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                 cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %d",
  83                         mid_entry->midState,
  84                         (int)mid_entry->command,
  85                         mid_entry->pid,
  86                         mid_entry->callback_data,
  87                         mid_entry->mid);
  88 #ifdef CONFIG_CIFS_STATS2
  89                 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
  90                         mid_entry->largeBuf,
  91                         mid_entry->resp_buf,
  92                         mid_entry->when_received,
  93                         jiffies);
  94 #endif /* STATS2 */
  95                 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
  96                           mid_entry->multiEnd);
  97                 if (mid_entry->resp_buf) {
  98                         cifs_dump_detail(mid_entry->resp_buf);
  99                         cifs_dump_mem("existing buf: ",
 100                                 mid_entry->resp_buf, 62);
 101                 }
 102         }
 103         spin_unlock(&GlobalMid_Lock);
 104 }
 105 #endif /* CONFIG_CIFS_DEBUG2 */
 106
 107 #ifdef CONFIG_PROC_FS
 108 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 109 {
 110         struct list_head *tmp1, *tmp2, *tmp3;
 111         struct mid_q_entry *mid_entry;
 112         struct TCP_Server_Info *server;
 113         struct cifsSesInfo *ses;
 114         struct cifsTconInfo *tcon;
 115         int i, j;
 116         __u32 dev_type;
 117
 118         seq_puts(m,
 119                     "Display Internal CIFS Data Structures for Debugging\n"
 120                     "---------------------------------------------------\n");
 121         seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 122         seq_printf(m, "Features:");
 123 #ifdef CONFIG_CIFS_DFS_UPCALL
 124         seq_printf(m, " dfs");
 125 #endif
 126 #ifdef CONFIG_CIFS_FSCACHE
 127         seq_printf(m, " fscache");
 128 #endif
 129 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 130         seq_printf(m, " lanman");
 131 #endif
 132 #ifdef CONFIG_CIFS_POSIX
 133         seq_printf(m, " posix");
 134 #endif
 135 #ifdef CONFIG_CIFS_UPCALL
 136         seq_printf(m, " spnego");
 137 #endif
 138 #ifdef CONFIG_CIFS_XATTR
 139         seq_printf(m, " xattr");
 140 #endif
 141 #ifdef CONFIG_CIFS_ACL
 142         seq_printf(m, " acl");
 143 #endif
 144         seq_putc(m, '\n');
 145         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 146         seq_printf(m, "Servers:");
 147
 148         i = 0;
 149         spin_lock(&cifs_tcp_ses_lock);
 150         list_for_each(tmp1, &cifs_tcp_ses_list) {
 151                 server = list_entry(tmp1, struct TCP_Server_Info,
 152                                     tcp_ses_list);
 153                 i++;
 154                 list_for_each(tmp2, &server->smb_ses_list) {
 155                         ses = list_entry(tmp2, struct cifsSesInfo,
 156                                          smb_ses_list);
 157                         if ((ses->serverDomain == NULL) ||
 158                                 (ses->serverOS == NULL) ||
 159                                 (ses->serverNOS == NULL)) {
 160                                 seq_printf(m, "\n%d) entry for %s not fully "
 161                                            "displayed\n\t", i, ses->serverName);
 162                         } else {
 163                                 seq_printf(m,
 164                                     "\n%d) Name: %s  Domain: %s Uses: %d OS:"
 165                                     " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 166                                     " session status: %d\t",
 167                                 i, ses->serverName, ses->serverDomain,
 168                                 ses->ses_count, ses->serverOS, ses->serverNOS,
 169                                 ses->capabilities, ses->status);
 170                         }
 171                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 172                                    "Server: %d SecMode: 0x%x Req On Wire: %d",
 173                                    server->tcpStatus, server->srv_count,
 174                                    server->secMode,
 175                                    atomic_read(&server->inFlight));
 176
 177 #ifdef CONFIG_CIFS_STATS2
 178                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 179                                 atomic_read(&server->inSend),
 180                                 atomic_read(&server->num_waiters));
 181 #endif
 182
 183                         seq_puts(m, "\n\tShares:");
 184                         j = 0;
 185                         list_for_each(tmp3, &ses->tcon_list) {
 186                                 tcon = list_entry(tmp3, struct cifsTconInfo,
 187                                                   tcon_list);
 188                                 ++j;
 189                                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 190                                 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
 191                                            tcon->treeName, tcon->tc_count);
 192                                 if (tcon->nativeFileSystem) {
 193                                         seq_printf(m, "Type: %s ",
 194                                                    tcon->nativeFileSystem);
 195                                 }
 196                                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 197                                         "\nPathComponentMax: %d Status: 0x%d",
 198                                         le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 199                                         le32_to_cpu(tcon->fsAttrInfo.Attributes),
 200                                         le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 201                                         tcon->tidStatus);
 202                                 if (dev_type == FILE_DEVICE_DISK)
 203                                         seq_puts(m, " type: DISK ");
 204                                 else if (dev_type == FILE_DEVICE_CD_ROM)
 205                                         seq_puts(m, " type: CDROM ");
 206                                 else
 207                                         seq_printf(m, " type: %d ", dev_type);
 208
 209                                 if (tcon->need_reconnect)
 210                                         seq_puts(m, "\tDISCONNECTED ");
 211                                 seq_putc(m, '\n');
 212                         }
 213
 214                         seq_puts(m, "\n\tMIDs:\n");
 215
 216                         spin_lock(&GlobalMid_Lock);
 217                         list_for_each(tmp3, &server->pending_mid_q) {
 218                                 mid_entry = list_entry(tmp3, struct mid_q_entry,
 219                                         qhead);
 220                                 seq_printf(m, "\tState: %d com: %d pid:"
 221                                                 " %d cbdata: %p mid %d\n",
 222                                                 mid_entry->midState,
 223                                                 (int)mid_entry->command,
 224                                                 mid_entry->pid,
 225                                                 mid_entry->callback_data,
 226                                                 mid_entry->mid);
 227                         }
 228                         spin_unlock(&GlobalMid_Lock);
 229                 }
 230         }
 231         spin_unlock(&cifs_tcp_ses_lock);
 232         seq_putc(m, '\n');
 233
 234         /* BB add code to dump additional info such as TCP session info now */
 235         return 0;
 236 }
 237
 238 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 239 {
 240         return single_open(file, cifs_debug_data_proc_show, NULL);
 241 }
 242
 243 static const struct file_operations cifs_debug_data_proc_fops = {
 244         .owner          = THIS_MODULE,
 245         .open           = cifs_debug_data_proc_open,
 246         .read           = seq_read,
 247         .llseek         = seq_lseek,
 248         .release        = single_release,
 249 };
 250
 251 #ifdef CONFIG_CIFS_STATS
 252 static ssize_t cifs_stats_proc_write(struct file *file,
 253                 const char __user *buffer, size_t count, loff_t *ppos)
 254 {
 255         char c;
 256         int rc;
 257         struct list_head *tmp1, *tmp2, *tmp3;
 258         struct TCP_Server_Info *server;
 259         struct cifsSesInfo *ses;
 260         struct cifsTconInfo *tcon;
 261
 262         rc = get_user(c, buffer);
 263         if (rc)
 264                 return rc;
 265
 266         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 267 #ifdef CONFIG_CIFS_STATS2
 268                 atomic_set(&totBufAllocCount, 0);
 269                 atomic_set(&totSmBufAllocCount, 0);
 270 #endif /* CONFIG_CIFS_STATS2 */
 271                 spin_lock(&cifs_tcp_ses_lock);
 272                 list_for_each(tmp1, &cifs_tcp_ses_list) {
 273                         server = list_entry(tmp1, struct TCP_Server_Info,
 274                                             tcp_ses_list);
 275                         list_for_each(tmp2, &server->smb_ses_list) {
 276                                 ses = list_entry(tmp2, struct cifsSesInfo,
 277                                                  smb_ses_list);
 278                                 list_for_each(tmp3, &ses->tcon_list) {
 279                                         tcon = list_entry(tmp3,
 280                                                           struct cifsTconInfo,
 281                                                           tcon_list);
 282                                         atomic_set(&tcon->num_smbs_sent, 0);
 283                                         atomic_set(&tcon->num_writes, 0);
 284                                         atomic_set(&tcon->num_reads, 0);
 285                                         atomic_set(&tcon->num_oplock_brks, 0);
 286                                         atomic_set(&tcon->num_opens, 0);
 287                                         atomic_set(&tcon->num_posixopens, 0);
 288                                         atomic_set(&tcon->num_posixmkdirs, 0);
 289                                         atomic_set(&tcon->num_closes, 0);
 290                                         atomic_set(&tcon->num_deletes, 0);
 291                                         atomic_set(&tcon->num_mkdirs, 0);
 292                                         atomic_set(&tcon->num_rmdirs, 0);
 293                                         atomic_set(&tcon->num_renames, 0);
 294                                         atomic_set(&tcon->num_t2renames, 0);
 295                                         atomic_set(&tcon->num_ffirst, 0);
 296                                         atomic_set(&tcon->num_fnext, 0);
 297                                         atomic_set(&tcon->num_fclose, 0);
 298                                         atomic_set(&tcon->num_hardlinks, 0);
 299                                         atomic_set(&tcon->num_symlinks, 0);
 300                                         atomic_set(&tcon->num_locks, 0);
 301                                 }
 302                         }
 303                 }
 304                 spin_unlock(&cifs_tcp_ses_lock);
 305         }
 306
 307         return count;
 308 }
 309
 310 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 311 {
 312         int i;
 313         struct list_head *tmp1, *tmp2, *tmp3;
 314         struct TCP_Server_Info *server;
 315         struct cifsSesInfo *ses;
 316         struct cifsTconInfo *tcon;
 317
 318         seq_printf(m,
 319                         "Resources in use\nCIFS Session: %d\n",
 320                         sesInfoAllocCount.counter);
 321         seq_printf(m, "Share (unique mount targets): %d\n",
 322                         tconInfoAllocCount.counter);
 323         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 324                         bufAllocCount.counter,
 325                         cifs_min_rcv + tcpSesAllocCount.counter);
 326         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 327                         smBufAllocCount.counter, cifs_min_small);
 328 #ifdef CONFIG_CIFS_STATS2
 329         seq_printf(m, "Total Large %d Small %d Allocations\n",
 330                                 atomic_read(&totBufAllocCount),
 331                                 atomic_read(&totSmBufAllocCount));
 332 #endif /* CONFIG_CIFS_STATS2 */
 333
 334         seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
 335         seq_printf(m,
 336                 "\n%d session %d share reconnects\n",
 337                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 338
 339         seq_printf(m,
 340                 "Total vfs operations: %d maximum at one time: %d\n",
 341                 GlobalCurrentXid, GlobalMaxActiveXid);
 342
 343         i = 0;
 344         spin_lock(&cifs_tcp_ses_lock);
 345         list_for_each(tmp1, &cifs_tcp_ses_list) {
 346                 server = list_entry(tmp1, struct TCP_Server_Info,
 347                                     tcp_ses_list);
 348                 list_for_each(tmp2, &server->smb_ses_list) {
 349                         ses = list_entry(tmp2, struct cifsSesInfo,
 350                                          smb_ses_list);
 351                         list_for_each(tmp3, &ses->tcon_list) {
 352                                 tcon = list_entry(tmp3,
 353                                                   struct cifsTconInfo,
 354                                                   tcon_list);
 355                                 i++;
 356                                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 357                                 if (tcon->need_reconnect)
 358                                         seq_puts(m, "\tDISCONNECTED ");
 359                                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 360                                         atomic_read(&tcon->num_smbs_sent),
 361                                         atomic_read(&tcon->num_oplock_brks));
 362                                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 363                                         atomic_read(&tcon->num_reads),
 364                                         (long long)(tcon->bytes_read));
 365                                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 366                                         atomic_read(&tcon->num_writes),
 367                                         (long long)(tcon->bytes_written));
 368                                 seq_printf(m, "\nFlushes: %d",
 369                                         atomic_read(&tcon->num_flushes));
 370                                 seq_printf(m, "\nLocks: %d HardLinks: %d "
 371                                               "Symlinks: %d",
 372                                         atomic_read(&tcon->num_locks),
 373                                         atomic_read(&tcon->num_hardlinks),
 374                                         atomic_read(&tcon->num_symlinks));
 375                                 seq_printf(m, "\nOpens: %d Closes: %d "
 376                                               "Deletes: %d",
 377                                         atomic_read(&tcon->num_opens),
 378                                         atomic_read(&tcon->num_closes),
 379                                         atomic_read(&tcon->num_deletes));
 380                                 seq_printf(m, "\nPosix Opens: %d "
 381                                               "Posix Mkdirs: %d",
 382                                         atomic_read(&tcon->num_posixopens),
 383                                         atomic_read(&tcon->num_posixmkdirs));
 384                                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 385                                         atomic_read(&tcon->num_mkdirs),
 386                                         atomic_read(&tcon->num_rmdirs));
 387                                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 388                                         atomic_read(&tcon->num_renames),
 389                                         atomic_read(&tcon->num_t2renames));
 390                                 seq_printf(m, "\nFindFirst: %d FNext %d "
 391                                               "FClose %d",
 392                                         atomic_read(&tcon->num_ffirst),
 393                                         atomic_read(&tcon->num_fnext),
 394                                         atomic_read(&tcon->num_fclose));
 395                         }
 396                 }
 397         }
 398         spin_unlock(&cifs_tcp_ses_lock);
 399
 400         seq_putc(m, '\n');
 401         return 0;
 402 }
 403
 404 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 405 {
 406         return single_open(file, cifs_stats_proc_show, NULL);
 407 }
 408
 409 static const struct file_operations cifs_stats_proc_fops = {
 410         .owner          = THIS_MODULE,
 411         .open           = cifs_stats_proc_open,
 412         .read           = seq_read,
 413         .llseek         = seq_lseek,
 414         .release        = single_release,
 415         .write          = cifs_stats_proc_write,
 416 };
 417 #endif /* STATS */
 418
 419 static struct proc_dir_entry *proc_fs_cifs;
 420 static const struct file_operations cifsFYI_proc_fops;
 421 static const struct file_operations cifs_oplock_proc_fops;
 422 static const struct file_operations cifs_lookup_cache_proc_fops;
 423 static const struct file_operations traceSMB_proc_fops;
 424 static const struct file_operations cifs_multiuser_mount_proc_fops;
 425 static const struct file_operations cifs_security_flags_proc_fops;
 426 static const struct file_operations cifs_linux_ext_proc_fops;
 427
 428 void
 429 cifs_proc_init(void)
 430 {
 431         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 432         if (proc_fs_cifs == NULL)
 433                 return;
 434
 435         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 436
 437 #ifdef CONFIG_CIFS_STATS
 438         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 439 #endif /* STATS */
 440         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 441         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 442         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 443         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 444                     &cifs_linux_ext_proc_fops);
 445         proc_create("MultiuserMount", 0, proc_fs_cifs,
 446                     &cifs_multiuser_mount_proc_fops);
 447         proc_create("SecurityFlags", 0, proc_fs_cifs,
 448                     &cifs_security_flags_proc_fops);
 449         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 450                     &cifs_lookup_cache_proc_fops);
 451 }
 452
 453 void
 454 cifs_proc_clean(void)
 455 {
 456         if (proc_fs_cifs == NULL)
 457                 return;
 458
 459         remove_proc_entry("DebugData", proc_fs_cifs);
 460         remove_proc_entry("cifsFYI", proc_fs_cifs);
 461         remove_proc_entry("traceSMB", proc_fs_cifs);
 462 #ifdef CONFIG_CIFS_STATS
 463         remove_proc_entry("Stats", proc_fs_cifs);
 464 #endif
 465         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 466         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 467         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 468         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 469         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 470         remove_proc_entry("fs/cifs", NULL);
 471 }
 472
 473 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 474 {
 475         seq_printf(m, "%d\n", cifsFYI);
 476         return 0;
 477 }
 478
 479 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 480 {
 481         return single_open(file, cifsFYI_proc_show, NULL);
 482 }
 483
 484 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 485                 size_t count, loff_t *ppos)
 486 {
 487         char c;
 488         int rc;
 489
 490         rc = get_user(c, buffer);
 491         if (rc)
 492                 return rc;
 493         if (c == '0' || c == 'n' || c == 'N')
 494                 cifsFYI = 0;
 495         else if (c == '1' || c == 'y' || c == 'Y')
 496                 cifsFYI = 1;
 497         else if ((c > '1') && (c <= '9'))
 498                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 499
 500         return count;
 501 }
 502
 503 static const struct file_operations cifsFYI_proc_fops = {
 504         .owner          = THIS_MODULE,
 505         .open           = cifsFYI_proc_open,
 506         .read           = seq_read,
 507         .llseek         = seq_lseek,
 508         .release        = single_release,
 509         .write          = cifsFYI_proc_write,
 510 };
 511
 512 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 513 {
 514         seq_printf(m, "%d\n", oplockEnabled);
 515         return 0;
 516 }
 517
 518 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 519 {
 520         return single_open(file, cifs_oplock_proc_show, NULL);
 521 }
 522
 523 static ssize_t cifs_oplock_proc_write(struct file *file,
 524                 const char __user *buffer, size_t count, loff_t *ppos)
 525 {
 526         char c;
 527         int rc;
 528
 529         rc = get_user(c, buffer);
 530         if (rc)
 531                 return rc;
 532         if (c == '0' || c == 'n' || c == 'N')
 533                 oplockEnabled = 0;
 534         else if (c == '1' || c == 'y' || c == 'Y')
 535                 oplockEnabled = 1;
 536
 537         return count;
 538 }
 539
 540 static const struct file_operations cifs_oplock_proc_fops = {
 541         .owner          = THIS_MODULE,
 542         .open           = cifs_oplock_proc_open,
 543         .read           = seq_read,
 544         .llseek         = seq_lseek,
 545         .release        = single_release,
 546         .write          = cifs_oplock_proc_write,
 547 };
 548
 549 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 550 {
 551         seq_printf(m, "%d\n", linuxExtEnabled);
 552         return 0;
 553 }
 554
 555 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 556 {
 557         return single_open(file, cifs_linux_ext_proc_show, NULL);
 558 }
 559
 560 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 561                 const char __user *buffer, size_t count, loff_t *ppos)
 562 {
 563         char c;
 564         int rc;
 565
 566         rc = get_user(c, buffer);
 567         if (rc)
 568                 return rc;
 569         if (c == '0' || c == 'n' || c == 'N')
 570                 linuxExtEnabled = 0;
 571         else if (c == '1' || c == 'y' || c == 'Y')
 572                 linuxExtEnabled = 1;
 573
 574         return count;
 575 }
 576
 577 static const struct file_operations cifs_linux_ext_proc_fops = {
 578         .owner          = THIS_MODULE,
 579         .open           = cifs_linux_ext_proc_open,
 580         .read           = seq_read,
 581         .llseek         = seq_lseek,
 582         .release        = single_release,
 583         .write          = cifs_linux_ext_proc_write,
 584 };
 585
 586 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 587 {
 588         seq_printf(m, "%d\n", lookupCacheEnabled);
 589         return 0;
 590 }
 591
 592 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 593 {
 594         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 595 }
 596
 597 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 598                 const char __user *buffer, size_t count, loff_t *ppos)
 599 {
 600         char c;
 601         int rc;
 602
 603         rc = get_user(c, buffer);
 604         if (rc)
 605                 return rc;
 606         if (c == '0' || c == 'n' || c == 'N')
 607                 lookupCacheEnabled = 0;
 608         else if (c == '1' || c == 'y' || c == 'Y')
 609                 lookupCacheEnabled = 1;
 610
 611         return count;
 612 }
 613
 614 static const struct file_operations cifs_lookup_cache_proc_fops = {
 615         .owner          = THIS_MODULE,
 616         .open           = cifs_lookup_cache_proc_open,
 617         .read           = seq_read,
 618         .llseek         = seq_lseek,
 619         .release        = single_release,
 620         .write          = cifs_lookup_cache_proc_write,
 621 };
 622
 623 static int traceSMB_proc_show(struct seq_file *m, void *v)
 624 {
 625         seq_printf(m, "%d\n", traceSMB);
 626         return 0;
 627 }
 628
 629 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 630 {
 631         return single_open(file, traceSMB_proc_show, NULL);
 632 }
 633
 634 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 635                 size_t count, loff_t *ppos)
 636 {
 637         char c;
 638         int rc;
 639
 640         rc = get_user(c, buffer);
 641         if (rc)
 642                 return rc;
 643         if (c == '0' || c == 'n' || c == 'N')
 644                 traceSMB = 0;
 645         else if (c == '1' || c == 'y' || c == 'Y')
 646                 traceSMB = 1;
 647
 648         return count;
 649 }
 650
 651 static const struct file_operations traceSMB_proc_fops = {
 652         .owner          = THIS_MODULE,
 653         .open           = traceSMB_proc_open,
 654         .read           = seq_read,
 655         .llseek         = seq_lseek,
 656         .release        = single_release,
 657         .write          = traceSMB_proc_write,
 658 };
 659
 660 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 661 {
 662         seq_printf(m, "%d\n", multiuser_mount);
 663         return 0;
 664 }
 665
 666 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 667 {
 668         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 669 }
 670
 671 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 672                 const char __user *buffer, size_t count, loff_t *ppos)
 673 {
 674         char c;
 675         int rc;
 676
 677         rc = get_user(c, buffer);
 678         if (rc)
 679                 return rc;
 680         if (c == '0' || c == 'n' || c == 'N')
 681                 multiuser_mount = 0;
 682         else if (c == '1' || c == 'y' || c == 'Y')
 683                 multiuser_mount = 1;
 684
 685         return count;
 686 }
 687
 688 static const struct file_operations cifs_multiuser_mount_proc_fops = {
 689         .owner          = THIS_MODULE,
 690         .open           = cifs_multiuser_mount_proc_open,
 691         .read           = seq_read,
 692         .llseek         = seq_lseek,
 693         .release        = single_release,
 694         .write          = cifs_multiuser_mount_proc_write,
 695 };
 696
 697 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 698 {
 699         seq_printf(m, "0x%x\n", global_secflags);
 700         return 0;
 701 }
 702
 703 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 704 {
 705         return single_open(file, cifs_security_flags_proc_show, NULL);
 706 }
 707
 708 static ssize_t cifs_security_flags_proc_write(struct file *file,
 709                 const char __user *buffer, size_t count, loff_t *ppos)
 710 {
 711         unsigned int flags;
 712         char flags_string[12];
 713         char c;
 714
 715         if ((count < 1) || (count > 11))
 716                 return -EINVAL;
 717
 718         memset(flags_string, 0, 12);
 719
 720         if (copy_from_user(flags_string, buffer, count))
 721                 return -EFAULT;
 722
 723         if (count < 3) {
 724                 /* single char or single char followed by null */
 725                 c = flags_string[0];
 726                 if (c == '0' || c == 'n' || c == 'N') {
 727                         global_secflags = CIFSSEC_DEF; /* default */
 728                         return count;
 729                 } else if (c == '1' || c == 'y' || c == 'Y') {
 730                         global_secflags = CIFSSEC_MAX;
 731                         return count;
 732                 } else if (!isdigit(c)) {
 733                         cERROR(1, "invalid flag %c", c);
 734                         return -EINVAL;
 735                 }
 736         }
 737         /* else we have a number */
 738
 739         flags = simple_strtoul(flags_string, NULL, 0);
 740
 741         cFYI(1, "sec flags 0x%x", flags);
 742
 743         if (flags <= 0)  {
 744                 cERROR(1, "invalid security flags %s", flags_string);
 745                 return -EINVAL;
 746         }
 747
 748         if (flags & ~CIFSSEC_MASK) {
 749                 cERROR(1, "attempt to set unsupported security flags 0x%x",
 750                         flags & ~CIFSSEC_MASK);
 751                 return -EINVAL;
 752         }
 753         /* flags look ok - update the global security flags for cifs module */
 754         global_secflags = flags;
 755         if (global_secflags & CIFSSEC_MUST_SIGN) {
 756                 /* requiring signing implies signing is allowed */
 757                 global_secflags |= CIFSSEC_MAY_SIGN;
 758                 cFYI(1, "packet signing now required");
 759         } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
 760                 cFYI(1, "packet signing disabled");
 761         }
 762         /* BB should we turn on MAY flags for other MUST options? */
 763         return count;
 764 }
 765
 766 static const struct file_operations cifs_security_flags_proc_fops = {
 767         .owner          = THIS_MODULE,
 768         .open           = cifs_security_flags_proc_open,
 769         .read           = seq_read,
 770         .llseek         = seq_lseek,
 771         .release        = single_release,
 772         .write          = cifs_security_flags_proc_write,
 773 };
 774 #else
 775 inline void cifs_proc_init(void)
 776 {
 777 }
 778
 779 inline void cifs_proc_clean(void)
 780 {
 781 }
 782 #endif /* PROC_FS */