
3996 |
} else { |
68889f269
|
3997 |
name_len = strnlen(search_name, PATH_MAX); |
6b8edfe0f
|
3998 |
name_len++; /* trailing null */ |
68889f269
|
3999 |
strncpy(pSMB->FileName, search_name, name_len); |
6b8edfe0f
|
4000 4001 |
} pSMB->BufferFormat = 0x04; |
50c2f7538
|
4002 |
name_len++; /* account for buffer type byte */ |
be8e3b004
|
4003 |
inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0f
|
4004 4005 4006 |
pSMB->ByteCount = cpu_to_le16(name_len); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
50c2f7538
|
4007 |
(struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0f
|
4008 |
if (rc) { |
f96637be0
|
4009 4010 |
cifs_dbg(FYI, "Send error in QueryInfo = %d ", rc); |
68889f269
|
4011 |
} else if (data) { |
1bd5bbcb6
|
4012 4013 |
struct timespec ts; __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926b
|
4014 4015 |
/* decode response */ |
1bd5bbcb6
|
4016 |
/* BB FIXME - add time zone adjustment BB */ |
68889f269
|
4017 |
memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb6
|
4018 4019 4020 |
ts.tv_nsec = 0; ts.tv_sec = time; /* decode time fields */ |
68889f269
|
4021 4022 4023 4024 |
data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); data->LastWriteTime = data->ChangeTime; data->LastAccessTime = 0; data->AllocationSize = |
70ca734a1
|
4025 |
cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f269
|
4026 4027 |
data->EndOfFile = data->AllocationSize; data->Attributes = |
70ca734a1
|
4028 |
cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0f
|
4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 |
} else rc = -EIO; /* bad buffer passed in */ cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QInfRetry; return rc; } |
bcd5357f4
|
4039 |
int |
6d5786a34
|
4040 |
CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f4
|
4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 |
u16 netfid, FILE_ALL_INFO *pFindData) { struct smb_t2_qfi_req *pSMB = NULL; struct smb_t2_qfi_rsp *pSMBr = NULL; int rc = 0; int bytes_returned; __u16 params, byte_count; QFileInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2 /* level */ + 2 /* fid */; pSMB->t2.TotalDataCount = 0; pSMB->t2.MaxParameterCount = cpu_to_le16(4); /* BB find exact max data count below from sess structure BB */ pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); pSMB->t2.MaxSetupCount = 0; pSMB->t2.Reserved = 0; pSMB->t2.Flags = 0; pSMB->t2.Timeout = 0; pSMB->t2.Reserved2 = 0; pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, Fid) - 4); pSMB->t2.DataCount = 0; pSMB->t2.DataOffset = 0; pSMB->t2.SetupCount = 1; pSMB->t2.Reserved3 = 0; pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->t2.TotalParameterCount = cpu_to_le16(params); pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); pSMB->Pad = 0; pSMB->Fid = netfid; |
be8e3b004
|
4078 |
inc_rfc1001_len(pSMB, byte_count); |
7ac0febb8
|
4079 |
pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0f
|
4080 |
|
bcd5357f4
|
4081 4082 4083 |
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
ebcc943c1
|
4084 |
cifs_dbg(FYI, "Send error in QFileInfo = %d", rc); |
bcd5357f4
|
4085 4086 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
6b8edfe0f
|
4087 |
|
bcd5357f4
|
4088 4089 |
if (rc) /* BB add auto retry on EOPNOTSUPP? */ rc = -EIO; |
820a803ff
|
4090 |
else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f4
|
4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 |
rc = -EIO; /* bad smb */ else if (pFindData) { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); memcpy((char *) pFindData, (char *) &pSMBr->hdr.Protocol + data_offset, sizeof(FILE_ALL_INFO)); } else rc = -ENOMEM; } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFileInfoRetry; |
6b8edfe0f
|
4103 |
|
bcd5357f4
|
4104 4105 |
return rc; } |
6b8edfe0f
|
4106 |
|
1da177e4c
|
4107 |
int |
6d5786a34
|
4108 |
CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f269
|
4109 |
const char *search_name, FILE_ALL_INFO *data, |
acf1a1b10
|
4110 |
int legacy /* old style infolevel */, |
737b758c9
|
4111 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
4112 |
{ |
68889f269
|
4113 |
/* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4c
|
4114 4115 4116 4117 4118 4119 |
TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; __u16 params, byte_count; |
f96637be0
|
4120 4121 |
/* cifs_dbg(FYI, "In QPathInfo path %s ", search_name); */ |
1da177e4c
|
4122 4123 4124 4125 4126 4127 4128 4129 |
QPathInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
68889f269
|
4130 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a2
|
4131 |
PATH_MAX, nls_codepage, remap); |
1da177e4c
|
4132 4133 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
4134 |
} else { /* BB improve the check for buffer overruns BB */ |
68889f269
|
4135 |
name_len = strnlen(search_name, PATH_MAX); |
1da177e4c
|
4136 |
name_len++; /* trailing null */ |
68889f269
|
4137 |
strncpy(pSMB->FileName, search_name, name_len); |
1da177e4c
|
4138 |
} |
50c2f7538
|
4139 |
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4c
|
4140 4141 |
pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
4142 4143 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4c
|
4144 4145 4146 4147 4148 4149 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
4150 |
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
4151 4152 4153 4154 4155 4156 4157 4158 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; |
790fe579f
|
4159 |
if (legacy) |
acf1a1b10
|
4160 4161 4162 |
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); else pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); |
1da177e4c
|
4163 |
pSMB->Reserved4 = 0; |
be8e3b004
|
4164 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4165 4166 4167 4168 4169 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
4170 4171 |
cifs_dbg(FYI, "Send error in QPathInfo = %d ", rc); |
1da177e4c
|
4172 4173 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
acf1a1b10
|
4174 4175 |
if (rc) /* BB add auto retry on EOPNOTSUPP? */ rc = -EIO; |
820a803ff
|
4176 |
else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4c
|
4177 |
rc = -EIO; /* bad smb */ |
820a803ff
|
4178 |
else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f7538
|
4179 4180 |
rc = -EIO; /* 24 or 26 expected but we do not read last field */ |
68889f269
|
4181 |
else if (data) { |
acf1a1b10
|
4182 |
int size; |
1da177e4c
|
4183 |
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926b
|
4184 |
|
68889f269
|
4185 4186 4187 4188 4189 4190 |
/* * On legacy responses we do not read the last field, * EAsize, fortunately since it varies by subdialect and * also note it differs on Set vs Get, ie two bytes or 4 * bytes depending but we don't care here. */ |
ad7a2926b
|
4191 |
if (legacy) |
acf1a1b10
|
4192 4193 4194 |
size = sizeof(FILE_INFO_STANDARD); else size = sizeof(FILE_ALL_INFO); |
68889f269
|
4195 |
memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b10
|
4196 |
data_offset, size); |
1da177e4c
|
4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 |
} else rc = -ENOMEM; } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QPathInfoRetry; return rc; } int |
6d5786a34
|
4208 |
CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd31
|
4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 |
u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) { struct smb_t2_qfi_req *pSMB = NULL; struct smb_t2_qfi_rsp *pSMBr = NULL; int rc = 0; int bytes_returned; __u16 params, byte_count; UnixQFileInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2 /* level */ + 2 /* fid */; pSMB->t2.TotalDataCount = 0; pSMB->t2.MaxParameterCount = cpu_to_le16(4); /* BB find exact max data count below from sess structure BB */ pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); pSMB->t2.MaxSetupCount = 0; pSMB->t2.Reserved = 0; pSMB->t2.Flags = 0; pSMB->t2.Timeout = 0; pSMB->t2.Reserved2 = 0; pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, Fid) - 4); pSMB->t2.DataCount = 0; pSMB->t2.DataOffset = 0; pSMB->t2.SetupCount = 1; pSMB->t2.Reserved3 = 0; pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->t2.TotalParameterCount = cpu_to_le16(params); pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); pSMB->Pad = 0; pSMB->Fid = netfid; |
be8e3b004
|
4246 |
inc_rfc1001_len(pSMB, byte_count); |
7ac0febb8
|
4247 |
pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd31
|
4248 4249 4250 4251 |
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
ebcc943c1
|
4252 |
cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc); |
c8634fd31
|
4253 4254 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
4255 |
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be0
|
4256 4257 |
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option. "); |
c8634fd31
|
4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 |
rc = -EIO; /* bad smb */ } else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); memcpy((char *) pFindData, (char *) &pSMBr->hdr.Protocol + data_offset, sizeof(FILE_UNIX_BASIC_INFO)); } } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto UnixQFileInfoRetry; return rc; } int |
6d5786a34
|
4276 |
CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4c
|
4277 |
const unsigned char *searchName, |
582d21e5e
|
4278 |
FILE_UNIX_BASIC_INFO *pFindData, |
737b758c9
|
4279 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
4280 4281 4282 4283 4284 4285 4286 4287 |
{ /* SMB_QUERY_FILE_UNIX_BASIC */ TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned = 0; int name_len; __u16 params, byte_count; |
f96637be0
|
4288 4289 |
cifs_dbg(FYI, "In QPathInfo (Unix) the path %s ", searchName); |
1da177e4c
|
4290 4291 4292 4293 4294 4295 4296 4297 |
UnixQPathInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
4298 4299 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
4300 4301 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
4302 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
4303 4304 4305 4306 |
name_len = strnlen(searchName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, searchName, name_len); } |
50c2f7538
|
4307 |
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4c
|
4308 4309 4310 |
pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find exact max SMB PDU from sess structure BB */ |
50c2f7538
|
4311 |
pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4c
|
4312 4313 4314 4315 4316 4317 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
4318 |
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); pSMB->Reserved4 = 0; |
be8e3b004
|
4329 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4330 4331 4332 4333 4334 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
ebcc943c1
|
4335 |
cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc); |
1da177e4c
|
4336 4337 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
4338 |
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be0
|
4339 4340 |
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option. "); |
1da177e4c
|
4341 4342 4343 4344 4345 4346 |
rc = -EIO; /* bad smb */ } else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); memcpy((char *) pFindData, (char *) &pSMBr->hdr.Protocol + data_offset, |
630f3f0c4
|
4347 |
sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4c
|
4348 4349 4350 4351 4352 4353 4354 4355 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto UnixQPathInfoRetry; return rc; } |
1da177e4c
|
4356 4357 |
/* xid, tcon, searchName and codepage are input parms, rest are returned */ int |
6d5786a34
|
4358 |
CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b42
|
4359 |
const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee74
|
4360 |
__u16 *pnetfid, __u16 search_flags, |
c052e2b42
|
4361 |
struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4c
|
4362 4363 4364 4365 |
{ /* level 257 SMB_ */ TRANSACTION2_FFIRST_REQ *pSMB = NULL; TRANSACTION2_FFIRST_RSP *pSMBr = NULL; |
ad7a2926b
|
4366 |
T2_FFIRST_RSP_PARMS *parms; |
1da177e4c
|
4367 4368 |
int rc = 0; int bytes_returned = 0; |
c052e2b42
|
4369 |
int name_len, remap; |
1da177e4c
|
4370 |
__u16 params, byte_count; |
c052e2b42
|
4371 |
struct nls_table *nls_codepage; |
1da177e4c
|
4372 |
|
f96637be0
|
4373 4374 |
cifs_dbg(FYI, "In FindFirst for %s ", searchName); |
1da177e4c
|
4375 4376 4377 4378 4379 4380 |
findFirstRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
c052e2b42
|
4381 |
nls_codepage = cifs_sb->local_nls; |
2baa26825
|
4382 |
remap = cifs_remap(cifs_sb); |
c052e2b42
|
4383 |
|
1da177e4c
|
4384 4385 |
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
4386 4387 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, PATH_MAX, nls_codepage, remap); |
737b758c9
|
4388 4389 4390 |
/* We can not add the asterik earlier in case it got remapped to 0xF03A as if it were part of the directory name instead of a wildcard */ |
1da177e4c
|
4391 |
name_len *= 2; |
c052e2b42
|
4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 |
if (msearch) { pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); pSMB->FileName[name_len+1] = 0; pSMB->FileName[name_len+2] = '*'; pSMB->FileName[name_len+3] = 0; name_len += 4; /* now the trailing null */ /* null terminate just in case */ pSMB->FileName[name_len] = 0; pSMB->FileName[name_len+1] = 0; name_len += 2; } |
1da177e4c
|
4403 4404 |
} else { /* BB add check for overrun of SMB buf BB */ name_len = strnlen(searchName, PATH_MAX); |
1da177e4c
|
4405 |
/* BB fix here and in unicode clause above ie |
790fe579f
|
4406 |
if (name_len > buffersize-header) |
1da177e4c
|
4407 4408 |
free buffer exit; BB */ strncpy(pSMB->FileName, searchName, name_len); |
c052e2b42
|
4409 4410 4411 4412 4413 4414 |
if (msearch) { pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); pSMB->FileName[name_len+1] = '*'; pSMB->FileName[name_len+2] = 0; name_len += 3; } |
1da177e4c
|
4415 4416 4417 4418 4419 |
} params = 12 + name_len /* includes null */ ; pSMB->TotalDataCount = 0; /* no EAs */ pSMB->MaxParameterCount = cpu_to_le16(10); |
c974befa4
|
4420 |
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4c
|
4421 4422 4423 4424 4425 4426 4427 4428 4429 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->ParameterOffset = cpu_to_le16( |
88274815f
|
4430 4431 |
offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4); |
1da177e4c
|
4432 4433 4434 4435 4436 4437 4438 4439 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); pSMB->SearchAttributes = cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); |
50c2f7538
|
4440 |
pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee74
|
4441 |
pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4c
|
4442 4443 4444 4445 |
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); /* BB what should we set StorageType to? Does it matter? BB */ pSMB->SearchStorageType = 0; |
be8e3b004
|
4446 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4447 4448 4449 4450 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
4451 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4c
|
4452 |
|
88274815f
|
4453 4454 |
if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */ |
1da177e4c
|
4455 |
/* BB Add code to handle unsupported level rc */ |
f96637be0
|
4456 4457 |
cifs_dbg(FYI, "Error in FindFirst = %d ", rc); |
1982c344f
|
4458 |
|
88274815f
|
4459 |
cifs_buf_release(pSMB); |
1da177e4c
|
4460 4461 4462 4463 4464 4465 4466 4467 |
/* BB eventually could optimize out free and realloc of buf */ /* for this case */ if (rc == -EAGAIN) goto findFirstRetry; } else { /* decode response */ /* BB remember to free buffer if error BB */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
790fe579f
|
4468 |
if (rc == 0) { |
b77d753c4
|
4469 |
unsigned int lnoff; |
1da177e4c
|
4470 |
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9c
|
4471 |
psrch_inf->unicode = true; |
1da177e4c
|
4472 |
else |
4b18f2a9c
|
4473 |
psrch_inf->unicode = false; |
1da177e4c
|
4474 4475 |
psrch_inf->ntwrk_buf_start = (char *)pSMBr; |
d47d7c1a8
|
4476 |
psrch_inf->smallBuf = 0; |
50c2f7538
|
4477 4478 |
psrch_inf->srch_entries_start = (char *) &pSMBr->hdr.Protocol + |
1da177e4c
|
4479 |
le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4c
|
4480 4481 |
parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + le16_to_cpu(pSMBr->t2.ParameterOffset)); |
790fe579f
|
4482 |
if (parms->EndofSearch) |
4b18f2a9c
|
4483 |
psrch_inf->endOfSearch = true; |
1da177e4c
|
4484 |
else |
4b18f2a9c
|
4485 |
psrch_inf->endOfSearch = false; |
1da177e4c
|
4486 |
|
50c2f7538
|
4487 4488 |
psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); |
60808233f
|
4489 |
psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4c
|
4490 |
psrch_inf->entries_in_buffer; |
b77d753c4
|
4491 |
lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa4
|
4492 |
if (CIFSMaxBufSize < lnoff) { |
f96637be0
|
4493 4494 |
cifs_dbg(VFS, "ignoring corrupt resume name "); |
b77d753c4
|
4495 4496 4497 |
psrch_inf->last_entry = NULL; return rc; } |
0752f1522
|
4498 |
psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c4
|
4499 |
lnoff; |
c052e2b42
|
4500 4501 |
if (pnetfid) *pnetfid = parms->SearchHandle; |
1da177e4c
|
4502 4503 4504 4505 4506 4507 4508 |
} else { cifs_buf_release(pSMB); } } return rc; } |
6d5786a34
|
4509 4510 4511 |
int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, __u16 searchHandle, __u16 search_flags, struct cifs_search_info *psrch_inf) |
1da177e4c
|
4512 4513 4514 |
{ TRANSACTION2_FNEXT_REQ *pSMB = NULL; TRANSACTION2_FNEXT_RSP *pSMBr = NULL; |
ad7a2926b
|
4515 |
T2_FNEXT_RSP_PARMS *parms; |
1da177e4c
|
4516 4517 |
char *response_data; int rc = 0; |
9438fabb7
|
4518 4519 |
int bytes_returned; unsigned int name_len; |
1da177e4c
|
4520 |
__u16 params, byte_count; |
f96637be0
|
4521 4522 |
cifs_dbg(FYI, "In FindNext "); |
1da177e4c
|
4523 |
|
4b18f2a9c
|
4524 |
if (psrch_inf->endOfSearch) |
1da177e4c
|
4525 4526 4527 4528 4529 4530 |
return -ENOENT; rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
50c2f7538
|
4531 |
params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4c
|
4532 4533 4534 |
byte_count = 0; pSMB->TotalDataCount = 0; /* no EAs */ pSMB->MaxParameterCount = cpu_to_le16(8); |
c974befa4
|
4535 |
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4c
|
4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16( offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); pSMB->SearchHandle = searchHandle; /* always kept as le */ pSMB->SearchCount = |
630f3f0c4
|
4550 |
cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4c
|
4551 4552 |
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); pSMB->ResumeKey = psrch_inf->resume_key; |
2608bee74
|
4553 |
pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4c
|
4554 4555 4556 |
name_len = psrch_inf->resume_name_len; params += name_len; |
790fe579f
|
4557 |
if (name_len < PATH_MAX) { |
1da177e4c
|
4558 4559 |
memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); byte_count += name_len; |
ef6724e32
|
4560 4561 4562 |
/* 14 byte parm len above enough for 2 byte null terminator */ pSMB->ResumeFileName[name_len] = 0; pSMB->ResumeFileName[name_len+1] = 0; |
1da177e4c
|
4563 4564 4565 4566 4567 4568 4569 |
} else { rc = -EINVAL; goto FNext2_err_exit; } byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; |
be8e3b004
|
4570 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4571 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f7538
|
4572 |
|
1da177e4c
|
4573 4574 |
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c581866
|
4575 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4c
|
4576 4577 |
if (rc) { if (rc == -EBADF) { |
4b18f2a9c
|
4578 |
psrch_inf->endOfSearch = true; |
6353450a2
|
4579 |
cifs_buf_release(pSMB); |
50c2f7538
|
4580 |
rc = 0; /* search probably was closed at end of search*/ |
1da177e4c
|
4581 |
} else |
f96637be0
|
4582 4583 |
cifs_dbg(FYI, "FindNext returned = %d ", rc); |
1da177e4c
|
4584 4585 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
50c2f7538
|
4586 |
|
790fe579f
|
4587 |
if (rc == 0) { |
b77d753c4
|
4588 |
unsigned int lnoff; |
1da177e4c
|
4589 4590 |
/* BB fixme add lock for file (srch_info) struct here */ if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9c
|
4591 |
psrch_inf->unicode = true; |
1da177e4c
|
4592 |
else |
4b18f2a9c
|
4593 |
psrch_inf->unicode = false; |
1da177e4c
|
4594 4595 4596 4597 4598 |
response_data = (char *) &pSMBr->hdr.Protocol + le16_to_cpu(pSMBr->t2.ParameterOffset); parms = (T2_FNEXT_RSP_PARMS *)response_data; response_data = (char *)&pSMBr->hdr.Protocol + le16_to_cpu(pSMBr->t2.DataOffset); |
790fe579f
|
4599 |
if (psrch_inf->smallBuf) |
d47d7c1a8
|
4600 4601 4602 4603 |
cifs_small_buf_release( psrch_inf->ntwrk_buf_start); else cifs_buf_release(psrch_inf->ntwrk_buf_start); |
1da177e4c
|
4604 4605 |
psrch_inf->srch_entries_start = response_data; psrch_inf->ntwrk_buf_start = (char *)pSMB; |
d47d7c1a8
|
4606 |
psrch_inf->smallBuf = 0; |
790fe579f
|
4607 |
if (parms->EndofSearch) |
4b18f2a9c
|
4608 |
psrch_inf->endOfSearch = true; |
1da177e4c
|
4609 |
else |
4b18f2a9c
|
4610 |
psrch_inf->endOfSearch = false; |
50c2f7538
|
4611 4612 |
psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount); |
1da177e4c
|
4613 4614 |
psrch_inf->index_of_last_entry += psrch_inf->entries_in_buffer; |
b77d753c4
|
4615 |
lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa4
|
4616 |
if (CIFSMaxBufSize < lnoff) { |
f96637be0
|
4617 4618 |
cifs_dbg(VFS, "ignoring corrupt resume name "); |
b77d753c4
|
4619 4620 4621 4622 4623 |
psrch_inf->last_entry = NULL; return rc; } else psrch_inf->last_entry = psrch_inf->srch_entries_start + lnoff; |
f96637be0
|
4624 4625 4626 |
/* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d ", psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ |
1da177e4c
|
4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 |
/* BB fixme add unlock here */ } } /* BB On error, should we leave previous search buf (and count and last entry fields) intact or free the previous one? */ /* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ FNext2_err_exit: if (rc != 0) cifs_buf_release(pSMB); |
1da177e4c
|
4641 4642 4643 4644 |
return rc; } int |
6d5786a34
|
4645 |
CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f7538
|
4646 |
const __u16 searchHandle) |
1da177e4c
|
4647 4648 4649 |
{ int rc = 0; FINDCLOSE_REQ *pSMB = NULL; |
1da177e4c
|
4650 |
|
f96637be0
|
4651 4652 |
cifs_dbg(FYI, "In CIFSSMBFindClose "); |
1da177e4c
|
4653 4654 4655 4656 |
rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); /* no sense returning error if session restarted as file handle has been closed */ |
790fe579f
|
4657 |
if (rc == -EAGAIN) |
1da177e4c
|
4658 4659 4660 |
return 0; if (rc) return rc; |
1da177e4c
|
4661 4662 |
pSMB->FileID = searchHandle; pSMB->ByteCount = 0; |
792af7b05
|
4663 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926b
|
4664 |
if (rc) |
f96637be0
|
4665 4666 |
cifs_dbg(VFS, "Send error in FindClose = %d ", rc); |
ad7a2926b
|
4667 |
|
44c581866
|
4668 |
cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4c
|
4669 4670 4671 4672 4673 4674 4675 |
/* Since session is dead, search handle closed on server already */ if (rc == -EAGAIN) rc = 0; return rc; } |
1da177e4c
|
4676 |
int |
6d5786a34
|
4677 |
CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f7
|
4678 |
const char *search_name, __u64 *inode_number, |
50c2f7538
|
4679 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
4680 4681 4682 4683 4684 4685 |
{ int rc = 0; TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int name_len, bytes_returned; __u16 params, byte_count; |
f96637be0
|
4686 4687 |
cifs_dbg(FYI, "In GetSrvInodeNum for %s ", search_name); |
790fe579f
|
4688 |
if (tcon == NULL) |
50c2f7538
|
4689 |
return -ENODEV; |
1da177e4c
|
4690 4691 4692 |
GetInodeNumberRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
50c2f7538
|
4693 |
(void **) &pSMBr); |
1da177e4c
|
4694 4695 |
if (rc) return rc; |
1da177e4c
|
4696 4697 |
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
4698 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f7
|
4699 |
search_name, PATH_MAX, nls_codepage, |
acbbb76a2
|
4700 |
remap); |
1da177e4c
|
4701 4702 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
4703 |
} else { /* BB improve the check for buffer overruns BB */ |
1208ef1f7
|
4704 |
name_len = strnlen(search_name, PATH_MAX); |
1da177e4c
|
4705 |
name_len++; /* trailing null */ |
1208ef1f7
|
4706 |
strncpy(pSMB->FileName, search_name, name_len); |
1da177e4c
|
4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 |
} params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find exact max data count below from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(4000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
4720 |
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); pSMB->Reserved4 = 0; |
be8e3b004
|
4731 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4732 4733 4734 4735 4736 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
4737 4738 |
cifs_dbg(FYI, "error %d in QueryInternalInfo ", rc); |
1da177e4c
|
4739 4740 4741 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4c
|
4742 |
/* BB also check enough total bytes returned */ |
820a803ff
|
4743 |
if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4c
|
4744 4745 4746 |
/* If rc should we check for EOPNOSUPP and disable the srvino flag? or in caller? */ rc = -EIO; /* bad smb */ |
50c2f7538
|
4747 |
else { |
1da177e4c
|
4748 4749 |
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); __u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
50c2f7538
|
4750 |
struct file_internal_info *pfinfo; |
1da177e4c
|
4751 |
/* BB Do we need a cast or hash here ? */ |
790fe579f
|
4752 |
if (count < 8) { |
f96637be0
|
4753 4754 |
cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf "); |
1da177e4c
|
4755 4756 4757 4758 4759 |
rc = -EIO; goto GetInodeNumOut; } pfinfo = (struct file_internal_info *) (data_offset + (char *) &pSMBr->hdr.Protocol); |
85a6dac54
|
4760 |
*inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4c
|
4761 4762 4763 4764 4765 4766 4767 4768 |
} } GetInodeNumOut: cifs_buf_release(pSMB); if (rc == -EAGAIN) goto GetInodeNumberRetry; return rc; } |
1da177e4c
|
4769 |
|
fec4585fd
|
4770 4771 4772 4773 4774 4775 4776 |
/* parses DFS refferal V3 structure * caller is responsible for freeing target_nodes * returns: * on success - 0 * on failure - errno */ static int |
a1fe78f16
|
4777 |
parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, |
fec4585fd
|
4778 4779 |
unsigned int *num_of_nodes, struct dfs_info3_param **target_nodes, |
2c55608f2
|
4780 4781 |
const struct nls_table *nls_codepage, int remap, const char *searchName) |
fec4585fd
|
4782 4783 4784 4785 4786 |
{ int i, rc = 0; char *data_end; bool is_unicode; struct dfs_referral_level_3 *ref; |
5ca33c6ac
|
4787 4788 4789 4790 |
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) is_unicode = true; else is_unicode = false; |
fec4585fd
|
4791 4792 4793 |
*num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals); if (*num_of_nodes < 1) { |
f96637be0
|
4794 4795 4796 |
cifs_dbg(VFS, "num_referrals: must be at least > 0, but we get num_referrals = %d ", *num_of_nodes); |
fec4585fd
|
4797 |
rc = -EINVAL; |
a1fe78f16
|
4798 |
goto parse_DFS_referrals_exit; |
fec4585fd
|
4799 4800 4801 |
} ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals); |
1d92cfd54
|
4802 |
if (ref->VersionNumber != cpu_to_le16(3)) { |
f96637be0
|
4803 4804 4805 |
cifs_dbg(VFS, "Referrals of V%d version are not supported, should be V3 ", le16_to_cpu(ref->VersionNumber)); |
fec4585fd
|
4806 |
rc = -EINVAL; |
a1fe78f16
|
4807 |
goto parse_DFS_referrals_exit; |
fec4585fd
|
4808 4809 4810 4811 4812 |
} /* get the upper boundary of the resp buffer */ data_end = (char *)(&(pSMBr->PathConsumed)) + le16_to_cpu(pSMBr->t2.DataCount); |
f96637be0
|
4813 4814 4815 |
cifs_dbg(FYI, "num_referrals: %d dfs flags: 0x%x ... ", *num_of_nodes, le32_to_cpu(pSMBr->DFSFlags)); |
fec4585fd
|
4816 |
|
f96637be0
|
4817 4818 |
*target_nodes = kcalloc(*num_of_nodes, sizeof(struct dfs_info3_param), GFP_KERNEL); |
fec4585fd
|
4819 |
if (*target_nodes == NULL) { |
fec4585fd
|
4820 |
rc = -ENOMEM; |
a1fe78f16
|
4821 |
goto parse_DFS_referrals_exit; |
fec4585fd
|
4822 |
} |
3ad2f3fbb
|
4823 |
/* collect necessary data from referrals */ |
fec4585fd
|
4824 4825 4826 4827 |
for (i = 0; i < *num_of_nodes; i++) { char *temp; int max_len; struct dfs_info3_param *node = (*target_nodes)+i; |
0e0d2cf32
|
4828 |
node->flags = le32_to_cpu(pSMBr->DFSFlags); |
2c55608f2
|
4829 |
if (is_unicode) { |
331c31351
|
4830 4831 |
__le16 *tmp = kmalloc(strlen(searchName)*2 + 2, GFP_KERNEL); |
2920ee2b4
|
4832 4833 4834 4835 |
if (tmp == NULL) { rc = -ENOMEM; goto parse_DFS_referrals_exit; } |
acbbb76a2
|
4836 4837 4838 |
cifsConvertToUTF16((__le16 *) tmp, searchName, PATH_MAX, nls_codepage, remap); node->path_consumed = cifs_utf16_bytes(tmp, |
69f801fca
|
4839 |
le16_to_cpu(pSMBr->PathConsumed), |
2c55608f2
|
4840 4841 4842 4843 |
nls_codepage); kfree(tmp); } else node->path_consumed = le16_to_cpu(pSMBr->PathConsumed); |
fec4585fd
|
4844 4845 4846 4847 4848 4849 |
node->server_type = le16_to_cpu(ref->ServerType); node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags); /* copy DfsPath */ temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset); max_len = data_end - temp; |
acbbb76a2
|
4850 4851 |
node->path_name = cifs_strndup_from_utf16(temp, max_len, is_unicode, nls_codepage); |
d8e2f53ac
|
4852 4853 |
if (!node->path_name) { rc = -ENOMEM; |
a1fe78f16
|
4854 |
goto parse_DFS_referrals_exit; |
066ce6899
|
4855 |
} |
fec4585fd
|
4856 4857 4858 4859 |
/* copy link target UNC */ temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset); max_len = data_end - temp; |
acbbb76a2
|
4860 4861 |
node->node_name = cifs_strndup_from_utf16(temp, max_len, is_unicode, nls_codepage); |
d8f2799b1
|
4862 |
if (!node->node_name) { |
d8e2f53ac
|
4863 |
rc = -ENOMEM; |
d8f2799b1
|
4864 4865 4866 4867 |
goto parse_DFS_referrals_exit; } ref++; |
fec4585fd
|
4868 |
} |
a1fe78f16
|
4869 |
parse_DFS_referrals_exit: |
fec4585fd
|
4870 4871 4872 4873 4874 4875 4876 |
if (rc) { free_dfs_info_array(*target_nodes, *num_of_nodes); *target_nodes = NULL; *num_of_nodes = 0; } return rc; } |
1da177e4c
|
4877 |
int |
6d5786a34
|
4878 |
CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33ca
|
4879 |
const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d59
|
4880 |
unsigned int *num_of_nodes, |
737b758c9
|
4881 |
const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
4882 4883 4884 4885 |
{ /* TRANS2_GET_DFS_REFERRAL */ TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; |
1da177e4c
|
4886 4887 4888 |
int rc = 0; int bytes_returned; int name_len; |
1da177e4c
|
4889 |
__u16 params, byte_count; |
c2cf07d59
|
4890 4891 |
*num_of_nodes = 0; *target_nodes = NULL; |
1da177e4c
|
4892 |
|
f96637be0
|
4893 4894 |
cifs_dbg(FYI, "In GetDFSRefer the path %s ", search_name); |
1da177e4c
|
4895 4896 4897 4898 4899 4900 4901 |
if (ses == NULL) return -ENODEV; getDFSRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
50c2f7538
|
4902 4903 |
/* server pointer checked in called function, |
1982c344f
|
4904 |
but should never be null here anyway */ |
882573606
|
4905 |
pSMB->hdr.Mid = get_next_mid(ses->server); |
1da177e4c
|
4906 4907 |
pSMB->hdr.Tid = ses->ipc_tid; pSMB->hdr.Uid = ses->Suid; |
26f57364d
|
4908 |
if (ses->capabilities & CAP_STATUS32) |
1da177e4c
|
4909 |
pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364d
|
4910 |
if (ses->capabilities & CAP_DFS) |
1da177e4c
|
4911 |
pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4c
|
4912 4913 4914 4915 |
if (ses->capabilities & CAP_UNICODE) { pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; name_len = |
acbbb76a2
|
4916 |
cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33ca
|
4917 |
search_name, PATH_MAX, nls_codepage, |
acbbb76a2
|
4918 |
remap); |
1da177e4c
|
4919 4920 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
4921 |
} else { /* BB improve the check for buffer overruns BB */ |
b669f33ca
|
4922 |
name_len = strnlen(search_name, PATH_MAX); |
1da177e4c
|
4923 |
name_len++; /* trailing null */ |
b669f33ca
|
4924 |
strncpy(pSMB->RequestFileName, search_name, name_len); |
1da177e4c
|
4925 |
} |
65c3b205e
|
4926 |
if (ses->server->sign) |
38d77c50b
|
4927 |
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a04
|
4928 |
|
50c2f7538
|
4929 |
pSMB->hdr.Uid = ses->Suid; |
1a4e15a04
|
4930 |
|
1da177e4c
|
4931 4932 4933 4934 4935 |
params = 2 /* level */ + name_len /*includes null */ ; pSMB->TotalDataCount = 0; pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = 0; |
582d21e5e
|
4936 4937 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4c
|
4938 4939 4940 4941 4942 4943 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
4944 |
struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4c
|
4945 4946 4947 4948 4949 4950 4951 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); byte_count = params + 3 /* pad */ ; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->MaxReferralLevel = cpu_to_le16(3); |
be8e3b004
|
4952 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
4953 4954 4955 4956 4957 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
4958 4959 |
cifs_dbg(FYI, "Send error in GetDFSRefer = %d ", rc); |
c2cf07d59
|
4960 4961 4962 |
goto GetDFSRefExit; } rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4c
|
4963 |
|
c2cf07d59
|
4964 |
/* BB Also check if enough total bytes returned? */ |
820a803ff
|
4965 |
if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d59
|
4966 |
rc = -EIO; /* bad smb */ |
fec4585fd
|
4967 4968 |
goto GetDFSRefExit; } |
c2cf07d59
|
4969 |
|
f96637be0
|
4970 4971 4972 |
cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d ", get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); |
1da177e4c
|
4973 |
|
fec4585fd
|
4974 |
/* parse returned result into more usable form */ |
a1fe78f16
|
4975 |
rc = parse_DFS_referrals(pSMBr, num_of_nodes, |
2c55608f2
|
4976 |
target_nodes, nls_codepage, remap, |
b669f33ca
|
4977 |
search_name); |
c2cf07d59
|
4978 |
|
1da177e4c
|
4979 |
GetDFSRefExit: |
0d817bc0d
|
4980 |
cifs_buf_release(pSMB); |
1da177e4c
|
4981 4982 4983 4984 4985 4986 |
if (rc == -EAGAIN) goto getDFSRetry; return rc; } |
209624388
|
4987 4988 |
/* Query File System Info such as free space to old servers such as Win 9x */ int |
6d5786a34
|
4989 4990 |
SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
209624388
|
4991 4992 4993 4994 4995 4996 4997 4998 |
{ /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_ALLOC_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
4999 5000 |
cifs_dbg(FYI, "OldQFSInfo "); |
209624388
|
5001 5002 5003 5004 5005 |
oldQFSInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; |
209624388
|
5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 |
params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->ParameterOffset = cpu_to_le16(offsetof( struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); |
be8e3b004
|
5027 |
inc_rfc1001_len(pSMB, byte_count); |
209624388
|
5028 5029 5030 5031 5032 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5033 5034 |
cifs_dbg(FYI, "Send error in QFSInfo = %d ", rc); |
209624388
|
5035 5036 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
5037 |
if (rc || get_bcc(&pSMBr->hdr) < 18) |
209624388
|
5038 5039 5040 |
rc = -EIO; /* bad smb */ else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
f96637be0
|
5041 5042 |
cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d ", |
820a803ff
|
5043 |
get_bcc(&pSMBr->hdr), data_offset); |
209624388
|
5044 |
|
50c2f7538
|
5045 |
response_data = (FILE_SYSTEM_ALLOC_INFO *) |
209624388
|
5046 5047 5048 5049 5050 5051 |
(((char *) &pSMBr->hdr.Protocol) + data_offset); FSData->f_bsize = le16_to_cpu(response_data->BytesPerSector) * le32_to_cpu(response_data-> SectorsPerAllocationUnit); FSData->f_blocks = |
50c2f7538
|
5052 |
le32_to_cpu(response_data->TotalAllocationUnits); |
209624388
|
5053 5054 |
FSData->f_bfree = FSData->f_bavail = le32_to_cpu(response_data->FreeAllocationUnits); |
f96637be0
|
5055 5056 5057 5058 5059 |
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld ", (unsigned long long)FSData->f_blocks, (unsigned long long)FSData->f_bfree, FSData->f_bsize); |
209624388
|
5060 5061 5062 5063 5064 5065 5066 5067 5068 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto oldQFSInfoRetry; return rc; } |
1da177e4c
|
5069 |
int |
6d5786a34
|
5070 5071 |
CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, struct kstatfs *FSData) |
1da177e4c
|
5072 5073 5074 5075 5076 5077 5078 5079 |
{ /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
5080 5081 |
cifs_dbg(FYI, "In QFSInfo "); |
1da177e4c
|
5082 5083 5084 5085 5086 5087 5088 5089 5090 |
QFSInfoRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
209624388
|
5091 |
pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5092 5093 5094 5095 5096 5097 5098 5099 5100 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
5101 |
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4c
|
5102 5103 5104 5105 5106 5107 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); |
be8e3b004
|
5108 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5109 5110 5111 5112 5113 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5114 5115 |
cifs_dbg(FYI, "Send error in QFSInfo = %d ", rc); |
1da177e4c
|
5116 |
} else { /* decode response */ |
50c2f7538
|
5117 |
rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4c
|
5118 |
|
820a803ff
|
5119 |
if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4c
|
5120 5121 5122 |
rc = -EIO; /* bad smb */ else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4c
|
5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 |
response_data = (FILE_SYSTEM_INFO *) (((char *) &pSMBr->hdr.Protocol) + data_offset); FSData->f_bsize = le32_to_cpu(response_data->BytesPerSector) * le32_to_cpu(response_data-> SectorsPerAllocationUnit); FSData->f_blocks = le64_to_cpu(response_data->TotalAllocationUnits); FSData->f_bfree = FSData->f_bavail = le64_to_cpu(response_data->FreeAllocationUnits); |
f96637be0
|
5136 5137 5138 5139 5140 |
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld ", (unsigned long long)FSData->f_blocks, (unsigned long long)FSData->f_bfree, FSData->f_bsize); |
1da177e4c
|
5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFSInfoRetry; return rc; } int |
6d5786a34
|
5152 |
CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4c
|
5153 5154 5155 5156 5157 5158 5159 5160 |
{ /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_ATTRIBUTE_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
5161 5162 |
cifs_dbg(FYI, "In QFSAttributeInfo "); |
1da177e4c
|
5163 5164 5165 5166 5167 5168 5169 5170 5171 |
QFSAttributeRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5172 5173 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5174 5175 5176 5177 5178 5179 5180 5181 5182 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
5183 |
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4c
|
5184 5185 5186 5187 5188 5189 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); |
be8e3b004
|
5190 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5191 5192 5193 5194 5195 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5196 5197 |
cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d ", rc); |
1da177e4c
|
5198 5199 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
5200 |
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f7538
|
5201 |
/* BB also check if enough bytes returned */ |
1da177e4c
|
5202 5203 5204 5205 5206 5207 5208 5209 |
rc = -EIO; /* bad smb */ } else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); response_data = (FILE_SYSTEM_ATTRIBUTE_INFO *) (((char *) &pSMBr->hdr.Protocol) + data_offset); memcpy(&tcon->fsAttrInfo, response_data, |
26f57364d
|
5210 |
sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4c
|
5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFSAttributeRetry; return rc; } int |
6d5786a34
|
5222 |
CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4c
|
5223 5224 5225 5226 5227 5228 5229 5230 |
{ /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_DEVICE_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
5231 5232 |
cifs_dbg(FYI, "In QFSDeviceInfo "); |
1da177e4c
|
5233 5234 5235 5236 5237 5238 5239 5240 5241 |
QFSDeviceRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5242 5243 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5244 5245 5246 5247 5248 5249 5250 5251 5252 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
5253 |
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4c
|
5254 5255 5256 5257 5258 5259 5260 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); |
be8e3b004
|
5261 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5262 5263 5264 5265 5266 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5267 5268 |
cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d ", rc); |
1da177e4c
|
5269 5270 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
5271 5272 |
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_SYSTEM_DEVICE_INFO)) |
1da177e4c
|
5273 5274 5275 5276 |
rc = -EIO; /* bad smb */ else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); response_data = |
737b758c9
|
5277 5278 |
(FILE_SYSTEM_DEVICE_INFO *) (((char *) &pSMBr->hdr.Protocol) + |
1da177e4c
|
5279 5280 |
data_offset); memcpy(&tcon->fsDevInfo, response_data, |
26f57364d
|
5281 |
sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4c
|
5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFSDeviceRetry; return rc; } int |
6d5786a34
|
5293 |
CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4c
|
5294 5295 5296 5297 5298 5299 5300 5301 |
{ /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_UNIX_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
5302 5303 |
cifs_dbg(FYI, "In QFSUnixInfo "); |
1da177e4c
|
5304 |
QFSUnixRetry: |
f569599ae
|
5305 5306 |
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); |
1da177e4c
|
5307 5308 5309 5310 5311 5312 5313 5314 |
if (rc) return rc; params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5315 5316 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(100); |
1da177e4c
|
5317 5318 5319 5320 5321 5322 5323 5324 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; |
50c2f7538
|
5325 5326 |
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4c
|
5327 5328 5329 5330 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); |
be8e3b004
|
5331 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5332 5333 5334 5335 5336 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5337 5338 |
cifs_dbg(VFS, "Send error in QFSUnixInfo = %d ", rc); |
1da177e4c
|
5339 5340 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
5341 |
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4c
|
5342 5343 5344 5345 5346 5347 5348 5349 |
rc = -EIO; /* bad smb */ } else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); response_data = (FILE_SYSTEM_UNIX_INFO *) (((char *) &pSMBr->hdr.Protocol) + data_offset); memcpy(&tcon->fsUnixInfo, response_data, |
26f57364d
|
5350 |
sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4c
|
5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFSUnixRetry; return rc; } |
ac67055ef
|
5361 |
int |
6d5786a34
|
5362 |
CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055ef
|
5363 5364 5365 5366 5367 5368 5369 |
{ /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ TRANSACTION2_SETFSI_REQ *pSMB = NULL; TRANSACTION2_SETFSI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned = 0; __u16 params, param_offset, offset, byte_count; |
f96637be0
|
5370 5371 |
cifs_dbg(FYI, "In SETFSUnixInfo "); |
ac67055ef
|
5372 |
SETFSUnixRetry: |
f26282c9a
|
5373 |
/* BB switch to small buf init to save memory */ |
f569599ae
|
5374 5375 |
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); |
ac67055ef
|
5376 5377 5378 5379 5380 5381 5382 5383 5384 |
if (rc) return rc; params = 4; /* 2 bytes zero followed by info level. */ pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; |
50c2f7538
|
5385 5386 |
param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4; |
ac67055ef
|
5387 5388 5389 |
offset = param_offset + params; pSMB->MaxParameterCount = cpu_to_le16(4); |
582d21e5e
|
5390 5391 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(100); |
ac67055ef
|
5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); byte_count = 1 /* pad */ + params + 12; pSMB->DataCount = cpu_to_le16(12); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); /* Params. */ pSMB->FileNum = 0; pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); /* Data. */ pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); pSMB->ClientUnixCap = cpu_to_le64(cap); |
be8e3b004
|
5412 |
inc_rfc1001_len(pSMB, byte_count); |
ac67055ef
|
5413 5414 5415 5416 5417 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5418 5419 |
cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d ", rc); |
ac67055ef
|
5420 5421 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
ad7a2926b
|
5422 |
if (rc) |
ac67055ef
|
5423 |
rc = -EIO; /* bad smb */ |
ac67055ef
|
5424 5425 5426 5427 5428 5429 5430 5431 |
} cifs_buf_release(pSMB); if (rc == -EAGAIN) goto SETFSUnixRetry; return rc; } |
1da177e4c
|
5432 5433 |
int |
6d5786a34
|
5434 |
CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c9
|
5435 |
struct kstatfs *FSData) |
1da177e4c
|
5436 5437 5438 5439 5440 5441 5442 5443 |
{ /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ TRANSACTION2_QFSI_REQ *pSMB = NULL; TRANSACTION2_QFSI_RSP *pSMBr = NULL; FILE_SYSTEM_POSIX_INFO *response_data; int rc = 0; int bytes_returned = 0; __u16 params, byte_count; |
f96637be0
|
5444 5445 |
cifs_dbg(FYI, "In QFSPosixInfo "); |
1da177e4c
|
5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 |
QFSPosixRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; params = 2; /* level */ pSMB->TotalDataCount = 0; pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5457 5458 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(100); |
1da177e4c
|
5459 5460 5461 5462 5463 5464 5465 5466 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; byte_count = params + 1 /* pad */ ; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; |
50c2f7538
|
5467 5468 |
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4c
|
5469 5470 5471 5472 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); |
be8e3b004
|
5473 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5474 5475 5476 5477 5478 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
5479 5480 |
cifs_dbg(FYI, "Send error in QFSUnixInfo = %d ", rc); |
1da177e4c
|
5481 5482 |
} else { /* decode response */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
5483 |
if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4c
|
5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 |
rc = -EIO; /* bad smb */ } else { __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); response_data = (FILE_SYSTEM_POSIX_INFO *) (((char *) &pSMBr->hdr.Protocol) + data_offset); FSData->f_bsize = le32_to_cpu(response_data->BlockSize); FSData->f_blocks = le64_to_cpu(response_data->TotalBlocks); FSData->f_bfree = le64_to_cpu(response_data->BlocksAvail); |
790fe579f
|
5497 |
if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4c
|
5498 5499 5500 |
FSData->f_bavail = FSData->f_bfree; } else { FSData->f_bavail = |
50c2f7538
|
5501 |
le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4c
|
5502 |
} |
790fe579f
|
5503 |
if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4c
|
5504 |
FSData->f_files = |
50c2f7538
|
5505 |
le64_to_cpu(response_data->TotalFileNodes); |
790fe579f
|
5506 |
if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4c
|
5507 |
FSData->f_ffree = |
50c2f7538
|
5508 |
le64_to_cpu(response_data->FreeFileNodes); |
1da177e4c
|
5509 5510 5511 5512 5513 5514 5515 5516 5517 |
} } cifs_buf_release(pSMB); if (rc == -EAGAIN) goto QFSPosixRetry; return rc; } |
d14334181
|
5518 5519 5520 5521 5522 5523 |
/* * We can not use write of zero bytes trick to set file size due to need for * large file support. Also note that this SetPathInfo is preferred to * SetFileInfo based method in next routine which is only needed to work around * a sharing violation bugin Samba which this routine can run into. */ |
1da177e4c
|
5524 |
int |
6d5786a34
|
5525 |
CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d14334181
|
5526 5527 |
const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, bool set_allocation) |
1da177e4c
|
5528 5529 5530 5531 5532 5533 5534 |
{ struct smb_com_transaction2_spi_req *pSMB = NULL; struct smb_com_transaction2_spi_rsp *pSMBr = NULL; struct file_end_of_file_info *parm_data; int name_len; int rc = 0; int bytes_returned = 0; |
2baa26825
|
5535 |
int remap = cifs_remap(cifs_sb); |
d14334181
|
5536 |
|
1da177e4c
|
5537 |
__u16 params, byte_count, data_count, param_offset, offset; |
f96637be0
|
5538 5539 |
cifs_dbg(FYI, "In SetEOF "); |
1da177e4c
|
5540 5541 5542 5543 5544 5545 5546 5547 |
SetEOFRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
d14334181
|
5548 5549 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, PATH_MAX, cifs_sb->local_nls, remap); |
1da177e4c
|
5550 5551 |
name_len++; /* trailing null */ name_len *= 2; |
3e87d8039
|
5552 |
} else { /* BB improve the check for buffer overruns BB */ |
d14334181
|
5553 |
name_len = strnlen(file_name, PATH_MAX); |
1da177e4c
|
5554 |
name_len++; /* trailing null */ |
d14334181
|
5555 |
strncpy(pSMB->FileName, file_name, name_len); |
1da177e4c
|
5556 5557 |
} params = 6 + name_len; |
26f57364d
|
5558 |
data_count = sizeof(struct file_end_of_file_info); |
1da177e4c
|
5559 |
pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d8039
|
5560 |
pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4c
|
5561 5562 5563 5564 5565 5566 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
5567 |
InformationLevel) - 4; |
1da177e4c
|
5568 |
offset = param_offset + params; |
d14334181
|
5569 |
if (set_allocation) { |
50c2f7538
|
5570 5571 5572 5573 5574 5575 5576 |
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); else pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); } else /* Set File Size */ { |
1da177e4c
|
5577 5578 |
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = |
50c2f7538
|
5579 |
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4c
|
5580 5581 |
else pSMB->InformationLevel = |
50c2f7538
|
5582 |
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4c
|
5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 |
} parm_data = (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + offset); pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + data_count; pSMB->DataCount = cpu_to_le16(data_count); pSMB->TotalDataCount = pSMB->DataCount; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->Reserved4 = 0; |
be8e3b004
|
5599 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5600 5601 5602 5603 |
parm_data->FileSize = cpu_to_le64(size); pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
5604 |
if (rc) |
f96637be0
|
5605 5606 |
cifs_dbg(FYI, "SetPathInfo (file size) returned %d ", rc); |
1da177e4c
|
5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto SetEOFRetry; return rc; } int |
d14334181
|
5617 5618 |
CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, struct cifsFileInfo *cfile, __u64 size, bool set_allocation) |
1da177e4c
|
5619 5620 |
{ struct smb_com_transaction2_sfi_req *pSMB = NULL; |
1da177e4c
|
5621 5622 |
struct file_end_of_file_info *parm_data; int rc = 0; |
1da177e4c
|
5623 |
__u16 params, param_offset, offset, byte_count, count; |
f96637be0
|
5624 5625 5626 |
cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld ", (long long)size); |
cd63499cb
|
5627 |
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1da177e4c
|
5628 5629 |
if (rc) return rc; |
d14334181
|
5630 5631 |
pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); |
50c2f7538
|
5632 |
|
1da177e4c
|
5633 5634 5635 5636 5637 5638 5639 5640 |
params = 6; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; |
1da177e4c
|
5641 5642 |
count = sizeof(struct file_end_of_file_info); pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5643 5644 |
/* BB find exact max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); parm_data = |
50c2f7538
|
5655 5656 |
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + offset); |
1da177e4c
|
5657 5658 |
pSMB->DataOffset = cpu_to_le16(offset); parm_data->FileSize = cpu_to_le64(size); |
d14334181
|
5659 5660 |
pSMB->Fid = cfile->fid.netfid; if (set_allocation) { |
1da177e4c
|
5661 5662 5663 5664 5665 5666 |
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); else pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); |
50c2f7538
|
5667 |
} else /* Set File Size */ { |
1da177e4c
|
5668 5669 |
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = |
50c2f7538
|
5670 |
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4c
|
5671 5672 |
else pSMB->InformationLevel = |
50c2f7538
|
5673 |
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4c
|
5674 5675 |
} pSMB->Reserved4 = 0; |
be8e3b004
|
5676 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5677 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b05
|
5678 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
1da177e4c
|
5679 |
if (rc) { |
f96637be0
|
5680 5681 5682 |
cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d ", rc); |
1da177e4c
|
5683 |
} |
50c2f7538
|
5684 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
5685 5686 5687 5688 |
since file handle passed in no longer valid */ return rc; } |
50c2f7538
|
5689 |
/* Some legacy servers such as NT4 require that the file times be set on |
1da177e4c
|
5690 5691 5692 5693 5694 5695 |
an open handle, rather than by pathname - this is awkward due to potential access conflicts on the open, but it is unavoidable for these old servers since the only other choice is to go from 100 nanosecond DCE time and resort to the original setpathinfo level which takes the ancient DOS time format with 2 second granularity */ int |
6d5786a34
|
5696 |
CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa06
|
5697 |
const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4c
|
5698 5699 |
{ struct smb_com_transaction2_sfi_req *pSMB = NULL; |
1da177e4c
|
5700 5701 |
char *data_offset; int rc = 0; |
1da177e4c
|
5702 |
__u16 params, param_offset, offset, byte_count, count; |
f96637be0
|
5703 5704 |
cifs_dbg(FYI, "Set Times (via SetFileInfo) "); |
cd63499cb
|
5705 |
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1da177e4c
|
5706 5707 |
if (rc) return rc; |
2dd2dfa06
|
5708 5709 |
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); |
50c2f7538
|
5710 |
|
1da177e4c
|
5711 5712 5713 5714 5715 5716 5717 5718 |
params = 6; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; |
b2a3ad9ca
|
5719 5720 |
data_offset = (char *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4c
|
5721 |
|
26f57364d
|
5722 |
count = sizeof(FILE_BASIC_INFO); |
1da177e4c
|
5723 |
pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5724 5725 |
/* BB find max SMB PDU from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 |
pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->Fid = fid; if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); else pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); pSMB->Reserved4 = 0; |
be8e3b004
|
5742 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
5743 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f7538
|
5744 |
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b05
|
5745 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
ad7a2926b
|
5746 |
if (rc) |
f96637be0
|
5747 5748 5749 |
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d ", rc); |
1da177e4c
|
5750 |
|
50c2f7538
|
5751 |
/* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4c
|
5752 5753 5754 5755 |
since file handle passed in no longer valid */ return rc; } |
6d22f0989
|
5756 |
int |
6d5786a34
|
5757 |
CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f0989
|
5758 5759 5760 5761 5762 5763 |
bool delete_file, __u16 fid, __u32 pid_of_opener) { struct smb_com_transaction2_sfi_req *pSMB = NULL; char *data_offset; int rc = 0; __u16 params, param_offset, offset, byte_count, count; |
f96637be0
|
5764 5765 |
cifs_dbg(FYI, "Set File Disposition (via SetFileInfo) "); |
6d22f0989
|
5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 |
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); if (rc) return rc; pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); params = 6; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; data_offset = (char *) (&pSMB->hdr.Protocol) + offset; count = 1; pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find max SMB PDU from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->Fid = fid; pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); pSMB->Reserved4 = 0; |
be8e3b004
|
5802 |
inc_rfc1001_len(pSMB, byte_count); |
6d22f0989
|
5803 5804 |
pSMB->ByteCount = cpu_to_le16(byte_count); *data_offset = delete_file ? 1 : 0; |
792af7b05
|
5805 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
6d22f0989
|
5806 |
if (rc) |
f96637be0
|
5807 5808 |
cifs_dbg(FYI, "Send error in SetFileDisposition = %d ", rc); |
6d22f0989
|
5809 5810 5811 |
return rc; } |
1da177e4c
|
5812 5813 |
int |
6d5786a34
|
5814 |
CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e51
|
5815 5816 |
const char *fileName, const FILE_BASIC_INFO *data, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
5817 5818 5819 5820 5821 5822 5823 5824 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; int name_len; int rc = 0; int bytes_returned = 0; char *data_offset; __u16 params, param_offset, offset, byte_count, count; |
f96637be0
|
5825 5826 |
cifs_dbg(FYI, "In SetTimes "); |
1da177e4c
|
5827 5828 5829 5830 5831 5832 5833 5834 5835 |
SetTimesRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
5836 5837 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
5838 5839 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
5840 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
5841 5842 5843 5844 5845 5846 |
name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, fileName, name_len); } params = 6 + name_len; |
26f57364d
|
5847 |
count = sizeof(FILE_BASIC_INFO); |
1da177e4c
|
5848 |
pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
5849 5850 |
/* BB find max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
5851 5852 5853 5854 5855 5856 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
5857 |
InformationLevel) - 4; |
1da177e4c
|
5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 |
offset = param_offset + params; data_offset = (char *) (&pSMB->hdr.Protocol) + offset; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); else pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); pSMB->Reserved4 = 0; |
be8e3b004
|
5876 |
inc_rfc1001_len(pSMB, byte_count); |
26f57364d
|
5877 |
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4c
|
5878 5879 5880 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
5881 |
if (rc) |
f96637be0
|
5882 5883 |
cifs_dbg(FYI, "SetPathInfo (times) returned %d ", rc); |
1da177e4c
|
5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto SetTimesRetry; return rc; } /* Can not be used to set time stamps yet (due to old DOS time format) */ /* Can be used to set attributes */ #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug handling it anyway and NT4 was what we thought it would be needed for Do not delete it until we prove whether needed for Win9x though */ int |
6d5786a34
|
5899 |
CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName, |
1da177e4c
|
5900 5901 5902 5903 5904 5905 5906 |
__u16 dos_attrs, const struct nls_table *nls_codepage) { SETATTR_REQ *pSMB = NULL; SETATTR_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; int name_len; |
f96637be0
|
5907 5908 |
cifs_dbg(FYI, "In SetAttrLegacy "); |
1da177e4c
|
5909 5910 5911 5912 5913 5914 5915 5916 5917 |
SetAttrLgcyRetry: rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
5918 5919 |
ConvertToUTF16((__le16 *) pSMB->fileName, fileName, PATH_MAX, nls_codepage); |
1da177e4c
|
5920 5921 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
5922 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
5923 5924 5925 5926 5927 5928 |
name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->fileName, fileName, name_len); } pSMB->attr = cpu_to_le16(dos_attrs); pSMB->BufferFormat = 0x04; |
be8e3b004
|
5929 |
inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4c
|
5930 5931 5932 |
pSMB->ByteCount = cpu_to_le16(name_len + 1); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
5933 |
if (rc) |
f96637be0
|
5934 5935 |
cifs_dbg(FYI, "Error in LegacySetAttr = %d ", rc); |
1da177e4c
|
5936 5937 5938 5939 5940 5941 5942 5943 5944 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto SetAttrLgcyRetry; return rc; } #endif /* temporarily unneeded SetAttr legacy function */ |
654cf14ac
|
5945 5946 5947 5948 |
static void cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, const struct cifs_unix_set_info_args *args) { |
49418b2c2
|
5949 |
u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14ac
|
5950 |
u64 mode = args->mode; |
49418b2c2
|
5951 5952 5953 5954 |
if (uid_valid(args->uid)) uid = from_kuid(&init_user_ns, args->uid); if (gid_valid(args->gid)) gid = from_kgid(&init_user_ns, args->gid); |
654cf14ac
|
5955 5956 5957 5958 |
/* * Samba server ignores set of file size to zero due to bugs in some * older clients, but we should be precise - we use SetFileSize to * set file size and do not want to truncate file size to zero |
25985edce
|
5959 |
* accidentally as happened on one Samba server beta by putting |
654cf14ac
|
5960 5961 5962 5963 5964 5965 5966 |
* zero instead of -1 here */ data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); data_offset->LastStatusChange = cpu_to_le64(args->ctime); data_offset->LastAccessTime = cpu_to_le64(args->atime); data_offset->LastModificationTime = cpu_to_le64(args->mtime); |
49418b2c2
|
5967 5968 |
data_offset->Uid = cpu_to_le64(uid); data_offset->Gid = cpu_to_le64(gid); |
654cf14ac
|
5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 |
/* better to leave device as zero when it is */ data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); data_offset->Permissions = cpu_to_le64(mode); if (S_ISREG(mode)) data_offset->Type = cpu_to_le32(UNIX_FILE); else if (S_ISDIR(mode)) data_offset->Type = cpu_to_le32(UNIX_DIR); else if (S_ISLNK(mode)) data_offset->Type = cpu_to_le32(UNIX_SYMLINK); else if (S_ISCHR(mode)) data_offset->Type = cpu_to_le32(UNIX_CHARDEV); else if (S_ISBLK(mode)) data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); else if (S_ISFIFO(mode)) data_offset->Type = cpu_to_le32(UNIX_FIFO); else if (S_ISSOCK(mode)) data_offset->Type = cpu_to_le32(UNIX_SOCKET); } |
1da177e4c
|
5989 |
int |
6d5786a34
|
5990 |
CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c9
|
5991 5992 5993 5994 |
const struct cifs_unix_set_info_args *args, u16 fid, u32 pid_of_opener) { struct smb_com_transaction2_sfi_req *pSMB = NULL; |
b2a3ad9ca
|
5995 |
char *data_offset; |
3bbeeb3c9
|
5996 5997 |
int rc = 0; u16 params, param_offset, offset, byte_count, count; |
f96637be0
|
5998 5999 |
cifs_dbg(FYI, "Set Unix Info (via SetFileInfo) "); |
3bbeeb3c9
|
6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 |
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); if (rc) return rc; pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); params = 6; pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; offset = param_offset + params; |
b2a3ad9ca
|
6016 6017 |
data_offset = (char *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
3bbeeb3c9
|
6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 |
count = sizeof(FILE_UNIX_BASIC_INFO); pSMB->MaxParameterCount = cpu_to_le16(2); /* BB find max SMB PDU from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalDataCount = pSMB->DataCount; pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->Fid = fid; pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); pSMB->Reserved4 = 0; |
be8e3b004
|
6036 |
inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c9
|
6037 |
pSMB->ByteCount = cpu_to_le16(byte_count); |
b2a3ad9ca
|
6038 |
cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c9
|
6039 |
|
792af7b05
|
6040 |
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
3bbeeb3c9
|
6041 |
if (rc) |
f96637be0
|
6042 6043 6044 |
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d ", rc); |
3bbeeb3c9
|
6045 6046 6047 6048 6049 6050 6051 6052 |
/* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ return rc; } int |
6d5786a34
|
6053 |
CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e969
|
6054 |
const char *file_name, |
01ea95e3b
|
6055 6056 |
const struct cifs_unix_set_info_args *args, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
6057 6058 6059 6060 6061 6062 6063 6064 |
{ TRANSACTION2_SPI_REQ *pSMB = NULL; TRANSACTION2_SPI_RSP *pSMBr = NULL; int name_len; int rc = 0; int bytes_returned = 0; FILE_UNIX_BASIC_INFO *data_offset; __u16 params, param_offset, offset, count, byte_count; |
f96637be0
|
6065 6066 |
cifs_dbg(FYI, "In SetUID/GID/Mode "); |
1da177e4c
|
6067 6068 6069 6070 6071 6072 6073 6074 |
setPermsRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
ff691e969
|
6075 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a2
|
6076 |
PATH_MAX, nls_codepage, remap); |
1da177e4c
|
6077 6078 |
name_len++; /* trailing null */ name_len *= 2; |
3e87d8039
|
6079 |
} else { /* BB improve the check for buffer overruns BB */ |
ff691e969
|
6080 |
name_len = strnlen(file_name, PATH_MAX); |
1da177e4c
|
6081 |
name_len++; /* trailing null */ |
ff691e969
|
6082 |
strncpy(pSMB->FileName, file_name, name_len); |
1da177e4c
|
6083 6084 6085 |
} params = 6 + name_len; |
26f57364d
|
6086 |
count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4c
|
6087 |
pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
6088 6089 |
/* BB find max SMB PDU from sess structure BB */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
6090 6091 6092 6093 6094 6095 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
6096 |
InformationLevel) - 4; |
1da177e4c
|
6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 |
offset = param_offset + params; data_offset = (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + offset); memset(data_offset, 0, count); pSMB->DataOffset = cpu_to_le16(offset); pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->ParameterCount = cpu_to_le16(params); pSMB->DataCount = cpu_to_le16(count); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->TotalDataCount = pSMB->DataCount; pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); pSMB->Reserved4 = 0; |
be8e3b004
|
6114 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
6115 |
|
654cf14ac
|
6116 |
cifs_fill_unix_set_info(data_offset, args); |
1da177e4c
|
6117 6118 6119 6120 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
6121 |
if (rc) |
f96637be0
|
6122 6123 |
cifs_dbg(FYI, "SetPathInfo (perms) returned %d ", rc); |
1da177e4c
|
6124 |
|
0d817bc0d
|
6125 |
cifs_buf_release(pSMB); |
1da177e4c
|
6126 6127 6128 6129 |
if (rc == -EAGAIN) goto setPermsRetry; return rc; } |
1da177e4c
|
6130 |
#ifdef CONFIG_CIFS_XATTR |
31c0519f7
|
6131 6132 6133 6134 6135 6136 6137 6138 6139 |
/* * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common * function used by listxattr and getxattr type calls. When ea_name is set, * it looks for that attribute name and stuffs that value into the EAData * buffer. When ea_name is NULL, it stuffs a list of attribute names into the * buffer. In both cases, the return value is either the length of the * resulting data or a negative error code. If EAData is a NULL pointer then * the data isn't copied to it, but the length is returned. */ |
1da177e4c
|
6140 |
ssize_t |
6d5786a34
|
6141 |
CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f7
|
6142 6143 6144 |
const unsigned char *searchName, const unsigned char *ea_name, char *EAData, size_t buf_size, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
6145 6146 6147 6148 6149 6150 |
{ /* BB assumes one setup word */ TRANSACTION2_QPI_REQ *pSMB = NULL; TRANSACTION2_QPI_RSP *pSMBr = NULL; int rc = 0; int bytes_returned; |
6e462b9f2
|
6151 |
int list_len; |
f0d3868b7
|
6152 |
struct fealist *ea_response_data; |
50c2f7538
|
6153 6154 |
struct fea *temp_fea; char *temp_ptr; |
0cd126b50
|
6155 |
char *end_of_smb; |
f0d3868b7
|
6156 |
__u16 params, byte_count, data_offset; |
5980fc966
|
6157 |
unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4c
|
6158 |
|
f96637be0
|
6159 6160 |
cifs_dbg(FYI, "In Query All EAs path %s ", searchName); |
1da177e4c
|
6161 6162 6163 6164 6165 6166 6167 |
QAllEAsRetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
6e462b9f2
|
6168 |
list_len = |
acbbb76a2
|
6169 6170 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, PATH_MAX, nls_codepage, remap); |
6e462b9f2
|
6171 6172 |
list_len++; /* trailing null */ list_len *= 2; |
1da177e4c
|
6173 |
} else { /* BB improve the check for buffer overruns BB */ |
6e462b9f2
|
6174 6175 6176 |
list_len = strnlen(searchName, PATH_MAX); list_len++; /* trailing null */ strncpy(pSMB->FileName, searchName, list_len); |
1da177e4c
|
6177 |
} |
6e462b9f2
|
6178 |
params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4c
|
6179 6180 |
pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
6181 |
/* BB find exact max SMB PDU from sess structure BB */ |
e529614ad
|
6182 |
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4c
|
6183 6184 6185 6186 6187 6188 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; pSMB->ParameterOffset = cpu_to_le16(offsetof( |
50c2f7538
|
6189 |
struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4c
|
6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 |
pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); byte_count = params + 1 /* pad */ ; pSMB->TotalParameterCount = cpu_to_le16(params); pSMB->ParameterCount = pSMB->TotalParameterCount; pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); pSMB->Reserved4 = 0; |
be8e3b004
|
6200 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
6201 6202 6203 6204 6205 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); if (rc) { |
f96637be0
|
6206 6207 |
cifs_dbg(FYI, "Send error in QueryAllEAs = %d ", rc); |
f0d3868b7
|
6208 6209 |
goto QAllEAsOut; } |
1da177e4c
|
6210 |
|
f0d3868b7
|
6211 6212 6213 6214 6215 6216 |
/* BB also check enough total bytes returned */ /* BB we need to improve the validity checking of these trans2 responses */ rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
820a803ff
|
6217 |
if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b7
|
6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 |
rc = -EIO; /* bad smb */ goto QAllEAsOut; } /* check that length of list is not more than bcc */ /* check that each entry does not go beyond length of list */ /* check that each element of each entry does not go beyond end of list */ /* validate_trans2_offsets() */ /* BB check if start of smb + data_offset > &bcc+ bcc */ data_offset = le16_to_cpu(pSMBr->t2.DataOffset); ea_response_data = (struct fealist *) (((char *) &pSMBr->hdr.Protocol) + data_offset); |
6e462b9f2
|
6233 |
list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be0
|
6234 6235 |
cifs_dbg(FYI, "ea length %d ", list_len); |
6e462b9f2
|
6236 |
if (list_len <= 8) { |
f96637be0
|
6237 6238 |
cifs_dbg(FYI, "empty EA list returned from server "); |
60977fcc8
|
6239 6240 6241 |
/* didn't find the named attribute */ if (ea_name) rc = -ENODATA; |
f0d3868b7
|
6242 6243 |
goto QAllEAsOut; } |
0cd126b50
|
6244 |
/* make sure list_len doesn't go past end of SMB */ |
690c522fa
|
6245 |
end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b50
|
6246 |
if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be0
|
6247 6248 |
cifs_dbg(FYI, "EA list appears to go beyond SMB "); |
0cd126b50
|
6249 6250 6251 |
rc = -EIO; goto QAllEAsOut; } |
f0d3868b7
|
6252 |
/* account for ea list len */ |
6e462b9f2
|
6253 |
list_len -= 4; |
f0d3868b7
|
6254 6255 |
temp_fea = ea_response_data->list; temp_ptr = (char *)temp_fea; |
6e462b9f2
|
6256 |
while (list_len > 0) { |
122ca0076
|
6257 |
unsigned int name_len; |
f0d3868b7
|
6258 |
__u16 value_len; |
0cd126b50
|
6259 |
|
6e462b9f2
|
6260 |
list_len -= 4; |
f0d3868b7
|
6261 |
temp_ptr += 4; |
0cd126b50
|
6262 6263 |
/* make sure we can read name_len and value_len */ if (list_len < 0) { |
f96637be0
|
6264 6265 |
cifs_dbg(FYI, "EA entry goes beyond length of list "); |
0cd126b50
|
6266 6267 6268 6269 6270 6271 6272 6273 |
rc = -EIO; goto QAllEAsOut; } name_len = temp_fea->name_len; value_len = le16_to_cpu(temp_fea->value_len); list_len -= name_len + 1 + value_len; if (list_len < 0) { |
f96637be0
|
6274 6275 |
cifs_dbg(FYI, "EA entry goes beyond length of list "); |
0cd126b50
|
6276 6277 6278 |
rc = -EIO; goto QAllEAsOut; } |
31c0519f7
|
6279 |
if (ea_name) { |
91d065c47
|
6280 |
if (ea_name_len == name_len && |
ac423446d
|
6281 |
memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f7
|
6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 |
temp_ptr += name_len + 1; rc = value_len; if (buf_size == 0) goto QAllEAsOut; if ((size_t)value_len > buf_size) { rc = -ERANGE; goto QAllEAsOut; } memcpy(EAData, temp_ptr, value_len); goto QAllEAsOut; } |
f0d3868b7
|
6293 |
} else { |
31c0519f7
|
6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 |
/* account for prefix user. and trailing null */ rc += (5 + 1 + name_len); if (rc < (int) buf_size) { memcpy(EAData, "user.", 5); EAData += 5; memcpy(EAData, temp_ptr, name_len); EAData += name_len; /* null terminate name */ *EAData = 0; ++EAData; } else if (buf_size == 0) { /* skip copy - calc size only */ } else { /* stop before overrun buffer */ rc = -ERANGE; break; } |
1da177e4c
|
6311 |
} |
0cd126b50
|
6312 |
temp_ptr += name_len + 1 + value_len; |
f0d3868b7
|
6313 |
temp_fea = (struct fea *)temp_ptr; |
1da177e4c
|
6314 |
} |
f0d3868b7
|
6315 |
|
31c0519f7
|
6316 6317 6318 |
/* didn't find the named attribute */ if (ea_name) rc = -ENODATA; |
f0d3868b7
|
6319 |
QAllEAsOut: |
0d817bc0d
|
6320 |
cifs_buf_release(pSMB); |
1da177e4c
|
6321 6322 6323 6324 6325 |
if (rc == -EAGAIN) goto QAllEAsRetry; return (ssize_t)rc; } |
1da177e4c
|
6326 |
int |
6d5786a34
|
6327 6328 |
CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, const char *fileName, const char *ea_name, const void *ea_value, |
50c2f7538
|
6329 6330 |
const __u16 ea_value_len, const struct nls_table *nls_codepage, int remap) |
1da177e4c
|
6331 6332 6333 6334 6335 6336 6337 6338 |
{ struct smb_com_transaction2_spi_req *pSMB = NULL; struct smb_com_transaction2_spi_rsp *pSMBr = NULL; struct fealist *parm_data; int name_len; int rc = 0; int bytes_returned = 0; __u16 params, param_offset, byte_count, offset, count; |
f96637be0
|
6339 6340 |
cifs_dbg(FYI, "In SetEA "); |
1da177e4c
|
6341 6342 6343 6344 6345 6346 6347 6348 |
SetEARetry: rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { name_len = |
acbbb76a2
|
6349 6350 |
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, PATH_MAX, nls_codepage, remap); |
1da177e4c
|
6351 6352 |
name_len++; /* trailing null */ name_len *= 2; |
50c2f7538
|
6353 |
} else { /* BB improve the check for buffer overruns BB */ |
1da177e4c
|
6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 |
name_len = strnlen(fileName, PATH_MAX); name_len++; /* trailing null */ strncpy(pSMB->FileName, fileName, name_len); } params = 6 + name_len; /* done calculating parms using name_len of file name, now use name_len to calculate length of ea name we are going to create in the inode xattrs */ |
790fe579f
|
6364 |
if (ea_name == NULL) |
1da177e4c
|
6365 6366 |
name_len = 0; else |
50c2f7538
|
6367 |
name_len = strnlen(ea_name, 255); |
1da177e4c
|
6368 |
|
dae5dbdbd
|
6369 |
count = sizeof(*parm_data) + ea_value_len + name_len; |
1da177e4c
|
6370 |
pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5e
|
6371 6372 |
/* BB find max SMB PDU from sess */ pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4c
|
6373 6374 6375 6376 6377 6378 |
pSMB->MaxSetupCount = 0; pSMB->Reserved = 0; pSMB->Flags = 0; pSMB->Timeout = 0; pSMB->Reserved2 = 0; param_offset = offsetof(struct smb_com_transaction2_spi_req, |
50c2f7538
|
6379 |
InformationLevel) - 4; |
1da177e4c
|
6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 |
offset = param_offset + params; pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_EA); parm_data = (struct fealist *) (((char *) &pSMB->hdr.Protocol) + offset); pSMB->ParameterOffset = cpu_to_le16(param_offset); pSMB->DataOffset = cpu_to_le16(offset); pSMB->SetupCount = 1; pSMB->Reserved3 = 0; pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); byte_count = 3 /* pad */ + params + count; pSMB->DataCount = cpu_to_le16(count); parm_data->list_len = cpu_to_le32(count); parm_data->list[0].EA_flags = 0; /* we checked above that name len is less than 255 */ |
53b3531bb
|
6397 |
parm_data->list[0].name_len = (__u8)name_len; |
1da177e4c
|
6398 |
/* EA names are always ASCII */ |
790fe579f
|
6399 |
if (ea_name) |
50c2f7538
|
6400 |
strncpy(parm_data->list[0].name, ea_name, name_len); |
1da177e4c
|
6401 6402 6403 6404 |
parm_data->list[0].name[name_len] = 0; parm_data->list[0].value_len = cpu_to_le16(ea_value_len); /* caller ensures that ea_value_len is less than 64K but we need to ensure that it fits within the smb */ |
50c2f7538
|
6405 6406 |
/*BB add length check to see if it would fit in negotiated SMB buffer size BB */ |
790fe579f
|
6407 6408 |
/* if (ea_value_len > buffer_size - 512 (enough for header)) */ if (ea_value_len) |
50c2f7538
|
6409 6410 |
memcpy(parm_data->list[0].name+name_len+1, ea_value, ea_value_len); |
1da177e4c
|
6411 6412 6413 6414 6415 |
pSMB->TotalDataCount = pSMB->DataCount; pSMB->ParameterCount = cpu_to_le16(params); pSMB->TotalParameterCount = pSMB->ParameterCount; pSMB->Reserved4 = 0; |
be8e3b004
|
6416 |
inc_rfc1001_len(pSMB, byte_count); |
1da177e4c
|
6417 6418 6419 |
pSMB->ByteCount = cpu_to_le16(byte_count); rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
ad7a2926b
|
6420 |
if (rc) |
f96637be0
|
6421 6422 |
cifs_dbg(FYI, "SetPathInfo (EA) returned %d ", rc); |
1da177e4c
|
6423 6424 6425 6426 6427 6428 6429 6430 |
cifs_buf_release(pSMB); if (rc == -EAGAIN) goto SetEARetry; return rc; } |
1da177e4c
|
6431 |
#endif |
0eff0e267
|
6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 |
#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */ /* * Years ago the kernel added a "dnotify" function for Samba server, * to allow network clients (such as Windows) to display updated * lists of files in directory listings automatically when * files are added by one user when another user has the * same directory open on their desktop. The Linux cifs kernel * client hooked into the kernel side of this interface for * the same reason, but ironically when the VFS moved from * "dnotify" to "inotify" it became harder to plug in Linux * network file system clients (the most obvious use case * for notify interfaces is when multiple users can update * the contents of the same directory - exactly what network * file systems can do) although the server (Samba) could * still use it. For the short term we leave the worker * function ifdeffed out (below) until inotify is fixed * in the VFS to make it easier to plug in network file * system clients. If inotify turns out to be permanently * incompatible for network fs clients, we could instead simply * expose this config flag by adding a future cifs (and smb2) notify ioctl. */ |
6d5786a34
|
6454 |
int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon, |
0eff0e267
|
6455 6456 6457 6458 6459 6460 6461 6462 6463 |
const int notify_subdirs, const __u16 netfid, __u32 filter, struct file *pfile, int multishot, const struct nls_table *nls_codepage) { int rc = 0; struct smb_com_transaction_change_notify_req *pSMB = NULL; struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; struct dir_notify_req *dnotify_req; int bytes_returned; |
f96637be0
|
6464 6465 |
cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d ", (int)netfid); |
0eff0e267
|
6466 6467 6468 6469 6470 6471 6472 6473 |
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; pSMB->TotalParameterCount = 0 ; pSMB->TotalDataCount = 0; pSMB->MaxParameterCount = cpu_to_le32(2); |
c974befa4
|
6474 |
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
0eff0e267
|
6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 |
pSMB->MaxSetupCount = 4; pSMB->Reserved = 0; pSMB->ParameterOffset = 0; pSMB->DataCount = 0; pSMB->DataOffset = 0; pSMB->SetupCount = 4; /* single byte does not need le conversion */ pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); pSMB->ParameterCount = pSMB->TotalParameterCount; if (notify_subdirs) pSMB->WatchTree = 1; /* one byte - no le conversion needed */ pSMB->Reserved2 = 0; pSMB->CompletionFilter = cpu_to_le32(filter); pSMB->Fid = netfid; /* file handle always le */ pSMB->ByteCount = 0; rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_ASYNC_OP); if (rc) { |
f96637be0
|
6494 6495 |
cifs_dbg(FYI, "Error in Notify = %d ", rc); |
0eff0e267
|
6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 |
} else { /* Add file to outstanding requests */ /* BB change to kmem cache alloc */ dnotify_req = kmalloc( sizeof(struct dir_notify_req), GFP_KERNEL); if (dnotify_req) { dnotify_req->Pid = pSMB->hdr.Pid; dnotify_req->PidHigh = pSMB->hdr.PidHigh; dnotify_req->Mid = pSMB->hdr.Mid; dnotify_req->Tid = pSMB->hdr.Tid; dnotify_req->Uid = pSMB->hdr.Uid; dnotify_req->netfid = netfid; dnotify_req->pfile = pfile; dnotify_req->filter = filter; dnotify_req->multishot = multishot; spin_lock(&GlobalMid_Lock); list_add_tail(&dnotify_req->lhead, &GlobalDnotifyReqList); spin_unlock(&GlobalMid_Lock); } else rc = -ENOMEM; } cifs_buf_release(pSMB); return rc; } #endif /* was needed for dnotify, and will be needed for inotify when VFS fix */ |