/*
   *   fs/cifs_debug.c
   *

   *   Copyright (C) International Business Machines  Corp., 2000,2005

   *
   *   Modified by Steve French (sfrench@us.ibm.com)
   *
   *   This program is free software;  you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by

   *   the Free Software Foundation; either version 2 of the License, or

   *   (at your option) any later version.

   *

   *   This program 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 General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License

   *   along with this program;  if not, write to the Free Software

   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
   */
  #include <linux/fs.h>
  #include <linux/string.h>
  #include <linux/ctype.h>
  #include <linux/module.h>
  #include <linux/proc_fs.h>
  #include <asm/uaccess.h>
  #include "cifspdu.h"
  #include "cifsglob.h"
  #include "cifsproto.h"
  #include "cifs_debug.h"

  #include "cifsfs.h"

  
  void
  cifs_dump_mem(char *label, void *data, int length)
  {
  	int i, j;
  	int *intptr = data;
  	char *charptr = data;
  	char buf[10], line[80];

  	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p
  ",

  		label, length, data);
  	for (i = 0; i < length; i += 16) {
  		line[0] = 0;
  		for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
  			sprintf(buf, " %08x", intptr[i / 4 + j]);
  			strcat(line, buf);
  		}
  		buf[0] = ' ';
  		buf[2] = 0;
  		for (j = 0; (j < 16) && (i + j < length); j++) {
  			buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
  			strcat(line, buf);
  		}
  		printk(KERN_DEBUG "%s
  ", line);
  	}
  }

  #ifdef CONFIG_CIFS_DEBUG2

  void cifs_dump_detail(struct smb_hdr *smb)

  {

  	cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",

  		  smb->Command, smb->Status.CifsError,
  		  smb->Flags, smb->Flags2, smb->Mid, smb->Pid));

  	cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));

  }

  void cifs_dump_mids(struct TCP_Server_Info *server)

  {
  	struct list_head *tmp;

  	struct mid_q_entry *mid_entry;

  	if (server == NULL)

  		return;

  	cERROR(1, ("Dump pending requests:"));

  	spin_lock(&GlobalMid_Lock);
  	list_for_each(tmp, &server->pending_mid_q) {
  		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);

  		if (mid_entry) {
  			cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",

  				mid_entry->midState,
  				(int)mid_entry->command,
  				mid_entry->pid,
  				mid_entry->tsk,
  				mid_entry->mid));
  #ifdef CONFIG_CIFS_STATS2

  			cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",

  				mid_entry->largeBuf,
  				mid_entry->resp_buf,
  				mid_entry->when_received,
  				jiffies));
  #endif /* STATS2 */

  			cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,

  				  mid_entry->multiEnd));

  			if (mid_entry->resp_buf) {

  				cifs_dump_detail(mid_entry->resp_buf);
  				cifs_dump_mem("existing buf: ",
  					mid_entry->resp_buf,
  					62 /* fixme */);
  			}

  		}
  	}
  	spin_unlock(&GlobalMid_Lock);
  }
  #endif /* CONFIG_CIFS_DEBUG2 */

  #ifdef CONFIG_PROC_FS
  static int
  cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
  		     int count, int *eof, void *data)
  {
  	struct list_head *tmp;
  	struct list_head *tmp1;

  	struct mid_q_entry *mid_entry;

  	struct cifsSesInfo *ses;
  	struct cifsTconInfo *tcon;
  	int i;
  	int length = 0;

  	char *original_buf = buf;

  
  	*beginBuffer = buf + offset;

  	length =
  	    sprintf(buf,
  		    "Display Internal CIFS Data Structures for Debugging
  "
  		    "---------------------------------------------------
  ");
  	buf += length;

  	length = sprintf(buf, "CIFS Version %s
  ", CIFS_VERSION);

  	buf += length;

  	length = sprintf(buf,
  		"Active VFS Requests: %d
  ", GlobalTotalActiveXid);

  	buf += length;

  	length = sprintf(buf, "Servers:");

  	buf += length;
  
  	i = 0;
  	read_lock(&GlobalSMBSeslock);
  	list_for_each(tmp, &GlobalSMBSessionList) {
  		i++;
  		ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);

  		if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||

  		   (ses->serverNOS == NULL)) {

  			buf += sprintf(buf, "
  entry for %s not fully "
  					"displayed
  \t", ses->serverName);

  		} else {
  			length =
  			    sprintf(buf,

  				    "
  %d) Name: %s  Domain: %s Mounts: %d OS:"
  				    " %s  
  \tNOS: %s\tCapability: 0x%x
  \tSMB"
  				    " session status: %d\t",

  				i, ses->serverName, ses->serverDomain,
  				atomic_read(&ses->inUse),
  				ses->serverOS, ses->serverNOS,

  				ses->capabilities, ses->status);

  			buf += length;
  		}

  		if (ses->server) {
  			buf += sprintf(buf, "TCP status: %d
  \tLocal Users To "
  				    "Server: %d SecMode: 0x%x Req On Wire: %d",

  				ses->server->tcpStatus,
  				atomic_read(&ses->server->socketUseCount),
  				ses->server->secMode,
  				atomic_read(&ses->server->inFlight));

  
  #ifdef CONFIG_CIFS_STATS2

  			buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",

  				atomic_read(&ses->server->inSend),

  				atomic_read(&ses->server->num_waiters));
  #endif

  			length = sprintf(buf, "
  MIDs:
  ");

  			buf += length;
  
  			spin_lock(&GlobalMid_Lock);
  			list_for_each(tmp1, &ses->server->pending_mid_q) {
  				mid_entry = list_entry(tmp1, struct
  					mid_q_entry,
  					qhead);

  				if (mid_entry) {
  					length = sprintf(buf,
  							"State: %d com: %d pid:"
  							" %d tsk: %p mid %d
  ",
  							mid_entry->midState,
  							(int)mid_entry->command,
  							mid_entry->pid,
  							mid_entry->tsk,
  							mid_entry->mid);

  					buf += length;
  				}
  			}

  			spin_unlock(&GlobalMid_Lock);

  		}
  
  	}
  	read_unlock(&GlobalSMBSeslock);
  	sprintf(buf, "
  ");
  	buf++;

  	length = sprintf(buf, "Shares:");

  	buf += length;
  
  	i = 0;
  	read_lock(&GlobalSMBSeslock);
  	list_for_each(tmp, &GlobalTreeConnectionList) {
  		__u32 dev_type;
  		i++;
  		tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
  		dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
  		length =
  		    sprintf(buf,

  			    "
  %d) %s Uses: %d Type: %s DevInfo: 0x%x "
  			    "Attributes: 0x%x
  PathComponentMax: %d Status: %d",

  			    i, tcon->treeName,
  			    atomic_read(&tcon->useCount),
  			    tcon->nativeFileSystem,
  			    le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
  			    le32_to_cpu(tcon->fsAttrInfo.Attributes),
  			    le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
  			    tcon->tidStatus);

  		buf += length;

  		if (dev_type == FILE_DEVICE_DISK)
  			length = sprintf(buf, " type: DISK ");
  		else if (dev_type == FILE_DEVICE_CD_ROM)
  			length = sprintf(buf, " type: CDROM ");
  		else
  			length =
  			    sprintf(buf, " type: %d ", dev_type);
  		buf += length;

  		if (tcon->tidStatus == CifsNeedReconnect) {

  			buf += sprintf(buf, "\tDISCONNECTED ");
  			length += 14;
  		}
  	}
  	read_unlock(&GlobalSMBSeslock);
  
  	length = sprintf(buf, "
  ");
  	buf += length;
  
  	/* BB add code to dump additional info such as TCP session info now */
  	/* Now calculate total size of returned data */
  	length = buf - original_buf;

  	if (offset + count >= length)

  		*eof = 1;

  	if (length < offset) {

  		*eof = 1;
  		return 0;
  	} else {
  		length = length - offset;
  	}
  	if (length > count)
  		length = count;
  
  	return length;
  }
  
  #ifdef CONFIG_CIFS_STATS

  
  static int
  cifs_stats_write(struct file *file, const char __user *buffer,

  		 unsigned long count, void *data)

  {

  	char c;
  	int rc;

  	struct list_head *tmp;
  	struct cifsTconInfo *tcon;

  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;

  	if (c == '1' || c == 'y' || c == 'Y' || c == '0') {

  		read_lock(&GlobalSMBSeslock);

  #ifdef CONFIG_CIFS_STATS2
  		atomic_set(&totBufAllocCount, 0);
  		atomic_set(&totSmBufAllocCount, 0);
  #endif /* CONFIG_CIFS_STATS2 */

  		list_for_each(tmp, &GlobalTreeConnectionList) {
  			tcon = list_entry(tmp, struct cifsTconInfo,
  					cifsConnectionList);
  			atomic_set(&tcon->num_smbs_sent, 0);
  			atomic_set(&tcon->num_writes, 0);
  			atomic_set(&tcon->num_reads, 0);
  			atomic_set(&tcon->num_oplock_brks, 0);
  			atomic_set(&tcon->num_opens, 0);
  			atomic_set(&tcon->num_closes, 0);
  			atomic_set(&tcon->num_deletes, 0);
  			atomic_set(&tcon->num_mkdirs, 0);
  			atomic_set(&tcon->num_rmdirs, 0);
  			atomic_set(&tcon->num_renames, 0);
  			atomic_set(&tcon->num_t2renames, 0);
  			atomic_set(&tcon->num_ffirst, 0);
  			atomic_set(&tcon->num_fnext, 0);
  			atomic_set(&tcon->num_fclose, 0);
  			atomic_set(&tcon->num_hardlinks, 0);
  			atomic_set(&tcon->num_symlinks, 0);
  			atomic_set(&tcon->num_locks, 0);
  		}
  		read_unlock(&GlobalSMBSeslock);
  	}

  	return count;

  }

  static int
  cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
  		  int count, int *eof, void *data)
  {

  	int item_length, i, length;

  	struct list_head *tmp;
  	struct cifsTconInfo *tcon;
  
  	*beginBuffer = buf + offset;
  
  	length = sprintf(buf,
  			"Resources in use
  CIFS Session: %d
  ",
  			sesInfoAllocCount.counter);
  	buf += length;

  	item_length =
  		sprintf(buf, "Share (unique mount targets): %d
  ",

  			tconInfoAllocCount.counter);
  	length += item_length;

  	buf += item_length;
  	item_length =
  		sprintf(buf, "SMB Request/Response Buffer: %d Pool size: %d
  ",

  			bufAllocCount.counter,
  			cifs_min_rcv + tcpSesAllocCount.counter);

  	length += item_length;
  	buf += item_length;

  	item_length =
  		sprintf(buf, "SMB Small Req/Resp Buffer: %d Pool size: %d
  ",
  			smBufAllocCount.counter, cifs_min_small);

  	length += item_length;
  	buf += item_length;

  #ifdef CONFIG_CIFS_STATS2

  	item_length = sprintf(buf, "Total Large %d Small %d Allocations
  ",

  				atomic_read(&totBufAllocCount),

  				atomic_read(&totSmBufAllocCount));

  	length += item_length;
  	buf += item_length;
  #endif /* CONFIG_CIFS_STATS2 */

  	item_length =
  		sprintf(buf, "Operations (MIDs): %d
  ",

  			midCount.counter);
  	length += item_length;
  	buf += item_length;
  	item_length = sprintf(buf,
  		"
  %d session %d share reconnects
  ",

  		tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);

  	length += item_length;
  	buf += item_length;
  
  	item_length = sprintf(buf,
  		"Total vfs operations: %d maximum at one time: %d
  ",

  		GlobalCurrentXid, GlobalMaxActiveXid);

  	length += item_length;
  	buf += item_length;
  
  	i = 0;
  	read_lock(&GlobalSMBSeslock);
  	list_for_each(tmp, &GlobalTreeConnectionList) {
  		i++;
  		tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);

  		item_length = sprintf(buf, "
  %d) %s", i, tcon->treeName);

  		buf += item_length;
  		length += item_length;

  		if (tcon->tidStatus == CifsNeedReconnect) {

  			buf += sprintf(buf, "\tDISCONNECTED ");
  			length += 14;
  		}

  		item_length = sprintf(buf, "
  SMBs: %d Oplock Breaks: %d",

  			atomic_read(&tcon->num_smbs_sent),
  			atomic_read(&tcon->num_oplock_brks));
  		buf += item_length;
  		length += item_length;

  		item_length = sprintf(buf, "
  Reads:  %d Bytes: %lld",

  			atomic_read(&tcon->num_reads),
  			(long long)(tcon->bytes_read));
  		buf += item_length;
  		length += item_length;

  		item_length = sprintf(buf, "
  Writes: %d Bytes: %lld",

  			atomic_read(&tcon->num_writes),
  			(long long)(tcon->bytes_written));

  		buf += item_length;
  		length += item_length;
  		item_length = sprintf(buf,

  			"
  Locks: %d HardLinks: %d Symlinks: %d",

  			atomic_read(&tcon->num_locks),

  			atomic_read(&tcon->num_hardlinks),
  			atomic_read(&tcon->num_symlinks));

  		buf += item_length;
  		length += item_length;

  
  		item_length = sprintf(buf, "
  Opens: %d Closes: %d Deletes: %d",
  			atomic_read(&tcon->num_opens),
  			atomic_read(&tcon->num_closes),
  			atomic_read(&tcon->num_deletes));

  		buf += item_length;
  		length += item_length;

  		item_length = sprintf(buf, "
  Mkdirs: %d Rmdirs: %d",

  			atomic_read(&tcon->num_mkdirs),
  			atomic_read(&tcon->num_rmdirs));
  		buf += item_length;
  		length += item_length;

  		item_length = sprintf(buf, "
  Renames: %d T2 Renames %d",

  			atomic_read(&tcon->num_renames),
  			atomic_read(&tcon->num_t2renames));
  		buf += item_length;
  		length += item_length;

  		item_length = sprintf(buf, "
  FindFirst: %d FNext %d FClose %d",

  			atomic_read(&tcon->num_ffirst),
  			atomic_read(&tcon->num_fnext),
  			atomic_read(&tcon->num_fclose));
  		buf += item_length;
  		length += item_length;

  	}
  	read_unlock(&GlobalSMBSeslock);

  	buf += sprintf(buf, "
  ");

  	length++;

  	if (offset + count >= length)

  		*eof = 1;

  	if (length < offset) {

  		*eof = 1;
  		return 0;
  	} else {
  		length = length - offset;
  	}
  	if (length > count)
  		length = count;

  	return length;
  }
  #endif
  
  static struct proc_dir_entry *proc_fs_cifs;
  read_proc_t cifs_txanchor_read;
  static read_proc_t cifsFYI_read;
  static write_proc_t cifsFYI_write;
  static read_proc_t oplockEnabled_read;
  static write_proc_t oplockEnabled_write;
  static read_proc_t lookupFlag_read;
  static write_proc_t lookupFlag_write;
  static read_proc_t traceSMB_read;
  static write_proc_t traceSMB_write;
  static read_proc_t multiuser_mount_read;
  static write_proc_t multiuser_mount_write;

  static read_proc_t security_flags_read;
  static write_proc_t security_flags_write;

  /* static read_proc_t ntlmv2_enabled_read;

  static write_proc_t ntlmv2_enabled_write;
  static read_proc_t packet_signing_enabled_read;

  static write_proc_t packet_signing_enabled_write;*/

  static read_proc_t experimEnabled_read;
  static write_proc_t experimEnabled_write;

  static read_proc_t linuxExtensionsEnabled_read;
  static write_proc_t linuxExtensionsEnabled_write;
  
  void
  cifs_proc_init(void)
  {
  	struct proc_dir_entry *pde;
  
  	proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
  	if (proc_fs_cifs == NULL)
  		return;
  
  	proc_fs_cifs->owner = THIS_MODULE;
  	create_proc_read_entry("DebugData", 0, proc_fs_cifs,
  				cifs_debug_data_read, NULL);
  
  #ifdef CONFIG_CIFS_STATS

  	pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,

  				cifs_stats_read, NULL);

  	if (pde)
  		pde->write_proc = cifs_stats_write;

  #endif
  	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
  				cifsFYI_read, NULL);
  	if (pde)
  		pde->write_proc = cifsFYI_write;
  
  	pde =
  	    create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
  				traceSMB_read, NULL);
  	if (pde)
  		pde->write_proc = traceSMB_write;
  
  	pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
  				oplockEnabled_read, NULL);
  	if (pde)
  		pde->write_proc = oplockEnabled_write;

  	pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,

  				experimEnabled_read, NULL);

  	if (pde)

  		pde->write_proc = experimEnabled_write;

  
  	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
  				linuxExtensionsEnabled_read, NULL);
  	if (pde)
  		pde->write_proc = linuxExtensionsEnabled_write;
  
  	pde =
  	    create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
  				multiuser_mount_read, NULL);
  	if (pde)
  		pde->write_proc = multiuser_mount_write;
  
  	pde =

  	    create_proc_read_entry("SecurityFlags", 0, proc_fs_cifs,

  				security_flags_read, NULL);

  	if (pde)

  		pde->write_proc = security_flags_write;

  
  	pde =
  	create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
  				lookupFlag_read, NULL);
  	if (pde)
  		pde->write_proc = lookupFlag_write;

  /*	pde =

  	    create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
  				ntlmv2_enabled_read, NULL);
  	if (pde)
  		pde->write_proc = ntlmv2_enabled_write;
  
  	pde =
  	    create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
  				packet_signing_enabled_read, NULL);
  	if (pde)

  		pde->write_proc = packet_signing_enabled_write;*/

  }
  
  void
  cifs_proc_clean(void)
  {
  	if (proc_fs_cifs == NULL)
  		return;
  
  	remove_proc_entry("DebugData", proc_fs_cifs);
  	remove_proc_entry("cifsFYI", proc_fs_cifs);
  	remove_proc_entry("traceSMB", proc_fs_cifs);
  #ifdef CONFIG_CIFS_STATS
  	remove_proc_entry("Stats", proc_fs_cifs);
  #endif
  	remove_proc_entry("MultiuserMount", proc_fs_cifs);
  	remove_proc_entry("OplockEnabled", proc_fs_cifs);

  /*	remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */

  	remove_proc_entry("SecurityFlags", proc_fs_cifs);
  /*	remove_proc_entry("PacketSigningEnabled", proc_fs_cifs); */
  	remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
  	remove_proc_entry("Experimental", proc_fs_cifs);
  	remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);

  	remove_proc_entry("cifs", proc_root_fs);
  }
  
  static int
  cifsFYI_read(char *page, char **start, off_t off, int count,
  	     int *eof, void *data)
  {
  	int len;
  
  	len = sprintf(page, "%d
  ", cifsFYI);
  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int
  cifsFYI_write(struct file *file, const char __user *buffer,
  	      unsigned long count, void *data)
  {
  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		cifsFYI = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		cifsFYI = 1;

  	else if ((c > '1') && (c <= '9'))

  		cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */

  
  	return count;
  }
  
  static int
  oplockEnabled_read(char *page, char **start, off_t off,
  		   int count, int *eof, void *data)
  {
  	int len;
  
  	len = sprintf(page, "%d
  ", oplockEnabled);
  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int
  oplockEnabled_write(struct file *file, const char __user *buffer,
  		    unsigned long count, void *data)
  {
  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		oplockEnabled = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		oplockEnabled = 1;
  
  	return count;
  }
  
  static int

  experimEnabled_read(char *page, char **start, off_t off,

  		    int count, int *eof, void *data)

  {

  	int len;

  	len = sprintf(page, "%d
  ", experimEnabled);

  	len -= off;
  	*start = page + off;

  	if (len > count)
  		len = count;
  	else
  		*eof = 1;

  	if (len < 0)
  		len = 0;

  	return len;

  }
  static int

  experimEnabled_write(struct file *file, const char __user *buffer,

  		     unsigned long count, void *data)

  {

  	char c;
  	int rc;

  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		experimEnabled = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		experimEnabled = 1;
  	else if (c == '2')
  		experimEnabled = 2;

  	return count;

  }
  
  static int
  linuxExtensionsEnabled_read(char *page, char **start, off_t off,

  			    int count, int *eof, void *data)

  {

  	int len;

  	len = sprintf(page, "%d
  ", linuxExtEnabled);
  	len -= off;
  	*start = page + off;

  	if (len > count)
  		len = count;
  	else
  		*eof = 1;

  	if (len < 0)
  		len = 0;

  	return len;

  }
  static int
  linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,

  			     unsigned long count, void *data)

  {

  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		linuxExtEnabled = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		linuxExtEnabled = 1;
  
  	return count;

  }
  
  
  static int
  lookupFlag_read(char *page, char **start, off_t off,

  		int count, int *eof, void *data)

  {
  	int len;
  
  	len = sprintf(page, "%d
  ", lookupCacheEnabled);
  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int
  lookupFlag_write(struct file *file, const char __user *buffer,
  		    unsigned long count, void *data)
  {
  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		lookupCacheEnabled = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		lookupCacheEnabled = 1;
  
  	return count;
  }
  static int
  traceSMB_read(char *page, char **start, off_t off, int count,
  	      int *eof, void *data)
  {
  	int len;
  
  	len = sprintf(page, "%d
  ", traceSMB);
  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int
  traceSMB_write(struct file *file, const char __user *buffer,
  	       unsigned long count, void *data)
  {
  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		traceSMB = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		traceSMB = 1;
  
  	return count;
  }
  
  static int
  multiuser_mount_read(char *page, char **start, off_t off,
  		     int count, int *eof, void *data)
  {
  	int len;
  
  	len = sprintf(page, "%d
  ", multiuser_mount);
  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int
  multiuser_mount_write(struct file *file, const char __user *buffer,
  		      unsigned long count, void *data)
  {
  	char c;
  	int rc;
  
  	rc = get_user(c, buffer);
  	if (rc)
  		return rc;
  	if (c == '0' || c == 'n' || c == 'N')
  		multiuser_mount = 0;
  	else if (c == '1' || c == 'y' || c == 'Y')
  		multiuser_mount = 1;
  
  	return count;
  }
  
  static int

  security_flags_read(char *page, char **start, off_t off,

  		       int count, int *eof, void *data)
  {
  	int len;

  	len = sprintf(page, "0x%x
  ", extended_security);

  
  	len -= off;
  	*start = page + off;
  
  	if (len > count)
  		len = count;
  	else
  		*eof = 1;
  
  	if (len < 0)
  		len = 0;
  
  	return len;
  }
  static int

  security_flags_write(struct file *file, const char __user *buffer,

  			unsigned long count, void *data)
  {

  	unsigned int flags;
  	char flags_string[12];

  	char c;

  	if ((count < 1) || (count > 11))

  		return -EINVAL;

  	memset(flags_string, 0, 12);

  	if (copy_from_user(flags_string, buffer, count))

  		return -EFAULT;

  	if (count < 3) {

  		/* single char or single char followed by null */
  		c = flags_string[0];
  		if (c == '0' || c == 'n' || c == 'N')
  			extended_security = CIFSSEC_DEF; /* default */
  		else if (c == '1' || c == 'y' || c == 'Y')
  			extended_security = CIFSSEC_MAX;
  		return count;
  	}
  	/* else we have a number */
  
  	flags = simple_strtoul(flags_string, NULL, 0);

  	cFYI(1, ("sec flags 0x%x", flags));

  	if (flags <= 0)  {
  		cERROR(1, ("invalid security flags %s", flags_string));

  		return -EINVAL;
  	}

  	if (flags & ~CIFSSEC_MASK) {
  		cERROR(1, ("attempt to set unsupported security flags 0x%x",

  			flags & ~CIFSSEC_MASK));
  		return -EINVAL;
  	}
  	/* flags look ok - update the global security flags for cifs module */
  	extended_security = flags;

  	if (extended_security & CIFSSEC_MUST_SIGN) {
  		/* requiring signing implies signing is allowed */
  		extended_security |= CIFSSEC_MAY_SIGN;
  		cFYI(1, ("packet signing now required"));
  	} else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
  		cFYI(1, ("packet signing disabled"));
  	}
  	/* BB should we turn on MAY flags for other MUST options? */

  	return count;
  }

  #endif