fs/cifs/cifs_debug.c

   1 /*
   2  *   fs/cifs_debug.c
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2000,2003
   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
  33 void
  34 cifs_dump_mem(char *label, void *data, int length)
  35 {
  36         int i, j;
  37         int *intptr = data;
  38         char *charptr = data;
  39         char buf[10], line[80];
  40
  41         printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\n",
  42                 label, length, data);
  43         for (i = 0; i < length; i += 16) {
  44                 line[0] = 0;
  45                 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
  46                         sprintf(buf, " %08x", intptr[i / 4 + j]);
  47                         strcat(line, buf);
  48                 }
  49                 buf[0] = ' ';
  50                 buf[2] = 0;
  51                 for (j = 0; (j < 16) && (i + j < length); j++) {
  52                         buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
  53                         strcat(line, buf);
  54                 }
  55                 printk(KERN_DEBUG "%s\n", line);
  56         }
  57 }
  58
  59 #ifdef CONFIG_PROC_FS
  60 static int
  61 cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
  62                      int count, int *eof, void *data)
  63 {
  64         struct list_head *tmp;
  65         struct list_head *tmp1;
  66         struct mid_q_entry * mid_entry;
  67         struct cifsSesInfo *ses;
  68         struct cifsTconInfo *tcon;
  69         int i;
  70         int length = 0;
  71         char * original_buf = buf;
  72
  73         *beginBuffer = buf + offset;
  74
  75
  76         length =
  77             sprintf(buf,
  78                     "Display Internal CIFS Data Structures for Debugging\n"
  79                     "---------------------------------------------------\n");
  80         buf += length;
  81
  82         length = sprintf(buf, "Servers:\n");
  83         buf += length;
  84
  85         i = 0;
  86         read_lock(&GlobalSMBSeslock);
  87         list_for_each(tmp, &GlobalSMBSessionList) {
  88                 i++;
  89                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
  90                 length =
  91                     sprintf(buf,
  92                             "\n%d) Name: %s  Domain: %s Mounts: %d ServerOS: %s  \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
  93                                 i, ses->serverName, ses->serverDomain, atomic_read(&ses->inUse),
  94                                 ses->serverOS, ses->serverNOS, ses->capabilities,ses->status);
  95                 buf += length;
  96                 if(ses->server) {
  97                         buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
  98                                 ses->server->tcpStatus,
  99                                 atomic_read(&ses->server->socketUseCount),
 100                                 ses->server->secMode,
 101                                 atomic_read(&ses->server->inFlight));
 102
 103                         length = sprintf(buf, "\nMIDs: \n");
 104                         buf += length;
 105
 106                         spin_lock(&GlobalMid_Lock);
 107                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 108                                 mid_entry = list_entry(tmp1, struct
 109                                         mid_q_entry,
 110                                         qhead);
 111                                 if(mid_entry) {
 112                                         length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",mid_entry->midState,mid_entry->command,mid_entry->pid,mid_entry->tsk,mid_entry->mid);
 113                                         buf += length;
 114                                 }
 115                         }
 116                         spin_unlock(&GlobalMid_Lock);
 117                 }
 118
 119         }
 120         read_unlock(&GlobalSMBSeslock);
 121         sprintf(buf, "\n");
 122         buf++;
 123
 124         length = sprintf(buf, "\nShares:\n");
 125         buf += length;
 126
 127         i = 0;
 128         read_lock(&GlobalSMBSeslock);
 129         list_for_each(tmp, &GlobalTreeConnectionList) {
 130                 __u32 dev_type;
 131                 i++;
 132                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 133                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 134                 length =
 135                     sprintf(buf,
 136                             "\n%d) %s Uses: %d Type: %s Characteristics: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
 137                             i, tcon->treeName,
 138                             atomic_read(&tcon->useCount),
 139                             tcon->nativeFileSystem,
 140                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 141                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 142                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 143                             tcon->tidStatus);
 144                 buf += length;
 145                 if (dev_type == FILE_DEVICE_DISK)
 146                         length = sprintf(buf, " type: DISK ");
 147                 else if (dev_type == FILE_DEVICE_CD_ROM)
 148                         length = sprintf(buf, " type: CDROM ");
 149                 else
 150                         length =
 151                             sprintf(buf, " type: %d ", dev_type);
 152                 buf += length;
 153                 if(tcon->tidStatus == CifsNeedReconnect) {
 154                         buf += sprintf(buf, "\tDISCONNECTED ");
 155                         length += 14;
 156                 }
 157         }
 158         read_unlock(&GlobalSMBSeslock);
 159
 160         length = sprintf(buf, "\n");
 161         buf += length;
 162
 163         /* BB add code to dump additional info such as TCP session info now */
 164         /* Now calculate total size of returned data */
 165         length = buf - original_buf;
 166
 167         if(offset + count >= length)
 168                 *eof = 1;
 169         if(length < offset) {
 170                 *eof = 1;
 171                 return 0;
 172         } else {
 173                 length = length - offset;
 174         }
 175         if (length > count)
 176                 length = count;
 177
 178         return length;
 179 }
 180
 181 #ifdef CONFIG_CIFS_STATS
 182 static int
 183 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 184                   int count, int *eof, void *data)
 185 {
 186         int item_length,i,length;
 187         struct list_head *tmp;
 188         struct cifsTconInfo *tcon;
 189
 190         *beginBuffer = buf + offset;
 191
 192         length = sprintf(buf,
 193                         "Resources in use\nCIFS Session: %d\n",
 194                         sesInfoAllocCount.counter);
 195         buf += length;
 196         item_length =
 197                 sprintf(buf,"Share (unique mount targets): %d\n",
 198                         tconInfoAllocCount.counter);
 199         length += item_length;
 200         buf += item_length;
 201         item_length =
 202                 sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
 203                         bufAllocCount.counter,cifs_min_rcv + tcpSesAllocCount.counter);
 204         length += item_length;
 205         buf += item_length;
 206         item_length =
 207                 sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 208                         smBufAllocCount.counter,cifs_min_small);
 209         length += item_length;
 210         buf += item_length;
 211         item_length =
 212                 sprintf(buf,"Operations (MIDs): %d\n",
 213                         midCount.counter);
 214         length += item_length;
 215         buf += item_length;
 216         item_length = sprintf(buf,
 217                 "\n%d session %d share reconnects\n",
 218                 tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
 219         length += item_length;
 220         buf += item_length;
 221
 222         item_length = sprintf(buf,
 223                 "Total vfs operations: %d maximum at one time: %d\n",
 224                 GlobalCurrentXid,GlobalMaxActiveXid);
 225         length += item_length;
 226         buf += item_length;
 227
 228         i = 0;
 229         read_lock(&GlobalSMBSeslock);
 230         list_for_each(tmp, &GlobalTreeConnectionList) {
 231                 i++;
 232                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 233                 item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
 234                 buf += item_length;
 235                 length += item_length;
 236                 if(tcon->tidStatus == CifsNeedReconnect) {
 237                         buf += sprintf(buf, "\tDISCONNECTED ");
 238                         length += 14;
 239                 }
 240                 item_length = sprintf(buf,"\nSMBs: %d Oplock Breaks: %d",
 241                         atomic_read(&tcon->num_smbs_sent),
 242                         atomic_read(&tcon->num_oplock_brks));
 243                 buf += item_length;
 244                 length += item_length;
 245                 item_length = sprintf(buf,"\nReads: %d Bytes %lld",
 246                         atomic_read(&tcon->num_reads),
 247                         (long long)(tcon->bytes_read));
 248                 buf += item_length;
 249                 length += item_length;
 250                 item_length = sprintf(buf,"\nWrites: %d Bytes: %lld",
 251                         atomic_read(&tcon->num_writes),
 252                         (long long)(tcon->bytes_written));
 253                 buf += item_length;
 254                 length += item_length;
 255                 item_length = sprintf(buf,
 256                         "\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
 257                         atomic_read(&tcon->num_opens),
 258                         atomic_read(&tcon->num_deletes),
 259                         atomic_read(&tcon->num_mkdirs),
 260                         atomic_read(&tcon->num_rmdirs));
 261                 buf += item_length;
 262                 length += item_length;
 263                 item_length = sprintf(buf,
 264                         "\nRenames: %d T2 Renames %d",
 265                         atomic_read(&tcon->num_renames),
 266                         atomic_read(&tcon->num_t2renames));
 267                 buf += item_length;
 268                 length += item_length;
 269         }
 270         read_unlock(&GlobalSMBSeslock);
 271
 272         buf += sprintf(buf,"\n");
 273         length++;
 274
 275         if(offset + count >= length)
 276                 *eof = 1;
 277         if(length < offset) {
 278                 *eof = 1;
 279                 return 0;
 280         } else {
 281                 length = length - offset;
 282         }
 283         if (length > count)
 284                 length = count;
 285
 286         return length;
 287 }
 288 #endif
 289
 290 static struct proc_dir_entry *proc_fs_cifs;
 291 read_proc_t cifs_txanchor_read;
 292 static read_proc_t cifsFYI_read;
 293 static write_proc_t cifsFYI_write;
 294 static read_proc_t oplockEnabled_read;
 295 static write_proc_t oplockEnabled_write;
 296 static read_proc_t lookupFlag_read;
 297 static write_proc_t lookupFlag_write;
 298 static read_proc_t traceSMB_read;
 299 static write_proc_t traceSMB_write;
 300 static read_proc_t multiuser_mount_read;
 301 static write_proc_t multiuser_mount_write;
 302 static read_proc_t extended_security_read;
 303 static write_proc_t extended_security_write;
 304 static read_proc_t ntlmv2_enabled_read;
 305 static write_proc_t ntlmv2_enabled_write;
 306 static read_proc_t packet_signing_enabled_read;
 307 static write_proc_t packet_signing_enabled_write;
 308 static read_proc_t quotaEnabled_read;
 309 static write_proc_t quotaEnabled_write;
 310 static read_proc_t linuxExtensionsEnabled_read;
 311 static write_proc_t linuxExtensionsEnabled_write;
 312
 313 void
 314 cifs_proc_init(void)
 315 {
 316         struct proc_dir_entry *pde;
 317
 318         proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
 319         if (proc_fs_cifs == NULL)
 320                 return;
 321
 322         proc_fs_cifs->owner = THIS_MODULE;
 323         create_proc_read_entry("DebugData", 0, proc_fs_cifs,
 324                                 cifs_debug_data_read, NULL);
 325
 326 #ifdef CONFIG_CIFS_STATS
 327         create_proc_read_entry("Stats", 0, proc_fs_cifs,
 328                                 cifs_stats_read, NULL);
 329 #endif
 330         pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 331                                 cifsFYI_read, NULL);
 332         if (pde)
 333                 pde->write_proc = cifsFYI_write;
 334
 335         pde =
 336             create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
 337                                 traceSMB_read, NULL);
 338         if (pde)
 339                 pde->write_proc = traceSMB_write;
 340
 341         pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
 342                                 oplockEnabled_read, NULL);
 343         if (pde)
 344                 pde->write_proc = oplockEnabled_write;
 345
 346         pde = create_proc_read_entry("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
 347                                 quotaEnabled_read, NULL);
 348         if (pde)
 349                 pde->write_proc = quotaEnabled_write;
 350
 351         pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 352                                 linuxExtensionsEnabled_read, NULL);
 353         if (pde)
 354                 pde->write_proc = linuxExtensionsEnabled_write;
 355
 356         pde =
 357             create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
 358                                 multiuser_mount_read, NULL);
 359         if (pde)
 360                 pde->write_proc = multiuser_mount_write;
 361
 362         pde =
 363             create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
 364                                 extended_security_read, NULL);
 365         if (pde)
 366                 pde->write_proc = extended_security_write;
 367
 368         pde =
 369         create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
 370                                 lookupFlag_read, NULL);
 371         if (pde)
 372                 pde->write_proc = lookupFlag_write;
 373
 374         pde =
 375             create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
 376                                 ntlmv2_enabled_read, NULL);
 377         if (pde)
 378                 pde->write_proc = ntlmv2_enabled_write;
 379
 380         pde =
 381             create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
 382                                 packet_signing_enabled_read, NULL);
 383         if (pde)
 384                 pde->write_proc = packet_signing_enabled_write;
 385 }
 386
 387 void
 388 cifs_proc_clean(void)
 389 {
 390         if (proc_fs_cifs == NULL)
 391                 return;
 392
 393         remove_proc_entry("DebugData", proc_fs_cifs);
 394         remove_proc_entry("cifsFYI", proc_fs_cifs);
 395         remove_proc_entry("traceSMB", proc_fs_cifs);
 396 #ifdef CONFIG_CIFS_STATS
 397         remove_proc_entry("Stats", proc_fs_cifs);
 398 #endif
 399         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 400         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 401         remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
 402         remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
 403         remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
 404         remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
 405         remove_proc_entry("ReenableOldCifsReaddirCode",proc_fs_cifs);
 406         remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
 407         remove_proc_entry("cifs", proc_root_fs);
 408 }
 409
 410 static int
 411 cifsFYI_read(char *page, char **start, off_t off, int count,
 412              int *eof, void *data)
 413 {
 414         int len;
 415
 416         len = sprintf(page, "%d\n", cifsFYI);
 417
 418         len -= off;
 419         *start = page + off;
 420
 421         if (len > count)
 422                 len = count;
 423         else
 424                 *eof = 1;
 425
 426         if (len < 0)
 427                 len = 0;
 428
 429         return len;
 430 }
 431 static int
 432 cifsFYI_write(struct file *file, const char __user *buffer,
 433               unsigned long count, void *data)
 434 {
 435         char c;
 436         int rc;
 437
 438         rc = get_user(c, buffer);
 439         if (rc)
 440                 return rc;
 441         if (c == '0' || c == 'n' || c == 'N')
 442                 cifsFYI = 0;
 443         else if (c == '1' || c == 'y' || c == 'Y')
 444                 cifsFYI = 1;
 445
 446         return count;
 447 }
 448
 449 static int
 450 oplockEnabled_read(char *page, char **start, off_t off,
 451                    int count, int *eof, void *data)
 452 {
 453         int len;
 454
 455         len = sprintf(page, "%d\n", oplockEnabled);
 456
 457         len -= off;
 458         *start = page + off;
 459
 460         if (len > count)
 461                 len = count;
 462         else
 463                 *eof = 1;
 464
 465         if (len < 0)
 466                 len = 0;
 467
 468         return len;
 469 }
 470 static int
 471 oplockEnabled_write(struct file *file, const char __user *buffer,
 472                     unsigned long count, void *data)
 473 {
 474         char c;
 475         int rc;
 476
 477         rc = get_user(c, buffer);
 478         if (rc)
 479                 return rc;
 480         if (c == '0' || c == 'n' || c == 'N')
 481                 oplockEnabled = 0;
 482         else if (c == '1' || c == 'y' || c == 'Y')
 483                 oplockEnabled = 1;
 484
 485         return count;
 486 }
 487
 488 static int
 489 quotaEnabled_read(char *page, char **start, off_t off,
 490                    int count, int *eof, void *data)
 491 {
 492         int len;
 493
 494         len = sprintf(page, "%d\n", experimEnabled);
 495 /* could also check if quotas are enabled in kernel
 496         as a whole first */
 497         len -= off;
 498         *start = page + off;
 499
 500         if (len > count)
 501                 len = count;
 502         else
 503                 *eof = 1;
 504
 505         if (len < 0)
 506                 len = 0;
 507
 508         return len;
 509 }
 510 static int
 511 quotaEnabled_write(struct file *file, const char __user *buffer,
 512                     unsigned long count, void *data)
 513 {
 514         char c;
 515         int rc;
 516
 517         rc = get_user(c, buffer);
 518         if (rc)
 519                 return rc;
 520         if (c == '0' || c == 'n' || c == 'N')
 521                 experimEnabled = 0;
 522         else if (c == '1' || c == 'y' || c == 'Y')
 523                 experimEnabled = 1;
 524
 525         return count;
 526 }
 527
 528 static int
 529 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
 530                    int count, int *eof, void *data)
 531 {
 532         int len;
 533
 534         len = sprintf(page, "%d\n", linuxExtEnabled);
 535 /* could also check if quotas are enabled in kernel
 536         as a whole first */
 537         len -= off;
 538         *start = page + off;
 539
 540         if (len > count)
 541                 len = count;
 542         else
 543                 *eof = 1;
 544
 545         if (len < 0)
 546                 len = 0;
 547
 548         return len;
 549 }
 550 static int
 551 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
 552                     unsigned long count, void *data)
 553 {
 554         char c;
 555         int rc;
 556
 557         rc = get_user(c, buffer);
 558         if (rc)
 559                 return rc;
 560         if (c == '0' || c == 'n' || c == 'N')
 561                 linuxExtEnabled = 0;
 562         else if (c == '1' || c == 'y' || c == 'Y')
 563                 linuxExtEnabled = 1;
 564
 565         return count;
 566 }
 567
 568
 569 static int
 570 lookupFlag_read(char *page, char **start, off_t off,
 571                    int count, int *eof, void *data)
 572 {
 573         int len;
 574
 575         len = sprintf(page, "%d\n", lookupCacheEnabled);
 576
 577         len -= off;
 578         *start = page + off;
 579
 580         if (len > count)
 581                 len = count;
 582         else
 583                 *eof = 1;
 584
 585         if (len < 0)
 586                 len = 0;
 587
 588         return len;
 589 }
 590 static int
 591 lookupFlag_write(struct file *file, const char __user *buffer,
 592                     unsigned long count, void *data)
 593 {
 594         char c;
 595         int rc;
 596
 597         rc = get_user(c, buffer);
 598         if (rc)
 599                 return rc;
 600         if (c == '0' || c == 'n' || c == 'N')
 601                 lookupCacheEnabled = 0;
 602         else if (c == '1' || c == 'y' || c == 'Y')
 603                 lookupCacheEnabled = 1;
 604
 605         return count;
 606 }
 607 static int
 608 traceSMB_read(char *page, char **start, off_t off, int count,
 609               int *eof, void *data)
 610 {
 611         int len;
 612
 613         len = sprintf(page, "%d\n", traceSMB);
 614
 615         len -= off;
 616         *start = page + off;
 617
 618         if (len > count)
 619                 len = count;
 620         else
 621                 *eof = 1;
 622
 623         if (len < 0)
 624                 len = 0;
 625
 626         return len;
 627 }
 628 static int
 629 traceSMB_write(struct file *file, const char __user *buffer,
 630                unsigned long count, void *data)
 631 {
 632         char c;
 633         int rc;
 634
 635         rc = get_user(c, buffer);
 636         if (rc)
 637                 return rc;
 638         if (c == '0' || c == 'n' || c == 'N')
 639                 traceSMB = 0;
 640         else if (c == '1' || c == 'y' || c == 'Y')
 641                 traceSMB = 1;
 642
 643         return count;
 644 }
 645
 646 static int
 647 multiuser_mount_read(char *page, char **start, off_t off,
 648                      int count, int *eof, void *data)
 649 {
 650         int len;
 651
 652         len = sprintf(page, "%d\n", multiuser_mount);
 653
 654         len -= off;
 655         *start = page + off;
 656
 657         if (len > count)
 658                 len = count;
 659         else
 660                 *eof = 1;
 661
 662         if (len < 0)
 663                 len = 0;
 664
 665         return len;
 666 }
 667 static int
 668 multiuser_mount_write(struct file *file, const char __user *buffer,
 669                       unsigned long count, void *data)
 670 {
 671         char c;
 672         int rc;
 673
 674         rc = get_user(c, buffer);
 675         if (rc)
 676                 return rc;
 677         if (c == '0' || c == 'n' || c == 'N')
 678                 multiuser_mount = 0;
 679         else if (c == '1' || c == 'y' || c == 'Y')
 680                 multiuser_mount = 1;
 681
 682         return count;
 683 }
 684
 685 static int
 686 extended_security_read(char *page, char **start, off_t off,
 687                        int count, int *eof, void *data)
 688 {
 689         int len;
 690
 691         len = sprintf(page, "%d\n", extended_security);
 692
 693         len -= off;
 694         *start = page + off;
 695
 696         if (len > count)
 697                 len = count;
 698         else
 699                 *eof = 1;
 700
 701         if (len < 0)
 702                 len = 0;
 703
 704         return len;
 705 }
 706 static int
 707 extended_security_write(struct file *file, const char __user *buffer,
 708                         unsigned long count, void *data)
 709 {
 710         char c;
 711         int rc;
 712
 713         rc = get_user(c, buffer);
 714         if (rc)
 715                 return rc;
 716         if (c == '0' || c == 'n' || c == 'N')
 717                 extended_security = 0;
 718         else if (c == '1' || c == 'y' || c == 'Y')
 719                 extended_security = 1;
 720
 721         return count;
 722 }
 723
 724 static int
 725 ntlmv2_enabled_read(char *page, char **start, off_t off,
 726                        int count, int *eof, void *data)
 727 {
 728         int len;
 729
 730         len = sprintf(page, "%d\n", ntlmv2_support);
 731
 732         len -= off;
 733         *start = page + off;
 734
 735         if (len > count)
 736                 len = count;
 737         else
 738                 *eof = 1;
 739
 740         if (len < 0)
 741                 len = 0;
 742
 743         return len;
 744 }
 745 static int
 746 ntlmv2_enabled_write(struct file *file, const char __user *buffer,
 747                         unsigned long count, void *data)
 748 {
 749         char c;
 750         int rc;
 751
 752         rc = get_user(c, buffer);
 753         if (rc)
 754                 return rc;
 755         if (c == '0' || c == 'n' || c == 'N')
 756                 ntlmv2_support = 0;
 757         else if (c == '1' || c == 'y' || c == 'Y')
 758                 ntlmv2_support = 1;
 759
 760         return count;
 761 }
 762
 763 static int
 764 packet_signing_enabled_read(char *page, char **start, off_t off,
 765                        int count, int *eof, void *data)
 766 {
 767         int len;
 768
 769         len = sprintf(page, "%d\n", sign_CIFS_PDUs);
 770
 771         len -= off;
 772         *start = page + off;
 773
 774         if (len > count)
 775                 len = count;
 776         else
 777                 *eof = 1;
 778
 779         if (len < 0)
 780                 len = 0;
 781
 782         return len;
 783 }
 784 static int
 785 packet_signing_enabled_write(struct file *file, const char __user *buffer,
 786                         unsigned long count, void *data)
 787 {
 788         char c;
 789         int rc;
 790
 791         rc = get_user(c, buffer);
 792         if (rc)
 793                 return rc;
 794         if (c == '0' || c == 'n' || c == 'N')
 795                 sign_CIFS_PDUs = 0;
 796         else if (c == '1' || c == 'y' || c == 'Y')
 797                 sign_CIFS_PDUs = 1;
 798         else if (c == '2')
 799                 sign_CIFS_PDUs = 2;
 800
 801         return count;
 802 }
 803
 804
 805 #endif