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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                 cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
  83                         mid_entry->midState,
  84                         (int)mid_entry->command,
  85                         mid_entry->pid,
  86                         mid_entry->tsk,
  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, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 123         seq_printf(m, "Servers:");
 124
 125         i = 0;
 126         read_lock(&cifs_tcp_ses_lock);
 127         list_for_each(tmp1, &cifs_tcp_ses_list) {
 128                 server = list_entry(tmp1, struct TCP_Server_Info,
 129                                     tcp_ses_list);
 130                 i++;
 131                 list_for_each(tmp2, &server->smb_ses_list) {
 132                         ses = list_entry(tmp2, struct cifsSesInfo,
 133                                          smb_ses_list);
 134                         if ((ses->serverDomain == NULL) ||
 135                                 (ses->serverOS == NULL) ||
 136                                 (ses->serverNOS == NULL)) {
 137                                 seq_printf(m, "\n%d) entry for %s not fully "
 138                                            "displayed\n\t", i, ses->serverName);
 139                         } else {
 140                                 seq_printf(m,
 141                                     "\n%d) Name: %s  Domain: %s Uses: %d OS:"
 142                                     " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 143                                     " session status: %d\t",
 144                                 i, ses->serverName, ses->serverDomain,
 145                                 ses->ses_count, ses->serverOS, ses->serverNOS,
 146                                 ses->capabilities, ses->status);
 147                         }
 148                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 149                                    "Server: %d SecMode: 0x%x Req On Wire: %d",
 150                                    server->tcpStatus, server->srv_count,
 151                                    server->secMode,
 152                                    atomic_read(&server->inFlight));
 153
 154 #ifdef CONFIG_CIFS_STATS2
 155                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 156                                 atomic_read(&server->inSend),
 157                                 atomic_read(&server->num_waiters));
 158 #endif
 159
 160                         seq_puts(m, "\n\tShares:");
 161                         j = 0;
 162                         list_for_each(tmp3, &ses->tcon_list) {
 163                                 tcon = list_entry(tmp3, struct cifsTconInfo,
 164                                                   tcon_list);
 165                                 ++j;
 166                                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 167                                 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
 168                                            tcon->treeName, tcon->tc_count);
 169                                 if (tcon->nativeFileSystem) {
 170                                         seq_printf(m, "Type: %s ",
 171                                                    tcon->nativeFileSystem);
 172                                 }
 173                                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 174                                         "\nPathComponentMax: %d Status: 0x%d",
 175                                         le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 176                                         le32_to_cpu(tcon->fsAttrInfo.Attributes),
 177                                         le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 178                                         tcon->tidStatus);
 179                                 if (dev_type == FILE_DEVICE_DISK)
 180                                         seq_puts(m, " type: DISK ");
 181                                 else if (dev_type == FILE_DEVICE_CD_ROM)
 182                                         seq_puts(m, " type: CDROM ");
 183                                 else
 184                                         seq_printf(m, " type: %d ", dev_type);
 185
 186                                 if (tcon->need_reconnect)
 187                                         seq_puts(m, "\tDISCONNECTED ");
 188                                 seq_putc(m, '\n');
 189                         }
 190
 191                         seq_puts(m, "\n\tMIDs:\n");
 192
 193                         spin_lock(&GlobalMid_Lock);
 194                         list_for_each(tmp3, &server->pending_mid_q) {
 195                                 mid_entry = list_entry(tmp3, struct mid_q_entry,
 196                                         qhead);
 197                                 seq_printf(m, "\tState: %d com: %d pid:"
 198                                                 " %d tsk: %p mid %d\n",
 199                                                 mid_entry->midState,
 200                                                 (int)mid_entry->command,
 201                                                 mid_entry->pid,
 202                                                 mid_entry->tsk,
 203                                                 mid_entry->mid);
 204                         }
 205                         spin_unlock(&GlobalMid_Lock);
 206                 }
 207         }
 208         read_unlock(&cifs_tcp_ses_lock);
 209         seq_putc(m, '\n');
 210
 211         /* BB add code to dump additional info such as TCP session info now */
 212         return 0;
 213 }
 214
 215 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 216 {
 217         return single_open(file, cifs_debug_data_proc_show, NULL);
 218 }
 219
 220 static const struct file_operations cifs_debug_data_proc_fops = {
 221         .owner          = THIS_MODULE,
 222         .open           = cifs_debug_data_proc_open,
 223         .read           = seq_read,
 224         .llseek         = seq_lseek,
 225         .release        = single_release,
 226 };
 227
 228 #ifdef CONFIG_CIFS_STATS
 229 static ssize_t cifs_stats_proc_write(struct file *file,
 230                 const char __user *buffer, size_t count, loff_t *ppos)
 231 {
 232         char c;
 233         int rc;
 234         struct list_head *tmp1, *tmp2, *tmp3;
 235         struct TCP_Server_Info *server;
 236         struct cifsSesInfo *ses;
 237         struct cifsTconInfo *tcon;
 238
 239         rc = get_user(c, buffer);
 240         if (rc)
 241                 return rc;
 242
 243         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 244 #ifdef CONFIG_CIFS_STATS2
 245                 atomic_set(&totBufAllocCount, 0);
 246                 atomic_set(&totSmBufAllocCount, 0);
 247 #endif /* CONFIG_CIFS_STATS2 */
 248                 read_lock(&cifs_tcp_ses_lock);
 249                 list_for_each(tmp1, &cifs_tcp_ses_list) {
 250                         server = list_entry(tmp1, struct TCP_Server_Info,
 251                                             tcp_ses_list);
 252                         list_for_each(tmp2, &server->smb_ses_list) {
 253                                 ses = list_entry(tmp2, struct cifsSesInfo,
 254                                                  smb_ses_list);
 255                                 list_for_each(tmp3, &ses->tcon_list) {
 256                                         tcon = list_entry(tmp3,
 257                                                           struct cifsTconInfo,
 258                                                           tcon_list);
 259                                         atomic_set(&tcon->num_smbs_sent, 0);
 260                                         atomic_set(&tcon->num_writes, 0);
 261                                         atomic_set(&tcon->num_reads, 0);
 262                                         atomic_set(&tcon->num_oplock_brks, 0);
 263                                         atomic_set(&tcon->num_opens, 0);
 264                                         atomic_set(&tcon->num_closes, 0);
 265                                         atomic_set(&tcon->num_deletes, 0);
 266                                         atomic_set(&tcon->num_mkdirs, 0);
 267                                         atomic_set(&tcon->num_rmdirs, 0);
 268                                         atomic_set(&tcon->num_renames, 0);
 269                                         atomic_set(&tcon->num_t2renames, 0);
 270                                         atomic_set(&tcon->num_ffirst, 0);
 271                                         atomic_set(&tcon->num_fnext, 0);
 272                                         atomic_set(&tcon->num_fclose, 0);
 273                                         atomic_set(&tcon->num_hardlinks, 0);
 274                                         atomic_set(&tcon->num_symlinks, 0);
 275                                         atomic_set(&tcon->num_locks, 0);
 276                                 }
 277                         }
 278                 }
 279                 read_unlock(&cifs_tcp_ses_lock);
 280         }
 281
 282         return count;
 283 }
 284
 285 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 286 {
 287         int i;
 288         struct list_head *tmp1, *tmp2, *tmp3;
 289         struct TCP_Server_Info *server;
 290         struct cifsSesInfo *ses;
 291         struct cifsTconInfo *tcon;
 292
 293         seq_printf(m,
 294                         "Resources in use\nCIFS Session: %d\n",
 295                         sesInfoAllocCount.counter);
 296         seq_printf(m, "Share (unique mount targets): %d\n",
 297                         tconInfoAllocCount.counter);
 298         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 299                         bufAllocCount.counter,
 300                         cifs_min_rcv + tcpSesAllocCount.counter);
 301         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 302                         smBufAllocCount.counter, cifs_min_small);
 303 #ifdef CONFIG_CIFS_STATS2
 304         seq_printf(m, "Total Large %d Small %d Allocations\n",
 305                                 atomic_read(&totBufAllocCount),
 306                                 atomic_read(&totSmBufAllocCount));
 307 #endif /* CONFIG_CIFS_STATS2 */
 308
 309         seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
 310         seq_printf(m,
 311                 "\n%d session %d share reconnects\n",
 312                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 313
 314         seq_printf(m,
 315                 "Total vfs operations: %d maximum at one time: %d\n",
 316                 GlobalCurrentXid, GlobalMaxActiveXid);
 317
 318         i = 0;
 319         read_lock(&cifs_tcp_ses_lock);
 320         list_for_each(tmp1, &cifs_tcp_ses_list) {
 321                 server = list_entry(tmp1, struct TCP_Server_Info,
 322                                     tcp_ses_list);
 323                 list_for_each(tmp2, &server->smb_ses_list) {
 324                         ses = list_entry(tmp2, struct cifsSesInfo,
 325                                          smb_ses_list);
 326                         list_for_each(tmp3, &ses->tcon_list) {
 327                                 tcon = list_entry(tmp3,
 328                                                   struct cifsTconInfo,
 329                                                   tcon_list);
 330                                 i++;
 331                                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 332                                 if (tcon->need_reconnect)
 333                                         seq_puts(m, "\tDISCONNECTED ");
 334                                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 335                                         atomic_read(&tcon->num_smbs_sent),
 336                                         atomic_read(&tcon->num_oplock_brks));
 337                                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 338                                         atomic_read(&tcon->num_reads),
 339                                         (long long)(tcon->bytes_read));
 340                                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 341                                         atomic_read(&tcon->num_writes),
 342                                         (long long)(tcon->bytes_written));
 343                                 seq_printf(m, "\nLocks: %d HardLinks: %d "
 344                                               "Symlinks: %d",
 345                                         atomic_read(&tcon->num_locks),
 346                                         atomic_read(&tcon->num_hardlinks),
 347                                         atomic_read(&tcon->num_symlinks));
 348                                 seq_printf(m, "\nOpens: %d Closes: %d"
 349                                               "Deletes: %d",
 350                                         atomic_read(&tcon->num_opens),
 351                                         atomic_read(&tcon->num_closes),
 352                                         atomic_read(&tcon->num_deletes));
 353                                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 354                                         atomic_read(&tcon->num_mkdirs),
 355                                         atomic_read(&tcon->num_rmdirs));
 356                                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 357                                         atomic_read(&tcon->num_renames),
 358                                         atomic_read(&tcon->num_t2renames));
 359                                 seq_printf(m, "\nFindFirst: %d FNext %d "
 360                                               "FClose %d",
 361                                         atomic_read(&tcon->num_ffirst),
 362                                         atomic_read(&tcon->num_fnext),
 363                                         atomic_read(&tcon->num_fclose));
 364                         }
 365                 }
 366         }
 367         read_unlock(&cifs_tcp_ses_lock);
 368
 369         seq_putc(m, '\n');
 370         return 0;
 371 }
 372
 373 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 374 {
 375         return single_open(file, cifs_stats_proc_show, NULL);
 376 }
 377
 378 static const struct file_operations cifs_stats_proc_fops = {
 379         .owner          = THIS_MODULE,
 380         .open           = cifs_stats_proc_open,
 381         .read           = seq_read,
 382         .llseek         = seq_lseek,
 383         .release        = single_release,
 384         .write          = cifs_stats_proc_write,
 385 };
 386 #endif /* STATS */
 387
 388 static struct proc_dir_entry *proc_fs_cifs;
 389 static const struct file_operations cifsFYI_proc_fops;
 390 static const struct file_operations cifs_oplock_proc_fops;
 391 static const struct file_operations cifs_lookup_cache_proc_fops;
 392 static const struct file_operations traceSMB_proc_fops;
 393 static const struct file_operations cifs_multiuser_mount_proc_fops;
 394 static const struct file_operations cifs_security_flags_proc_fops;
 395 static const struct file_operations cifs_experimental_proc_fops;
 396 static const struct file_operations cifs_linux_ext_proc_fops;
 397
 398 void
 399 cifs_proc_init(void)
 400 {
 401         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 402         if (proc_fs_cifs == NULL)
 403                 return;
 404
 405         proc_fs_cifs->owner = THIS_MODULE;
 406         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 407
 408 #ifdef CONFIG_CIFS_STATS
 409         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 410 #endif /* STATS */
 411         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 412         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 413         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 414         proc_create("Experimental", 0, proc_fs_cifs,
 415                     &cifs_experimental_proc_fops);
 416         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 417                     &cifs_linux_ext_proc_fops);
 418         proc_create("MultiuserMount", 0, proc_fs_cifs,
 419                     &cifs_multiuser_mount_proc_fops);
 420         proc_create("SecurityFlags", 0, proc_fs_cifs,
 421                     &cifs_security_flags_proc_fops);
 422         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 423                     &cifs_lookup_cache_proc_fops);
 424 }
 425
 426 void
 427 cifs_proc_clean(void)
 428 {
 429         if (proc_fs_cifs == NULL)
 430                 return;
 431
 432         remove_proc_entry("DebugData", proc_fs_cifs);
 433         remove_proc_entry("cifsFYI", proc_fs_cifs);
 434         remove_proc_entry("traceSMB", proc_fs_cifs);
 435 #ifdef CONFIG_CIFS_STATS
 436         remove_proc_entry("Stats", proc_fs_cifs);
 437 #endif
 438         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 439         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 440         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 441         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 442         remove_proc_entry("Experimental", proc_fs_cifs);
 443         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 444         remove_proc_entry("fs/cifs", NULL);
 445 }
 446
 447 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 448 {
 449         seq_printf(m, "%d\n", cifsFYI);
 450         return 0;
 451 }
 452
 453 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 454 {
 455         return single_open(file, cifsFYI_proc_show, NULL);
 456 }
 457
 458 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 459                 size_t count, loff_t *ppos)
 460 {
 461         char c;
 462         int rc;
 463
 464         rc = get_user(c, buffer);
 465         if (rc)
 466                 return rc;
 467         if (c == '0' || c == 'n' || c == 'N')
 468                 cifsFYI = 0;
 469         else if (c == '1' || c == 'y' || c == 'Y')
 470                 cifsFYI = 1;
 471         else if ((c > '1') && (c <= '9'))
 472                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 473
 474         return count;
 475 }
 476
 477 static const struct file_operations cifsFYI_proc_fops = {
 478         .owner          = THIS_MODULE,
 479         .open           = cifsFYI_proc_open,
 480         .read           = seq_read,
 481         .llseek         = seq_lseek,
 482         .release        = single_release,
 483         .write          = cifsFYI_proc_write,
 484 };
 485
 486 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 487 {
 488         seq_printf(m, "%d\n", oplockEnabled);
 489         return 0;
 490 }
 491
 492 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 493 {
 494         return single_open(file, cifs_oplock_proc_show, NULL);
 495 }
 496
 497 static ssize_t cifs_oplock_proc_write(struct file *file,
 498                 const char __user *buffer, size_t count, loff_t *ppos)
 499 {
 500         char c;
 501         int rc;
 502
 503         rc = get_user(c, buffer);
 504         if (rc)
 505                 return rc;
 506         if (c == '0' || c == 'n' || c == 'N')
 507                 oplockEnabled = 0;
 508         else if (c == '1' || c == 'y' || c == 'Y')
 509                 oplockEnabled = 1;
 510
 511         return count;
 512 }
 513
 514 static const struct file_operations cifs_oplock_proc_fops = {
 515         .owner          = THIS_MODULE,
 516         .open           = cifs_oplock_proc_open,
 517         .read           = seq_read,
 518         .llseek         = seq_lseek,
 519         .release        = single_release,
 520         .write          = cifs_oplock_proc_write,
 521 };
 522
 523 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
 524 {
 525         seq_printf(m, "%d\n", experimEnabled);
 526         return 0;
 527 }
 528
 529 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
 530 {
 531         return single_open(file, cifs_experimental_proc_show, NULL);
 532 }
 533
 534 static ssize_t cifs_experimental_proc_write(struct file *file,
 535                 const char __user *buffer, size_t count, loff_t *ppos)
 536 {
 537         char c;
 538         int rc;
 539
 540         rc = get_user(c, buffer);
 541         if (rc)
 542                 return rc;
 543         if (c == '0' || c == 'n' || c == 'N')
 544                 experimEnabled = 0;
 545         else if (c == '1' || c == 'y' || c == 'Y')
 546                 experimEnabled = 1;
 547         else if (c == '2')
 548                 experimEnabled = 2;
 549
 550         return count;
 551 }
 552
 553 static const struct file_operations cifs_experimental_proc_fops = {
 554         .owner          = THIS_MODULE,
 555         .open           = cifs_experimental_proc_open,
 556         .read           = seq_read,
 557         .llseek         = seq_lseek,
 558         .release        = single_release,
 559         .write          = cifs_experimental_proc_write,
 560 };
 561
 562 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 563 {
 564         seq_printf(m, "%d\n", linuxExtEnabled);
 565         return 0;
 566 }
 567
 568 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 569 {
 570         return single_open(file, cifs_linux_ext_proc_show, NULL);
 571 }
 572
 573 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 574                 const char __user *buffer, size_t count, loff_t *ppos)
 575 {
 576         char c;
 577         int rc;
 578
 579         rc = get_user(c, buffer);
 580         if (rc)
 581                 return rc;
 582         if (c == '0' || c == 'n' || c == 'N')
 583                 linuxExtEnabled = 0;
 584         else if (c == '1' || c == 'y' || c == 'Y')
 585                 linuxExtEnabled = 1;
 586
 587         return count;
 588 }
 589
 590 static const struct file_operations cifs_linux_ext_proc_fops = {
 591         .owner          = THIS_MODULE,
 592         .open           = cifs_linux_ext_proc_open,
 593         .read           = seq_read,
 594         .llseek         = seq_lseek,
 595         .release        = single_release,
 596         .write          = cifs_linux_ext_proc_write,
 597 };
 598
 599 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 600 {
 601         seq_printf(m, "%d\n", lookupCacheEnabled);
 602         return 0;
 603 }
 604
 605 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 606 {
 607         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 608 }
 609
 610 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 611                 const char __user *buffer, size_t count, loff_t *ppos)
 612 {
 613         char c;
 614         int rc;
 615
 616         rc = get_user(c, buffer);
 617         if (rc)
 618                 return rc;
 619         if (c == '0' || c == 'n' || c == 'N')
 620                 lookupCacheEnabled = 0;
 621         else if (c == '1' || c == 'y' || c == 'Y')
 622                 lookupCacheEnabled = 1;
 623
 624         return count;
 625 }
 626
 627 static const struct file_operations cifs_lookup_cache_proc_fops = {
 628         .owner          = THIS_MODULE,
 629         .open           = cifs_lookup_cache_proc_open,
 630         .read           = seq_read,
 631         .llseek         = seq_lseek,
 632         .release        = single_release,
 633         .write          = cifs_lookup_cache_proc_write,
 634 };
 635
 636 static int traceSMB_proc_show(struct seq_file *m, void *v)
 637 {
 638         seq_printf(m, "%d\n", traceSMB);
 639         return 0;
 640 }
 641
 642 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 643 {
 644         return single_open(file, traceSMB_proc_show, NULL);
 645 }
 646
 647 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 648                 size_t count, loff_t *ppos)
 649 {
 650         char c;
 651         int rc;
 652
 653         rc = get_user(c, buffer);
 654         if (rc)
 655                 return rc;
 656         if (c == '0' || c == 'n' || c == 'N')
 657                 traceSMB = 0;
 658         else if (c == '1' || c == 'y' || c == 'Y')
 659                 traceSMB = 1;
 660
 661         return count;
 662 }
 663
 664 static const struct file_operations traceSMB_proc_fops = {
 665         .owner          = THIS_MODULE,
 666         .open           = traceSMB_proc_open,
 667         .read           = seq_read,
 668         .llseek         = seq_lseek,
 669         .release        = single_release,
 670         .write          = traceSMB_proc_write,
 671 };
 672
 673 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 674 {
 675         seq_printf(m, "%d\n", multiuser_mount);
 676         return 0;
 677 }
 678
 679 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 680 {
 681         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 682 }
 683
 684 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 685                 const char __user *buffer, size_t count, loff_t *ppos)
 686 {
 687         char c;
 688         int rc;
 689
 690         rc = get_user(c, buffer);
 691         if (rc)
 692                 return rc;
 693         if (c == '0' || c == 'n' || c == 'N')
 694                 multiuser_mount = 0;
 695         else if (c == '1' || c == 'y' || c == 'Y')
 696                 multiuser_mount = 1;
 697
 698         return count;
 699 }
 700
 701 static const struct file_operations cifs_multiuser_mount_proc_fops = {
 702         .owner          = THIS_MODULE,
 703         .open           = cifs_multiuser_mount_proc_open,
 704         .read           = seq_read,
 705         .llseek         = seq_lseek,
 706         .release        = single_release,
 707         .write          = cifs_multiuser_mount_proc_write,
 708 };
 709
 710 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 711 {
 712         seq_printf(m, "0x%x\n", extended_security);
 713         return 0;
 714 }
 715
 716 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 717 {
 718         return single_open(file, cifs_security_flags_proc_show, NULL);
 719 }
 720
 721 static ssize_t cifs_security_flags_proc_write(struct file *file,
 722                 const char __user *buffer, size_t count, loff_t *ppos)
 723 {
 724         unsigned int flags;
 725         char flags_string[12];
 726         char c;
 727
 728         if ((count < 1) || (count > 11))
 729                 return -EINVAL;
 730
 731         memset(flags_string, 0, 12);
 732
 733         if (copy_from_user(flags_string, buffer, count))
 734                 return -EFAULT;
 735
 736         if (count < 3) {
 737                 /* single char or single char followed by null */
 738                 c = flags_string[0];
 739                 if (c == '0' || c == 'n' || c == 'N') {
 740                         extended_security = CIFSSEC_DEF; /* default */
 741                         return count;
 742                 } else if (c == '1' || c == 'y' || c == 'Y') {
 743                         extended_security = CIFSSEC_MAX;
 744                         return count;
 745                 } else if (!isdigit(c)) {
 746                         cERROR(1, ("invalid flag %c", c));
 747                         return -EINVAL;
 748                 }
 749         }
 750         /* else we have a number */
 751
 752         flags = simple_strtoul(flags_string, NULL, 0);
 753
 754         cFYI(1, ("sec flags 0x%x", flags));
 755
 756         if (flags <= 0)  {
 757                 cERROR(1, ("invalid security flags %s", flags_string));
 758                 return -EINVAL;
 759         }
 760
 761         if (flags & ~CIFSSEC_MASK) {
 762                 cERROR(1, ("attempt to set unsupported security flags 0x%x",
 763                         flags & ~CIFSSEC_MASK));
 764                 return -EINVAL;
 765         }
 766         /* flags look ok - update the global security flags for cifs module */
 767         extended_security = flags;
 768         if (extended_security & CIFSSEC_MUST_SIGN) {
 769                 /* requiring signing implies signing is allowed */
 770                 extended_security |= CIFSSEC_MAY_SIGN;
 771                 cFYI(1, ("packet signing now required"));
 772         } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
 773                 cFYI(1, ("packet signing disabled"));
 774         }
 775         /* BB should we turn on MAY flags for other MUST options? */
 776         return count;
 777 }
 778
 779 static const struct file_operations cifs_security_flags_proc_fops = {
 780         .owner          = THIS_MODULE,
 781         .open           = cifs_security_flags_proc_open,
 782         .read           = seq_read,
 783         .llseek         = seq_lseek,
 784         .release        = single_release,
 785         .write          = cifs_security_flags_proc_write,
 786 };
 787 #else
 788 inline void cifs_proc_init(void)
 789 {
 790 }
 791
 792 inline void cifs_proc_clean(void)
 793 {
 794 }
 795 #endif /* PROC_FS */