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   1 /*
   2  *   fs/cifs_debug.c
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2000,2005
   5  *
   6  *   Modified by Steve French (sfrench@us.ibm.com)
   7  *
   8  *   This program is free software;  you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16  *   the GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program;  if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  */
  22 #include <linux/fs.h>
  23 #include <linux/string.h>
  24 #include <linux/ctype.h>
  25 #include <linux/module.h>
  26 #include <linux/proc_fs.h>
  27 #include <asm/uaccess.h>
  28 #include "cifspdu.h"
  29 #include "cifsglob.h"
  30 #include "cifsproto.h"
  31 #include "cifs_debug.h"
  32 #include "cifsfs.h"
  33
  34 void
  35 cifs_dump_mem(char *label, void *data, int length)
  36 {
  37         int i, j;
  38         int *intptr = data;
  39         char *charptr = data;
  40         char buf[10], line[80];
  41
  42         printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
  43                 label, length, data);
  44         for (i = 0; i < length; i += 16) {
  45                 line[0] = 0;
  46                 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
  47                         sprintf(buf, " %08x", intptr[i / 4 + j]);
  48                         strcat(line, buf);
  49                 }
  50                 buf[0] = ' ';
  51                 buf[2] = 0;
  52                 for (j = 0; (j < 16) && (i + j < length); j++) {
  53                         buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
  54                         strcat(line, buf);
  55                 }
  56                 printk(KERN_DEBUG "%s\n", line);
  57         }
  58 }
  59
  60 #ifdef CONFIG_CIFS_DEBUG2
  61 void cifs_dump_detail(struct smb_hdr * smb)
  62 {
  63         cERROR(1,("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
  64                   smb->Command, smb->Status.CifsError,
  65                   smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
  66         cERROR(1,("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
  67 }
  68
  69
  70 void cifs_dump_mids(struct TCP_Server_Info * server)
  71 {
  72         struct list_head *tmp;
  73         struct mid_q_entry * mid_entry;
  74
  75         if(server == NULL)
  76                 return;
  77
  78         cERROR(1,("Dump pending requests:"));
  79         spin_lock(&GlobalMid_Lock);
  80         list_for_each(tmp, &server->pending_mid_q) {
  81                 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
  82                 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                                         mid_entry->resp_buf,
 102                                         62 /* fixme */);
 103                         }
 104
 105                 }
 106         }
 107         spin_unlock(&GlobalMid_Lock);
 108 }
 109 #endif /* CONFIG_CIFS_DEBUG2 */
 110
 111 #ifdef CONFIG_PROC_FS
 112 static int
 113 cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
 114                      int count, int *eof, void *data)
 115 {
 116         struct list_head *tmp;
 117         struct list_head *tmp1;
 118         struct mid_q_entry * mid_entry;
 119         struct cifsSesInfo *ses;
 120         struct cifsTconInfo *tcon;
 121         int i;
 122         int length = 0;
 123         char * original_buf = buf;
 124
 125         *beginBuffer = buf + offset;
 126
 127         length =
 128             sprintf(buf,
 129                     "Display Internal CIFS Data Structures for Debugging\n"
 130                     "---------------------------------------------------\n");
 131         buf += length;
 132         length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
 133         buf += length;
 134         length = sprintf(buf,"Active VFS Requests: %d\n", GlobalTotalActiveXid);
 135         buf += length;
 136         length = sprintf(buf, "Servers:");
 137         buf += length;
 138
 139         i = 0;
 140         read_lock(&GlobalSMBSeslock);
 141         list_for_each(tmp, &GlobalSMBSessionList) {
 142                 i++;
 143                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
 144                 if((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
 145                    (ses->serverNOS == NULL)) {
 146                         buf += sprintf("\nentry for %s not fully displayed\n\t",
 147                                         ses->serverName);
 148
 149                 } else {
 150                         length =
 151                             sprintf(buf,
 152                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS: %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB session status: %d\t",
 153                                 i, ses->serverName, ses->serverDomain,
 154                                 atomic_read(&ses->inUse),
 155                                 ses->serverOS, ses->serverNOS,
 156                                 ses->capabilities,ses->status);
 157                         buf += length;
 158                 }
 159                 if(ses->server) {
 160                         buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
 161                                 ses->server->tcpStatus,
 162                                 atomic_read(&ses->server->socketUseCount),
 163                                 ses->server->secMode,
 164                                 atomic_read(&ses->server->inFlight));
 165
 166 #ifdef CONFIG_CIFS_STATS2
 167                         buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
 168                                 atomic_read(&ses->server->inSend),
 169                                 atomic_read(&ses->server->num_waiters));
 170 #endif
 171
 172                         length = sprintf(buf, "\nMIDs:\n");
 173                         buf += length;
 174
 175                         spin_lock(&GlobalMid_Lock);
 176                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 177                                 mid_entry = list_entry(tmp1, struct
 178                                         mid_q_entry,
 179                                         qhead);
 180                                 if(mid_entry) {
 181                                         length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
 182                                                 mid_entry->midState,
 183                                                 (int)mid_entry->command,
 184                                                 mid_entry->pid,
 185                                                 mid_entry->tsk,
 186                                                 mid_entry->mid);
 187                                         buf += length;
 188                                 }
 189                         }
 190                         spin_unlock(&GlobalMid_Lock);
 191                 }
 192
 193         }
 194         read_unlock(&GlobalSMBSeslock);
 195         sprintf(buf, "\n");
 196         buf++;
 197
 198         length = sprintf(buf, "Shares:");
 199         buf += length;
 200
 201         i = 0;
 202         read_lock(&GlobalSMBSeslock);
 203         list_for_each(tmp, &GlobalTreeConnectionList) {
 204                 __u32 dev_type;
 205                 i++;
 206                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 207                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 208                 length =
 209                     sprintf(buf,
 210                             "\n%d) %s Uses: %d Type: %s DevInfo: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
 211                             i, tcon->treeName,
 212                             atomic_read(&tcon->useCount),
 213                             tcon->nativeFileSystem,
 214                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 215                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 216                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 217                             tcon->tidStatus);
 218                 buf += length;
 219                 if (dev_type == FILE_DEVICE_DISK)
 220                         length = sprintf(buf, " type: DISK ");
 221                 else if (dev_type == FILE_DEVICE_CD_ROM)
 222                         length = sprintf(buf, " type: CDROM ");
 223                 else
 224                         length =
 225                             sprintf(buf, " type: %d ", dev_type);
 226                 buf += length;
 227                 if(tcon->tidStatus == CifsNeedReconnect) {
 228                         buf += sprintf(buf, "\tDISCONNECTED ");
 229                         length += 14;
 230                 }
 231         }
 232         read_unlock(&GlobalSMBSeslock);
 233
 234         length = sprintf(buf, "\n");
 235         buf += length;
 236
 237         /* BB add code to dump additional info such as TCP session info now */
 238         /* Now calculate total size of returned data */
 239         length = buf - original_buf;
 240
 241         if(offset + count >= length)
 242                 *eof = 1;
 243         if(length < offset) {
 244                 *eof = 1;
 245                 return 0;
 246         } else {
 247                 length = length - offset;
 248         }
 249         if (length > count)
 250                 length = count;
 251
 252         return length;
 253 }
 254
 255 #ifdef CONFIG_CIFS_STATS
 256
 257 static int
 258 cifs_stats_write(struct file *file, const char __user *buffer,
 259                unsigned long count, void *data)
 260 {
 261         char c;
 262         int rc;
 263         struct list_head *tmp;
 264         struct cifsTconInfo *tcon;
 265
 266         rc = get_user(c, buffer);
 267         if (rc)
 268                 return rc;
 269
 270         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 271                 read_lock(&GlobalSMBSeslock);
 272 #ifdef CONFIG_CIFS_STATS2
 273                 atomic_set(&totBufAllocCount, 0);
 274                 atomic_set(&totSmBufAllocCount, 0);
 275 #endif /* CONFIG_CIFS_STATS2 */
 276                 list_for_each(tmp, &GlobalTreeConnectionList) {
 277                         tcon = list_entry(tmp, struct cifsTconInfo,
 278                                         cifsConnectionList);
 279                         atomic_set(&tcon->num_smbs_sent, 0);
 280                         atomic_set(&tcon->num_writes, 0);
 281                         atomic_set(&tcon->num_reads, 0);
 282                         atomic_set(&tcon->num_oplock_brks, 0);
 283                         atomic_set(&tcon->num_opens, 0);
 284                         atomic_set(&tcon->num_closes, 0);
 285                         atomic_set(&tcon->num_deletes, 0);
 286                         atomic_set(&tcon->num_mkdirs, 0);
 287                         atomic_set(&tcon->num_rmdirs, 0);
 288                         atomic_set(&tcon->num_renames, 0);
 289                         atomic_set(&tcon->num_t2renames, 0);
 290                         atomic_set(&tcon->num_ffirst, 0);
 291                         atomic_set(&tcon->num_fnext, 0);
 292                         atomic_set(&tcon->num_fclose, 0);
 293                         atomic_set(&tcon->num_hardlinks, 0);
 294                         atomic_set(&tcon->num_symlinks, 0);
 295                         atomic_set(&tcon->num_locks, 0);
 296                 }
 297                 read_unlock(&GlobalSMBSeslock);
 298         }
 299
 300         return count;
 301 }
 302
 303 static int
 304 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 305                   int count, int *eof, void *data)
 306 {
 307         int item_length,i,length;
 308         struct list_head *tmp;
 309         struct cifsTconInfo *tcon;
 310
 311         *beginBuffer = buf + offset;
 312
 313         length = sprintf(buf,
 314                         "Resources in use\nCIFS Session: %d\n",
 315                         sesInfoAllocCount.counter);
 316         buf += length;
 317         item_length =
 318                 sprintf(buf,"Share (unique mount targets): %d\n",
 319                         tconInfoAllocCount.counter);
 320         length += item_length;
 321         buf += item_length;
 322         item_length =
 323                 sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
 324                         bufAllocCount.counter,
 325                         cifs_min_rcv + tcpSesAllocCount.counter);
 326         length += item_length;
 327         buf += item_length;
 328         item_length =
 329                 sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 330                         smBufAllocCount.counter,cifs_min_small);
 331         length += item_length;
 332         buf += item_length;
 333 #ifdef CONFIG_CIFS_STATS2
 334         item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
 335                                 atomic_read(&totBufAllocCount),
 336                                 atomic_read(&totSmBufAllocCount));
 337         length += item_length;
 338         buf += item_length;
 339 #endif /* CONFIG_CIFS_STATS2 */
 340
 341         item_length =
 342                 sprintf(buf,"Operations (MIDs): %d\n",
 343                         midCount.counter);
 344         length += item_length;
 345         buf += item_length;
 346         item_length = sprintf(buf,
 347                 "\n%d session %d share reconnects\n",
 348                 tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
 349         length += item_length;
 350         buf += item_length;
 351
 352         item_length = sprintf(buf,
 353                 "Total vfs operations: %d maximum at one time: %d\n",
 354                 GlobalCurrentXid,GlobalMaxActiveXid);
 355         length += item_length;
 356         buf += item_length;
 357
 358         i = 0;
 359         read_lock(&GlobalSMBSeslock);
 360         list_for_each(tmp, &GlobalTreeConnectionList) {
 361                 i++;
 362                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 363                 item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
 364                 buf += item_length;
 365                 length += item_length;
 366                 if(tcon->tidStatus == CifsNeedReconnect) {
 367                         buf += sprintf(buf, "\tDISCONNECTED ");
 368                         length += 14;
 369                 }
 370                 item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
 371                         atomic_read(&tcon->num_smbs_sent),
 372                         atomic_read(&tcon->num_oplock_brks));
 373                 buf += item_length;
 374                 length += item_length;
 375                 item_length = sprintf(buf, "\nReads:  %d Bytes: %lld",
 376                         atomic_read(&tcon->num_reads),
 377                         (long long)(tcon->bytes_read));
 378                 buf += item_length;
 379                 length += item_length;
 380                 item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
 381                         atomic_read(&tcon->num_writes),
 382                         (long long)(tcon->bytes_written));
 383                 buf += item_length;
 384                 length += item_length;
 385                 item_length = sprintf(buf,
 386                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 387                         atomic_read(&tcon->num_locks),
 388                         atomic_read(&tcon->num_hardlinks),
 389                         atomic_read(&tcon->num_symlinks));
 390                 buf += item_length;
 391                 length += item_length;
 392
 393                 item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
 394                         atomic_read(&tcon->num_opens),
 395                         atomic_read(&tcon->num_closes),
 396                         atomic_read(&tcon->num_deletes));
 397                 buf += item_length;
 398                 length += item_length;
 399                 item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
 400                         atomic_read(&tcon->num_mkdirs),
 401                         atomic_read(&tcon->num_rmdirs));
 402                 buf += item_length;
 403                 length += item_length;
 404                 item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
 405                         atomic_read(&tcon->num_renames),
 406                         atomic_read(&tcon->num_t2renames));
 407                 buf += item_length;
 408                 length += item_length;
 409                 item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
 410                         atomic_read(&tcon->num_ffirst),
 411                         atomic_read(&tcon->num_fnext),
 412                         atomic_read(&tcon->num_fclose));
 413                 buf += item_length;
 414                 length += item_length;
 415         }
 416         read_unlock(&GlobalSMBSeslock);
 417
 418         buf += sprintf(buf,"\n");
 419         length++;
 420
 421         if(offset + count >= length)
 422                 *eof = 1;
 423         if(length < offset) {
 424                 *eof = 1;
 425                 return 0;
 426         } else {
 427                 length = length - offset;
 428         }
 429         if (length > count)
 430                 length = count;
 431
 432         return length;
 433 }
 434 #endif
 435
 436 static struct proc_dir_entry *proc_fs_cifs;
 437 read_proc_t cifs_txanchor_read;
 438 static read_proc_t cifsFYI_read;
 439 static write_proc_t cifsFYI_write;
 440 static read_proc_t oplockEnabled_read;
 441 static write_proc_t oplockEnabled_write;
 442 static read_proc_t lookupFlag_read;
 443 static write_proc_t lookupFlag_write;
 444 static read_proc_t traceSMB_read;
 445 static write_proc_t traceSMB_write;
 446 static read_proc_t multiuser_mount_read;
 447 static write_proc_t multiuser_mount_write;
 448 static read_proc_t security_flags_read;
 449 static write_proc_t security_flags_write;
 450 /* static read_proc_t ntlmv2_enabled_read;
 451 static write_proc_t ntlmv2_enabled_write;
 452 static read_proc_t packet_signing_enabled_read;
 453 static write_proc_t packet_signing_enabled_write;*/
 454 static read_proc_t experimEnabled_read;
 455 static write_proc_t experimEnabled_write;
 456 static read_proc_t linuxExtensionsEnabled_read;
 457 static write_proc_t linuxExtensionsEnabled_write;
 458
 459 void
 460 cifs_proc_init(void)
 461 {
 462         struct proc_dir_entry *pde;
 463
 464         proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
 465         if (proc_fs_cifs == NULL)
 466                 return;
 467
 468         proc_fs_cifs->owner = THIS_MODULE;
 469         create_proc_read_entry("DebugData", 0, proc_fs_cifs,
 470                                 cifs_debug_data_read, NULL);
 471
 472 #ifdef CONFIG_CIFS_STATS
 473         pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
 474                                 cifs_stats_read, NULL);
 475         if (pde)
 476                 pde->write_proc = cifs_stats_write;
 477 #endif
 478         pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 479                                 cifsFYI_read, NULL);
 480         if (pde)
 481                 pde->write_proc = cifsFYI_write;
 482
 483         pde =
 484             create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
 485                                 traceSMB_read, NULL);
 486         if (pde)
 487                 pde->write_proc = traceSMB_write;
 488
 489         pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
 490                                 oplockEnabled_read, NULL);
 491         if (pde)
 492                 pde->write_proc = oplockEnabled_write;
 493
 494         pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
 495                                 experimEnabled_read, NULL);
 496         if (pde)
 497                 pde->write_proc = experimEnabled_write;
 498
 499         pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 500                                 linuxExtensionsEnabled_read, NULL);
 501         if (pde)
 502                 pde->write_proc = linuxExtensionsEnabled_write;
 503
 504         pde =
 505             create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
 506                                 multiuser_mount_read, NULL);
 507         if (pde)
 508                 pde->write_proc = multiuser_mount_write;
 509
 510         pde =
 511             create_proc_read_entry("SecurityFlags", 0, proc_fs_cifs,
 512                                 security_flags_read, NULL);
 513         if (pde)
 514                 pde->write_proc = security_flags_write;
 515
 516         pde =
 517         create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
 518                                 lookupFlag_read, NULL);
 519         if (pde)
 520                 pde->write_proc = lookupFlag_write;
 521
 522 /*      pde =
 523             create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
 524                                 ntlmv2_enabled_read, NULL);
 525         if (pde)
 526                 pde->write_proc = ntlmv2_enabled_write;
 527
 528         pde =
 529             create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
 530                                 packet_signing_enabled_read, NULL);
 531         if (pde)
 532                 pde->write_proc = packet_signing_enabled_write;*/
 533 }
 534
 535 void
 536 cifs_proc_clean(void)
 537 {
 538         if (proc_fs_cifs == NULL)
 539                 return;
 540
 541         remove_proc_entry("DebugData", proc_fs_cifs);
 542         remove_proc_entry("cifsFYI", proc_fs_cifs);
 543         remove_proc_entry("traceSMB", proc_fs_cifs);
 544 #ifdef CONFIG_CIFS_STATS
 545         remove_proc_entry("Stats", proc_fs_cifs);
 546 #endif
 547         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 548         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 549 /*      remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */
 550         remove_proc_entry("SecurityFlags",proc_fs_cifs);
 551 /*      remove_proc_entry("PacketSigningEnabled",proc_fs_cifs); */
 552         remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
 553         remove_proc_entry("Experimental",proc_fs_cifs);
 554         remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
 555         remove_proc_entry("cifs", proc_root_fs);
 556 }
 557
 558 static int
 559 cifsFYI_read(char *page, char **start, off_t off, int count,
 560              int *eof, void *data)
 561 {
 562         int len;
 563
 564         len = sprintf(page, "%d\n", cifsFYI);
 565
 566         len -= off;
 567         *start = page + off;
 568
 569         if (len > count)
 570                 len = count;
 571         else
 572                 *eof = 1;
 573
 574         if (len < 0)
 575                 len = 0;
 576
 577         return len;
 578 }
 579 static int
 580 cifsFYI_write(struct file *file, const char __user *buffer,
 581               unsigned long count, void *data)
 582 {
 583         char c;
 584         int rc;
 585
 586         rc = get_user(c, buffer);
 587         if (rc)
 588                 return rc;
 589         if (c == '0' || c == 'n' || c == 'N')
 590                 cifsFYI = 0;
 591         else if (c == '1' || c == 'y' || c == 'Y')
 592                 cifsFYI = 1;
 593         else if((c > '1') && (c <= '9'))
 594                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 595
 596         return count;
 597 }
 598
 599 static int
 600 oplockEnabled_read(char *page, char **start, off_t off,
 601                    int count, int *eof, void *data)
 602 {
 603         int len;
 604
 605         len = sprintf(page, "%d\n", oplockEnabled);
 606
 607         len -= off;
 608         *start = page + off;
 609
 610         if (len > count)
 611                 len = count;
 612         else
 613                 *eof = 1;
 614
 615         if (len < 0)
 616                 len = 0;
 617
 618         return len;
 619 }
 620 static int
 621 oplockEnabled_write(struct file *file, const char __user *buffer,
 622                     unsigned long count, void *data)
 623 {
 624         char c;
 625         int rc;
 626
 627         rc = get_user(c, buffer);
 628         if (rc)
 629                 return rc;
 630         if (c == '0' || c == 'n' || c == 'N')
 631                 oplockEnabled = 0;
 632         else if (c == '1' || c == 'y' || c == 'Y')
 633                 oplockEnabled = 1;
 634
 635         return count;
 636 }
 637
 638 static int
 639 experimEnabled_read(char *page, char **start, off_t off,
 640                    int count, int *eof, void *data)
 641 {
 642         int len;
 643
 644         len = sprintf(page, "%d\n", experimEnabled);
 645
 646         len -= off;
 647         *start = page + off;
 648
 649         if (len > count)
 650                 len = count;
 651         else
 652                 *eof = 1;
 653
 654         if (len < 0)
 655                 len = 0;
 656
 657         return len;
 658 }
 659 static int
 660 experimEnabled_write(struct file *file, const char __user *buffer,
 661                     unsigned long count, void *data)
 662 {
 663         char c;
 664         int rc;
 665
 666         rc = get_user(c, buffer);
 667         if (rc)
 668                 return rc;
 669         if (c == '0' || c == 'n' || c == 'N')
 670                 experimEnabled = 0;
 671         else if (c == '1' || c == 'y' || c == 'Y')
 672                 experimEnabled = 1;
 673         else if (c == '2')
 674                 experimEnabled = 2;
 675
 676         return count;
 677 }
 678
 679 static int
 680 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
 681                    int count, int *eof, void *data)
 682 {
 683         int len;
 684
 685         len = sprintf(page, "%d\n", linuxExtEnabled);
 686         len -= off;
 687         *start = page + off;
 688
 689         if (len > count)
 690                 len = count;
 691         else
 692                 *eof = 1;
 693
 694         if (len < 0)
 695                 len = 0;
 696
 697         return len;
 698 }
 699 static int
 700 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
 701                     unsigned long count, void *data)
 702 {
 703         char c;
 704         int rc;
 705
 706         rc = get_user(c, buffer);
 707         if (rc)
 708                 return rc;
 709         if (c == '0' || c == 'n' || c == 'N')
 710                 linuxExtEnabled = 0;
 711         else if (c == '1' || c == 'y' || c == 'Y')
 712                 linuxExtEnabled = 1;
 713
 714         return count;
 715 }
 716
 717
 718 static int
 719 lookupFlag_read(char *page, char **start, off_t off,
 720                    int count, int *eof, void *data)
 721 {
 722         int len;
 723
 724         len = sprintf(page, "%d\n", lookupCacheEnabled);
 725
 726         len -= off;
 727         *start = page + off;
 728
 729         if (len > count)
 730                 len = count;
 731         else
 732                 *eof = 1;
 733
 734         if (len < 0)
 735                 len = 0;
 736
 737         return len;
 738 }
 739 static int
 740 lookupFlag_write(struct file *file, const char __user *buffer,
 741                     unsigned long count, void *data)
 742 {
 743         char c;
 744         int rc;
 745
 746         rc = get_user(c, buffer);
 747         if (rc)
 748                 return rc;
 749         if (c == '0' || c == 'n' || c == 'N')
 750                 lookupCacheEnabled = 0;
 751         else if (c == '1' || c == 'y' || c == 'Y')
 752                 lookupCacheEnabled = 1;
 753
 754         return count;
 755 }
 756 static int
 757 traceSMB_read(char *page, char **start, off_t off, int count,
 758               int *eof, void *data)
 759 {
 760         int len;
 761
 762         len = sprintf(page, "%d\n", traceSMB);
 763
 764         len -= off;
 765         *start = page + off;
 766
 767         if (len > count)
 768                 len = count;
 769         else
 770                 *eof = 1;
 771
 772         if (len < 0)
 773                 len = 0;
 774
 775         return len;
 776 }
 777 static int
 778 traceSMB_write(struct file *file, const char __user *buffer,
 779                unsigned long count, void *data)
 780 {
 781         char c;
 782         int rc;
 783
 784         rc = get_user(c, buffer);
 785         if (rc)
 786                 return rc;
 787         if (c == '0' || c == 'n' || c == 'N')
 788                 traceSMB = 0;
 789         else if (c == '1' || c == 'y' || c == 'Y')
 790                 traceSMB = 1;
 791
 792         return count;
 793 }
 794
 795 static int
 796 multiuser_mount_read(char *page, char **start, off_t off,
 797                      int count, int *eof, void *data)
 798 {
 799         int len;
 800
 801         len = sprintf(page, "%d\n", multiuser_mount);
 802
 803         len -= off;
 804         *start = page + off;
 805
 806         if (len > count)
 807                 len = count;
 808         else
 809                 *eof = 1;
 810
 811         if (len < 0)
 812                 len = 0;
 813
 814         return len;
 815 }
 816 static int
 817 multiuser_mount_write(struct file *file, const char __user *buffer,
 818                       unsigned long count, void *data)
 819 {
 820         char c;
 821         int rc;
 822
 823         rc = get_user(c, buffer);
 824         if (rc)
 825                 return rc;
 826         if (c == '0' || c == 'n' || c == 'N')
 827                 multiuser_mount = 0;
 828         else if (c == '1' || c == 'y' || c == 'Y')
 829                 multiuser_mount = 1;
 830
 831         return count;
 832 }
 833
 834 static int
 835 security_flags_read(char *page, char **start, off_t off,
 836                        int count, int *eof, void *data)
 837 {
 838         int len;
 839
 840         len = sprintf(page, "0x%x\n", extended_security);
 841
 842         len -= off;
 843         *start = page + off;
 844
 845         if (len > count)
 846                 len = count;
 847         else
 848                 *eof = 1;
 849
 850         if (len < 0)
 851                 len = 0;
 852
 853         return len;
 854 }
 855 static int
 856 security_flags_write(struct file *file, const char __user *buffer,
 857                         unsigned long count, void *data)
 858 {
 859         unsigned int flags;
 860         char flags_string[12];
 861         char c;
 862
 863         if((count < 1) || (count > 11))
 864                 return -EINVAL;
 865
 866         memset(flags_string, 0, 12);
 867
 868         if(copy_from_user(flags_string, buffer, count))
 869                 return -EFAULT;
 870
 871         if(count < 3) {
 872                 /* single char or single char followed by null */
 873                 c = flags_string[0];
 874                 if (c == '0' || c == 'n' || c == 'N')
 875                         extended_security = CIFSSEC_DEF; /* default */
 876                 else if (c == '1' || c == 'y' || c == 'Y')
 877                         extended_security = CIFSSEC_MAX;
 878                 return count;
 879         }
 880         /* else we have a number */
 881
 882         flags = simple_strtoul(flags_string, NULL, 0);
 883
 884         cFYI(1,("sec flags 0x%x", flags));
 885
 886         if(flags <= 0)  {
 887                 cERROR(1,("invalid security flags %s",flags_string));
 888                 return -EINVAL;
 889         }
 890
 891         if(flags & ~CIFSSEC_MASK) {
 892                 cERROR(1,("attempt to set unsupported security flags 0x%x",
 893                         flags & ~CIFSSEC_MASK));
 894                 return -EINVAL;
 895         }
 896         /* flags look ok - update the global security flags for cifs module */
 897         extended_security = flags;
 898         return count;
 899 }
 900
 901 /* static int
 902 ntlmv2_enabled_read(char *page, char **start, off_t off,
 903                        int count, int *eof, void *data)
 904 {
 905         int len;
 906
 907         len = sprintf(page, "%d\n", ntlmv2_support);
 908
 909         len -= off;
 910         *start = page + off;
 911
 912         if (len > count)
 913                 len = count;
 914         else
 915                 *eof = 1;
 916
 917         if (len < 0)
 918                 len = 0;
 919
 920         return len;
 921 }
 922 static int
 923 ntlmv2_enabled_write(struct file *file, const char __user *buffer,
 924                         unsigned long count, void *data)
 925 {
 926         char c;
 927         int rc;
 928
 929         rc = get_user(c, buffer);
 930         if (rc)
 931                 return rc;
 932         if (c == '0' || c == 'n' || c == 'N')
 933                 ntlmv2_support = 0;
 934         else if (c == '1' || c == 'y' || c == 'Y')
 935                 ntlmv2_support = 1;
 936         else if (c == '2')
 937                 ntlmv2_support = 2;
 938
 939         return count;
 940 }
 941
 942 static int
 943 packet_signing_enabled_read(char *page, char **start, off_t off,
 944                        int count, int *eof, void *data)
 945 {
 946         int len;
 947
 948         len = sprintf(page, "%d\n", sign_CIFS_PDUs);
 949
 950         len -= off;
 951         *start = page + off;
 952
 953         if (len > count)
 954                 len = count;
 955         else
 956                 *eof = 1;
 957
 958         if (len < 0)
 959                 len = 0;
 960
 961         return len;
 962 }
 963 static int
 964 packet_signing_enabled_write(struct file *file, const char __user *buffer,
 965                         unsigned long count, void *data)
 966 {
 967         char c;
 968         int rc;
 969
 970         rc = get_user(c, buffer);
 971         if (rc)
 972                 return rc;
 973         if (c == '0' || c == 'n' || c == 'N')
 974                 sign_CIFS_PDUs = 0;
 975         else if (c == '1' || c == 'y' || c == 'Y')
 976                 sign_CIFS_PDUs = 1;
 977         else if (c == '2')
 978                 sign_CIFS_PDUs = 2;
 979
 980         return count;
 981 } */
 982
 983
 984 #endif