fs/cifs/cifs_debug.c

   1 /*
   2  *   fs/cifs_debug.c
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2000,2005
   5  *
   6  *   Modified by Steve French (sfrench@us.ibm.com)
   7  *
   8  *   This program is free software;  you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16  *   the GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program;  if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  */
  22 #include <linux/fs.h>
  23 #include <linux/string.h>
  24 #include <linux/ctype.h>
  25 #include <linux/module.h>
  26 #include <linux/proc_fs.h>
  27 #include <asm/uaccess.h>
  28 #include "cifspdu.h"
  29 #include "cifsglob.h"
  30 #include "cifsproto.h"
  31 #include "cifs_debug.h"
  32 #include "cifsfs.h"
  33
  34 void
  35 cifs_dump_mem(char *label, void *data, int length)
  36 {
  37         int i, j;
  38         int *intptr = data;
  39         char *charptr = data;
  40         char buf[10], line[80];
  41
  42         printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
  43                 label, length, data);
  44         for (i = 0; i < length; i += 16) {
  45                 line[0] = 0;
  46                 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
  47                         sprintf(buf, " %08x", intptr[i / 4 + j]);
  48                         strcat(line, buf);
  49                 }
  50                 buf[0] = ' ';
  51                 buf[2] = 0;
  52                 for (j = 0; (j < 16) && (i + j < length); j++) {
  53                         buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
  54                         strcat(line, buf);
  55                 }
  56                 printk(KERN_DEBUG "%s\n", line);
  57         }
  58 }
  59
  60 #ifdef CONFIG_CIFS_DEBUG2
  61 void cifs_dump_detail(struct smb_hdr *smb)
  62 {
  63         cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
  64                   smb->Command, smb->Status.CifsError,
  65                   smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
  66         cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
  67 }
  68
  69
  70 void cifs_dump_mids(struct TCP_Server_Info *server)
  71 {
  72         struct list_head *tmp;
  73         struct mid_q_entry *mid_entry;
  74
  75         if (server == NULL)
  76                 return;
  77
  78         cERROR(1, ("Dump pending requests:"));
  79         spin_lock(&GlobalMid_Lock);
  80         list_for_each(tmp, &server->pending_mid_q) {
  81                 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
  82                 cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
  83                         mid_entry->midState,
  84                         (int)mid_entry->command,
  85                         mid_entry->pid,
  86                         mid_entry->tsk,
  87                         mid_entry->mid));
  88 #ifdef CONFIG_CIFS_STATS2
  89                 cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
  90                         mid_entry->largeBuf,
  91                         mid_entry->resp_buf,
  92                         mid_entry->when_received,
  93                         jiffies));
  94 #endif /* STATS2 */
  95                 cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
  96                           mid_entry->multiEnd));
  97                 if (mid_entry->resp_buf) {
  98                         cifs_dump_detail(mid_entry->resp_buf);
  99                         cifs_dump_mem("existing buf: ",
 100                                 mid_entry->resp_buf, 62);
 101                 }
 102         }
 103         spin_unlock(&GlobalMid_Lock);
 104 }
 105 #endif /* CONFIG_CIFS_DEBUG2 */
 106
 107 #ifdef CONFIG_PROC_FS
 108 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 109 {
 110         struct list_head *tmp, *tmp2, *tmp3;
 111         struct mid_q_entry *mid_entry;
 112         struct TCP_Server_Info *server;
 113         struct cifsSesInfo *ses;
 114         struct cifsTconInfo *tcon;
 115         int i;
 116
 117         seq_puts(m,
 118                     "Display Internal CIFS Data Structures for Debugging\n"
 119                     "---------------------------------------------------\n");
 120         seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 121         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 122         seq_printf(m, "Servers:");
 123
 124         i = 0;
 125         read_lock(&cifs_tcp_ses_lock);
 126         list_for_each(tmp, &cifs_tcp_ses_list) {
 127                 server = list_entry(tmp, struct TCP_Server_Info,
 128                                     tcp_ses_list);
 129                 i++;
 130                 list_for_each(tmp2, &server->smb_ses_list) {
 131                         ses = list_entry(tmp2, struct cifsSesInfo,
 132                                          smb_ses_list);
 133                         if ((ses->serverDomain == NULL) ||
 134                                 (ses->serverOS == NULL) ||
 135                                 (ses->serverNOS == NULL)) {
 136                                 seq_printf(m, "\nentry for %s not fully "
 137                                            "displayed\n\t", ses->serverName);
 138                         } else {
 139                                 seq_printf(m,
 140                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS:"
 141                                     " %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 142                                     " session status: %d\t",
 143                                 i, ses->serverName, ses->serverDomain,
 144                                 ses->ses_count, ses->serverOS, ses->serverNOS,
 145                                 ses->capabilities, ses->status);
 146                         }
 147                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 148                                    "Server: %d SecMode: 0x%x Req On Wire: %d",
 149                                    server->tcpStatus, server->srv_count,
 150                                    server->secMode,
 151                                    atomic_read(&server->inFlight));
 152
 153 #ifdef CONFIG_CIFS_STATS2
 154                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 155                                 atomic_read(&server->inSend),
 156                                 atomic_read(&server->num_waiters));
 157 #endif
 158
 159                         seq_puts(m, "\nMIDs:\n");
 160
 161                         spin_lock(&GlobalMid_Lock);
 162                         list_for_each(tmp3, &server->pending_mid_q) {
 163                                 mid_entry = list_entry(tmp3, struct
 164                                         mid_q_entry,
 165                                         qhead);
 166                                 seq_printf(m, "State: %d com: %d pid:"
 167                                                 " %d tsk: %p mid %d\n",
 168                                                 mid_entry->midState,
 169                                                 (int)mid_entry->command,
 170                                                 mid_entry->pid,
 171                                                 mid_entry->tsk,
 172                                                 mid_entry->mid);
 173                         }
 174                         spin_unlock(&GlobalMid_Lock);
 175                 }
 176         }
 177         read_unlock(&cifs_tcp_ses_lock);
 178         seq_putc(m, '\n');
 179
 180         seq_puts(m, "Shares:");
 181
 182         i = 0;
 183         read_lock(&GlobalSMBSeslock);
 184         list_for_each(tmp, &GlobalTreeConnectionList) {
 185                 __u32 dev_type;
 186                 i++;
 187                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 188                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 189                 seq_printf(m, "\n%d) %s Uses: %d ", i,
 190                                  tcon->treeName, atomic_read(&tcon->useCount));
 191                 if (tcon->nativeFileSystem) {
 192                         seq_printf(m, "Type: %s ",
 193                                          tcon->nativeFileSystem);
 194                 }
 195                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 196                                  "\nPathComponentMax: %d Status: %d",
 197                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 198                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 199                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 200                             tcon->tidStatus);
 201                 if (dev_type == FILE_DEVICE_DISK)
 202                         seq_puts(m, " type: DISK ");
 203                 else if (dev_type == FILE_DEVICE_CD_ROM)
 204                         seq_puts(m, " type: CDROM ");
 205                 else
 206                         seq_printf(m, " type: %d ", dev_type);
 207
 208                 if (tcon->need_reconnect)
 209                         seq_puts(m, "\tDISCONNECTED ");
 210         }
 211         read_unlock(&GlobalSMBSeslock);
 212
 213         seq_putc(m, '\n');
 214
 215         /* BB add code to dump additional info such as TCP session info now */
 216         return 0;
 217 }
 218
 219 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 220 {
 221         return single_open(file, cifs_debug_data_proc_show, NULL);
 222 }
 223
 224 static const struct file_operations cifs_debug_data_proc_fops = {
 225         .owner          = THIS_MODULE,
 226         .open           = cifs_debug_data_proc_open,
 227         .read           = seq_read,
 228         .llseek         = seq_lseek,
 229         .release        = single_release,
 230 };
 231
 232 #ifdef CONFIG_CIFS_STATS
 233 static ssize_t cifs_stats_proc_write(struct file *file,
 234                 const char __user *buffer, size_t count, loff_t *ppos)
 235 {
 236         char c;
 237         int rc;
 238         struct list_head *tmp;
 239         struct cifsTconInfo *tcon;
 240
 241         rc = get_user(c, buffer);
 242         if (rc)
 243                 return rc;
 244
 245         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 246                 read_lock(&GlobalSMBSeslock);
 247 #ifdef CONFIG_CIFS_STATS2
 248                 atomic_set(&totBufAllocCount, 0);
 249                 atomic_set(&totSmBufAllocCount, 0);
 250 #endif /* CONFIG_CIFS_STATS2 */
 251                 list_for_each(tmp, &GlobalTreeConnectionList) {
 252                         tcon = list_entry(tmp, struct cifsTconInfo,
 253                                         cifsConnectionList);
 254                         atomic_set(&tcon->num_smbs_sent, 0);
 255                         atomic_set(&tcon->num_writes, 0);
 256                         atomic_set(&tcon->num_reads, 0);
 257                         atomic_set(&tcon->num_oplock_brks, 0);
 258                         atomic_set(&tcon->num_opens, 0);
 259                         atomic_set(&tcon->num_closes, 0);
 260                         atomic_set(&tcon->num_deletes, 0);
 261                         atomic_set(&tcon->num_mkdirs, 0);
 262                         atomic_set(&tcon->num_rmdirs, 0);
 263                         atomic_set(&tcon->num_renames, 0);
 264                         atomic_set(&tcon->num_t2renames, 0);
 265                         atomic_set(&tcon->num_ffirst, 0);
 266                         atomic_set(&tcon->num_fnext, 0);
 267                         atomic_set(&tcon->num_fclose, 0);
 268                         atomic_set(&tcon->num_hardlinks, 0);
 269                         atomic_set(&tcon->num_symlinks, 0);
 270                         atomic_set(&tcon->num_locks, 0);
 271                 }
 272                 read_unlock(&GlobalSMBSeslock);
 273         }
 274
 275         return count;
 276 }
 277
 278 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 279 {
 280         int i;
 281         struct list_head *tmp;
 282         struct cifsTconInfo *tcon;
 283
 284         seq_printf(m,
 285                         "Resources in use\nCIFS Session: %d\n",
 286                         sesInfoAllocCount.counter);
 287         seq_printf(m, "Share (unique mount targets): %d\n",
 288                         tconInfoAllocCount.counter);
 289         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 290                         bufAllocCount.counter,
 291                         cifs_min_rcv + tcpSesAllocCount.counter);
 292         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 293                         smBufAllocCount.counter, cifs_min_small);
 294 #ifdef CONFIG_CIFS_STATS2
 295         seq_printf(m, "Total Large %d Small %d Allocations\n",
 296                                 atomic_read(&totBufAllocCount),
 297                                 atomic_read(&totSmBufAllocCount));
 298 #endif /* CONFIG_CIFS_STATS2 */
 299
 300         seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
 301         seq_printf(m,
 302                 "\n%d session %d share reconnects\n",
 303                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 304
 305         seq_printf(m,
 306                 "Total vfs operations: %d maximum at one time: %d\n",
 307                 GlobalCurrentXid, GlobalMaxActiveXid);
 308
 309         i = 0;
 310         read_lock(&GlobalSMBSeslock);
 311         list_for_each(tmp, &GlobalTreeConnectionList) {
 312                 i++;
 313                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 314                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 315                 if (tcon->need_reconnect)
 316                         seq_puts(m, "\tDISCONNECTED ");
 317                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 318                         atomic_read(&tcon->num_smbs_sent),
 319                         atomic_read(&tcon->num_oplock_brks));
 320                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 321                         atomic_read(&tcon->num_reads),
 322                         (long long)(tcon->bytes_read));
 323                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 324                         atomic_read(&tcon->num_writes),
 325                         (long long)(tcon->bytes_written));
 326                 seq_printf(m,
 327                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 328                         atomic_read(&tcon->num_locks),
 329                         atomic_read(&tcon->num_hardlinks),
 330                         atomic_read(&tcon->num_symlinks));
 331
 332                 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
 333                         atomic_read(&tcon->num_opens),
 334                         atomic_read(&tcon->num_closes),
 335                         atomic_read(&tcon->num_deletes));
 336                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 337                         atomic_read(&tcon->num_mkdirs),
 338                         atomic_read(&tcon->num_rmdirs));
 339                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 340                         atomic_read(&tcon->num_renames),
 341                         atomic_read(&tcon->num_t2renames));
 342                 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
 343                         atomic_read(&tcon->num_ffirst),
 344                         atomic_read(&tcon->num_fnext),
 345                         atomic_read(&tcon->num_fclose));
 346         }
 347         read_unlock(&GlobalSMBSeslock);
 348
 349         seq_putc(m, '\n');
 350         return 0;
 351 }
 352
 353 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 354 {
 355         return single_open(file, cifs_stats_proc_show, NULL);
 356 }
 357
 358 static const struct file_operations cifs_stats_proc_fops = {
 359         .owner          = THIS_MODULE,
 360         .open           = cifs_stats_proc_open,
 361         .read           = seq_read,
 362         .llseek         = seq_lseek,
 363         .release        = single_release,
 364         .write          = cifs_stats_proc_write,
 365 };
 366 #endif /* STATS */
 367
 368 static struct proc_dir_entry *proc_fs_cifs;
 369 static const struct file_operations cifsFYI_proc_fops;
 370 static const struct file_operations cifs_oplock_proc_fops;
 371 static const struct file_operations cifs_lookup_cache_proc_fops;
 372 static const struct file_operations traceSMB_proc_fops;
 373 static const struct file_operations cifs_multiuser_mount_proc_fops;
 374 static const struct file_operations cifs_security_flags_proc_fops;
 375 static const struct file_operations cifs_experimental_proc_fops;
 376 static const struct file_operations cifs_linux_ext_proc_fops;
 377
 378 void
 379 cifs_proc_init(void)
 380 {
 381         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 382         if (proc_fs_cifs == NULL)
 383                 return;
 384
 385         proc_fs_cifs->owner = THIS_MODULE;
 386         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 387
 388 #ifdef CONFIG_CIFS_STATS
 389         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 390 #endif /* STATS */
 391         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 392         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 393         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 394         proc_create("Experimental", 0, proc_fs_cifs,
 395                     &cifs_experimental_proc_fops);
 396         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 397                     &cifs_linux_ext_proc_fops);
 398         proc_create("MultiuserMount", 0, proc_fs_cifs,
 399                     &cifs_multiuser_mount_proc_fops);
 400         proc_create("SecurityFlags", 0, proc_fs_cifs,
 401                     &cifs_security_flags_proc_fops);
 402         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 403                     &cifs_lookup_cache_proc_fops);
 404 }
 405
 406 void
 407 cifs_proc_clean(void)
 408 {
 409         if (proc_fs_cifs == NULL)
 410                 return;
 411
 412         remove_proc_entry("DebugData", proc_fs_cifs);
 413         remove_proc_entry("cifsFYI", proc_fs_cifs);
 414         remove_proc_entry("traceSMB", proc_fs_cifs);
 415 #ifdef CONFIG_CIFS_STATS
 416         remove_proc_entry("Stats", proc_fs_cifs);
 417 #endif
 418         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 419         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 420         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 421         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 422         remove_proc_entry("Experimental", proc_fs_cifs);
 423         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 424         remove_proc_entry("fs/cifs", NULL);
 425 }
 426
 427 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 428 {
 429         seq_printf(m, "%d\n", cifsFYI);
 430         return 0;
 431 }
 432
 433 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 434 {
 435         return single_open(file, cifsFYI_proc_show, NULL);
 436 }
 437
 438 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 439                 size_t count, loff_t *ppos)
 440 {
 441         char c;
 442         int rc;
 443
 444         rc = get_user(c, buffer);
 445         if (rc)
 446                 return rc;
 447         if (c == '0' || c == 'n' || c == 'N')
 448                 cifsFYI = 0;
 449         else if (c == '1' || c == 'y' || c == 'Y')
 450                 cifsFYI = 1;
 451         else if ((c > '1') && (c <= '9'))
 452                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 453
 454         return count;
 455 }
 456
 457 static const struct file_operations cifsFYI_proc_fops = {
 458         .owner          = THIS_MODULE,
 459         .open           = cifsFYI_proc_open,
 460         .read           = seq_read,
 461         .llseek         = seq_lseek,
 462         .release        = single_release,
 463         .write          = cifsFYI_proc_write,
 464 };
 465
 466 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 467 {
 468         seq_printf(m, "%d\n", oplockEnabled);
 469         return 0;
 470 }
 471
 472 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 473 {
 474         return single_open(file, cifs_oplock_proc_show, NULL);
 475 }
 476
 477 static ssize_t cifs_oplock_proc_write(struct file *file,
 478                 const char __user *buffer, size_t count, loff_t *ppos)
 479 {
 480         char c;
 481         int rc;
 482
 483         rc = get_user(c, buffer);
 484         if (rc)
 485                 return rc;
 486         if (c == '0' || c == 'n' || c == 'N')
 487                 oplockEnabled = 0;
 488         else if (c == '1' || c == 'y' || c == 'Y')
 489                 oplockEnabled = 1;
 490
 491         return count;
 492 }
 493
 494 static const struct file_operations cifs_oplock_proc_fops = {
 495         .owner          = THIS_MODULE,
 496         .open           = cifs_oplock_proc_open,
 497         .read           = seq_read,
 498         .llseek         = seq_lseek,
 499         .release        = single_release,
 500         .write          = cifs_oplock_proc_write,
 501 };
 502
 503 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
 504 {
 505         seq_printf(m, "%d\n", experimEnabled);
 506         return 0;
 507 }
 508
 509 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
 510 {
 511         return single_open(file, cifs_experimental_proc_show, NULL);
 512 }
 513
 514 static ssize_t cifs_experimental_proc_write(struct file *file,
 515                 const char __user *buffer, size_t count, loff_t *ppos)
 516 {
 517         char c;
 518         int rc;
 519
 520         rc = get_user(c, buffer);
 521         if (rc)
 522                 return rc;
 523         if (c == '0' || c == 'n' || c == 'N')
 524                 experimEnabled = 0;
 525         else if (c == '1' || c == 'y' || c == 'Y')
 526                 experimEnabled = 1;
 527         else if (c == '2')
 528                 experimEnabled = 2;
 529
 530         return count;
 531 }
 532
 533 static const struct file_operations cifs_experimental_proc_fops = {
 534         .owner          = THIS_MODULE,
 535         .open           = cifs_experimental_proc_open,
 536         .read           = seq_read,
 537         .llseek         = seq_lseek,
 538         .release        = single_release,
 539         .write          = cifs_experimental_proc_write,
 540 };
 541
 542 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 543 {
 544         seq_printf(m, "%d\n", linuxExtEnabled);
 545         return 0;
 546 }
 547
 548 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 549 {
 550         return single_open(file, cifs_linux_ext_proc_show, NULL);
 551 }
 552
 553 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 554                 const char __user *buffer, size_t count, loff_t *ppos)
 555 {
 556         char c;
 557         int rc;
 558
 559         rc = get_user(c, buffer);
 560         if (rc)
 561                 return rc;
 562         if (c == '0' || c == 'n' || c == 'N')
 563                 linuxExtEnabled = 0;
 564         else if (c == '1' || c == 'y' || c == 'Y')
 565                 linuxExtEnabled = 1;
 566
 567         return count;
 568 }
 569
 570 static const struct file_operations cifs_linux_ext_proc_fops = {
 571         .owner          = THIS_MODULE,
 572         .open           = cifs_linux_ext_proc_open,
 573         .read           = seq_read,
 574         .llseek         = seq_lseek,
 575         .release        = single_release,
 576         .write          = cifs_linux_ext_proc_write,
 577 };
 578
 579 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 580 {
 581         seq_printf(m, "%d\n", lookupCacheEnabled);
 582         return 0;
 583 }
 584
 585 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 586 {
 587         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 588 }
 589
 590 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 591                 const char __user *buffer, size_t count, loff_t *ppos)
 592 {
 593         char c;
 594         int rc;
 595
 596         rc = get_user(c, buffer);
 597         if (rc)
 598                 return rc;
 599         if (c == '0' || c == 'n' || c == 'N')
 600                 lookupCacheEnabled = 0;
 601         else if (c == '1' || c == 'y' || c == 'Y')
 602                 lookupCacheEnabled = 1;
 603
 604         return count;
 605 }
 606
 607 static const struct file_operations cifs_lookup_cache_proc_fops = {
 608         .owner          = THIS_MODULE,
 609         .open           = cifs_lookup_cache_proc_open,
 610         .read           = seq_read,
 611         .llseek         = seq_lseek,
 612         .release        = single_release,
 613         .write          = cifs_lookup_cache_proc_write,
 614 };
 615
 616 static int traceSMB_proc_show(struct seq_file *m, void *v)
 617 {
 618         seq_printf(m, "%d\n", traceSMB);
 619         return 0;
 620 }
 621
 622 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 623 {
 624         return single_open(file, traceSMB_proc_show, NULL);
 625 }
 626
 627 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 628                 size_t count, loff_t *ppos)
 629 {
 630         char c;
 631         int rc;
 632
 633         rc = get_user(c, buffer);
 634         if (rc)
 635                 return rc;
 636         if (c == '0' || c == 'n' || c == 'N')
 637                 traceSMB = 0;
 638         else if (c == '1' || c == 'y' || c == 'Y')
 639                 traceSMB = 1;
 640
 641         return count;
 642 }
 643
 644 static const struct file_operations traceSMB_proc_fops = {
 645         .owner          = THIS_MODULE,
 646         .open           = traceSMB_proc_open,
 647         .read           = seq_read,
 648         .llseek         = seq_lseek,
 649         .release        = single_release,
 650         .write          = traceSMB_proc_write,
 651 };
 652
 653 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 654 {
 655         seq_printf(m, "%d\n", multiuser_mount);
 656         return 0;
 657 }
 658
 659 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 660 {
 661         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 662 }
 663
 664 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 665                 const char __user *buffer, size_t count, loff_t *ppos)
 666 {
 667         char c;
 668         int rc;
 669
 670         rc = get_user(c, buffer);
 671         if (rc)
 672                 return rc;
 673         if (c == '0' || c == 'n' || c == 'N')
 674                 multiuser_mount = 0;
 675         else if (c == '1' || c == 'y' || c == 'Y')
 676                 multiuser_mount = 1;
 677
 678         return count;
 679 }
 680
 681 static const struct file_operations cifs_multiuser_mount_proc_fops = {
 682         .owner          = THIS_MODULE,
 683         .open           = cifs_multiuser_mount_proc_open,
 684         .read           = seq_read,
 685         .llseek         = seq_lseek,
 686         .release        = single_release,
 687         .write          = cifs_multiuser_mount_proc_write,
 688 };
 689
 690 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 691 {
 692         seq_printf(m, "0x%x\n", extended_security);
 693         return 0;
 694 }
 695
 696 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 697 {
 698         return single_open(file, cifs_security_flags_proc_show, NULL);
 699 }
 700
 701 static ssize_t cifs_security_flags_proc_write(struct file *file,
 702                 const char __user *buffer, size_t count, loff_t *ppos)
 703 {
 704         unsigned int flags;
 705         char flags_string[12];
 706         char c;
 707
 708         if ((count < 1) || (count > 11))
 709                 return -EINVAL;
 710
 711         memset(flags_string, 0, 12);
 712
 713         if (copy_from_user(flags_string, buffer, count))
 714                 return -EFAULT;
 715
 716         if (count < 3) {
 717                 /* single char or single char followed by null */
 718                 c = flags_string[0];
 719                 if (c == '0' || c == 'n' || c == 'N') {
 720                         extended_security = CIFSSEC_DEF; /* default */
 721                         return count;
 722                 } else if (c == '1' || c == 'y' || c == 'Y') {
 723                         extended_security = CIFSSEC_MAX;
 724                         return count;
 725                 } else if (!isdigit(c)) {
 726                         cERROR(1, ("invalid flag %c", c));
 727                         return -EINVAL;
 728                 }
 729         }
 730         /* else we have a number */
 731
 732         flags = simple_strtoul(flags_string, NULL, 0);
 733
 734         cFYI(1, ("sec flags 0x%x", flags));
 735
 736         if (flags <= 0)  {
 737                 cERROR(1, ("invalid security flags %s", flags_string));
 738                 return -EINVAL;
 739         }
 740
 741         if (flags & ~CIFSSEC_MASK) {
 742                 cERROR(1, ("attempt to set unsupported security flags 0x%x",
 743                         flags & ~CIFSSEC_MASK));
 744                 return -EINVAL;
 745         }
 746         /* flags look ok - update the global security flags for cifs module */
 747         extended_security = flags;
 748         if (extended_security & CIFSSEC_MUST_SIGN) {
 749                 /* requiring signing implies signing is allowed */
 750                 extended_security |= CIFSSEC_MAY_SIGN;
 751                 cFYI(1, ("packet signing now required"));
 752         } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
 753                 cFYI(1, ("packet signing disabled"));
 754         }
 755         /* BB should we turn on MAY flags for other MUST options? */
 756         return count;
 757 }
 758
 759 static const struct file_operations cifs_security_flags_proc_fops = {
 760         .owner          = THIS_MODULE,
 761         .open           = cifs_security_flags_proc_open,
 762         .read           = seq_read,
 763         .llseek         = seq_lseek,
 764         .release        = single_release,
 765         .write          = cifs_security_flags_proc_write,
 766 };
 767 #else
 768 inline void cifs_proc_init(void)
 769 {
 770 }
 771
 772 inline void cifs_proc_clean(void)
 773 {
 774 }
 775 #endif /* PROC_FS */