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fs/nfsd/nfsctl.c
29.4 KB
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/* |
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* Syscall interface to knfsd. * * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */ |
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#include <linux/slab.h> |
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#include <linux/namei.h> |
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#include <linux/ctype.h> |
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|
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#include <linux/sunrpc/svcsock.h> |
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#include <linux/lockd/lockd.h> |
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#include <linux/sunrpc/clnt.h> |
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#include <linux/sunrpc/gss_api.h> |
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#include <linux/sunrpc/gss_krb5_enctypes.h> |
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#include <linux/module.h> |
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|
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#include "idmap.h" |
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#include "nfsd.h" #include "cache.h" |
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#include "fault_inject.h" |
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|
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/* |
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* We have a single directory with several nodes in it. |
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*/ enum { NFSD_Root = 1, |
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NFSD_List, |
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NFSD_Export_features, |
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NFSD_Fh, |
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NFSD_FO_UnlockIP, |
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NFSD_FO_UnlockFS, |
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NFSD_Threads, |
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NFSD_Pool_Threads, |
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NFSD_Pool_Stats, |
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NFSD_Versions, |
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NFSD_Ports, |
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NFSD_MaxBlkSize, |
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NFSD_SupportedEnctypes, |
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/* * The below MUST come last. Otherwise we leave a hole in nfsd_files[] * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops */ #ifdef CONFIG_NFSD_V4 |
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NFSD_Leasetime, |
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NFSD_Gracetime, |
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NFSD_RecoveryDir, |
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#endif |
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}; /* * write() for these nodes. */ |
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static ssize_t write_filehandle(struct file *file, char *buf, size_t size); |
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static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); |
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static ssize_t write_threads(struct file *file, char *buf, size_t size); |
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static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); |
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static ssize_t write_versions(struct file *file, char *buf, size_t size); |
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static ssize_t write_ports(struct file *file, char *buf, size_t size); |
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static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); |
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#ifdef CONFIG_NFSD_V4 |
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static ssize_t write_leasetime(struct file *file, char *buf, size_t size); |
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static ssize_t write_gracetime(struct file *file, char *buf, size_t size); |
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static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); |
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#endif |
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static ssize_t (*write_op[])(struct file *, char *, size_t) = { |
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[NFSD_Fh] = write_filehandle, |
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[NFSD_FO_UnlockIP] = write_unlock_ip, [NFSD_FO_UnlockFS] = write_unlock_fs, |
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[NFSD_Threads] = write_threads, |
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[NFSD_Pool_Threads] = write_pool_threads, |
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[NFSD_Versions] = write_versions, |
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[NFSD_Ports] = write_ports, |
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[NFSD_MaxBlkSize] = write_maxblksize, |
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#ifdef CONFIG_NFSD_V4 |
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[NFSD_Leasetime] = write_leasetime, |
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[NFSD_Gracetime] = write_gracetime, |
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[NFSD_RecoveryDir] = write_recoverydir, |
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#endif |
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}; static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) { |
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ino_t ino = file->f_path.dentry->d_inode->i_ino; |
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char *data; ssize_t rv; |
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if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) |
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return -EINVAL; data = simple_transaction_get(file, buf, size); if (IS_ERR(data)) return PTR_ERR(data); rv = write_op[ino](file, data, size); |
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if (rv >= 0) { |
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simple_transaction_set(file, rv); rv = size; } return rv; } |
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static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) { if (! file->private_data) { /* An attempt to read a transaction file without writing * causes a 0-byte write so that the file can return * state information */ ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); if (rv < 0) return rv; } return simple_transaction_read(file, buf, size, pos); } |
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static const struct file_operations transaction_ops = { |
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.write = nfsctl_transaction_write, |
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.read = nfsctl_transaction_read, |
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.release = simple_transaction_release, |
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.llseek = default_llseek, |
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}; |
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static int exports_open(struct inode *inode, struct file *file) { return seq_open(file, &nfs_exports_op); } |
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static const struct file_operations exports_operations = { |
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.open = exports_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, |
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.owner = THIS_MODULE, |
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}; |
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static int export_features_show(struct seq_file *m, void *v) { seq_printf(m, "0x%x 0x%x ", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); return 0; } static int export_features_open(struct inode *inode, struct file *file) { return single_open(file, export_features_show, NULL); } static struct file_operations export_features_operations = { .open = export_features_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; |
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#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
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static int supported_enctypes_show(struct seq_file *m, void *v) { |
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seq_printf(m, KRB5_SUPPORTED_ENCTYPES); |
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return 0; } static int supported_enctypes_open(struct inode *inode, struct file *file) { return single_open(file, supported_enctypes_show, NULL); } static struct file_operations supported_enctypes_ops = { .open = supported_enctypes_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; |
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#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
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|
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extern int nfsd_pool_stats_open(struct inode *inode, struct file *file); |
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extern int nfsd_pool_stats_release(struct inode *inode, struct file *file); |
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|
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static const struct file_operations pool_stats_operations = { |
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.open = nfsd_pool_stats_open, .read = seq_read, .llseek = seq_lseek, |
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.release = nfsd_pool_stats_release, |
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.owner = THIS_MODULE, }; |
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/*----------------------------------------------------------------------------*/ /* * payload - write methods |
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*/ |
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|
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/** * write_unlock_ip - Release all locks used by a client * * Experimental. * * Input: * buf: ' '-terminated C string containing a |
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* presentation format IP address |
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* size: length of C string in @buf * Output: * On success: returns zero if all specified locks were released; * returns one if one or more locks were not released * On error: return code is negative errno value |
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*/ |
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static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) |
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{ |
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struct sockaddr_storage address; struct sockaddr *sap = (struct sockaddr *)&address; size_t salen = sizeof(address); |
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char *fo_path; |
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/* sanity check */ if (size == 0) return -EINVAL; if (buf[size-1] != ' ') return -EINVAL; fo_path = buf; if (qword_get(&buf, fo_path, size) < 0) return -EINVAL; |
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if (rpc_pton(fo_path, size, sap, salen) == 0) |
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return -EINVAL; |
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|
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return nlmsvc_unlock_all_by_ip(sap); |
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} |
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/** * write_unlock_fs - Release all locks on a local file system * * Experimental. * * Input: * buf: ' '-terminated C string containing the * absolute pathname of a local file system * size: length of C string in @buf * Output: * On success: returns zero if all specified locks were released; * returns one if one or more locks were not released * On error: return code is negative errno value */ |
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static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) |
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{ |
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struct path path; |
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char *fo_path; int error; /* sanity check */ if (size == 0) return -EINVAL; if (buf[size-1] != ' ') return -EINVAL; fo_path = buf; if (qword_get(&buf, fo_path, size) < 0) return -EINVAL; |
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error = kern_path(fo_path, 0, &path); |
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if (error) return error; |
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/* * XXX: Needs better sanity checking. Otherwise we could end up * releasing locks on the wrong file system. * * For example: * 1. Does the path refer to a directory? * 2. Is that directory a mount point, or * 3. Is that directory the root of an exported file system? */ |
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error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); |
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|
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path_put(&path); |
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return error; } |
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/** * write_filehandle - Get a variable-length NFS file handle by path * * On input, the buffer contains a ' '-terminated C string comprised of * three alphanumeric words separated by whitespace. The string may * contain escape sequences. * * Input: * buf: * domain: client domain name * path: export pathname * maxsize: numeric maximum size of * @buf * size: length of C string in @buf * Output: * On success: passed-in buffer filled with ' '-terminated C * string containing a ASCII hex text version * of the NFS file handle; * return code is the size in bytes of the string * On error: return code is negative errno value */ |
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static ssize_t write_filehandle(struct file *file, char *buf, size_t size) { |
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char *dname, *path; |
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int uninitialized_var(maxsize); |
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char *mesg = buf; int len; struct auth_domain *dom; struct knfsd_fh fh; |
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if (size == 0) return -EINVAL; |
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if (buf[size-1] != ' ') return -EINVAL; buf[size-1] = 0; dname = mesg; len = qword_get(&mesg, dname, size); |
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if (len <= 0) return -EINVAL; |
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path = dname+len+1; len = qword_get(&mesg, path, size); |
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if (len <= 0) return -EINVAL; |
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len = get_int(&mesg, &maxsize); if (len) return len; if (maxsize < NFS_FHSIZE) return -EINVAL; if (maxsize > NFS3_FHSIZE) maxsize = NFS3_FHSIZE; if (qword_get(&mesg, mesg, size)>0) return -EINVAL; /* we have all the words, they are in buf.. */ dom = unix_domain_find(dname); if (!dom) return -ENOMEM; len = exp_rootfh(dom, path, &fh, maxsize); auth_domain_put(dom); if (len) return len; |
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mesg = buf; len = SIMPLE_TRANSACTION_LIMIT; |
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qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); mesg[-1] = ' '; return mesg - buf; } |
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/** * write_threads - Start NFSD, or report the current number of running threads * * Input: * buf: ignored * size: zero * Output: * On success: passed-in buffer filled with ' '-terminated C * string numeric value representing the number of * running NFSD threads; * return code is the size in bytes of the string * On error: return code is zero * * OR * * Input: * buf: C string containing an unsigned * integer value representing the * number of NFSD threads to start * size: non-zero length of C string in @buf * Output: * On success: NFS service is started; * passed-in buffer filled with ' '-terminated C * string numeric value representing the number of * running NFSD threads; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
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static ssize_t write_threads(struct file *file, char *buf, size_t size) { |
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char *mesg = buf; int rv; if (size > 0) { int newthreads; rv = get_int(&mesg, &newthreads); if (rv) return rv; |
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if (newthreads < 0) |
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return -EINVAL; |
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rv = nfsd_svc(NFS_PORT, newthreads); |
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if (rv < 0) |
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return rv; |
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} else rv = nfsd_nrthreads(); |
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|
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return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d ", rv); |
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} |
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/** * write_pool_threads - Set or report the current number of threads per pool * * Input: * buf: ignored * size: zero * * OR * * Input: * buf: C string containing whitespace- * separated unsigned integer values * representing the number of NFSD * threads to start in each pool * size: non-zero length of C string in @buf * Output: * On success: passed-in buffer filled with ' '-terminated C * string containing integer values representing the * number of NFSD threads in each pool; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
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static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) { /* if size > 0, look for an array of number of threads per node * and apply them then write out number of threads per node as reply */ char *mesg = buf; int i; int rv; int len; |
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int npools; |
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int *nthreads; |
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mutex_lock(&nfsd_mutex); npools = nfsd_nrpools(); |
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if (npools == 0) { /* * NFS is shut down. The admin can start it by * writing to the threads file but NOT the pool_threads * file, sorry. Report zero threads. */ |
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mutex_unlock(&nfsd_mutex); |
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strcpy(buf, "0 "); return strlen(buf); } nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); |
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rv = -ENOMEM; |
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if (nthreads == NULL) |
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goto out_free; |
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if (size > 0) { for (i = 0; i < npools; i++) { rv = get_int(&mesg, &nthreads[i]); if (rv == -ENOENT) break; /* fewer numbers than pools */ if (rv) goto out_free; /* syntax error */ rv = -EINVAL; if (nthreads[i] < 0) goto out_free; } rv = nfsd_set_nrthreads(i, nthreads); if (rv) goto out_free; } rv = nfsd_get_nrthreads(npools, nthreads); if (rv) goto out_free; mesg = buf; size = SIMPLE_TRANSACTION_LIMIT; for (i = 0; i < npools && size > 0; i++) { snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? ' ' : ' ')); len = strlen(mesg); size -= len; mesg += len; } |
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rv = mesg - buf; |
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out_free: kfree(nthreads); |
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mutex_unlock(&nfsd_mutex); |
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return rv; } |
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static ssize_t __write_versions(struct file *file, char *buf, size_t size) |
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{ |
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489 |
char *mesg = buf; |
8daf220a6 nfsd41: control n... |
490 |
char *vers, *minorp, sign; |
261758b5c NFSD: Stricter bu... |
491 |
int len, num, remaining; |
8daf220a6 nfsd41: control n... |
492 |
unsigned minor; |
70c3b76c2 [PATCH] knfsd: Al... |
493 494 495 496 497 |
ssize_t tlen = 0; char *sep; if (size>0) { if (nfsd_serv) |
6658d3a7b [PATCH] knfsd: re... |
498 499 500 501 |
/* Cannot change versions without updating * nfsd_serv->sv_xdrsize, and reallocing * rq_argp and rq_resp */ |
70c3b76c2 [PATCH] knfsd: Al... |
502 503 504 505 506 507 508 509 510 511 512 513 |
return -EBUSY; if (buf[size-1] != ' ') return -EINVAL; buf[size-1] = 0; vers = mesg; len = qword_get(&mesg, vers, size); if (len <= 0) return -EINVAL; do { sign = *vers; if (sign == '+' || sign == '-') |
8daf220a6 nfsd41: control n... |
514 |
num = simple_strtol((vers+1), &minorp, 0); |
70c3b76c2 [PATCH] knfsd: Al... |
515 |
else |
8daf220a6 nfsd41: control n... |
516 517 518 519 520 521 522 523 524 525 526 527 |
num = simple_strtol(vers, &minorp, 0); if (*minorp == '.') { if (num < 4) return -EINVAL; minor = simple_strtoul(minorp+1, NULL, 0); if (minor == 0) return -EINVAL; if (nfsd_minorversion(minor, sign == '-' ? NFSD_CLEAR : NFSD_SET) < 0) return -EINVAL; goto next; } |
70c3b76c2 [PATCH] knfsd: Al... |
528 529 530 531 |
switch(num) { case 2: case 3: case 4: |
6658d3a7b [PATCH] knfsd: re... |
532 |
nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c2 [PATCH] knfsd: Al... |
533 534 535 536 |
break; default: return -EINVAL; } |
8daf220a6 nfsd41: control n... |
537 |
next: |
70c3b76c2 [PATCH] knfsd: Al... |
538 |
vers += len + 1; |
70c3b76c2 [PATCH] knfsd: Al... |
539 540 541 542 |
} while ((len = qword_get(&mesg, vers, size)) > 0); /* If all get turned off, turn them back on, as * having no versions is BAD */ |
6658d3a7b [PATCH] knfsd: re... |
543 |
nfsd_reset_versions(); |
70c3b76c2 [PATCH] knfsd: Al... |
544 |
} |
261758b5c NFSD: Stricter bu... |
545 |
|
70c3b76c2 [PATCH] knfsd: Al... |
546 547 548 |
/* Now write current state into reply buffer */ len = 0; sep = ""; |
261758b5c NFSD: Stricter bu... |
549 |
remaining = SIMPLE_TRANSACTION_LIMIT; |
70c3b76c2 [PATCH] knfsd: Al... |
550 |
for (num=2 ; num <= 4 ; num++) |
6658d3a7b [PATCH] knfsd: re... |
551 |
if (nfsd_vers(num, NFSD_AVAIL)) { |
261758b5c NFSD: Stricter bu... |
552 |
len = snprintf(buf, remaining, "%s%c%d", sep, |
6658d3a7b [PATCH] knfsd: re... |
553 |
nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c2 [PATCH] knfsd: Al... |
554 555 |
num); sep = " "; |
261758b5c NFSD: Stricter bu... |
556 557 558 559 560 561 |
if (len > remaining) break; remaining -= len; buf += len; tlen += len; |
70c3b76c2 [PATCH] knfsd: Al... |
562 |
} |
8daf220a6 nfsd41: control n... |
563 |
if (nfsd_vers(4, NFSD_AVAIL)) |
261758b5c NFSD: Stricter bu... |
564 565 566 |
for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++) { len = snprintf(buf, remaining, " %c4.%u", |
8daf220a6 nfsd41: control n... |
567 568 569 570 |
(nfsd_vers(4, NFSD_TEST) && nfsd_minorversion(minor, NFSD_TEST)) ? '+' : '-', minor); |
261758b5c NFSD: Stricter bu... |
571 572 573 574 575 576 577 578 579 580 581 582 583 |
if (len > remaining) break; remaining -= len; buf += len; tlen += len; } len = snprintf(buf, remaining, " "); if (len > remaining) return -EINVAL; return tlen + len; |
70c3b76c2 [PATCH] knfsd: Al... |
584 |
} |
262a09823 NFSD: Add documen... |
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 |
/** * write_versions - Set or report the available NFS protocol versions * * Input: * buf: ignored * size: zero * Output: * On success: passed-in buffer filled with ' '-terminated C * string containing positive or negative integer * values representing the current status of each * protocol version; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value * * OR * * Input: * buf: C string containing whitespace- * separated positive or negative * integer values representing NFS * protocol versions to enable ("+n") * or disable ("-n") * size: non-zero length of C string in @buf * Output: * On success: status of zero or more protocol versions has * been updated; passed-in buffer filled with * ' '-terminated C string containing positive * or negative integer values representing the * current status of each protocol version; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
3dd98a3bc knfsd: clean up n... |
619 620 621 622 623 624 625 626 627 |
static ssize_t write_versions(struct file *file, char *buf, size_t size) { ssize_t rv; mutex_lock(&nfsd_mutex); rv = __write_versions(file, buf, size); mutex_unlock(&nfsd_mutex); return rv; } |
4cd5dc751 NFSD: Refactor tr... |
628 |
/* |
0a5372d8a NFSD: Finish refa... |
629 630 631 632 633 634 635 |
* Zero-length write. Return a list of NFSD's current listener * transports. */ static ssize_t __write_ports_names(char *buf) { if (nfsd_serv == NULL) return 0; |
335c54bdc NFSD: Prevent a b... |
636 |
return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); |
0a5372d8a NFSD: Finish refa... |
637 638 639 |
} /* |
0b7c2f6fc NFSD: Refactor so... |
640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 |
* A single 'fd' number was written, in which case it must be for * a socket of a supported family/protocol, and we use it as an * nfsd listener. */ static ssize_t __write_ports_addfd(char *buf) { char *mesg = buf; int fd, err; err = get_int(&mesg, &fd); if (err != 0 || fd < 0) return -EINVAL; err = nfsd_create_serv(); if (err != 0) return err; |
bfba9ab4c SUNRPC: pass buff... |
656 |
err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); |
78a8d7c8c nfsd: fix error h... |
657 |
if (err < 0) { |
78a8d7c8c nfsd: fix error h... |
658 659 660 |
svc_destroy(nfsd_serv); return err; } |
0b7c2f6fc NFSD: Refactor so... |
661 |
|
ea068bad2 NFSD: move lockd_... |
662 663 664 |
/* Decrease the count, but don't shut down the service */ nfsd_serv->sv_nrthreads--; return err; |
0b7c2f6fc NFSD: Refactor so... |
665 666 667 |
} /* |
82d565919 NFSD: Refactor po... |
668 669 670 671 672 673 674 675 676 677 678 679 |
* A '-' followed by the 'name' of a socket means we close the socket. */ static ssize_t __write_ports_delfd(char *buf) { char *toclose; int len = 0; toclose = kstrdup(buf + 1, GFP_KERNEL); if (toclose == NULL) return -ENOMEM; if (nfsd_serv != NULL) |
8435d34db SUNRPC: pass buff... |
680 681 |
len = svc_sock_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT, toclose); |
82d565919 NFSD: Refactor po... |
682 683 684 685 686 |
kfree(toclose); return len; } /* |
4eb68c266 NFSD: Refactor tr... |
687 688 689 690 691 692 |
* A transport listener is added by writing it's transport name and * a port number. */ static ssize_t __write_ports_addxprt(char *buf) { char transport[16]; |
37498292a NFSD: Create PF_I... |
693 |
struct svc_xprt *xprt; |
4eb68c266 NFSD: Refactor tr... |
694 695 696 697 |
int port, err; if (sscanf(buf, "%15s %4u", transport, &port) != 2) return -EINVAL; |
4be929be3 kernel-wide: repl... |
698 |
if (port < 1 || port > USHRT_MAX) |
4eb68c266 NFSD: Refactor tr... |
699 700 701 702 703 |
return -EINVAL; err = nfsd_create_serv(); if (err != 0) return err; |
fc5d00b04 sunrpc: Add net a... |
704 |
err = svc_create_xprt(nfsd_serv, transport, &init_net, |
4eb68c266 NFSD: Refactor tr... |
705 |
PF_INET, port, SVC_SOCK_ANONYMOUS); |
687179081 SUNRPC: NFS kerne... |
706 |
if (err < 0) |
37498292a NFSD: Create PF_I... |
707 |
goto out_err; |
fc5d00b04 sunrpc: Add net a... |
708 |
err = svc_create_xprt(nfsd_serv, transport, &init_net, |
37498292a NFSD: Create PF_I... |
709 710 711 |
PF_INET6, port, SVC_SOCK_ANONYMOUS); if (err < 0 && err != -EAFNOSUPPORT) goto out_close; |
0cd14a061 nfsd: fix error h... |
712 713 714 |
/* Decrease the count, but don't shut down the service */ nfsd_serv->sv_nrthreads--; |
4eb68c266 NFSD: Refactor tr... |
715 |
return 0; |
37498292a NFSD: Create PF_I... |
716 717 718 719 720 721 722 |
out_close: xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port); if (xprt != NULL) { svc_close_xprt(xprt); svc_xprt_put(xprt); } out_err: |
0cd14a061 nfsd: fix error h... |
723 |
svc_destroy(nfsd_serv); |
37498292a NFSD: Create PF_I... |
724 |
return err; |
4eb68c266 NFSD: Refactor tr... |
725 726 727 |
} /* |
4cd5dc751 NFSD: Refactor tr... |
728 729 730 731 732 733 734 735 736 737 738 |
* A transport listener is removed by writing a "-", it's transport * name, and it's port number. */ static ssize_t __write_ports_delxprt(char *buf) { struct svc_xprt *xprt; char transport[16]; int port; if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2) return -EINVAL; |
4be929be3 kernel-wide: repl... |
739 |
if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL) |
4cd5dc751 NFSD: Refactor tr... |
740 741 742 743 744 745 746 747 748 749 |
return -EINVAL; xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port); if (xprt == NULL) return -ENOTCONN; svc_close_xprt(xprt); svc_xprt_put(xprt); return 0; } |
bedbdd8ba knfsd: Replace lo... |
750 |
static ssize_t __write_ports(struct file *file, char *buf, size_t size) |
80212d59e [PATCH] knfsd: de... |
751 |
{ |
0a5372d8a NFSD: Finish refa... |
752 753 |
if (size == 0) return __write_ports_names(buf); |
0b7c2f6fc NFSD: Refactor so... |
754 755 756 |
if (isdigit(buf[0])) return __write_ports_addfd(buf); |
82d565919 NFSD: Refactor po... |
757 758 759 |
if (buf[0] == '-' && isdigit(buf[1])) return __write_ports_delfd(buf); |
4eb68c266 NFSD: Refactor tr... |
760 761 762 |
if (isalpha(buf[0])) return __write_ports_addxprt(buf); |
4cd5dc751 NFSD: Refactor tr... |
763 764 765 |
if (buf[0] == '-' && isalpha(buf[1])) return __write_ports_delxprt(buf); |
b41b66d63 [PATCH] knfsd: al... |
766 |
return -EINVAL; |
80212d59e [PATCH] knfsd: de... |
767 |
} |
262a09823 NFSD: Add documen... |
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 |
/** * write_ports - Pass a socket file descriptor or transport name to listen on * * Input: * buf: ignored * size: zero * Output: * On success: passed-in buffer filled with a ' '-terminated C * string containing a whitespace-separated list of * named NFSD listeners; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value * * OR * * Input: * buf: C string containing an unsigned * integer value representing a bound * but unconnected socket that is to be |
c71206a7b NFSD: Note an add... |
788 789 790 |
* used as an NFSD listener; listen(3) * must be called for a SOCK_STREAM * socket, otherwise it is ignored |
262a09823 NFSD: Add documen... |
791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 |
* size: non-zero length of C string in @buf * Output: * On success: NFS service is started; * passed-in buffer filled with a ' '-terminated C * string containing a unique alphanumeric name of * the listener; * return code is the size in bytes of the string * On error: return code is a negative errno value * * OR * * Input: * buf: C string containing a "-" followed * by an integer value representing a * previously passed in socket file * descriptor * size: non-zero length of C string in @buf * Output: * On success: NFS service no longer listens on that socket; * passed-in buffer filled with a ' '-terminated C * string containing a unique name of the listener; * return code is the size in bytes of the string * On error: return code is a negative errno value * * OR * * Input: * buf: C string containing a transport * name and an unsigned integer value * representing the port to listen on, * separated by whitespace * size: non-zero length of C string in @buf * Output: * On success: returns zero; NFS service is started * On error: return code is a negative errno value * * OR * * Input: * buf: C string containing a "-" followed * by a transport name and an unsigned * integer value representing the port * to listen on, separated by whitespace * size: non-zero length of C string in @buf * Output: * On success: returns zero; NFS service no longer listens * on that transport * On error: return code is a negative errno value */ |
bedbdd8ba knfsd: Replace lo... |
842 843 844 |
static ssize_t write_ports(struct file *file, char *buf, size_t size) { ssize_t rv; |
3dd98a3bc knfsd: clean up n... |
845 |
|
bedbdd8ba knfsd: Replace lo... |
846 847 848 849 850 |
mutex_lock(&nfsd_mutex); rv = __write_ports(file, buf, size); mutex_unlock(&nfsd_mutex); return rv; } |
596bbe53e [PATCH] knfsd: Al... |
851 |
int nfsd_max_blksize; |
262a09823 NFSD: Add documen... |
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 |
/** * write_maxblksize - Set or report the current NFS blksize * * Input: * buf: ignored * size: zero * * OR * * Input: * buf: C string containing an unsigned * integer value representing the new * NFS blksize * size: non-zero length of C string in @buf * Output: * On success: passed-in buffer filled with ' '-terminated C string * containing numeric value of the current NFS blksize * setting; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
596bbe53e [PATCH] knfsd: Al... |
874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 |
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) { char *mesg = buf; if (size > 0) { int bsize; int rv = get_int(&mesg, &bsize); if (rv) return rv; /* force bsize into allowed range and * required alignment. */ if (bsize < 1024) bsize = 1024; if (bsize > NFSSVC_MAXBLKSIZE) bsize = NFSSVC_MAXBLKSIZE; bsize &= ~(1024-1); |
bedbdd8ba knfsd: Replace lo... |
890 |
mutex_lock(&nfsd_mutex); |
7fa53cc87 nfsd: don't allow... |
891 |
if (nfsd_serv) { |
bedbdd8ba knfsd: Replace lo... |
892 |
mutex_unlock(&nfsd_mutex); |
596bbe53e [PATCH] knfsd: Al... |
893 894 895 |
return -EBUSY; } nfsd_max_blksize = bsize; |
bedbdd8ba knfsd: Replace lo... |
896 |
mutex_unlock(&nfsd_mutex); |
596bbe53e [PATCH] knfsd: Al... |
897 |
} |
e06b64050 NFSD: Stricter bu... |
898 899 900 901 |
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d ", nfsd_max_blksize); |
596bbe53e [PATCH] knfsd: Al... |
902 |
} |
70c3b76c2 [PATCH] knfsd: Al... |
903 |
#ifdef CONFIG_NFSD_V4 |
f01357401 nfsd4: reshuffle ... |
904 |
static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) |
1da177e4c Linux-2.6.12-rc2 |
905 |
{ |
1da177e4c Linux-2.6.12-rc2 |
906 |
char *mesg = buf; |
f01357401 nfsd4: reshuffle ... |
907 |
int rv, i; |
1da177e4c Linux-2.6.12-rc2 |
908 909 |
if (size > 0) { |
3dd98a3bc knfsd: clean up n... |
910 911 |
if (nfsd_serv) return -EBUSY; |
f01357401 nfsd4: reshuffle ... |
912 |
rv = get_int(&mesg, &i); |
1da177e4c Linux-2.6.12-rc2 |
913 914 |
if (rv) return rv; |
e7b184f19 nfsd4: document l... |
915 916 917 918 919 920 921 922 923 924 925 926 |
/* * Some sanity checking. We don't have a reason for * these particular numbers, but problems with the * extremes are: * - Too short: the briefest network outage may * cause clients to lose all their locks. Also, * the frequent polling may be wasteful. * - Too long: do you really want reboot recovery * to take more than an hour? Or to make other * clients wait an hour before being able to * revoke a dead client's locks? */ |
f01357401 nfsd4: reshuffle ... |
927 |
if (i < 10 || i > 3600) |
1da177e4c Linux-2.6.12-rc2 |
928 |
return -EINVAL; |
f01357401 nfsd4: reshuffle ... |
929 |
*time = i; |
1da177e4c Linux-2.6.12-rc2 |
930 |
} |
e06b64050 NFSD: Stricter bu... |
931 |
|
f01357401 nfsd4: reshuffle ... |
932 933 934 935 936 937 938 939 940 941 942 943 |
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld ", *time); } static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) { ssize_t rv; mutex_lock(&nfsd_mutex); rv = __nfsd4_write_time(file, buf, size, time); mutex_unlock(&nfsd_mutex); return rv; |
1da177e4c Linux-2.6.12-rc2 |
944 |
} |
262a09823 NFSD: Add documen... |
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 |
/** * write_leasetime - Set or report the current NFSv4 lease time * * Input: * buf: ignored * size: zero * * OR * * Input: * buf: C string containing an unsigned * integer value representing the new * NFSv4 lease expiry time * size: non-zero length of C string in @buf * Output: * On success: passed-in buffer filled with ' '-terminated C * string containing unsigned integer value of the * current lease expiry time; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
3dd98a3bc knfsd: clean up n... |
967 968 |
static ssize_t write_leasetime(struct file *file, char *buf, size_t size) { |
f01357401 nfsd4: reshuffle ... |
969 |
return nfsd4_write_time(file, buf, size, &nfsd4_lease); |
3dd98a3bc knfsd: clean up n... |
970 |
} |
efc4bb4fd nfsd4: allow sett... |
971 972 973 974 975 976 977 978 979 980 981 982 983 984 |
/** * write_gracetime - Set or report current NFSv4 grace period time * * As above, but sets the time of the NFSv4 grace period. * * Note this should never be set to less than the *previous* * lease-period time, but we don't try to enforce this. (In the common * case (a new boot), we don't know what the previous lease time was * anyway.) */ static ssize_t write_gracetime(struct file *file, char *buf, size_t size) { return nfsd4_write_time(file, buf, size, &nfsd4_grace); } |
3dd98a3bc knfsd: clean up n... |
985 986 987 |
extern char *nfs4_recoverydir(void); static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) |
0964a3d3f [PATCH] knfsd: nf... |
988 989 990 991 |
{ char *mesg = buf; char *recdir; int len, status; |
3dd98a3bc knfsd: clean up n... |
992 993 994 995 996 997 998 |
if (size > 0) { if (nfsd_serv) return -EBUSY; if (size > PATH_MAX || buf[size-1] != ' ') return -EINVAL; buf[size-1] = 0; |
0964a3d3f [PATCH] knfsd: nf... |
999 |
|
3dd98a3bc knfsd: clean up n... |
1000 1001 1002 1003 |
recdir = mesg; len = qword_get(&mesg, recdir, size); if (len <= 0) return -EINVAL; |
0964a3d3f [PATCH] knfsd: nf... |
1004 |
|
3dd98a3bc knfsd: clean up n... |
1005 |
status = nfs4_reset_recoverydir(recdir); |
690499610 gcc-4.6: nfsd: fi... |
1006 1007 |
if (status) return status; |
3dd98a3bc knfsd: clean up n... |
1008 |
} |
3d72ab8fd NFSD: Stricter bu... |
1009 1010 1011 1012 |
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s ", nfs4_recoverydir()); |
0964a3d3f [PATCH] knfsd: nf... |
1013 |
} |
3dd98a3bc knfsd: clean up n... |
1014 |
|
262a09823 NFSD: Add documen... |
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 |
/** * write_recoverydir - Set or report the pathname of the recovery directory * * Input: * buf: ignored * size: zero * * OR * * Input: * buf: C string containing the pathname * of the directory on a local file * system containing permanent NFSv4 * recovery data * size: non-zero length of C string in @buf * Output: * On success: passed-in buffer filled with ' '-terminated C string * containing the current recovery pathname setting; * return code is the size in bytes of the string * On error: return code is zero or a negative errno value */ |
3dd98a3bc knfsd: clean up n... |
1037 1038 1039 1040 1041 1042 1043 1044 1045 |
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) { ssize_t rv; mutex_lock(&nfsd_mutex); rv = __write_recoverydir(file, buf, size); mutex_unlock(&nfsd_mutex); return rv; } |
70c3b76c2 [PATCH] knfsd: Al... |
1046 |
#endif |
0964a3d3f [PATCH] knfsd: nf... |
1047 |
|
1da177e4c Linux-2.6.12-rc2 |
1048 1049 1050 1051 1052 1053 1054 1055 |
/*----------------------------------------------------------------------------*/ /* * populating the filesystem. */ static int nfsd_fill_super(struct super_block * sb, void * data, int silent) { static struct tree_descr nfsd_files[] = { |
1da177e4c Linux-2.6.12-rc2 |
1056 |
[NFSD_List] = {"exports", &exports_operations, S_IRUGO}, |
e8e8753f7 nfsd: new interfa... |
1057 1058 |
[NFSD_Export_features] = {"export_features", &export_features_operations, S_IRUGO}, |
4373ea84c lockd: unlock loc... |
1059 1060 |
[NFSD_FO_UnlockIP] = {"unlock_ip", &transaction_ops, S_IWUSR|S_IRUSR}, |
17efa372c lockd: unlock loc... |
1061 1062 |
[NFSD_FO_UnlockFS] = {"unlock_filesystem", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 |
[NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
eed2965af [PATCH] knfsd: al... |
1065 |
[NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
03cf6c9f4 knfsd: add file t... |
1066 |
[NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, |
70c3b76c2 [PATCH] knfsd: Al... |
1067 |
[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59e [PATCH] knfsd: de... |
1068 |
[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
596bbe53e [PATCH] knfsd: Al... |
1069 |
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, |
b084f598d nfsd: fix depende... |
1070 |
#if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a26 nfsd: add proc fi... |
1071 |
[NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, |
b084f598d nfsd: fix depende... |
1072 |
#endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
1da177e4c Linux-2.6.12-rc2 |
1073 1074 |
#ifdef CONFIG_NFSD_V4 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
efc4bb4fd nfsd4: allow sett... |
1075 |
[NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
0964a3d3f [PATCH] knfsd: nf... |
1076 |
[NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4c Linux-2.6.12-rc2 |
1077 1078 1079 1080 1081 |
#endif /* last one */ {""} }; return simple_fill_super(sb, 0x6e667364, nfsd_files); } |
fc14f2fef convert get_sb_si... |
1082 1083 |
static struct dentry *nfsd_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) |
1da177e4c Linux-2.6.12-rc2 |
1084 |
{ |
fc14f2fef convert get_sb_si... |
1085 |
return mount_single(fs_type, flags, data, nfsd_fill_super); |
1da177e4c Linux-2.6.12-rc2 |
1086 1087 1088 1089 1090 |
} static struct file_system_type nfsd_fs_type = { .owner = THIS_MODULE, .name = "nfsd", |
fc14f2fef convert get_sb_si... |
1091 |
.mount = nfsd_mount, |
1da177e4c Linux-2.6.12-rc2 |
1092 1093 |
.kill_sb = kill_litter_super, }; |
e331f606a nfsd: fail init o... |
1094 1095 1096 1097 1098 1099 1100 1101 |
#ifdef CONFIG_PROC_FS static int create_proc_exports_entry(void) { struct proc_dir_entry *entry; entry = proc_mkdir("fs/nfs", NULL); if (!entry) return -ENOMEM; |
9ef2db263 nfsd: use proc_cr... |
1102 |
entry = proc_create("exports", 0, entry, &exports_operations); |
e331f606a nfsd: fail init o... |
1103 1104 |
if (!entry) return -ENOMEM; |
e331f606a nfsd: fail init o... |
1105 1106 1107 1108 1109 1110 1111 1112 |
return 0; } #else /* CONFIG_PROC_FS */ static int create_proc_exports_entry(void) { return 0; } #endif |
1da177e4c Linux-2.6.12-rc2 |
1113 1114 1115 1116 1117 |
static int __init init_nfsd(void) { int retval; printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de). "); |
720833960 NFSD: Call nfsd4_... |
1118 |
retval = nfsd4_init_slabs(); |
e8ff2a845 knfsd: move nfsv4... |
1119 1120 |
if (retval) return retval; |
720833960 NFSD: Call nfsd4_... |
1121 |
nfs4_state_init(); |
65178db42 NFSD: Added fault... |
1122 1123 1124 |
retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ if (retval) goto out_free_slabs; |
1da177e4c Linux-2.6.12-rc2 |
1125 |
nfsd_stat_init(); /* Statistics */ |
d5c3428b2 nfsd: fail module... |
1126 1127 1128 |
retval = nfsd_reply_cache_init(); if (retval) goto out_free_stat; |
dbf847ecb knfsd: allow cach... |
1129 1130 1131 |
retval = nfsd_export_init(); if (retval) goto out_free_cache; |
1da177e4c Linux-2.6.12-rc2 |
1132 |
nfsd_lockd_init(); /* lockd->nfsd callbacks */ |
dbf847ecb knfsd: allow cach... |
1133 1134 1135 |
retval = nfsd_idmap_init(); if (retval) goto out_free_lockd; |
e331f606a nfsd: fail init o... |
1136 1137 1138 |
retval = create_proc_exports_entry(); if (retval) goto out_free_idmap; |
1da177e4c Linux-2.6.12-rc2 |
1139 |
retval = register_filesystem(&nfsd_fs_type); |
26808d3f1 nfsd: cleanup nfs... |
1140 1141 1142 1143 |
if (retval) goto out_free_all; return 0; out_free_all: |
26808d3f1 nfsd: cleanup nfs... |
1144 1145 |
remove_proc_entry("fs/nfs/exports", NULL); remove_proc_entry("fs/nfs", NULL); |
e331f606a nfsd: fail init o... |
1146 |
out_free_idmap: |
dbf847ecb knfsd: allow cach... |
1147 1148 |
nfsd_idmap_shutdown(); out_free_lockd: |
26808d3f1 nfsd: cleanup nfs... |
1149 |
nfsd_lockd_shutdown(); |
e331f606a nfsd: fail init o... |
1150 |
nfsd_export_shutdown(); |
dbf847ecb knfsd: allow cach... |
1151 |
out_free_cache: |
e331f606a nfsd: fail init o... |
1152 |
nfsd_reply_cache_shutdown(); |
d5c3428b2 nfsd: fail module... |
1153 1154 |
out_free_stat: nfsd_stat_shutdown(); |
65178db42 NFSD: Added fault... |
1155 1156 |
nfsd_fault_inject_cleanup(); out_free_slabs: |
26808d3f1 nfsd: cleanup nfs... |
1157 |
nfsd4_free_slabs(); |
1da177e4c Linux-2.6.12-rc2 |
1158 1159 1160 1161 1162 1163 |
return retval; } static void __exit exit_nfsd(void) { nfsd_export_shutdown(); |
d5c3428b2 nfsd: fail module... |
1164 |
nfsd_reply_cache_shutdown(); |
1da177e4c Linux-2.6.12-rc2 |
1165 1166 1167 1168 |
remove_proc_entry("fs/nfs/exports", NULL); remove_proc_entry("fs/nfs", NULL); nfsd_stat_shutdown(); nfsd_lockd_shutdown(); |
1da177e4c Linux-2.6.12-rc2 |
1169 |
nfsd_idmap_shutdown(); |
e8ff2a845 knfsd: move nfsv4... |
1170 |
nfsd4_free_slabs(); |
65178db42 NFSD: Added fault... |
1171 |
nfsd_fault_inject_cleanup(); |
1da177e4c Linux-2.6.12-rc2 |
1172 1173 1174 1175 1176 1177 1178 |
unregister_filesystem(&nfsd_fs_type); } MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); MODULE_LICENSE("GPL"); module_init(init_nfsd) module_exit(exit_nfsd) |