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\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,"Active VFS Requests: %d\n", GlobalTotalActiveXid);
  85         buf += length;
  86         length = sprintf(buf, "Servers:");
  87         buf += length;
  88
  89         i = 0;
  90         read_lock(&GlobalSMBSeslock);
  91         list_for_each(tmp, &GlobalSMBSessionList) {
  92                 i++;
  93                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
  94                 if((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
  95                    (ses->serverNOS == NULL)) {
  96                         buf += sprintf("\nentry for %s not fully displayed\n\t",
  97                                         ses->serverName);
  98
  99                 } else {
 100                         length =
 101                             sprintf(buf,
 102                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS: %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB session status: %d\t",
 103                                 i, ses->serverName, ses->serverDomain,
 104                                 atomic_read(&ses->inUse),
 105                                 ses->serverOS, ses->serverNOS,
 106                                 ses->capabilities,ses->status);
 107                         buf += length;
 108                 }
 109                 if(ses->server) {
 110                         buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
 111                                 ses->server->tcpStatus,
 112                                 atomic_read(&ses->server->socketUseCount),
 113                                 ses->server->secMode,
 114                                 atomic_read(&ses->server->inFlight));
 115
 116 #ifdef CONFIG_CIFS_STATS2
 117                         buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
 118                                 atomic_read(&ses->server->inSend),
 119                                 atomic_read(&ses->server->num_waiters));
 120 #endif
 121
 122                         length = sprintf(buf, "\nMIDs:\n");
 123                         buf += length;
 124
 125                         spin_lock(&GlobalMid_Lock);
 126                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 127                                 mid_entry = list_entry(tmp1, struct
 128                                         mid_q_entry,
 129                                         qhead);
 130                                 if(mid_entry) {
 131                                         length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
 132                                                 mid_entry->midState,
 133                                                 (int)mid_entry->command,
 134                                                 mid_entry->pid,
 135                                                 mid_entry->tsk,
 136                                                 mid_entry->mid);
 137                                         buf += length;
 138                                 }
 139                         }
 140                         spin_unlock(&GlobalMid_Lock);
 141                 }
 142
 143         }
 144         read_unlock(&GlobalSMBSeslock);
 145         sprintf(buf, "\n");
 146         buf++;
 147
 148         length = sprintf(buf, "Shares:");
 149         buf += length;
 150
 151         i = 0;
 152         read_lock(&GlobalSMBSeslock);
 153         list_for_each(tmp, &GlobalTreeConnectionList) {
 154                 __u32 dev_type;
 155                 i++;
 156                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 157                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 158                 length =
 159                     sprintf(buf,
 160                             "\n%d) %s Uses: %d Type: %s DevInfo: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
 161                             i, tcon->treeName,
 162                             atomic_read(&tcon->useCount),
 163                             tcon->nativeFileSystem,
 164                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 165                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 166                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 167                             tcon->tidStatus);
 168                 buf += length;
 169                 if (dev_type == FILE_DEVICE_DISK)
 170                         length = sprintf(buf, " type: DISK ");
 171                 else if (dev_type == FILE_DEVICE_CD_ROM)
 172                         length = sprintf(buf, " type: CDROM ");
 173                 else
 174                         length =
 175                             sprintf(buf, " type: %d ", dev_type);
 176                 buf += length;
 177                 if(tcon->tidStatus == CifsNeedReconnect) {
 178                         buf += sprintf(buf, "\tDISCONNECTED ");
 179                         length += 14;
 180                 }
 181         }
 182         read_unlock(&GlobalSMBSeslock);
 183
 184         length = sprintf(buf, "\n");
 185         buf += length;
 186
 187         /* BB add code to dump additional info such as TCP session info now */
 188         /* Now calculate total size of returned data */
 189         length = buf - original_buf;
 190
 191         if(offset + count >= length)
 192                 *eof = 1;
 193         if(length < offset) {
 194                 *eof = 1;
 195                 return 0;
 196         } else {
 197                 length = length - offset;
 198         }
 199         if (length > count)
 200                 length = count;
 201
 202         return length;
 203 }
 204
 205 #ifdef CONFIG_CIFS_STATS
 206
 207 static int
 208 cifs_stats_write(struct file *file, const char __user *buffer,
 209                unsigned long count, void *data)
 210 {
 211         char c;
 212         int rc;
 213         struct list_head *tmp;
 214         struct cifsTconInfo *tcon;
 215
 216         rc = get_user(c, buffer);
 217         if (rc)
 218                 return rc;
 219
 220         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 221                 read_lock(&GlobalSMBSeslock);
 222 #ifdef CONFIG_CIFS_STATS2
 223                 atomic_set(&totBufAllocCount, 0);
 224                 atomic_set(&totSmBufAllocCount, 0);
 225 #endif /* CONFIG_CIFS_STATS2 */
 226                 list_for_each(tmp, &GlobalTreeConnectionList) {
 227                         tcon = list_entry(tmp, struct cifsTconInfo,
 228                                         cifsConnectionList);
 229                         atomic_set(&tcon->num_smbs_sent, 0);
 230                         atomic_set(&tcon->num_writes, 0);
 231                         atomic_set(&tcon->num_reads, 0);
 232                         atomic_set(&tcon->num_oplock_brks, 0);
 233                         atomic_set(&tcon->num_opens, 0);
 234                         atomic_set(&tcon->num_closes, 0);
 235                         atomic_set(&tcon->num_deletes, 0);
 236                         atomic_set(&tcon->num_mkdirs, 0);
 237                         atomic_set(&tcon->num_rmdirs, 0);
 238                         atomic_set(&tcon->num_renames, 0);
 239                         atomic_set(&tcon->num_t2renames, 0);
 240                         atomic_set(&tcon->num_ffirst, 0);
 241                         atomic_set(&tcon->num_fnext, 0);
 242                         atomic_set(&tcon->num_fclose, 0);
 243                         atomic_set(&tcon->num_hardlinks, 0);
 244                         atomic_set(&tcon->num_symlinks, 0);
 245                         atomic_set(&tcon->num_locks, 0);
 246                 }
 247                 read_unlock(&GlobalSMBSeslock);
 248         }
 249
 250         return count;
 251 }
 252
 253 static int
 254 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 255                   int count, int *eof, void *data)
 256 {
 257         int item_length,i,length;
 258         struct list_head *tmp;
 259         struct cifsTconInfo *tcon;
 260
 261         *beginBuffer = buf + offset;
 262
 263         length = sprintf(buf,
 264                         "Resources in use\nCIFS Session: %d\n",
 265                         sesInfoAllocCount.counter);
 266         buf += length;
 267         item_length =
 268                 sprintf(buf,"Share (unique mount targets): %d\n",
 269                         tconInfoAllocCount.counter);
 270         length += item_length;
 271         buf += item_length;
 272         item_length =
 273                 sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
 274                         bufAllocCount.counter,
 275                         cifs_min_rcv + tcpSesAllocCount.counter);
 276         length += item_length;
 277         buf += item_length;
 278         item_length =
 279                 sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 280                         smBufAllocCount.counter,cifs_min_small);
 281         length += item_length;
 282         buf += item_length;
 283 #ifdef CONFIG_CIFS_STATS2
 284         item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
 285                                 atomic_read(&totBufAllocCount),
 286                                 atomic_read(&totSmBufAllocCount));
 287         length += item_length;
 288         buf += item_length;
 289 #endif /* CONFIG_CIFS_STATS2 */
 290
 291         item_length =
 292                 sprintf(buf,"Operations (MIDs): %d\n",
 293                         midCount.counter);
 294         length += item_length;
 295         buf += item_length;
 296         item_length = sprintf(buf,
 297                 "\n%d session %d share reconnects\n",
 298                 tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
 299         length += item_length;
 300         buf += item_length;
 301
 302         item_length = sprintf(buf,
 303                 "Total vfs operations: %d maximum at one time: %d\n",
 304                 GlobalCurrentXid,GlobalMaxActiveXid);
 305         length += item_length;
 306         buf += item_length;
 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                 item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
 314                 buf += item_length;
 315                 length += item_length;
 316                 if(tcon->tidStatus == CifsNeedReconnect) {
 317                         buf += sprintf(buf, "\tDISCONNECTED ");
 318                         length += 14;
 319                 }
 320                 item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
 321                         atomic_read(&tcon->num_smbs_sent),
 322                         atomic_read(&tcon->num_oplock_brks));
 323                 buf += item_length;
 324                 length += item_length;
 325                 item_length = sprintf(buf, "\nReads:  %d Bytes: %lld",
 326                         atomic_read(&tcon->num_reads),
 327                         (long long)(tcon->bytes_read));
 328                 buf += item_length;
 329                 length += item_length;
 330                 item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
 331                         atomic_read(&tcon->num_writes),
 332                         (long long)(tcon->bytes_written));
 333                 buf += item_length;
 334                 length += item_length;
 335                 item_length = sprintf(buf,
 336                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 337                         atomic_read(&tcon->num_locks),
 338                         atomic_read(&tcon->num_hardlinks),
 339                         atomic_read(&tcon->num_symlinks));
 340                 buf += item_length;
 341                 length += item_length;
 342
 343                 item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
 344                         atomic_read(&tcon->num_opens),
 345                         atomic_read(&tcon->num_closes),
 346                         atomic_read(&tcon->num_deletes));
 347                 buf += item_length;
 348                 length += item_length;
 349                 item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
 350                         atomic_read(&tcon->num_mkdirs),
 351                         atomic_read(&tcon->num_rmdirs));
 352                 buf += item_length;
 353                 length += item_length;
 354                 item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
 355                         atomic_read(&tcon->num_renames),
 356                         atomic_read(&tcon->num_t2renames));
 357                 buf += item_length;
 358                 length += item_length;
 359                 item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
 360                         atomic_read(&tcon->num_ffirst),
 361                         atomic_read(&tcon->num_fnext),
 362                         atomic_read(&tcon->num_fclose));
 363                 buf += item_length;
 364                 length += item_length;
 365         }
 366         read_unlock(&GlobalSMBSeslock);
 367
 368         buf += sprintf(buf,"\n");
 369         length++;
 370
 371         if(offset + count >= length)
 372                 *eof = 1;
 373         if(length < offset) {
 374                 *eof = 1;
 375                 return 0;
 376         } else {
 377                 length = length - offset;
 378         }
 379         if (length > count)
 380                 length = count;
 381
 382         return length;
 383 }
 384 #endif
 385
 386 static struct proc_dir_entry *proc_fs_cifs;
 387 read_proc_t cifs_txanchor_read;
 388 static read_proc_t cifsFYI_read;
 389 static write_proc_t cifsFYI_write;
 390 static read_proc_t oplockEnabled_read;
 391 static write_proc_t oplockEnabled_write;
 392 static read_proc_t lookupFlag_read;
 393 static write_proc_t lookupFlag_write;
 394 static read_proc_t traceSMB_read;
 395 static write_proc_t traceSMB_write;
 396 static read_proc_t multiuser_mount_read;
 397 static write_proc_t multiuser_mount_write;
 398 static read_proc_t extended_security_read;
 399 static write_proc_t extended_security_write;
 400 static read_proc_t ntlmv2_enabled_read;
 401 static write_proc_t ntlmv2_enabled_write;
 402 static read_proc_t packet_signing_enabled_read;
 403 static write_proc_t packet_signing_enabled_write;
 404 static read_proc_t quotaEnabled_read;
 405 static write_proc_t quotaEnabled_write;
 406 static read_proc_t linuxExtensionsEnabled_read;
 407 static write_proc_t linuxExtensionsEnabled_write;
 408
 409 void
 410 cifs_proc_init(void)
 411 {
 412         struct proc_dir_entry *pde;
 413
 414         proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
 415         if (proc_fs_cifs == NULL)
 416                 return;
 417
 418         proc_fs_cifs->owner = THIS_MODULE;
 419         create_proc_read_entry("DebugData", 0, proc_fs_cifs,
 420                                 cifs_debug_data_read, NULL);
 421
 422 #ifdef CONFIG_CIFS_STATS
 423         pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
 424                                 cifs_stats_read, NULL);
 425         if (pde)
 426                 pde->write_proc = cifs_stats_write;
 427 #endif
 428         pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 429                                 cifsFYI_read, NULL);
 430         if (pde)
 431                 pde->write_proc = cifsFYI_write;
 432
 433         pde =
 434             create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
 435                                 traceSMB_read, NULL);
 436         if (pde)
 437                 pde->write_proc = traceSMB_write;
 438
 439         pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
 440                                 oplockEnabled_read, NULL);
 441         if (pde)
 442                 pde->write_proc = oplockEnabled_write;
 443
 444         pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
 445                                 quotaEnabled_read, NULL);
 446         if (pde)
 447                 pde->write_proc = quotaEnabled_write;
 448
 449         pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 450                                 linuxExtensionsEnabled_read, NULL);
 451         if (pde)
 452                 pde->write_proc = linuxExtensionsEnabled_write;
 453
 454         pde =
 455             create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
 456                                 multiuser_mount_read, NULL);
 457         if (pde)
 458                 pde->write_proc = multiuser_mount_write;
 459
 460         pde =
 461             create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
 462                                 extended_security_read, NULL);
 463         if (pde)
 464                 pde->write_proc = extended_security_write;
 465
 466         pde =
 467         create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
 468                                 lookupFlag_read, NULL);
 469         if (pde)
 470                 pde->write_proc = lookupFlag_write;
 471
 472         pde =
 473             create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
 474                                 ntlmv2_enabled_read, NULL);
 475         if (pde)
 476                 pde->write_proc = ntlmv2_enabled_write;
 477
 478         pde =
 479             create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
 480                                 packet_signing_enabled_read, NULL);
 481         if (pde)
 482                 pde->write_proc = packet_signing_enabled_write;
 483 }
 484
 485 void
 486 cifs_proc_clean(void)
 487 {
 488         if (proc_fs_cifs == NULL)
 489                 return;
 490
 491         remove_proc_entry("DebugData", proc_fs_cifs);
 492         remove_proc_entry("cifsFYI", proc_fs_cifs);
 493         remove_proc_entry("traceSMB", proc_fs_cifs);
 494 #ifdef CONFIG_CIFS_STATS
 495         remove_proc_entry("Stats", proc_fs_cifs);
 496 #endif
 497         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 498         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 499         remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
 500         remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
 501         remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
 502         remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
 503         remove_proc_entry("Experimental",proc_fs_cifs);
 504         remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
 505         remove_proc_entry("cifs", proc_root_fs);
 506 }
 507
 508 static int
 509 cifsFYI_read(char *page, char **start, off_t off, int count,
 510              int *eof, void *data)
 511 {
 512         int len;
 513
 514         len = sprintf(page, "%d\n", cifsFYI);
 515
 516         len -= off;
 517         *start = page + off;
 518
 519         if (len > count)
 520                 len = count;
 521         else
 522                 *eof = 1;
 523
 524         if (len < 0)
 525                 len = 0;
 526
 527         return len;
 528 }
 529 static int
 530 cifsFYI_write(struct file *file, const char __user *buffer,
 531               unsigned long count, void *data)
 532 {
 533         char c;
 534         int rc;
 535
 536         rc = get_user(c, buffer);
 537         if (rc)
 538                 return rc;
 539         if (c == '0' || c == 'n' || c == 'N')
 540                 cifsFYI = 0;
 541         else if (c == '1' || c == 'y' || c == 'Y')
 542                 cifsFYI = 1;
 543         else if((c > '1') && (c <= '9'))
 544                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 545
 546         return count;
 547 }
 548
 549 static int
 550 oplockEnabled_read(char *page, char **start, off_t off,
 551                    int count, int *eof, void *data)
 552 {
 553         int len;
 554
 555         len = sprintf(page, "%d\n", oplockEnabled);
 556
 557         len -= off;
 558         *start = page + off;
 559
 560         if (len > count)
 561                 len = count;
 562         else
 563                 *eof = 1;
 564
 565         if (len < 0)
 566                 len = 0;
 567
 568         return len;
 569 }
 570 static int
 571 oplockEnabled_write(struct file *file, const char __user *buffer,
 572                     unsigned long count, void *data)
 573 {
 574         char c;
 575         int rc;
 576
 577         rc = get_user(c, buffer);
 578         if (rc)
 579                 return rc;
 580         if (c == '0' || c == 'n' || c == 'N')
 581                 oplockEnabled = 0;
 582         else if (c == '1' || c == 'y' || c == 'Y')
 583                 oplockEnabled = 1;
 584
 585         return count;
 586 }
 587
 588 static int
 589 quotaEnabled_read(char *page, char **start, off_t off,
 590                    int count, int *eof, void *data)
 591 {
 592         int len;
 593
 594         len = sprintf(page, "%d\n", experimEnabled);
 595 /* could also check if quotas are enabled in kernel
 596         as a whole first */
 597         len -= off;
 598         *start = page + off;
 599
 600         if (len > count)
 601                 len = count;
 602         else
 603                 *eof = 1;
 604
 605         if (len < 0)
 606                 len = 0;
 607
 608         return len;
 609 }
 610 static int
 611 quotaEnabled_write(struct file *file, const char __user *buffer,
 612                     unsigned long count, void *data)
 613 {
 614         char c;
 615         int rc;
 616
 617         rc = get_user(c, buffer);
 618         if (rc)
 619                 return rc;
 620         if (c == '0' || c == 'n' || c == 'N')
 621                 experimEnabled = 0;
 622         else if (c == '1' || c == 'y' || c == 'Y')
 623                 experimEnabled = 1;
 624
 625         return count;
 626 }
 627
 628 static int
 629 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
 630                    int count, int *eof, void *data)
 631 {
 632         int len;
 633
 634         len = sprintf(page, "%d\n", linuxExtEnabled);
 635 /* could also check if quotas are enabled in kernel
 636         as a whole first */
 637         len -= off;
 638         *start = page + off;
 639
 640         if (len > count)
 641                 len = count;
 642         else
 643                 *eof = 1;
 644
 645         if (len < 0)
 646                 len = 0;
 647
 648         return len;
 649 }
 650 static int
 651 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
 652                     unsigned long count, void *data)
 653 {
 654         char c;
 655         int rc;
 656
 657         rc = get_user(c, buffer);
 658         if (rc)
 659                 return rc;
 660         if (c == '0' || c == 'n' || c == 'N')
 661                 linuxExtEnabled = 0;
 662         else if (c == '1' || c == 'y' || c == 'Y')
 663                 linuxExtEnabled = 1;
 664
 665         return count;
 666 }
 667
 668
 669 static int
 670 lookupFlag_read(char *page, char **start, off_t off,
 671                    int count, int *eof, void *data)
 672 {
 673         int len;
 674
 675         len = sprintf(page, "%d\n", lookupCacheEnabled);
 676
 677         len -= off;
 678         *start = page + off;
 679
 680         if (len > count)
 681                 len = count;
 682         else
 683                 *eof = 1;
 684
 685         if (len < 0)
 686                 len = 0;
 687
 688         return len;
 689 }
 690 static int
 691 lookupFlag_write(struct file *file, const char __user *buffer,
 692                     unsigned long count, void *data)
 693 {
 694         char c;
 695         int rc;
 696
 697         rc = get_user(c, buffer);
 698         if (rc)
 699                 return rc;
 700         if (c == '0' || c == 'n' || c == 'N')
 701                 lookupCacheEnabled = 0;
 702         else if (c == '1' || c == 'y' || c == 'Y')
 703                 lookupCacheEnabled = 1;
 704
 705         return count;
 706 }
 707 static int
 708 traceSMB_read(char *page, char **start, off_t off, int count,
 709               int *eof, void *data)
 710 {
 711         int len;
 712
 713         len = sprintf(page, "%d\n", traceSMB);
 714
 715         len -= off;
 716         *start = page + off;
 717
 718         if (len > count)
 719                 len = count;
 720         else
 721                 *eof = 1;
 722
 723         if (len < 0)
 724                 len = 0;
 725
 726         return len;
 727 }
 728 static int
 729 traceSMB_write(struct file *file, const char __user *buffer,
 730                unsigned long count, void *data)
 731 {
 732         char c;
 733         int rc;
 734
 735         rc = get_user(c, buffer);
 736         if (rc)
 737                 return rc;
 738         if (c == '0' || c == 'n' || c == 'N')
 739                 traceSMB = 0;
 740         else if (c == '1' || c == 'y' || c == 'Y')
 741                 traceSMB = 1;
 742
 743         return count;
 744 }
 745
 746 static int
 747 multiuser_mount_read(char *page, char **start, off_t off,
 748                      int count, int *eof, void *data)
 749 {
 750         int len;
 751
 752         len = sprintf(page, "%d\n", multiuser_mount);
 753
 754         len -= off;
 755         *start = page + off;
 756
 757         if (len > count)
 758                 len = count;
 759         else
 760                 *eof = 1;
 761
 762         if (len < 0)
 763                 len = 0;
 764
 765         return len;
 766 }
 767 static int
 768 multiuser_mount_write(struct file *file, const char __user *buffer,
 769                       unsigned long count, void *data)
 770 {
 771         char c;
 772         int rc;
 773
 774         rc = get_user(c, buffer);
 775         if (rc)
 776                 return rc;
 777         if (c == '0' || c == 'n' || c == 'N')
 778                 multiuser_mount = 0;
 779         else if (c == '1' || c == 'y' || c == 'Y')
 780                 multiuser_mount = 1;
 781
 782         return count;
 783 }
 784
 785 static int
 786 extended_security_read(char *page, char **start, off_t off,
 787                        int count, int *eof, void *data)
 788 {
 789         int len;
 790
 791         len = sprintf(page, "%d\n", extended_security);
 792
 793         len -= off;
 794         *start = page + off;
 795
 796         if (len > count)
 797                 len = count;
 798         else
 799                 *eof = 1;
 800
 801         if (len < 0)
 802                 len = 0;
 803
 804         return len;
 805 }
 806 static int
 807 extended_security_write(struct file *file, const char __user *buffer,
 808                         unsigned long count, void *data)
 809 {
 810         char c;
 811         int rc;
 812
 813         rc = get_user(c, buffer);
 814         if (rc)
 815                 return rc;
 816         if (c == '0' || c == 'n' || c == 'N')
 817                 extended_security = 0;
 818         else if (c == '1' || c == 'y' || c == 'Y')
 819                 extended_security = 1;
 820
 821         return count;
 822 }
 823
 824 static int
 825 ntlmv2_enabled_read(char *page, char **start, off_t off,
 826                        int count, int *eof, void *data)
 827 {
 828         int len;
 829
 830         len = sprintf(page, "%d\n", ntlmv2_support);
 831
 832         len -= off;
 833         *start = page + off;
 834
 835         if (len > count)
 836                 len = count;
 837         else
 838                 *eof = 1;
 839
 840         if (len < 0)
 841                 len = 0;
 842
 843         return len;
 844 }
 845 static int
 846 ntlmv2_enabled_write(struct file *file, const char __user *buffer,
 847                         unsigned long count, void *data)
 848 {
 849         char c;
 850         int rc;
 851
 852         rc = get_user(c, buffer);
 853         if (rc)
 854                 return rc;
 855         if (c == '0' || c == 'n' || c == 'N')
 856                 ntlmv2_support = 0;
 857         else if (c == '1' || c == 'y' || c == 'Y')
 858                 ntlmv2_support = 1;
 859
 860         return count;
 861 }
 862
 863 static int
 864 packet_signing_enabled_read(char *page, char **start, off_t off,
 865                        int count, int *eof, void *data)
 866 {
 867         int len;
 868
 869         len = sprintf(page, "%d\n", sign_CIFS_PDUs);
 870
 871         len -= off;
 872         *start = page + off;
 873
 874         if (len > count)
 875                 len = count;
 876         else
 877                 *eof = 1;
 878
 879         if (len < 0)
 880                 len = 0;
 881
 882         return len;
 883 }
 884 static int
 885 packet_signing_enabled_write(struct file *file, const char __user *buffer,
 886                         unsigned long count, void *data)
 887 {
 888         char c;
 889         int rc;
 890
 891         rc = get_user(c, buffer);
 892         if (rc)
 893                 return rc;
 894         if (c == '0' || c == 'n' || c == 'N')
 895                 sign_CIFS_PDUs = 0;
 896         else if (c == '1' || c == 'y' || c == 'Y')
 897                 sign_CIFS_PDUs = 1;
 898         else if (c == '2')
 899                 sign_CIFS_PDUs = 2;
 900
 901         return count;
 902 }
 903
 904
 905 #endif