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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\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_PROC_FS
  61 static int
  62 cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
  63                      int count, int *eof, void *data)
  64 {
  65         struct list_head *tmp;
  66         struct list_head *tmp1;
  67         struct mid_q_entry * mid_entry;
  68         struct cifsSesInfo *ses;
  69         struct cifsTconInfo *tcon;
  70         int i;
  71         int length = 0;
  72         char * original_buf = buf;
  73
  74         *beginBuffer = buf + offset;
  75
  76
  77         length =
  78             sprintf(buf,
  79                     "Display Internal CIFS Data Structures for Debugging\n"
  80                     "---------------------------------------------------\n");
  81         buf += length;
  82         length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
  83         buf += length;
  84         length = sprintf(buf, "Servers:");
  85         buf += length;
  86
  87         i = 0;
  88         read_lock(&GlobalSMBSeslock);
  89         list_for_each(tmp, &GlobalSMBSessionList) {
  90                 i++;
  91                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
  92                 if((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
  93                    (ses->serverNOS == NULL)) {
  94                         buf += sprintf("\nentry for %s not fully displayed\n\t",
  95                                         ses->serverName);
  96
  97                 } else {
  98                         length =
  99                             sprintf(buf,
 100                                     "\n%d) Name: %s  Domain: %s Mounts: %d ServerOS: %s  \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
 101                                 i, ses->serverName, ses->serverDomain,
 102                                 atomic_read(&ses->inUse),
 103                                 ses->serverOS, ses->serverNOS,
 104                                 ses->capabilities,ses->status);
 105                         buf += length;
 106                 }
 107                 if(ses->server) {
 108                         buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
 109                                 ses->server->tcpStatus,
 110                                 atomic_read(&ses->server->socketUseCount),
 111                                 ses->server->secMode,
 112                                 atomic_read(&ses->server->inFlight));
 113
 114                         length = sprintf(buf, "\nMIDs:\n");
 115                         buf += length;
 116
 117                         spin_lock(&GlobalMid_Lock);
 118                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 119                                 mid_entry = list_entry(tmp1, struct
 120                                         mid_q_entry,
 121                                         qhead);
 122                                 if(mid_entry) {
 123                                         length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
 124                                                 mid_entry->midState,
 125                                                 (int)mid_entry->command,
 126                                                 mid_entry->pid,
 127                                                 mid_entry->tsk,
 128                                                 mid_entry->mid);
 129                                         buf += length;
 130                                 }
 131                         }
 132                         spin_unlock(&GlobalMid_Lock);
 133                 }
 134
 135         }
 136         read_unlock(&GlobalSMBSeslock);
 137         sprintf(buf, "\n");
 138         buf++;
 139
 140         length = sprintf(buf, "Shares:");
 141         buf += length;
 142
 143         i = 0;
 144         read_lock(&GlobalSMBSeslock);
 145         list_for_each(tmp, &GlobalTreeConnectionList) {
 146                 __u32 dev_type;
 147                 i++;
 148                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 149                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 150                 length =
 151                     sprintf(buf,
 152                             "\n%d) %s Uses: %d Type: %s Characteristics: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
 153                             i, tcon->treeName,
 154                             atomic_read(&tcon->useCount),
 155                             tcon->nativeFileSystem,
 156                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 157                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 158                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 159                             tcon->tidStatus);
 160                 buf += length;
 161                 if (dev_type == FILE_DEVICE_DISK)
 162                         length = sprintf(buf, " type: DISK ");
 163                 else if (dev_type == FILE_DEVICE_CD_ROM)
 164                         length = sprintf(buf, " type: CDROM ");
 165                 else
 166                         length =
 167                             sprintf(buf, " type: %d ", dev_type);
 168                 buf += length;
 169                 if(tcon->tidStatus == CifsNeedReconnect) {
 170                         buf += sprintf(buf, "\tDISCONNECTED ");
 171                         length += 14;
 172                 }
 173         }
 174         read_unlock(&GlobalSMBSeslock);
 175
 176         length = sprintf(buf, "\n");
 177         buf += length;
 178
 179         /* BB add code to dump additional info such as TCP session info now */
 180         /* Now calculate total size of returned data */
 181         length = buf - original_buf;
 182
 183         if(offset + count >= length)
 184                 *eof = 1;
 185         if(length < offset) {
 186                 *eof = 1;
 187                 return 0;
 188         } else {
 189                 length = length - offset;
 190         }
 191         if (length > count)
 192                 length = count;
 193
 194         return length;
 195 }
 196
 197 #ifdef CONFIG_CIFS_STATS
 198 static int
 199 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 200                   int count, int *eof, void *data)
 201 {
 202         int item_length,i,length;
 203         struct list_head *tmp;
 204         struct cifsTconInfo *tcon;
 205
 206         *beginBuffer = buf + offset;
 207
 208         length = sprintf(buf,
 209                         "Resources in use\nCIFS Session: %d\n",
 210                         sesInfoAllocCount.counter);
 211         buf += length;
 212         item_length =
 213                 sprintf(buf,"Share (unique mount targets): %d\n",
 214                         tconInfoAllocCount.counter);
 215         length += item_length;
 216         buf += item_length;
 217         item_length =
 218                 sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
 219                         bufAllocCount.counter,
 220                         cifs_min_rcv + tcpSesAllocCount.counter);
 221         length += item_length;
 222         buf += item_length;
 223         item_length =
 224                 sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 225                         smBufAllocCount.counter,cifs_min_small);
 226         length += item_length;
 227         buf += item_length;
 228         item_length =
 229                 sprintf(buf,"Operations (MIDs): %d\n",
 230                         midCount.counter);
 231         length += item_length;
 232         buf += item_length;
 233         item_length = sprintf(buf,
 234                 "\n%d session %d share reconnects\n",
 235                 tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
 236         length += item_length;
 237         buf += item_length;
 238
 239         item_length = sprintf(buf,
 240                 "Total vfs operations: %d maximum at one time: %d\n",
 241                 GlobalCurrentXid,GlobalMaxActiveXid);
 242         length += item_length;
 243         buf += item_length;
 244
 245         i = 0;
 246         read_lock(&GlobalSMBSeslock);
 247         list_for_each(tmp, &GlobalTreeConnectionList) {
 248                 i++;
 249                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 250                 item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
 251                 buf += item_length;
 252                 length += item_length;
 253                 if(tcon->tidStatus == CifsNeedReconnect) {
 254                         buf += sprintf(buf, "\tDISCONNECTED ");
 255                         length += 14;
 256                 }
 257                 item_length = sprintf(buf,"\nSMBs: %d Oplock Breaks: %d",
 258                         atomic_read(&tcon->num_smbs_sent),
 259                         atomic_read(&tcon->num_oplock_brks));
 260                 buf += item_length;
 261                 length += item_length;
 262                 item_length = sprintf(buf,"\nReads: %d Bytes %lld",
 263                         atomic_read(&tcon->num_reads),
 264                         (long long)(tcon->bytes_read));
 265                 buf += item_length;
 266                 length += item_length;
 267                 item_length = sprintf(buf,"\nWrites: %d Bytes: %lld",
 268                         atomic_read(&tcon->num_writes),
 269                         (long long)(tcon->bytes_written));
 270                 buf += item_length;
 271                 length += item_length;
 272                 item_length = sprintf(buf,
 273                         "\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
 274                         atomic_read(&tcon->num_opens),
 275                         atomic_read(&tcon->num_deletes),
 276                         atomic_read(&tcon->num_mkdirs),
 277                         atomic_read(&tcon->num_rmdirs));
 278                 buf += item_length;
 279                 length += item_length;
 280                 item_length = sprintf(buf,
 281                         "\nRenames: %d T2 Renames %d",
 282                         atomic_read(&tcon->num_renames),
 283                         atomic_read(&tcon->num_t2renames));
 284                 buf += item_length;
 285                 length += item_length;
 286         }
 287         read_unlock(&GlobalSMBSeslock);
 288
 289         buf += sprintf(buf,"\n");
 290         length++;
 291
 292         if(offset + count >= length)
 293                 *eof = 1;
 294         if(length < offset) {
 295                 *eof = 1;
 296                 return 0;
 297         } else {
 298                 length = length - offset;
 299         }
 300         if (length > count)
 301                 length = count;
 302
 303         return length;
 304 }
 305 #endif
 306
 307 static struct proc_dir_entry *proc_fs_cifs;
 308 read_proc_t cifs_txanchor_read;
 309 static read_proc_t cifsFYI_read;
 310 static write_proc_t cifsFYI_write;
 311 static read_proc_t oplockEnabled_read;
 312 static write_proc_t oplockEnabled_write;
 313 static read_proc_t lookupFlag_read;
 314 static write_proc_t lookupFlag_write;
 315 static read_proc_t traceSMB_read;
 316 static write_proc_t traceSMB_write;
 317 static read_proc_t multiuser_mount_read;
 318 static write_proc_t multiuser_mount_write;
 319 static read_proc_t extended_security_read;
 320 static write_proc_t extended_security_write;
 321 static read_proc_t ntlmv2_enabled_read;
 322 static write_proc_t ntlmv2_enabled_write;
 323 static read_proc_t packet_signing_enabled_read;
 324 static write_proc_t packet_signing_enabled_write;
 325 static read_proc_t quotaEnabled_read;
 326 static write_proc_t quotaEnabled_write;
 327 static read_proc_t linuxExtensionsEnabled_read;
 328 static write_proc_t linuxExtensionsEnabled_write;
 329
 330 void
 331 cifs_proc_init(void)
 332 {
 333         struct proc_dir_entry *pde;
 334
 335         proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
 336         if (proc_fs_cifs == NULL)
 337                 return;
 338
 339         proc_fs_cifs->owner = THIS_MODULE;
 340         create_proc_read_entry("DebugData", 0, proc_fs_cifs,
 341                                 cifs_debug_data_read, NULL);
 342
 343 #ifdef CONFIG_CIFS_STATS
 344         create_proc_read_entry("Stats", 0, proc_fs_cifs,
 345                                 cifs_stats_read, NULL);
 346 #endif
 347         pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 348                                 cifsFYI_read, NULL);
 349         if (pde)
 350                 pde->write_proc = cifsFYI_write;
 351
 352         pde =
 353             create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
 354                                 traceSMB_read, NULL);
 355         if (pde)
 356                 pde->write_proc = traceSMB_write;
 357
 358         pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
 359                                 oplockEnabled_read, NULL);
 360         if (pde)
 361                 pde->write_proc = oplockEnabled_write;
 362
 363         pde = create_proc_read_entry("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
 364                                 quotaEnabled_read, NULL);
 365         if (pde)
 366                 pde->write_proc = quotaEnabled_write;
 367
 368         pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 369                                 linuxExtensionsEnabled_read, NULL);
 370         if (pde)
 371                 pde->write_proc = linuxExtensionsEnabled_write;
 372
 373         pde =
 374             create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
 375                                 multiuser_mount_read, NULL);
 376         if (pde)
 377                 pde->write_proc = multiuser_mount_write;
 378
 379         pde =
 380             create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
 381                                 extended_security_read, NULL);
 382         if (pde)
 383                 pde->write_proc = extended_security_write;
 384
 385         pde =
 386         create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
 387                                 lookupFlag_read, NULL);
 388         if (pde)
 389                 pde->write_proc = lookupFlag_write;
 390
 391         pde =
 392             create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
 393                                 ntlmv2_enabled_read, NULL);
 394         if (pde)
 395                 pde->write_proc = ntlmv2_enabled_write;
 396
 397         pde =
 398             create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
 399                                 packet_signing_enabled_read, NULL);
 400         if (pde)
 401                 pde->write_proc = packet_signing_enabled_write;
 402 }
 403
 404 void
 405 cifs_proc_clean(void)
 406 {
 407         if (proc_fs_cifs == NULL)
 408                 return;
 409
 410         remove_proc_entry("DebugData", proc_fs_cifs);
 411         remove_proc_entry("cifsFYI", proc_fs_cifs);
 412         remove_proc_entry("traceSMB", proc_fs_cifs);
 413 #ifdef CONFIG_CIFS_STATS
 414         remove_proc_entry("Stats", proc_fs_cifs);
 415 #endif
 416         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 417         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 418         remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
 419         remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
 420         remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
 421         remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
 422         remove_proc_entry("ReenableOldCifsReaddirCode",proc_fs_cifs);
 423         remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
 424         remove_proc_entry("cifs", proc_root_fs);
 425 }
 426
 427 static int
 428 cifsFYI_read(char *page, char **start, off_t off, int count,
 429              int *eof, void *data)
 430 {
 431         int len;
 432
 433         len = sprintf(page, "%d\n", cifsFYI);
 434
 435         len -= off;
 436         *start = page + off;
 437
 438         if (len > count)
 439                 len = count;
 440         else
 441                 *eof = 1;
 442
 443         if (len < 0)
 444                 len = 0;
 445
 446         return len;
 447 }
 448 static int
 449 cifsFYI_write(struct file *file, const char __user *buffer,
 450               unsigned long count, void *data)
 451 {
 452         char c;
 453         int rc;
 454
 455         rc = get_user(c, buffer);
 456         if (rc)
 457                 return rc;
 458         if (c == '0' || c == 'n' || c == 'N')
 459                 cifsFYI = 0;
 460         else if (c == '1' || c == 'y' || c == 'Y')
 461                 cifsFYI = 1;
 462
 463         return count;
 464 }
 465
 466 static int
 467 oplockEnabled_read(char *page, char **start, off_t off,
 468                    int count, int *eof, void *data)
 469 {
 470         int len;
 471
 472         len = sprintf(page, "%d\n", oplockEnabled);
 473
 474         len -= off;
 475         *start = page + off;
 476
 477         if (len > count)
 478                 len = count;
 479         else
 480                 *eof = 1;
 481
 482         if (len < 0)
 483                 len = 0;
 484
 485         return len;
 486 }
 487 static int
 488 oplockEnabled_write(struct file *file, const char __user *buffer,
 489                     unsigned long count, void *data)
 490 {
 491         char c;
 492         int rc;
 493
 494         rc = get_user(c, buffer);
 495         if (rc)
 496                 return rc;
 497         if (c == '0' || c == 'n' || c == 'N')
 498                 oplockEnabled = 0;
 499         else if (c == '1' || c == 'y' || c == 'Y')
 500                 oplockEnabled = 1;
 501
 502         return count;
 503 }
 504
 505 static int
 506 quotaEnabled_read(char *page, char **start, off_t off,
 507                    int count, int *eof, void *data)
 508 {
 509         int len;
 510
 511         len = sprintf(page, "%d\n", experimEnabled);
 512 /* could also check if quotas are enabled in kernel
 513         as a whole first */
 514         len -= off;
 515         *start = page + off;
 516
 517         if (len > count)
 518                 len = count;
 519         else
 520                 *eof = 1;
 521
 522         if (len < 0)
 523                 len = 0;
 524
 525         return len;
 526 }
 527 static int
 528 quotaEnabled_write(struct file *file, const char __user *buffer,
 529                     unsigned long count, void *data)
 530 {
 531         char c;
 532         int rc;
 533
 534         rc = get_user(c, buffer);
 535         if (rc)
 536                 return rc;
 537         if (c == '0' || c == 'n' || c == 'N')
 538                 experimEnabled = 0;
 539         else if (c == '1' || c == 'y' || c == 'Y')
 540                 experimEnabled = 1;
 541
 542         return count;
 543 }
 544
 545 static int
 546 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
 547                    int count, int *eof, void *data)
 548 {
 549         int len;
 550
 551         len = sprintf(page, "%d\n", linuxExtEnabled);
 552 /* could also check if quotas are enabled in kernel
 553         as a whole first */
 554         len -= off;
 555         *start = page + off;
 556
 557         if (len > count)
 558                 len = count;
 559         else
 560                 *eof = 1;
 561
 562         if (len < 0)
 563                 len = 0;
 564
 565         return len;
 566 }
 567 static int
 568 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
 569                     unsigned long count, void *data)
 570 {
 571         char c;
 572         int rc;
 573
 574         rc = get_user(c, buffer);
 575         if (rc)
 576                 return rc;
 577         if (c == '0' || c == 'n' || c == 'N')
 578                 linuxExtEnabled = 0;
 579         else if (c == '1' || c == 'y' || c == 'Y')
 580                 linuxExtEnabled = 1;
 581
 582         return count;
 583 }
 584
 585
 586 static int
 587 lookupFlag_read(char *page, char **start, off_t off,
 588                    int count, int *eof, void *data)
 589 {
 590         int len;
 591
 592         len = sprintf(page, "%d\n", lookupCacheEnabled);
 593
 594         len -= off;
 595         *start = page + off;
 596
 597         if (len > count)
 598                 len = count;
 599         else
 600                 *eof = 1;
 601
 602         if (len < 0)
 603                 len = 0;
 604
 605         return len;
 606 }
 607 static int
 608 lookupFlag_write(struct file *file, const char __user *buffer,
 609                     unsigned long count, void *data)
 610 {
 611         char c;
 612         int rc;
 613
 614         rc = get_user(c, buffer);
 615         if (rc)
 616                 return rc;
 617         if (c == '0' || c == 'n' || c == 'N')
 618                 lookupCacheEnabled = 0;
 619         else if (c == '1' || c == 'y' || c == 'Y')
 620                 lookupCacheEnabled = 1;
 621
 622         return count;
 623 }
 624 static int
 625 traceSMB_read(char *page, char **start, off_t off, int count,
 626               int *eof, void *data)
 627 {
 628         int len;
 629
 630         len = sprintf(page, "%d\n", traceSMB);
 631
 632         len -= off;
 633         *start = page + off;
 634
 635         if (len > count)
 636                 len = count;
 637         else
 638                 *eof = 1;
 639
 640         if (len < 0)
 641                 len = 0;
 642
 643         return len;
 644 }
 645 static int
 646 traceSMB_write(struct file *file, const char __user *buffer,
 647                unsigned long count, void *data)
 648 {
 649         char c;
 650         int rc;
 651
 652         rc = get_user(c, buffer);
 653         if (rc)
 654                 return rc;
 655         if (c == '0' || c == 'n' || c == 'N')
 656                 traceSMB = 0;
 657         else if (c == '1' || c == 'y' || c == 'Y')
 658                 traceSMB = 1;
 659
 660         return count;
 661 }
 662
 663 static int
 664 multiuser_mount_read(char *page, char **start, off_t off,
 665                      int count, int *eof, void *data)
 666 {
 667         int len;
 668
 669         len = sprintf(page, "%d\n", multiuser_mount);
 670
 671         len -= off;
 672         *start = page + off;
 673
 674         if (len > count)
 675                 len = count;
 676         else
 677                 *eof = 1;
 678
 679         if (len < 0)
 680                 len = 0;
 681
 682         return len;
 683 }
 684 static int
 685 multiuser_mount_write(struct file *file, const char __user *buffer,
 686                       unsigned long count, void *data)
 687 {
 688         char c;
 689         int rc;
 690
 691         rc = get_user(c, buffer);
 692         if (rc)
 693                 return rc;
 694         if (c == '0' || c == 'n' || c == 'N')
 695                 multiuser_mount = 0;
 696         else if (c == '1' || c == 'y' || c == 'Y')
 697                 multiuser_mount = 1;
 698
 699         return count;
 700 }
 701
 702 static int
 703 extended_security_read(char *page, char **start, off_t off,
 704                        int count, int *eof, void *data)
 705 {
 706         int len;
 707
 708         len = sprintf(page, "%d\n", extended_security);
 709
 710         len -= off;
 711         *start = page + off;
 712
 713         if (len > count)
 714                 len = count;
 715         else
 716                 *eof = 1;
 717
 718         if (len < 0)
 719                 len = 0;
 720
 721         return len;
 722 }
 723 static int
 724 extended_security_write(struct file *file, const char __user *buffer,
 725                         unsigned long count, void *data)
 726 {
 727         char c;
 728         int rc;
 729
 730         rc = get_user(c, buffer);
 731         if (rc)
 732                 return rc;
 733         if (c == '0' || c == 'n' || c == 'N')
 734                 extended_security = 0;
 735         else if (c == '1' || c == 'y' || c == 'Y')
 736                 extended_security = 1;
 737
 738         return count;
 739 }
 740
 741 static int
 742 ntlmv2_enabled_read(char *page, char **start, off_t off,
 743                        int count, int *eof, void *data)
 744 {
 745         int len;
 746
 747         len = sprintf(page, "%d\n", ntlmv2_support);
 748
 749         len -= off;
 750         *start = page + off;
 751
 752         if (len > count)
 753                 len = count;
 754         else
 755                 *eof = 1;
 756
 757         if (len < 0)
 758                 len = 0;
 759
 760         return len;
 761 }
 762 static int
 763 ntlmv2_enabled_write(struct file *file, const char __user *buffer,
 764                         unsigned long count, void *data)
 765 {
 766         char c;
 767         int rc;
 768
 769         rc = get_user(c, buffer);
 770         if (rc)
 771                 return rc;
 772         if (c == '0' || c == 'n' || c == 'N')
 773                 ntlmv2_support = 0;
 774         else if (c == '1' || c == 'y' || c == 'Y')
 775                 ntlmv2_support = 1;
 776
 777         return count;
 778 }
 779
 780 static int
 781 packet_signing_enabled_read(char *page, char **start, off_t off,
 782                        int count, int *eof, void *data)
 783 {
 784         int len;
 785
 786         len = sprintf(page, "%d\n", sign_CIFS_PDUs);
 787
 788         len -= off;
 789         *start = page + off;
 790
 791         if (len > count)
 792                 len = count;
 793         else
 794                 *eof = 1;
 795
 796         if (len < 0)
 797                 len = 0;
 798
 799         return len;
 800 }
 801 static int
 802 packet_signing_enabled_write(struct file *file, const char __user *buffer,
 803                         unsigned long count, void *data)
 804 {
 805         char c;
 806         int rc;
 807
 808         rc = get_user(c, buffer);
 809         if (rc)
 810                 return rc;
 811         if (c == '0' || c == 'n' || c == 'N')
 812                 sign_CIFS_PDUs = 0;
 813         else if (c == '1' || c == 'y' || c == 'Y')
 814                 sign_CIFS_PDUs = 1;
 815         else if (c == '2')
 816                 sign_CIFS_PDUs = 2;
 817
 818         return count;
 819 }
 820
 821
 822 #endif