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                 if (mid_entry) {
  83                         cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
  84                                 mid_entry->midState,
  85                                 (int)mid_entry->command,
  86                                 mid_entry->pid,
  87                                 mid_entry->tsk,
  88                                 mid_entry->mid));
  89 #ifdef CONFIG_CIFS_STATS2
  90                         cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
  91                                 mid_entry->largeBuf,
  92                                 mid_entry->resp_buf,
  93                                 mid_entry->when_received,
  94                                 jiffies));
  95 #endif /* STATS2 */
  96                         cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
  97                                   mid_entry->multiEnd));
  98                         if (mid_entry->resp_buf) {
  99                                 cifs_dump_detail(mid_entry->resp_buf);
 100                                 cifs_dump_mem("existing buf: ",
 101 <<<<<<< HEAD:fs/cifs/cifs_debug.c
 102                                         mid_entry->resp_buf,
 103                                         62 /* fixme */);
 104 =======
 105                                         mid_entry->resp_buf, 62);
 106 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:fs/cifs/cifs_debug.c
 107                         }
 108                 }
 109         }
 110         spin_unlock(&GlobalMid_Lock);
 111 }
 112 #endif /* CONFIG_CIFS_DEBUG2 */
 113
 114 #ifdef CONFIG_PROC_FS
 115 static int
 116 cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
 117                      int count, int *eof, void *data)
 118 {
 119         struct list_head *tmp;
 120         struct list_head *tmp1;
 121         struct mid_q_entry *mid_entry;
 122         struct cifsSesInfo *ses;
 123         struct cifsTconInfo *tcon;
 124         int i;
 125         int length = 0;
 126         char *original_buf = buf;
 127
 128         *beginBuffer = buf + offset;
 129
 130         length =
 131             sprintf(buf,
 132                     "Display Internal CIFS Data Structures for Debugging\n"
 133                     "---------------------------------------------------\n");
 134         buf += length;
 135         length = sprintf(buf, "CIFS Version %s\n", CIFS_VERSION);
 136         buf += length;
 137         length = sprintf(buf,
 138                 "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 139         buf += length;
 140         length = sprintf(buf, "Servers:");
 141         buf += length;
 142
 143         i = 0;
 144         read_lock(&GlobalSMBSeslock);
 145         list_for_each(tmp, &GlobalSMBSessionList) {
 146                 i++;
 147                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
 148                 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
 149                    (ses->serverNOS == NULL)) {
 150                         buf += sprintf(buf, "\nentry for %s not fully "
 151                                         "displayed\n\t", ses->serverName);
 152                 } else {
 153                         length =
 154                             sprintf(buf,
 155                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS:"
 156                                     " %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 157                                     " session status: %d\t",
 158                                 i, ses->serverName, ses->serverDomain,
 159                                 atomic_read(&ses->inUse),
 160                                 ses->serverOS, ses->serverNOS,
 161                                 ses->capabilities, ses->status);
 162                         buf += length;
 163                 }
 164                 if (ses->server) {
 165                         buf += sprintf(buf, "TCP status: %d\n\tLocal Users To "
 166                                     "Server: %d SecMode: 0x%x Req On Wire: %d",
 167                                 ses->server->tcpStatus,
 168                                 atomic_read(&ses->server->socketUseCount),
 169                                 ses->server->secMode,
 170                                 atomic_read(&ses->server->inFlight));
 171
 172 #ifdef CONFIG_CIFS_STATS2
 173                         buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
 174                                 atomic_read(&ses->server->inSend),
 175                                 atomic_read(&ses->server->num_waiters));
 176 #endif
 177
 178                         length = sprintf(buf, "\nMIDs:\n");
 179                         buf += length;
 180
 181                         spin_lock(&GlobalMid_Lock);
 182                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 183                                 mid_entry = list_entry(tmp1, struct
 184                                         mid_q_entry,
 185                                         qhead);
 186                                 if (mid_entry) {
 187                                         length = sprintf(buf,
 188                                                         "State: %d com: %d pid:"
 189                                                         " %d tsk: %p mid %d\n",
 190                                                         mid_entry->midState,
 191                                                         (int)mid_entry->command,
 192                                                         mid_entry->pid,
 193                                                         mid_entry->tsk,
 194                                                         mid_entry->mid);
 195                                         buf += length;
 196                                 }
 197                         }
 198                         spin_unlock(&GlobalMid_Lock);
 199                 }
 200
 201         }
 202         read_unlock(&GlobalSMBSeslock);
 203         sprintf(buf, "\n");
 204         buf++;
 205
 206         length = sprintf(buf, "Shares:");
 207         buf += length;
 208
 209         i = 0;
 210         read_lock(&GlobalSMBSeslock);
 211         list_for_each(tmp, &GlobalTreeConnectionList) {
 212                 __u32 dev_type;
 213                 i++;
 214                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 215                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 216                 length = sprintf(buf, "\n%d) %s Uses: %d ", i,
 217                                  tcon->treeName, atomic_read(&tcon->useCount));
 218                 buf += length;
 219                 if (tcon->nativeFileSystem) {
 220                         length = sprintf(buf, "Type: %s ",
 221                                          tcon->nativeFileSystem);
 222                         buf += length;
 223                 }
 224                 length = sprintf(buf, "DevInfo: 0x%x Attributes: 0x%x"
 225                                  "\nPathComponentMax: %d Status: %d",
 226                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 227                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 228                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 229                             tcon->tidStatus);
 230                 buf += length;
 231                 if (dev_type == FILE_DEVICE_DISK)
 232                         length = sprintf(buf, " type: DISK ");
 233                 else if (dev_type == FILE_DEVICE_CD_ROM)
 234                         length = sprintf(buf, " type: CDROM ");
 235                 else
 236                         length =
 237                             sprintf(buf, " type: %d ", dev_type);
 238                 buf += length;
 239                 if (tcon->tidStatus == CifsNeedReconnect) {
 240                         buf += sprintf(buf, "\tDISCONNECTED ");
 241                         length += 14;
 242                 }
 243         }
 244         read_unlock(&GlobalSMBSeslock);
 245
 246         length = sprintf(buf, "\n");
 247         buf += length;
 248
 249         /* BB add code to dump additional info such as TCP session info now */
 250         /* Now calculate total size of returned data */
 251         length = buf - original_buf;
 252
 253         if (offset + count >= length)
 254                 *eof = 1;
 255         if (length < offset) {
 256                 *eof = 1;
 257                 return 0;
 258         } else {
 259                 length = length - offset;
 260         }
 261         if (length > count)
 262                 length = count;
 263
 264         return length;
 265 }
 266
 267 #ifdef CONFIG_CIFS_STATS
 268
 269 static int
 270 cifs_stats_write(struct file *file, const char __user *buffer,
 271                  unsigned long count, void *data)
 272 {
 273         char c;
 274         int rc;
 275         struct list_head *tmp;
 276         struct cifsTconInfo *tcon;
 277
 278         rc = get_user(c, buffer);
 279         if (rc)
 280                 return rc;
 281
 282         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 283                 read_lock(&GlobalSMBSeslock);
 284 #ifdef CONFIG_CIFS_STATS2
 285                 atomic_set(&totBufAllocCount, 0);
 286                 atomic_set(&totSmBufAllocCount, 0);
 287 #endif /* CONFIG_CIFS_STATS2 */
 288                 list_for_each(tmp, &GlobalTreeConnectionList) {
 289                         tcon = list_entry(tmp, struct cifsTconInfo,
 290                                         cifsConnectionList);
 291                         atomic_set(&tcon->num_smbs_sent, 0);
 292                         atomic_set(&tcon->num_writes, 0);
 293                         atomic_set(&tcon->num_reads, 0);
 294                         atomic_set(&tcon->num_oplock_brks, 0);
 295                         atomic_set(&tcon->num_opens, 0);
 296                         atomic_set(&tcon->num_closes, 0);
 297                         atomic_set(&tcon->num_deletes, 0);
 298                         atomic_set(&tcon->num_mkdirs, 0);
 299                         atomic_set(&tcon->num_rmdirs, 0);
 300                         atomic_set(&tcon->num_renames, 0);
 301                         atomic_set(&tcon->num_t2renames, 0);
 302                         atomic_set(&tcon->num_ffirst, 0);
 303                         atomic_set(&tcon->num_fnext, 0);
 304                         atomic_set(&tcon->num_fclose, 0);
 305                         atomic_set(&tcon->num_hardlinks, 0);
 306                         atomic_set(&tcon->num_symlinks, 0);
 307                         atomic_set(&tcon->num_locks, 0);
 308                 }
 309                 read_unlock(&GlobalSMBSeslock);
 310         }
 311
 312         return count;
 313 }
 314
 315 static int
 316 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 317                   int count, int *eof, void *data)
 318 {
 319         int item_length, i, length;
 320         struct list_head *tmp;
 321         struct cifsTconInfo *tcon;
 322
 323         *beginBuffer = buf + offset;
 324
 325         length = sprintf(buf,
 326                         "Resources in use\nCIFS Session: %d\n",
 327                         sesInfoAllocCount.counter);
 328         buf += length;
 329         item_length =
 330                 sprintf(buf, "Share (unique mount targets): %d\n",
 331                         tconInfoAllocCount.counter);
 332         length += item_length;
 333         buf += item_length;
 334         item_length =
 335                 sprintf(buf, "SMB Request/Response Buffer: %d Pool size: %d\n",
 336                         bufAllocCount.counter,
 337                         cifs_min_rcv + tcpSesAllocCount.counter);
 338         length += item_length;
 339         buf += item_length;
 340         item_length =
 341                 sprintf(buf, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 342                         smBufAllocCount.counter, cifs_min_small);
 343         length += item_length;
 344         buf += item_length;
 345 #ifdef CONFIG_CIFS_STATS2
 346         item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
 347                                 atomic_read(&totBufAllocCount),
 348                                 atomic_read(&totSmBufAllocCount));
 349         length += item_length;
 350         buf += item_length;
 351 #endif /* CONFIG_CIFS_STATS2 */
 352
 353         item_length =
 354                 sprintf(buf, "Operations (MIDs): %d\n",
 355                         midCount.counter);
 356         length += item_length;
 357         buf += item_length;
 358         item_length = sprintf(buf,
 359                 "\n%d session %d share reconnects\n",
 360                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 361         length += item_length;
 362         buf += item_length;
 363
 364         item_length = sprintf(buf,
 365                 "Total vfs operations: %d maximum at one time: %d\n",
 366                 GlobalCurrentXid, GlobalMaxActiveXid);
 367         length += item_length;
 368         buf += item_length;
 369
 370         i = 0;
 371         read_lock(&GlobalSMBSeslock);
 372         list_for_each(tmp, &GlobalTreeConnectionList) {
 373                 i++;
 374                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 375                 item_length = sprintf(buf, "\n%d) %s", i, tcon->treeName);
 376                 buf += item_length;
 377                 length += item_length;
 378                 if (tcon->tidStatus == CifsNeedReconnect) {
 379                         buf += sprintf(buf, "\tDISCONNECTED ");
 380                         length += 14;
 381                 }
 382                 item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
 383                         atomic_read(&tcon->num_smbs_sent),
 384                         atomic_read(&tcon->num_oplock_brks));
 385                 buf += item_length;
 386                 length += item_length;
 387                 item_length = sprintf(buf, "\nReads:  %d Bytes: %lld",
 388                         atomic_read(&tcon->num_reads),
 389                         (long long)(tcon->bytes_read));
 390                 buf += item_length;
 391                 length += item_length;
 392                 item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
 393                         atomic_read(&tcon->num_writes),
 394                         (long long)(tcon->bytes_written));
 395                 buf += item_length;
 396                 length += item_length;
 397                 item_length = sprintf(buf,
 398                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 399                         atomic_read(&tcon->num_locks),
 400                         atomic_read(&tcon->num_hardlinks),
 401                         atomic_read(&tcon->num_symlinks));
 402                 buf += item_length;
 403                 length += item_length;
 404
 405                 item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
 406                         atomic_read(&tcon->num_opens),
 407                         atomic_read(&tcon->num_closes),
 408                         atomic_read(&tcon->num_deletes));
 409                 buf += item_length;
 410                 length += item_length;
 411                 item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
 412                         atomic_read(&tcon->num_mkdirs),
 413                         atomic_read(&tcon->num_rmdirs));
 414                 buf += item_length;
 415                 length += item_length;
 416                 item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
 417                         atomic_read(&tcon->num_renames),
 418                         atomic_read(&tcon->num_t2renames));
 419                 buf += item_length;
 420                 length += item_length;
 421                 item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
 422                         atomic_read(&tcon->num_ffirst),
 423                         atomic_read(&tcon->num_fnext),
 424                         atomic_read(&tcon->num_fclose));
 425                 buf += item_length;
 426                 length += item_length;
 427         }
 428         read_unlock(&GlobalSMBSeslock);
 429
 430         buf += sprintf(buf, "\n");
 431         length++;
 432
 433         if (offset + count >= length)
 434                 *eof = 1;
 435         if (length < offset) {
 436                 *eof = 1;
 437                 return 0;
 438         } else {
 439                 length = length - offset;
 440         }
 441         if (length > count)
 442                 length = count;
 443
 444         return length;
 445 }
 446 <<<<<<< HEAD:fs/cifs/cifs_debug.c
 447 #endif
 448 =======
 449 #endif /* STATS */
 450 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:fs/cifs/cifs_debug.c
 451
 452 static struct proc_dir_entry *proc_fs_cifs;
 453 read_proc_t cifs_txanchor_read;
 454 static read_proc_t cifsFYI_read;
 455 static write_proc_t cifsFYI_write;
 456 static read_proc_t oplockEnabled_read;
 457 static write_proc_t oplockEnabled_write;
 458 static read_proc_t lookupFlag_read;
 459 static write_proc_t lookupFlag_write;
 460 static read_proc_t traceSMB_read;
 461 static write_proc_t traceSMB_write;
 462 static read_proc_t multiuser_mount_read;
 463 static write_proc_t multiuser_mount_write;
 464 static read_proc_t security_flags_read;
 465 static write_proc_t security_flags_write;
 466 /* static read_proc_t ntlmv2_enabled_read;
 467 static write_proc_t ntlmv2_enabled_write;
 468 static read_proc_t packet_signing_enabled_read;
 469 static write_proc_t packet_signing_enabled_write;*/
 470 static read_proc_t experimEnabled_read;
 471 static write_proc_t experimEnabled_write;
 472 static read_proc_t linuxExtensionsEnabled_read;
 473 static write_proc_t linuxExtensionsEnabled_write;
 474
 475 void
 476 cifs_proc_init(void)
 477 {
 478         struct proc_dir_entry *pde;
 479
 480         proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
 481         if (proc_fs_cifs == NULL)
 482                 return;
 483
 484         proc_fs_cifs->owner = THIS_MODULE;
 485         create_proc_read_entry("DebugData", 0, proc_fs_cifs,
 486                                 cifs_debug_data_read, NULL);
 487
 488 #ifdef CONFIG_CIFS_STATS
 489         pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
 490                                 cifs_stats_read, NULL);
 491         if (pde)
 492                 pde->write_proc = cifs_stats_write;
 493 <<<<<<< HEAD:fs/cifs/cifs_debug.c
 494 #endif
 495 =======
 496 #endif /* STATS */
 497 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:fs/cifs/cifs_debug.c
 498         pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 499                                 cifsFYI_read, NULL);
 500         if (pde)
 501                 pde->write_proc = cifsFYI_write;
 502
 503         pde =
 504             create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
 505                                 traceSMB_read, NULL);
 506         if (pde)
 507                 pde->write_proc = traceSMB_write;
 508
 509         pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
 510                                 oplockEnabled_read, NULL);
 511         if (pde)
 512                 pde->write_proc = oplockEnabled_write;
 513
 514         pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
 515                                 experimEnabled_read, NULL);
 516         if (pde)
 517                 pde->write_proc = experimEnabled_write;
 518
 519         pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 520                                 linuxExtensionsEnabled_read, NULL);
 521         if (pde)
 522                 pde->write_proc = linuxExtensionsEnabled_write;
 523
 524         pde =
 525             create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
 526                                 multiuser_mount_read, NULL);
 527         if (pde)
 528                 pde->write_proc = multiuser_mount_write;
 529
 530         pde =
 531             create_proc_read_entry("SecurityFlags", 0, proc_fs_cifs,
 532                                 security_flags_read, NULL);
 533         if (pde)
 534                 pde->write_proc = security_flags_write;
 535
 536         pde =
 537         create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
 538                                 lookupFlag_read, NULL);
 539         if (pde)
 540                 pde->write_proc = lookupFlag_write;
 541
 542 /*      pde =
 543             create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
 544                                 ntlmv2_enabled_read, NULL);
 545         if (pde)
 546                 pde->write_proc = ntlmv2_enabled_write;
 547
 548         pde =
 549             create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
 550                                 packet_signing_enabled_read, NULL);
 551         if (pde)
 552                 pde->write_proc = packet_signing_enabled_write;*/
 553 }
 554
 555 void
 556 cifs_proc_clean(void)
 557 {
 558         if (proc_fs_cifs == NULL)
 559                 return;
 560
 561         remove_proc_entry("DebugData", proc_fs_cifs);
 562         remove_proc_entry("cifsFYI", proc_fs_cifs);
 563         remove_proc_entry("traceSMB", proc_fs_cifs);
 564 #ifdef CONFIG_CIFS_STATS
 565         remove_proc_entry("Stats", proc_fs_cifs);
 566 #endif
 567         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 568         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 569 /*      remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */
 570         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 571 /*      remove_proc_entry("PacketSigningEnabled", proc_fs_cifs); */
 572         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 573         remove_proc_entry("Experimental", proc_fs_cifs);
 574         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 575         remove_proc_entry("cifs", proc_root_fs);
 576 }
 577
 578 static int
 579 cifsFYI_read(char *page, char **start, off_t off, int count,
 580              int *eof, void *data)
 581 {
 582         int len;
 583
 584         len = sprintf(page, "%d\n", cifsFYI);
 585
 586         len -= off;
 587         *start = page + off;
 588
 589         if (len > count)
 590                 len = count;
 591         else
 592                 *eof = 1;
 593
 594         if (len < 0)
 595                 len = 0;
 596
 597         return len;
 598 }
 599 static int
 600 cifsFYI_write(struct file *file, const char __user *buffer,
 601               unsigned long count, void *data)
 602 {
 603         char c;
 604         int rc;
 605
 606         rc = get_user(c, buffer);
 607         if (rc)
 608                 return rc;
 609         if (c == '0' || c == 'n' || c == 'N')
 610                 cifsFYI = 0;
 611         else if (c == '1' || c == 'y' || c == 'Y')
 612                 cifsFYI = 1;
 613         else if ((c > '1') && (c <= '9'))
 614                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 615
 616         return count;
 617 }
 618
 619 static int
 620 oplockEnabled_read(char *page, char **start, off_t off,
 621                    int count, int *eof, void *data)
 622 {
 623         int len;
 624
 625         len = sprintf(page, "%d\n", oplockEnabled);
 626
 627         len -= off;
 628         *start = page + off;
 629
 630         if (len > count)
 631                 len = count;
 632         else
 633                 *eof = 1;
 634
 635         if (len < 0)
 636                 len = 0;
 637
 638         return len;
 639 }
 640 static int
 641 oplockEnabled_write(struct file *file, const char __user *buffer,
 642                     unsigned long count, void *data)
 643 {
 644         char c;
 645         int rc;
 646
 647         rc = get_user(c, buffer);
 648         if (rc)
 649                 return rc;
 650         if (c == '0' || c == 'n' || c == 'N')
 651                 oplockEnabled = 0;
 652         else if (c == '1' || c == 'y' || c == 'Y')
 653                 oplockEnabled = 1;
 654
 655         return count;
 656 }
 657
 658 static int
 659 experimEnabled_read(char *page, char **start, off_t off,
 660                     int count, int *eof, void *data)
 661 {
 662         int len;
 663
 664         len = sprintf(page, "%d\n", experimEnabled);
 665
 666         len -= off;
 667         *start = page + off;
 668
 669         if (len > count)
 670                 len = count;
 671         else
 672                 *eof = 1;
 673
 674         if (len < 0)
 675                 len = 0;
 676
 677         return len;
 678 }
 679 static int
 680 experimEnabled_write(struct file *file, const char __user *buffer,
 681                      unsigned long count, void *data)
 682 {
 683         char c;
 684         int rc;
 685
 686         rc = get_user(c, buffer);
 687         if (rc)
 688                 return rc;
 689         if (c == '0' || c == 'n' || c == 'N')
 690                 experimEnabled = 0;
 691         else if (c == '1' || c == 'y' || c == 'Y')
 692                 experimEnabled = 1;
 693         else if (c == '2')
 694                 experimEnabled = 2;
 695
 696         return count;
 697 }
 698
 699 static int
 700 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
 701                             int count, int *eof, void *data)
 702 {
 703         int len;
 704
 705         len = sprintf(page, "%d\n", linuxExtEnabled);
 706         len -= off;
 707         *start = page + off;
 708
 709         if (len > count)
 710                 len = count;
 711         else
 712                 *eof = 1;
 713
 714         if (len < 0)
 715                 len = 0;
 716
 717         return len;
 718 }
 719 static int
 720 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
 721                              unsigned long count, void *data)
 722 {
 723         char c;
 724         int rc;
 725
 726         rc = get_user(c, buffer);
 727         if (rc)
 728                 return rc;
 729         if (c == '0' || c == 'n' || c == 'N')
 730                 linuxExtEnabled = 0;
 731         else if (c == '1' || c == 'y' || c == 'Y')
 732                 linuxExtEnabled = 1;
 733
 734         return count;
 735 }
 736
 737
 738 static int
 739 lookupFlag_read(char *page, char **start, off_t off,
 740                 int count, int *eof, void *data)
 741 {
 742         int len;
 743
 744         len = sprintf(page, "%d\n", lookupCacheEnabled);
 745
 746         len -= off;
 747         *start = page + off;
 748
 749         if (len > count)
 750                 len = count;
 751         else
 752                 *eof = 1;
 753
 754         if (len < 0)
 755                 len = 0;
 756
 757         return len;
 758 }
 759 static int
 760 lookupFlag_write(struct file *file, const char __user *buffer,
 761                     unsigned long count, void *data)
 762 {
 763         char c;
 764         int rc;
 765
 766         rc = get_user(c, buffer);
 767         if (rc)
 768                 return rc;
 769         if (c == '0' || c == 'n' || c == 'N')
 770                 lookupCacheEnabled = 0;
 771         else if (c == '1' || c == 'y' || c == 'Y')
 772                 lookupCacheEnabled = 1;
 773
 774         return count;
 775 }
 776 static int
 777 traceSMB_read(char *page, char **start, off_t off, int count,
 778               int *eof, void *data)
 779 {
 780         int len;
 781
 782         len = sprintf(page, "%d\n", traceSMB);
 783
 784         len -= off;
 785         *start = page + off;
 786
 787         if (len > count)
 788                 len = count;
 789         else
 790                 *eof = 1;
 791
 792         if (len < 0)
 793                 len = 0;
 794
 795         return len;
 796 }
 797 static int
 798 traceSMB_write(struct file *file, const char __user *buffer,
 799                unsigned long count, void *data)
 800 {
 801         char c;
 802         int rc;
 803
 804         rc = get_user(c, buffer);
 805         if (rc)
 806                 return rc;
 807         if (c == '0' || c == 'n' || c == 'N')
 808                 traceSMB = 0;
 809         else if (c == '1' || c == 'y' || c == 'Y')
 810                 traceSMB = 1;
 811
 812         return count;
 813 }
 814
 815 static int
 816 multiuser_mount_read(char *page, char **start, off_t off,
 817                      int count, int *eof, void *data)
 818 {
 819         int len;
 820
 821         len = sprintf(page, "%d\n", multiuser_mount);
 822
 823         len -= off;
 824         *start = page + off;
 825
 826         if (len > count)
 827                 len = count;
 828         else
 829                 *eof = 1;
 830
 831         if (len < 0)
 832                 len = 0;
 833
 834         return len;
 835 }
 836 static int
 837 multiuser_mount_write(struct file *file, const char __user *buffer,
 838                       unsigned long count, void *data)
 839 {
 840         char c;
 841         int rc;
 842
 843         rc = get_user(c, buffer);
 844         if (rc)
 845                 return rc;
 846         if (c == '0' || c == 'n' || c == 'N')
 847                 multiuser_mount = 0;
 848         else if (c == '1' || c == 'y' || c == 'Y')
 849                 multiuser_mount = 1;
 850
 851         return count;
 852 }
 853
 854 static int
 855 security_flags_read(char *page, char **start, off_t off,
 856                        int count, int *eof, void *data)
 857 {
 858         int len;
 859
 860         len = sprintf(page, "0x%x\n", extended_security);
 861
 862         len -= off;
 863         *start = page + off;
 864
 865         if (len > count)
 866                 len = count;
 867         else
 868                 *eof = 1;
 869
 870         if (len < 0)
 871                 len = 0;
 872
 873         return len;
 874 }
 875 static int
 876 security_flags_write(struct file *file, const char __user *buffer,
 877                         unsigned long count, void *data)
 878 {
 879         unsigned int flags;
 880         char flags_string[12];
 881         char c;
 882
 883         if ((count < 1) || (count > 11))
 884                 return -EINVAL;
 885
 886         memset(flags_string, 0, 12);
 887
 888         if (copy_from_user(flags_string, buffer, count))
 889                 return -EFAULT;
 890
 891         if (count < 3) {
 892                 /* single char or single char followed by null */
 893                 c = flags_string[0];
 894                 if (c == '0' || c == 'n' || c == 'N') {
 895                         extended_security = CIFSSEC_DEF; /* default */
 896                         return count;
 897                 } else if (c == '1' || c == 'y' || c == 'Y') {
 898                         extended_security = CIFSSEC_MAX;
 899                         return count;
 900                 } else if (!isdigit(c)) {
 901                         cERROR(1, ("invalid flag %c", c));
 902                         return -EINVAL;
 903                 }
 904         }
 905         /* else we have a number */
 906
 907         flags = simple_strtoul(flags_string, NULL, 0);
 908
 909         cFYI(1, ("sec flags 0x%x", flags));
 910
 911         if (flags <= 0)  {
 912                 cERROR(1, ("invalid security flags %s", flags_string));
 913                 return -EINVAL;
 914         }
 915
 916         if (flags & ~CIFSSEC_MASK) {
 917                 cERROR(1, ("attempt to set unsupported security flags 0x%x",
 918                         flags & ~CIFSSEC_MASK));
 919                 return -EINVAL;
 920         }
 921         /* flags look ok - update the global security flags for cifs module */
 922         extended_security = flags;
 923         if (extended_security & CIFSSEC_MUST_SIGN) {
 924                 /* requiring signing implies signing is allowed */
 925                 extended_security |= CIFSSEC_MAY_SIGN;
 926                 cFYI(1, ("packet signing now required"));
 927         } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
 928                 cFYI(1, ("packet signing disabled"));
 929         }
 930         /* BB should we turn on MAY flags for other MUST options? */
 931         return count;
 932 }
 933 <<<<<<< HEAD:fs/cifs/cifs_debug.c
 934 #endif
 935 =======
 936 #else
 937 inline void cifs_proc_init(void)
 938 {
 939 }
 940
 941 inline void cifs_proc_clean(void)
 942 {
 943 }
 944 #endif /* PROC_FS */
 945 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:fs/cifs/cifs_debug.c