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   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;
 111         struct list_head *tmp1;
 112         struct mid_q_entry *mid_entry;
 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(&GlobalSMBSeslock);
 126         list_for_each(tmp, &GlobalSMBSessionList) {
 127                 i++;
 128                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
 129                 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
 130                    (ses->serverNOS == NULL)) {
 131                         seq_printf(m, "\nentry for %s not fully "
 132                                         "displayed\n\t", ses->serverName);
 133                 } else {
 134                         seq_printf(m,
 135                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS:"
 136                                     " %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 137                                     " session status: %d\t",
 138                                 i, ses->serverName, ses->serverDomain,
 139                                 atomic_read(&ses->inUse),
 140                                 ses->serverOS, ses->serverNOS,
 141                                 ses->capabilities, ses->status);
 142                 }
 143                 if (ses->server) {
 144                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 145                                     "Server: %d SecMode: 0x%x Req On Wire: %d",
 146                                 ses->server->tcpStatus,
 147                                 atomic_read(&ses->server->socketUseCount),
 148                                 ses->server->secMode,
 149                                 atomic_read(&ses->server->inFlight));
 150
 151 #ifdef CONFIG_CIFS_STATS2
 152                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 153                                 atomic_read(&ses->server->inSend),
 154                                 atomic_read(&ses->server->num_waiters));
 155 #endif
 156
 157                         seq_puts(m, "\nMIDs:\n");
 158
 159                         spin_lock(&GlobalMid_Lock);
 160                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 161                                 mid_entry = list_entry(tmp1, struct
 162                                         mid_q_entry,
 163                                         qhead);
 164                                 seq_printf(m, "State: %d com: %d pid:"
 165                                                 " %d tsk: %p mid %d\n",
 166                                                 mid_entry->midState,
 167                                                 (int)mid_entry->command,
 168                                                 mid_entry->pid,
 169                                                 mid_entry->tsk,
 170                                                 mid_entry->mid);
 171                         }
 172                         spin_unlock(&GlobalMid_Lock);
 173                 }
 174
 175         }
 176         read_unlock(&GlobalSMBSeslock);
 177         seq_putc(m, '\n');
 178
 179         seq_puts(m, "Shares:");
 180
 181         i = 0;
 182         read_lock(&GlobalSMBSeslock);
 183         list_for_each(tmp, &GlobalTreeConnectionList) {
 184                 __u32 dev_type;
 185                 i++;
 186                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 187                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 188                 seq_printf(m, "\n%d) %s Uses: %d ", i,
 189                                  tcon->treeName, atomic_read(&tcon->useCount));
 190                 if (tcon->nativeFileSystem) {
 191                         seq_printf(m, "Type: %s ",
 192                                          tcon->nativeFileSystem);
 193                 }
 194                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 195                                  "\nPathComponentMax: %d Status: %d",
 196                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 197                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 198                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 199                             tcon->tidStatus);
 200                 if (dev_type == FILE_DEVICE_DISK)
 201                         seq_puts(m, " type: DISK ");
 202                 else if (dev_type == FILE_DEVICE_CD_ROM)
 203                         seq_puts(m, " type: CDROM ");
 204                 else
 205                         seq_printf(m, " type: %d ", dev_type);
 206
 207                 if (tcon->tidStatus == CifsNeedReconnect)
 208                         seq_puts(m, "\tDISCONNECTED ");
 209         }
 210         read_unlock(&GlobalSMBSeslock);
 211
 212         seq_putc(m, '\n');
 213
 214         /* BB add code to dump additional info such as TCP session info now */
 215         return 0;
 216 }
 217
 218 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 219 {
 220         return single_open(file, cifs_debug_data_proc_show, NULL);
 221 }
 222
 223 static const struct file_operations cifs_debug_data_proc_fops = {
 224         .owner          = THIS_MODULE,
 225         .open           = cifs_debug_data_proc_open,
 226         .read           = seq_read,
 227         .llseek         = seq_lseek,
 228         .release        = single_release,
 229 };
 230
 231 #ifdef CONFIG_CIFS_STATS
 232 static ssize_t cifs_stats_proc_write(struct file *file,
 233                 const char __user *buffer, size_t count, loff_t *ppos)
 234 {
 235         char c;
 236         int rc;
 237         struct list_head *tmp;
 238         struct cifsTconInfo *tcon;
 239
 240         rc = get_user(c, buffer);
 241         if (rc)
 242                 return rc;
 243
 244         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 245                 read_lock(&GlobalSMBSeslock);
 246 #ifdef CONFIG_CIFS_STATS2
 247                 atomic_set(&totBufAllocCount, 0);
 248                 atomic_set(&totSmBufAllocCount, 0);
 249 #endif /* CONFIG_CIFS_STATS2 */
 250                 list_for_each(tmp, &GlobalTreeConnectionList) {
 251                         tcon = list_entry(tmp, struct cifsTconInfo,
 252                                         cifsConnectionList);
 253                         atomic_set(&tcon->num_smbs_sent, 0);
 254                         atomic_set(&tcon->num_writes, 0);
 255                         atomic_set(&tcon->num_reads, 0);
 256                         atomic_set(&tcon->num_oplock_brks, 0);
 257                         atomic_set(&tcon->num_opens, 0);
 258                         atomic_set(&tcon->num_closes, 0);
 259                         atomic_set(&tcon->num_deletes, 0);
 260                         atomic_set(&tcon->num_mkdirs, 0);
 261                         atomic_set(&tcon->num_rmdirs, 0);
 262                         atomic_set(&tcon->num_renames, 0);
 263                         atomic_set(&tcon->num_t2renames, 0);
 264                         atomic_set(&tcon->num_ffirst, 0);
 265                         atomic_set(&tcon->num_fnext, 0);
 266                         atomic_set(&tcon->num_fclose, 0);
 267                         atomic_set(&tcon->num_hardlinks, 0);
 268                         atomic_set(&tcon->num_symlinks, 0);
 269                         atomic_set(&tcon->num_locks, 0);
 270                 }
 271                 read_unlock(&GlobalSMBSeslock);
 272         }
 273
 274         return count;
 275 }
 276
 277 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 278 {
 279         int i;
 280         struct list_head *tmp;
 281         struct cifsTconInfo *tcon;
 282
 283         seq_printf(m,
 284                         "Resources in use\nCIFS Session: %d\n",
 285                         sesInfoAllocCount.counter);
 286         seq_printf(m, "Share (unique mount targets): %d\n",
 287                         tconInfoAllocCount.counter);
 288         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 289                         bufAllocCount.counter,
 290                         cifs_min_rcv + tcpSesAllocCount.counter);
 291         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 292                         smBufAllocCount.counter, cifs_min_small);
 293 #ifdef CONFIG_CIFS_STATS2
 294         seq_printf(m, "Total Large %d Small %d Allocations\n",
 295                                 atomic_read(&totBufAllocCount),
 296                                 atomic_read(&totSmBufAllocCount));
 297 #endif /* CONFIG_CIFS_STATS2 */
 298
 299         seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
 300         seq_printf(m,
 301                 "\n%d session %d share reconnects\n",
 302                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 303
 304         seq_printf(m,
 305                 "Total vfs operations: %d maximum at one time: %d\n",
 306                 GlobalCurrentXid, GlobalMaxActiveXid);
 307
 308         i = 0;
 309         read_lock(&GlobalSMBSeslock);
 310         list_for_each(tmp, &GlobalTreeConnectionList) {
 311                 i++;
 312                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 313                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 314                 if (tcon->tidStatus == CifsNeedReconnect)
 315                         seq_puts(m, "\tDISCONNECTED ");
 316                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 317                         atomic_read(&tcon->num_smbs_sent),
 318                         atomic_read(&tcon->num_oplock_brks));
 319                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 320                         atomic_read(&tcon->num_reads),
 321                         (long long)(tcon->bytes_read));
 322                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 323                         atomic_read(&tcon->num_writes),
 324                         (long long)(tcon->bytes_written));
 325                 seq_printf(m,
 326                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 327                         atomic_read(&tcon->num_locks),
 328                         atomic_read(&tcon->num_hardlinks),
 329                         atomic_read(&tcon->num_symlinks));
 330
 331                 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
 332                         atomic_read(&tcon->num_opens),
 333                         atomic_read(&tcon->num_closes),
 334                         atomic_read(&tcon->num_deletes));
 335                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 336                         atomic_read(&tcon->num_mkdirs),
 337                         atomic_read(&tcon->num_rmdirs));
 338                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 339                         atomic_read(&tcon->num_renames),
 340                         atomic_read(&tcon->num_t2renames));
 341                 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
 342                         atomic_read(&tcon->num_ffirst),
 343                         atomic_read(&tcon->num_fnext),
 344                         atomic_read(&tcon->num_fclose));
 345         }
 346         read_unlock(&GlobalSMBSeslock);
 347
 348         seq_putc(m, '\n');
 349         return 0;
 350 }
 351
 352 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 353 {
 354         return single_open(file, cifs_stats_proc_show, NULL);
 355 }
 356
 357 static const struct file_operations cifs_stats_proc_fops = {
 358         .owner          = THIS_MODULE,
 359         .open           = cifs_stats_proc_open,
 360         .read           = seq_read,
 361         .llseek         = seq_lseek,
 362         .release        = single_release,
 363         .write          = cifs_stats_proc_write,
 364 };
 365 #endif /* STATS */
 366
 367 static struct proc_dir_entry *proc_fs_cifs;
 368 static const struct file_operations cifsFYI_proc_fops;
 369 static const struct file_operations cifs_oplock_proc_fops;
 370 static const struct file_operations cifs_lookup_cache_proc_fops;
 371 static const struct file_operations traceSMB_proc_fops;
 372 static const struct file_operations cifs_multiuser_mount_proc_fops;
 373 static const struct file_operations cifs_security_flags_proc_fops;
 374 static const struct file_operations cifs_experimental_proc_fops;
 375 static const struct file_operations cifs_linux_ext_proc_fops;
 376
 377 void
 378 cifs_proc_init(void)
 379 {
 380         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 381         if (proc_fs_cifs == NULL)
 382                 return;
 383
 384         proc_fs_cifs->owner = THIS_MODULE;
 385         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 386
 387 #ifdef CONFIG_CIFS_STATS
 388         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 389 #endif /* STATS */
 390         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 391         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 392         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 393         proc_create("Experimental", 0, proc_fs_cifs,
 394                     &cifs_experimental_proc_fops);
 395         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 396                     &cifs_linux_ext_proc_fops);
 397         proc_create("MultiuserMount", 0, proc_fs_cifs,
 398                     &cifs_multiuser_mount_proc_fops);
 399         proc_create("SecurityFlags", 0, proc_fs_cifs,
 400                     &cifs_security_flags_proc_fops);
 401         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 402                     &cifs_lookup_cache_proc_fops);
 403 }
 404
 405 void
 406 cifs_proc_clean(void)
 407 {
 408         if (proc_fs_cifs == NULL)
 409                 return;
 410
 411         remove_proc_entry("DebugData", proc_fs_cifs);
 412         remove_proc_entry("cifsFYI", proc_fs_cifs);
 413         remove_proc_entry("traceSMB", proc_fs_cifs);
 414 #ifdef CONFIG_CIFS_STATS
 415         remove_proc_entry("Stats", proc_fs_cifs);
 416 #endif
 417         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 418         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 419         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 420         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 421         remove_proc_entry("Experimental", proc_fs_cifs);
 422         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 423         remove_proc_entry("fs/cifs", NULL);
 424 }
 425
 426 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 427 {
 428         seq_printf(m, "%d\n", cifsFYI);
 429         return 0;
 430 }
 431
 432 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 433 {
 434         return single_open(file, cifsFYI_proc_show, NULL);
 435 }
 436
 437 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 438                 size_t count, loff_t *ppos)
 439 {
 440         char c;
 441         int rc;
 442
 443         rc = get_user(c, buffer);
 444         if (rc)
 445                 return rc;
 446         if (c == '0' || c == 'n' || c == 'N')
 447                 cifsFYI = 0;
 448         else if (c == '1' || c == 'y' || c == 'Y')
 449                 cifsFYI = 1;
 450         else if ((c > '1') && (c <= '9'))
 451                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 452
 453         return count;
 454 }
 455
 456 static const struct file_operations cifsFYI_proc_fops = {
 457         .owner          = THIS_MODULE,
 458         .open           = cifsFYI_proc_open,
 459         .read           = seq_read,
 460         .llseek         = seq_lseek,
 461         .release        = single_release,
 462         .write          = cifsFYI_proc_write,
 463 };
 464
 465 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 466 {
 467         seq_printf(m, "%d\n", oplockEnabled);
 468         return 0;
 469 }
 470
 471 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 472 {
 473         return single_open(file, cifs_oplock_proc_show, NULL);
 474 }
 475
 476 static ssize_t cifs_oplock_proc_write(struct file *file,
 477                 const char __user *buffer, size_t count, loff_t *ppos)
 478 {
 479         char c;
 480         int rc;
 481
 482         rc = get_user(c, buffer);
 483         if (rc)
 484                 return rc;
 485         if (c == '0' || c == 'n' || c == 'N')
 486                 oplockEnabled = 0;
 487         else if (c == '1' || c == 'y' || c == 'Y')
 488                 oplockEnabled = 1;
 489
 490         return count;
 491 }
 492
 493 static const struct file_operations cifs_oplock_proc_fops = {
 494         .owner          = THIS_MODULE,
 495         .open           = cifs_oplock_proc_open,
 496         .read           = seq_read,
 497         .llseek         = seq_lseek,
 498         .release        = single_release,
 499         .write          = cifs_oplock_proc_write,
 500 };
 501
 502 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
 503 {
 504         seq_printf(m, "%d\n", experimEnabled);
 505         return 0;
 506 }
 507
 508 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
 509 {
 510         return single_open(file, cifs_experimental_proc_show, NULL);
 511 }
 512
 513 static ssize_t cifs_experimental_proc_write(struct file *file,
 514                 const char __user *buffer, size_t count, loff_t *ppos)
 515 {
 516         char c;
 517         int rc;
 518
 519         rc = get_user(c, buffer);
 520         if (rc)
 521                 return rc;
 522         if (c == '0' || c == 'n' || c == 'N')
 523                 experimEnabled = 0;
 524         else if (c == '1' || c == 'y' || c == 'Y')
 525                 experimEnabled = 1;
 526         else if (c == '2')
 527                 experimEnabled = 2;
 528
 529         return count;
 530 }
 531
 532 static const struct file_operations cifs_experimental_proc_fops = {
 533         .owner          = THIS_MODULE,
 534         .open           = cifs_experimental_proc_open,
 535         .read           = seq_read,
 536         .llseek         = seq_lseek,
 537         .release        = single_release,
 538         .write          = cifs_experimental_proc_write,
 539 };
 540
 541 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 542 {
 543         seq_printf(m, "%d\n", linuxExtEnabled);
 544         return 0;
 545 }
 546
 547 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 548 {
 549         return single_open(file, cifs_linux_ext_proc_show, NULL);
 550 }
 551
 552 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 553                 const char __user *buffer, size_t count, loff_t *ppos)
 554 {
 555         char c;
 556         int rc;
 557
 558         rc = get_user(c, buffer);
 559         if (rc)
 560                 return rc;
 561         if (c == '0' || c == 'n' || c == 'N')
 562                 linuxExtEnabled = 0;
 563         else if (c == '1' || c == 'y' || c == 'Y')
 564                 linuxExtEnabled = 1;
 565
 566         return count;
 567 }
 568
 569 static const struct file_operations cifs_linux_ext_proc_fops = {
 570         .owner          = THIS_MODULE,
 571         .open           = cifs_linux_ext_proc_open,
 572         .read           = seq_read,
 573         .llseek         = seq_lseek,
 574         .release        = single_release,
 575         .write          = cifs_linux_ext_proc_write,
 576 };
 577
 578 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 579 {
 580         seq_printf(m, "%d\n", lookupCacheEnabled);
 581         return 0;
 582 }
 583
 584 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 585 {
 586         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 587 }
 588
 589 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 590                 const char __user *buffer, size_t count, loff_t *ppos)
 591 {
 592         char c;
 593         int rc;
 594
 595         rc = get_user(c, buffer);
 596         if (rc)
 597                 return rc;
 598         if (c == '0' || c == 'n' || c == 'N')
 599                 lookupCacheEnabled = 0;
 600         else if (c == '1' || c == 'y' || c == 'Y')
 601                 lookupCacheEnabled = 1;
 602
 603         return count;
 604 }
 605
 606 static const struct file_operations cifs_lookup_cache_proc_fops = {
 607         .owner          = THIS_MODULE,
 608         .open           = cifs_lookup_cache_proc_open,
 609         .read           = seq_read,
 610         .llseek         = seq_lseek,
 611         .release        = single_release,
 612         .write          = cifs_lookup_cache_proc_write,
 613 };
 614
 615 static int traceSMB_proc_show(struct seq_file *m, void *v)
 616 {
 617         seq_printf(m, "%d\n", traceSMB);
 618         return 0;
 619 }
 620
 621 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 622 {
 623         return single_open(file, traceSMB_proc_show, NULL);
 624 }
 625
 626 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 627                 size_t count, loff_t *ppos)
 628 {
 629         char c;
 630         int rc;
 631
 632         rc = get_user(c, buffer);
 633         if (rc)
 634                 return rc;
 635         if (c == '0' || c == 'n' || c == 'N')
 636                 traceSMB = 0;
 637         else if (c == '1' || c == 'y' || c == 'Y')
 638                 traceSMB = 1;
 639
 640         return count;
 641 }
 642
 643 static const struct file_operations traceSMB_proc_fops = {
 644         .owner          = THIS_MODULE,
 645         .open           = traceSMB_proc_open,
 646         .read           = seq_read,
 647         .llseek         = seq_lseek,
 648         .release        = single_release,
 649         .write          = traceSMB_proc_write,
 650 };
 651
 652 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 653 {
 654         seq_printf(m, "%d\n", multiuser_mount);
 655         return 0;
 656 }
 657
 658 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 659 {
 660         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 661 }
 662
 663 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 664                 const char __user *buffer, size_t count, loff_t *ppos)
 665 {
 666         char c;
 667         int rc;
 668
 669         rc = get_user(c, buffer);
 670         if (rc)
 671                 return rc;
 672         if (c == '0' || c == 'n' || c == 'N')
 673                 multiuser_mount = 0;
 674         else if (c == '1' || c == 'y' || c == 'Y')
 675                 multiuser_mount = 1;
 676
 677         return count;
 678 }
 679
 680 static const struct file_operations cifs_multiuser_mount_proc_fops = {
 681         .owner          = THIS_MODULE,
 682         .open           = cifs_multiuser_mount_proc_open,
 683         .read           = seq_read,
 684         .llseek         = seq_lseek,
 685         .release        = single_release,
 686         .write          = cifs_multiuser_mount_proc_write,
 687 };
 688
 689 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 690 {
 691         seq_printf(m, "0x%x\n", extended_security);
 692         return 0;
 693 }
 694
 695 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 696 {
 697         return single_open(file, cifs_security_flags_proc_show, NULL);
 698 }
 699
 700 static ssize_t cifs_security_flags_proc_write(struct file *file,
 701                 const char __user *buffer, size_t count, loff_t *ppos)
 702 {
 703         unsigned int flags;
 704         char flags_string[12];
 705         char c;
 706
 707         if ((count < 1) || (count > 11))
 708                 return -EINVAL;
 709
 710         memset(flags_string, 0, 12);
 711
 712         if (copy_from_user(flags_string, buffer, count))
 713                 return -EFAULT;
 714
 715         if (count < 3) {
 716                 /* single char or single char followed by null */
 717                 c = flags_string[0];
 718                 if (c == '0' || c == 'n' || c == 'N') {
 719                         extended_security = CIFSSEC_DEF; /* default */
 720                         return count;
 721                 } else if (c == '1' || c == 'y' || c == 'Y') {
 722                         extended_security = CIFSSEC_MAX;
 723                         return count;
 724                 } else if (!isdigit(c)) {
 725                         cERROR(1, ("invalid flag %c", c));
 726                         return -EINVAL;
 727                 }
 728         }
 729         /* else we have a number */
 730
 731         flags = simple_strtoul(flags_string, NULL, 0);
 732
 733         cFYI(1, ("sec flags 0x%x", flags));
 734
 735         if (flags <= 0)  {
 736                 cERROR(1, ("invalid security flags %s", flags_string));
 737                 return -EINVAL;
 738         }
 739
 740         if (flags & ~CIFSSEC_MASK) {
 741                 cERROR(1, ("attempt to set unsupported security flags 0x%x",
 742                         flags & ~CIFSSEC_MASK));
 743                 return -EINVAL;
 744         }
 745         /* flags look ok - update the global security flags for cifs module */
 746         extended_security = flags;
 747         if (extended_security & CIFSSEC_MUST_SIGN) {
 748                 /* requiring signing implies signing is allowed */
 749                 extended_security |= CIFSSEC_MAY_SIGN;
 750                 cFYI(1, ("packet signing now required"));
 751         } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
 752                 cFYI(1, ("packet signing disabled"));
 753         }
 754         /* BB should we turn on MAY flags for other MUST options? */
 755         return count;
 756 }
 757
 758 static const struct file_operations cifs_security_flags_proc_fops = {
 759         .owner          = THIS_MODULE,
 760         .open           = cifs_security_flags_proc_open,
 761         .read           = seq_read,
 762         .llseek         = seq_lseek,
 763         .release        = single_release,
 764         .write          = cifs_security_flags_proc_write,
 765 };
 766 #else
 767 inline void cifs_proc_init(void)
 768 {
 769 }
 770
 771 inline void cifs_proc_clean(void)
 772 {
 773 }
 774 #endif /* PROC_FS */