fs/cifs/cifs_debug.c

   1 /*
   2  *   fs/cifs_debug.c
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2000,2005
   5  *
   6  *   Modified by Steve French (sfrench@us.ibm.com)
   7  *
   8  *   This program is free software;  you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16  *   the GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program;  if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  */
  22 #include <linux/fs.h>
  23 #include <linux/string.h>
  24 #include <linux/ctype.h>
  25 #include <linux/module.h>
  26 #include <linux/proc_fs.h>
  27 #include <asm/uaccess.h>
  28 #include "cifspdu.h"
  29 #include "cifsglob.h"
  30 #include "cifsproto.h"
  31 #include "cifs_debug.h"
  32 #include "cifsfs.h"
  33
  34 void
  35 cifs_dump_mem(char *label, void *data, int length)
  36 {
  37         int i, j;
  38         int *intptr = data;
  39         char *charptr = data;
  40         char buf[10], line[80];
  41
  42         printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
  43                 label, length, data);
  44         for (i = 0; i < length; i += 16) {
  45                 line[0] = 0;
  46                 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
  47                         sprintf(buf, " %08x", intptr[i / 4 + j]);
  48                         strcat(line, buf);
  49                 }
  50                 buf[0] = ' ';
  51                 buf[2] = 0;
  52                 for (j = 0; (j < 16) && (i + j < length); j++) {
  53                         buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
  54                         strcat(line, buf);
  55                 }
  56                 printk(KERN_DEBUG "%s\n", line);
  57         }
  58 }
  59
  60 #ifdef CONFIG_CIFS_DEBUG2
  61 void cifs_dump_detail(struct smb_hdr *smb)
  62 {
  63         cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
  64                   smb->Command, smb->Status.CifsError,
  65                   smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
  66         cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
  67 }
  68
  69
  70 void cifs_dump_mids(struct TCP_Server_Info *server)
  71 {
  72         struct list_head *tmp;
  73         struct mid_q_entry *mid_entry;
  74
  75         if (server == NULL)
  76                 return;
  77
  78         cERROR(1, ("Dump pending requests:"));
  79         spin_lock(&GlobalMid_Lock);
  80         list_for_each(tmp, &server->pending_mid_q) {
  81                 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
  82                 if (mid_entry) {
  83                         cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
  84                                 mid_entry->midState,
  85                                 (int)mid_entry->command,
  86                                 mid_entry->pid,
  87                                 mid_entry->tsk,
  88                                 mid_entry->mid));
  89 #ifdef CONFIG_CIFS_STATS2
  90                         cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
  91                                 mid_entry->largeBuf,
  92                                 mid_entry->resp_buf,
  93                                 mid_entry->when_received,
  94                                 jiffies));
  95 #endif /* STATS2 */
  96                         cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
  97                                   mid_entry->multiEnd));
  98                         if (mid_entry->resp_buf) {
  99                                 cifs_dump_detail(mid_entry->resp_buf);
 100                                 cifs_dump_mem("existing buf: ",
 101                                         mid_entry->resp_buf, 62);
 102                         }
 103                 }
 104         }
 105         spin_unlock(&GlobalMid_Lock);
 106 }
 107 #endif /* CONFIG_CIFS_DEBUG2 */
 108
 109 #ifdef CONFIG_PROC_FS
 110 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 111 {
 112         struct list_head *tmp;
 113         struct list_head *tmp1;
 114         struct mid_q_entry *mid_entry;
 115         struct cifsSesInfo *ses;
 116         struct cifsTconInfo *tcon;
 117         int i;
 118
 119         seq_puts(m,
 120                     "Display Internal CIFS Data Structures for Debugging\n"
 121                     "---------------------------------------------------\n");
 122         seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 123         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 124         seq_printf(m, "Servers:");
 125
 126         i = 0;
 127         read_lock(&GlobalSMBSeslock);
 128         list_for_each(tmp, &GlobalSMBSessionList) {
 129                 i++;
 130                 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
 131                 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
 132                    (ses->serverNOS == NULL)) {
 133                         seq_printf(m, "\nentry for %s not fully "
 134                                         "displayed\n\t", ses->serverName);
 135                 } else {
 136                         seq_printf(m,
 137                                     "\n%d) Name: %s  Domain: %s Mounts: %d OS:"
 138                                     " %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 139                                     " session status: %d\t",
 140                                 i, ses->serverName, ses->serverDomain,
 141                                 atomic_read(&ses->inUse),
 142                                 ses->serverOS, ses->serverNOS,
 143                                 ses->capabilities, ses->status);
 144                 }
 145                 if (ses->server) {
 146                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 147                                     "Server: %d SecMode: 0x%x Req On Wire: %d",
 148                                 ses->server->tcpStatus,
 149                                 atomic_read(&ses->server->socketUseCount),
 150                                 ses->server->secMode,
 151                                 atomic_read(&ses->server->inFlight));
 152
 153 #ifdef CONFIG_CIFS_STATS2
 154                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 155                                 atomic_read(&ses->server->inSend),
 156                                 atomic_read(&ses->server->num_waiters));
 157 #endif
 158
 159                         seq_puts(m, "\nMIDs:\n");
 160
 161                         spin_lock(&GlobalMid_Lock);
 162                         list_for_each(tmp1, &ses->server->pending_mid_q) {
 163                                 mid_entry = list_entry(tmp1, struct
 164                                         mid_q_entry,
 165                                         qhead);
 166                                 if (mid_entry) {
 167                                         seq_printf(m,
 168                                                         "State: %d com: %d pid:"
 169                                                         " %d tsk: %p mid %d\n",
 170                                                         mid_entry->midState,
 171                                                         (int)mid_entry->command,
 172                                                         mid_entry->pid,
 173                                                         mid_entry->tsk,
 174                                                         mid_entry->mid);
 175                                 }
 176                         }
 177                         spin_unlock(&GlobalMid_Lock);
 178                 }
 179
 180         }
 181         read_unlock(&GlobalSMBSeslock);
 182         seq_putc(m, '\n');
 183
 184         seq_puts(m, "Shares:");
 185
 186         i = 0;
 187         read_lock(&GlobalSMBSeslock);
 188         list_for_each(tmp, &GlobalTreeConnectionList) {
 189                 __u32 dev_type;
 190                 i++;
 191                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 192                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 193                 seq_printf(m, "\n%d) %s Uses: %d ", i,
 194                                  tcon->treeName, atomic_read(&tcon->useCount));
 195                 if (tcon->nativeFileSystem) {
 196                         seq_printf(m, "Type: %s ",
 197                                          tcon->nativeFileSystem);
 198                 }
 199                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 200                                  "\nPathComponentMax: %d Status: %d",
 201                             le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 202                             le32_to_cpu(tcon->fsAttrInfo.Attributes),
 203                             le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 204                             tcon->tidStatus);
 205                 if (dev_type == FILE_DEVICE_DISK)
 206                         seq_puts(m, " type: DISK ");
 207                 else if (dev_type == FILE_DEVICE_CD_ROM)
 208                         seq_puts(m, " type: CDROM ");
 209                 else
 210                         seq_printf(m, " type: %d ", dev_type);
 211
 212                 if (tcon->tidStatus == CifsNeedReconnect)
 213                         seq_puts(m, "\tDISCONNECTED ");
 214         }
 215         read_unlock(&GlobalSMBSeslock);
 216
 217         seq_putc(m, '\n');
 218
 219         /* BB add code to dump additional info such as TCP session info now */
 220         return 0;
 221 }
 222
 223 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 224 {
 225         return single_open(file, cifs_debug_data_proc_show, NULL);
 226 }
 227
 228 static const struct file_operations cifs_debug_data_proc_fops = {
 229         .owner          = THIS_MODULE,
 230         .open           = cifs_debug_data_proc_open,
 231         .read           = seq_read,
 232         .llseek         = seq_lseek,
 233         .release        = single_release,
 234 };
 235
 236 #ifdef CONFIG_CIFS_STATS
 237 static ssize_t cifs_stats_proc_write(struct file *file,
 238                 const char __user *buffer, size_t count, loff_t *ppos)
 239 {
 240         char c;
 241         int rc;
 242         struct list_head *tmp;
 243         struct cifsTconInfo *tcon;
 244
 245         rc = get_user(c, buffer);
 246         if (rc)
 247                 return rc;
 248
 249         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 250                 read_lock(&GlobalSMBSeslock);
 251 #ifdef CONFIG_CIFS_STATS2
 252                 atomic_set(&totBufAllocCount, 0);
 253                 atomic_set(&totSmBufAllocCount, 0);
 254 #endif /* CONFIG_CIFS_STATS2 */
 255                 list_for_each(tmp, &GlobalTreeConnectionList) {
 256                         tcon = list_entry(tmp, struct cifsTconInfo,
 257                                         cifsConnectionList);
 258                         atomic_set(&tcon->num_smbs_sent, 0);
 259                         atomic_set(&tcon->num_writes, 0);
 260                         atomic_set(&tcon->num_reads, 0);
 261                         atomic_set(&tcon->num_oplock_brks, 0);
 262                         atomic_set(&tcon->num_opens, 0);
 263                         atomic_set(&tcon->num_closes, 0);
 264                         atomic_set(&tcon->num_deletes, 0);
 265                         atomic_set(&tcon->num_mkdirs, 0);
 266                         atomic_set(&tcon->num_rmdirs, 0);
 267                         atomic_set(&tcon->num_renames, 0);
 268                         atomic_set(&tcon->num_t2renames, 0);
 269                         atomic_set(&tcon->num_ffirst, 0);
 270                         atomic_set(&tcon->num_fnext, 0);
 271                         atomic_set(&tcon->num_fclose, 0);
 272                         atomic_set(&tcon->num_hardlinks, 0);
 273                         atomic_set(&tcon->num_symlinks, 0);
 274                         atomic_set(&tcon->num_locks, 0);
 275                 }
 276                 read_unlock(&GlobalSMBSeslock);
 277         }
 278
 279         return count;
 280 }
 281
 282 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 283 {
 284         int i;
 285         struct list_head *tmp;
 286         struct cifsTconInfo *tcon;
 287
 288         seq_printf(m,
 289                         "Resources in use\nCIFS Session: %d\n",
 290                         sesInfoAllocCount.counter);
 291         seq_printf(m, "Share (unique mount targets): %d\n",
 292                         tconInfoAllocCount.counter);
 293         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 294                         bufAllocCount.counter,
 295                         cifs_min_rcv + tcpSesAllocCount.counter);
 296         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 297                         smBufAllocCount.counter, cifs_min_small);
 298 #ifdef CONFIG_CIFS_STATS2
 299         seq_printf(m, "Total Large %d Small %d Allocations\n",
 300                                 atomic_read(&totBufAllocCount),
 301                                 atomic_read(&totSmBufAllocCount));
 302 #endif /* CONFIG_CIFS_STATS2 */
 303
 304         seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
 305         seq_printf(m,
 306                 "\n%d session %d share reconnects\n",
 307                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 308
 309         seq_printf(m,
 310                 "Total vfs operations: %d maximum at one time: %d\n",
 311                 GlobalCurrentXid, GlobalMaxActiveXid);
 312
 313         i = 0;
 314         read_lock(&GlobalSMBSeslock);
 315         list_for_each(tmp, &GlobalTreeConnectionList) {
 316                 i++;
 317                 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
 318                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 319                 if (tcon->tidStatus == CifsNeedReconnect)
 320                         seq_puts(m, "\tDISCONNECTED ");
 321                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 322                         atomic_read(&tcon->num_smbs_sent),
 323                         atomic_read(&tcon->num_oplock_brks));
 324                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 325                         atomic_read(&tcon->num_reads),
 326                         (long long)(tcon->bytes_read));
 327                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 328                         atomic_read(&tcon->num_writes),
 329                         (long long)(tcon->bytes_written));
 330                 seq_printf(m,
 331                         "\nLocks: %d HardLinks: %d Symlinks: %d",
 332                         atomic_read(&tcon->num_locks),
 333                         atomic_read(&tcon->num_hardlinks),
 334                         atomic_read(&tcon->num_symlinks));
 335
 336                 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
 337                         atomic_read(&tcon->num_opens),
 338                         atomic_read(&tcon->num_closes),
 339                         atomic_read(&tcon->num_deletes));
 340                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 341                         atomic_read(&tcon->num_mkdirs),
 342                         atomic_read(&tcon->num_rmdirs));
 343                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 344                         atomic_read(&tcon->num_renames),
 345                         atomic_read(&tcon->num_t2renames));
 346                 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
 347                         atomic_read(&tcon->num_ffirst),
 348                         atomic_read(&tcon->num_fnext),
 349                         atomic_read(&tcon->num_fclose));
 350         }
 351         read_unlock(&GlobalSMBSeslock);
 352
 353         seq_putc(m, '\n');
 354         return 0;
 355 }
 356
 357 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 358 {
 359         return single_open(file, cifs_stats_proc_show, NULL);
 360 }
 361
 362 static const struct file_operations cifs_stats_proc_fops = {
 363         .owner          = THIS_MODULE,
 364         .open           = cifs_stats_proc_open,
 365         .read           = seq_read,
 366         .llseek         = seq_lseek,
 367         .release        = single_release,
 368         .write          = cifs_stats_proc_write,
 369 };
 370 #endif /* STATS */
 371
 372 static struct proc_dir_entry *proc_fs_cifs;
 373 static const struct file_operations cifsFYI_proc_fops;
 374 static const struct file_operations cifs_oplock_proc_fops;
 375 static const struct file_operations cifs_lookup_cache_proc_fops;
 376 static const struct file_operations traceSMB_proc_fops;
 377 static const struct file_operations cifs_multiuser_mount_proc_fops;
 378 static const struct file_operations cifs_security_flags_proc_fops;
 379 static const struct file_operations cifs_experimental_proc_fops;
 380 static const struct file_operations cifs_linux_ext_proc_fops;
 381
 382 void
 383 cifs_proc_init(void)
 384 {
 385         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 386         if (proc_fs_cifs == NULL)
 387                 return;
 388
 389         proc_fs_cifs->owner = THIS_MODULE;
 390         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 391
 392 #ifdef CONFIG_CIFS_STATS
 393         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 394 #endif /* STATS */
 395         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 396         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 397         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 398         proc_create("Experimental", 0, proc_fs_cifs,
 399                     &cifs_experimental_proc_fops);
 400         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 401                     &cifs_linux_ext_proc_fops);
 402         proc_create("MultiuserMount", 0, proc_fs_cifs,
 403                     &cifs_multiuser_mount_proc_fops);
 404         proc_create("SecurityFlags", 0, proc_fs_cifs,
 405                     &cifs_security_flags_proc_fops);
 406         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 407                     &cifs_lookup_cache_proc_fops);
 408 }
 409
 410 void
 411 cifs_proc_clean(void)
 412 {
 413         if (proc_fs_cifs == NULL)
 414                 return;
 415
 416         remove_proc_entry("DebugData", proc_fs_cifs);
 417         remove_proc_entry("cifsFYI", proc_fs_cifs);
 418         remove_proc_entry("traceSMB", proc_fs_cifs);
 419 #ifdef CONFIG_CIFS_STATS
 420         remove_proc_entry("Stats", proc_fs_cifs);
 421 #endif
 422         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 423         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 424         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 425         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 426         remove_proc_entry("Experimental", proc_fs_cifs);
 427         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 428         remove_proc_entry("fs/cifs", NULL);
 429 }
 430
 431 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 432 {
 433         seq_printf(m, "%d\n", cifsFYI);
 434         return 0;
 435 }
 436
 437 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 438 {
 439         return single_open(file, cifsFYI_proc_show, NULL);
 440 }
 441
 442 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 443                 size_t count, loff_t *ppos)
 444 {
 445         char c;
 446         int rc;
 447
 448         rc = get_user(c, buffer);
 449         if (rc)
 450                 return rc;
 451         if (c == '0' || c == 'n' || c == 'N')
 452                 cifsFYI = 0;
 453         else if (c == '1' || c == 'y' || c == 'Y')
 454                 cifsFYI = 1;
 455         else if ((c > '1') && (c <= '9'))
 456                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 457
 458         return count;
 459 }
 460
 461 static const struct file_operations cifsFYI_proc_fops = {
 462         .owner          = THIS_MODULE,
 463         .open           = cifsFYI_proc_open,
 464         .read           = seq_read,
 465         .llseek         = seq_lseek,
 466         .release        = single_release,
 467         .write          = cifsFYI_proc_write,
 468 };
 469
 470 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 471 {
 472         seq_printf(m, "%d\n", oplockEnabled);
 473         return 0;
 474 }
 475
 476 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 477 {
 478         return single_open(file, cifs_oplock_proc_show, NULL);
 479 }
 480
 481 static ssize_t cifs_oplock_proc_write(struct file *file,
 482                 const char __user *buffer, size_t count, loff_t *ppos)
 483 {
 484         char c;
 485         int rc;
 486
 487         rc = get_user(c, buffer);
 488         if (rc)
 489                 return rc;
 490         if (c == '0' || c == 'n' || c == 'N')
 491                 oplockEnabled = 0;
 492         else if (c == '1' || c == 'y' || c == 'Y')
 493                 oplockEnabled = 1;
 494
 495         return count;
 496 }
 497
 498 static const struct file_operations cifs_oplock_proc_fops = {
 499         .owner          = THIS_MODULE,
 500         .open           = cifs_oplock_proc_open,
 501         .read           = seq_read,
 502         .llseek         = seq_lseek,
 503         .release        = single_release,
 504         .write          = cifs_oplock_proc_write,
 505 };
 506
 507 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
 508 {
 509         seq_printf(m, "%d\n", experimEnabled);
 510         return 0;
 511 }
 512
 513 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
 514 {
 515         return single_open(file, cifs_experimental_proc_show, NULL);
 516 }
 517
 518 static ssize_t cifs_experimental_proc_write(struct file *file,
 519                 const char __user *buffer, size_t count, loff_t *ppos)
 520 {
 521         char c;
 522         int rc;
 523
 524         rc = get_user(c, buffer);
 525         if (rc)
 526                 return rc;
 527         if (c == '0' || c == 'n' || c == 'N')
 528                 experimEnabled = 0;
 529         else if (c == '1' || c == 'y' || c == 'Y')
 530                 experimEnabled = 1;
 531         else if (c == '2')
 532                 experimEnabled = 2;
 533
 534         return count;
 535 }
 536
 537 static const struct file_operations cifs_experimental_proc_fops = {
 538         .owner          = THIS_MODULE,
 539         .open           = cifs_experimental_proc_open,
 540         .read           = seq_read,
 541         .llseek         = seq_lseek,
 542         .release        = single_release,
 543         .write          = cifs_experimental_proc_write,
 544 };
 545
 546 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 547 {
 548         seq_printf(m, "%d\n", linuxExtEnabled);
 549         return 0;
 550 }
 551
 552 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 553 {
 554         return single_open(file, cifs_linux_ext_proc_show, NULL);
 555 }
 556
 557 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 558                 const char __user *buffer, size_t count, loff_t *ppos)
 559 {
 560         char c;
 561         int rc;
 562
 563         rc = get_user(c, buffer);
 564         if (rc)
 565                 return rc;
 566         if (c == '0' || c == 'n' || c == 'N')
 567                 linuxExtEnabled = 0;
 568         else if (c == '1' || c == 'y' || c == 'Y')
 569                 linuxExtEnabled = 1;
 570
 571         return count;
 572 }
 573
 574 static const struct file_operations cifs_linux_ext_proc_fops = {
 575         .owner          = THIS_MODULE,
 576         .open           = cifs_linux_ext_proc_open,
 577         .read           = seq_read,
 578         .llseek         = seq_lseek,
 579         .release        = single_release,
 580         .write          = cifs_linux_ext_proc_write,
 581 };
 582
 583 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 584 {
 585         seq_printf(m, "%d\n", lookupCacheEnabled);
 586         return 0;
 587 }
 588
 589 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 590 {
 591         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 592 }
 593
 594 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 595                 const char __user *buffer, size_t count, loff_t *ppos)
 596 {
 597         char c;
 598         int rc;
 599
 600         rc = get_user(c, buffer);
 601         if (rc)
 602                 return rc;
 603         if (c == '0' || c == 'n' || c == 'N')
 604                 lookupCacheEnabled = 0;
 605         else if (c == '1' || c == 'y' || c == 'Y')
 606                 lookupCacheEnabled = 1;
 607
 608         return count;
 609 }
 610
 611 static const struct file_operations cifs_lookup_cache_proc_fops = {
 612         .owner          = THIS_MODULE,
 613         .open           = cifs_lookup_cache_proc_open,
 614         .read           = seq_read,
 615         .llseek         = seq_lseek,
 616         .release        = single_release,
 617         .write          = cifs_lookup_cache_proc_write,
 618 };
 619
 620 static int traceSMB_proc_show(struct seq_file *m, void *v)
 621 {
 622         seq_printf(m, "%d\n", traceSMB);
 623         return 0;
 624 }
 625
 626 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 627 {
 628         return single_open(file, traceSMB_proc_show, NULL);
 629 }
 630
 631 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 632                 size_t count, loff_t *ppos)
 633 {
 634         char c;
 635         int rc;
 636
 637         rc = get_user(c, buffer);
 638         if (rc)
 639                 return rc;
 640         if (c == '0' || c == 'n' || c == 'N')
 641                 traceSMB = 0;
 642         else if (c == '1' || c == 'y' || c == 'Y')
 643                 traceSMB = 1;
 644
 645         return count;
 646 }
 647
 648 static const struct file_operations traceSMB_proc_fops = {
 649         .owner          = THIS_MODULE,
 650         .open           = traceSMB_proc_open,
 651         .read           = seq_read,
 652         .llseek         = seq_lseek,
 653         .release        = single_release,
 654         .write          = traceSMB_proc_write,
 655 };
 656
 657 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 658 {
 659         seq_printf(m, "%d\n", multiuser_mount);
 660         return 0;
 661 }
 662
 663 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 664 {
 665         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 666 }
 667
 668 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 669                 const char __user *buffer, size_t count, loff_t *ppos)
 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 const struct file_operations cifs_multiuser_mount_proc_fops = {
 686         .owner          = THIS_MODULE,
 687         .open           = cifs_multiuser_mount_proc_open,
 688         .read           = seq_read,
 689         .llseek         = seq_lseek,
 690         .release        = single_release,
 691         .write          = cifs_multiuser_mount_proc_write,
 692 };
 693
 694 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 695 {
 696         seq_printf(m, "0x%x\n", extended_security);
 697         return 0;
 698 }
 699
 700 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 701 {
 702         return single_open(file, cifs_security_flags_proc_show, NULL);
 703 }
 704
 705 static ssize_t cifs_security_flags_proc_write(struct file *file,
 706                 const char __user *buffer, size_t count, loff_t *ppos)
 707 {
 708         unsigned int flags;
 709         char flags_string[12];
 710         char c;
 711
 712         if ((count < 1) || (count > 11))
 713                 return -EINVAL;
 714
 715         memset(flags_string, 0, 12);
 716
 717         if (copy_from_user(flags_string, buffer, count))
 718                 return -EFAULT;
 719
 720         if (count < 3) {
 721                 /* single char or single char followed by null */
 722                 c = flags_string[0];
 723                 if (c == '0' || c == 'n' || c == 'N') {
 724                         extended_security = CIFSSEC_DEF; /* default */
 725                         return count;
 726                 } else if (c == '1' || c == 'y' || c == 'Y') {
 727                         extended_security = CIFSSEC_MAX;
 728                         return count;
 729                 } else if (!isdigit(c)) {
 730                         cERROR(1, ("invalid flag %c", c));
 731                         return -EINVAL;
 732                 }
 733         }
 734         /* else we have a number */
 735
 736         flags = simple_strtoul(flags_string, NULL, 0);
 737
 738         cFYI(1, ("sec flags 0x%x", flags));
 739
 740         if (flags <= 0)  {
 741                 cERROR(1, ("invalid security flags %s", flags_string));
 742                 return -EINVAL;
 743         }
 744
 745         if (flags & ~CIFSSEC_MASK) {
 746                 cERROR(1, ("attempt to set unsupported security flags 0x%x",
 747                         flags & ~CIFSSEC_MASK));
 748                 return -EINVAL;
 749         }
 750         /* flags look ok - update the global security flags for cifs module */
 751         extended_security = flags;
 752         if (extended_security & CIFSSEC_MUST_SIGN) {
 753                 /* requiring signing implies signing is allowed */
 754                 extended_security |= CIFSSEC_MAY_SIGN;
 755                 cFYI(1, ("packet signing now required"));
 756         } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
 757                 cFYI(1, ("packet signing disabled"));
 758         }
 759         /* BB should we turn on MAY flags for other MUST options? */
 760         return count;
 761 }
 762
 763 static const struct file_operations cifs_security_flags_proc_fops = {
 764         .owner          = THIS_MODULE,
 765         .open           = cifs_security_flags_proc_open,
 766         .read           = seq_read,
 767         .llseek         = seq_lseek,
 768         .release        = single_release,
 769         .write          = cifs_security_flags_proc_write,
 770 };
 771 #else
 772 inline void cifs_proc_init(void)
 773 {
 774 }
 775
 776 inline void cifs_proc_clean(void)
 777 {
 778 }
 779 #endif /* PROC_FS */