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 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, "Features: ");
 123 #ifdef CONFIG_CIFS_DFS_UPCALL
 124         seq_printf(m, "dfs");
 125         seq_putc(m, ' ');
 126 #endif
 127 #ifdef CONFIG_CIFS_FSCACHE
 128         seq_printf(m, "fscache");
 129         seq_putc(m, ' ');
 130 #endif
 131 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 132         seq_printf(m, "lanman");
 133         seq_putc(m, ' ');
 134 #endif
 135 #ifdef CONFIG_CIFS_POSIX
 136         seq_printf(m, "posix");
 137         seq_putc(m, ' ');
 138 #endif
 139 #ifdef CONFIG_CIFS_UPCALL
 140         seq_printf(m, "spnego");
 141         seq_putc(m, ' ');
 142 #endif
 143 #ifdef CONFIG_CIFS_XATTR
 144         seq_printf(m, "xattr");
 145 #endif
 146         seq_putc(m, '\n');
 147         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 148         seq_printf(m, "Servers:");
 149
 150         i = 0;
 151         spin_lock(&cifs_tcp_ses_lock);
 152         list_for_each(tmp1, &cifs_tcp_ses_list) {
 153                 server = list_entry(tmp1, struct TCP_Server_Info,
 154                                     tcp_ses_list);
 155                 i++;
 156                 list_for_each(tmp2, &server->smb_ses_list) {
 157                         ses = list_entry(tmp2, struct cifsSesInfo,
 158                                          smb_ses_list);
 159                         if ((ses->serverDomain == NULL) ||
 160                                 (ses->serverOS == NULL) ||
 161                                 (ses->serverNOS == NULL)) {
 162                                 seq_printf(m, "\n%d) entry for %s not fully "
 163                                            "displayed\n\t", i, ses->serverName);
 164                         } else {
 165                                 seq_printf(m,
 166                                     "\n%d) Name: %s  Domain: %s Uses: %d OS:"
 167                                     " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
 168                                     " session status: %d\t",
 169                                 i, ses->serverName, ses->serverDomain,
 170                                 ses->ses_count, ses->serverOS, ses->serverNOS,
 171                                 ses->capabilities, ses->status);
 172                         }
 173                         seq_printf(m, "TCP status: %d\n\tLocal Users To "
 174                                    "Server: %d SecMode: 0x%x Req On Wire: %d",
 175                                    server->tcpStatus, server->srv_count,
 176                                    server->secMode,
 177                                    atomic_read(&server->inFlight));
 178
 179 #ifdef CONFIG_CIFS_STATS2
 180                         seq_printf(m, " In Send: %d In MaxReq Wait: %d",
 181                                 atomic_read(&server->inSend),
 182                                 atomic_read(&server->num_waiters));
 183 #endif
 184
 185                         seq_puts(m, "\n\tShares:");
 186                         j = 0;
 187                         list_for_each(tmp3, &ses->tcon_list) {
 188                                 tcon = list_entry(tmp3, struct cifsTconInfo,
 189                                                   tcon_list);
 190                                 ++j;
 191                                 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
 192                                 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
 193                                            tcon->treeName, tcon->tc_count);
 194                                 if (tcon->nativeFileSystem) {
 195                                         seq_printf(m, "Type: %s ",
 196                                                    tcon->nativeFileSystem);
 197                                 }
 198                                 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
 199                                         "\nPathComponentMax: %d Status: 0x%d",
 200                                         le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
 201                                         le32_to_cpu(tcon->fsAttrInfo.Attributes),
 202                                         le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 203                                         tcon->tidStatus);
 204                                 if (dev_type == FILE_DEVICE_DISK)
 205                                         seq_puts(m, " type: DISK ");
 206                                 else if (dev_type == FILE_DEVICE_CD_ROM)
 207                                         seq_puts(m, " type: CDROM ");
 208                                 else
 209                                         seq_printf(m, " type: %d ", dev_type);
 210
 211                                 if (tcon->need_reconnect)
 212                                         seq_puts(m, "\tDISCONNECTED ");
 213                                 seq_putc(m, '\n');
 214                         }
 215
 216                         seq_puts(m, "\n\tMIDs:\n");
 217
 218                         spin_lock(&GlobalMid_Lock);
 219                         list_for_each(tmp3, &server->pending_mid_q) {
 220                                 mid_entry = list_entry(tmp3, struct mid_q_entry,
 221                                         qhead);
 222                                 seq_printf(m, "\tState: %d com: %d pid:"
 223                                                 " %d tsk: %p mid %d\n",
 224                                                 mid_entry->midState,
 225                                                 (int)mid_entry->command,
 226                                                 mid_entry->pid,
 227                                                 mid_entry->tsk,
 228                                                 mid_entry->mid);
 229                         }
 230                         spin_unlock(&GlobalMid_Lock);
 231                 }
 232         }
 233         spin_unlock(&cifs_tcp_ses_lock);
 234         seq_putc(m, '\n');
 235
 236         /* BB add code to dump additional info such as TCP session info now */
 237         return 0;
 238 }
 239
 240 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
 241 {
 242         return single_open(file, cifs_debug_data_proc_show, NULL);
 243 }
 244
 245 static const struct file_operations cifs_debug_data_proc_fops = {
 246         .owner          = THIS_MODULE,
 247         .open           = cifs_debug_data_proc_open,
 248         .read           = seq_read,
 249         .llseek         = seq_lseek,
 250         .release        = single_release,
 251 };
 252
 253 #ifdef CONFIG_CIFS_STATS
 254 static ssize_t cifs_stats_proc_write(struct file *file,
 255                 const char __user *buffer, size_t count, loff_t *ppos)
 256 {
 257         char c;
 258         int rc;
 259         struct list_head *tmp1, *tmp2, *tmp3;
 260         struct TCP_Server_Info *server;
 261         struct cifsSesInfo *ses;
 262         struct cifsTconInfo *tcon;
 263
 264         rc = get_user(c, buffer);
 265         if (rc)
 266                 return rc;
 267
 268         if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 269 #ifdef CONFIG_CIFS_STATS2
 270                 atomic_set(&totBufAllocCount, 0);
 271                 atomic_set(&totSmBufAllocCount, 0);
 272 #endif /* CONFIG_CIFS_STATS2 */
 273                 spin_lock(&cifs_tcp_ses_lock);
 274                 list_for_each(tmp1, &cifs_tcp_ses_list) {
 275                         server = list_entry(tmp1, struct TCP_Server_Info,
 276                                             tcp_ses_list);
 277                         list_for_each(tmp2, &server->smb_ses_list) {
 278                                 ses = list_entry(tmp2, struct cifsSesInfo,
 279                                                  smb_ses_list);
 280                                 list_for_each(tmp3, &ses->tcon_list) {
 281                                         tcon = list_entry(tmp3,
 282                                                           struct cifsTconInfo,
 283                                                           tcon_list);
 284                                         atomic_set(&tcon->num_smbs_sent, 0);
 285                                         atomic_set(&tcon->num_writes, 0);
 286                                         atomic_set(&tcon->num_reads, 0);
 287                                         atomic_set(&tcon->num_oplock_brks, 0);
 288                                         atomic_set(&tcon->num_opens, 0);
 289                                         atomic_set(&tcon->num_posixopens, 0);
 290                                         atomic_set(&tcon->num_posixmkdirs, 0);
 291                                         atomic_set(&tcon->num_closes, 0);
 292                                         atomic_set(&tcon->num_deletes, 0);
 293                                         atomic_set(&tcon->num_mkdirs, 0);
 294                                         atomic_set(&tcon->num_rmdirs, 0);
 295                                         atomic_set(&tcon->num_renames, 0);
 296                                         atomic_set(&tcon->num_t2renames, 0);
 297                                         atomic_set(&tcon->num_ffirst, 0);
 298                                         atomic_set(&tcon->num_fnext, 0);
 299                                         atomic_set(&tcon->num_fclose, 0);
 300                                         atomic_set(&tcon->num_hardlinks, 0);
 301                                         atomic_set(&tcon->num_symlinks, 0);
 302                                         atomic_set(&tcon->num_locks, 0);
 303                                 }
 304                         }
 305                 }
 306                 spin_unlock(&cifs_tcp_ses_lock);
 307         }
 308
 309         return count;
 310 }
 311
 312 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 313 {
 314         int i;
 315         struct list_head *tmp1, *tmp2, *tmp3;
 316         struct TCP_Server_Info *server;
 317         struct cifsSesInfo *ses;
 318         struct cifsTconInfo *tcon;
 319
 320         seq_printf(m,
 321                         "Resources in use\nCIFS Session: %d\n",
 322                         sesInfoAllocCount.counter);
 323         seq_printf(m, "Share (unique mount targets): %d\n",
 324                         tconInfoAllocCount.counter);
 325         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 326                         bufAllocCount.counter,
 327                         cifs_min_rcv + tcpSesAllocCount.counter);
 328         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 329                         smBufAllocCount.counter, cifs_min_small);
 330 #ifdef CONFIG_CIFS_STATS2
 331         seq_printf(m, "Total Large %d Small %d Allocations\n",
 332                                 atomic_read(&totBufAllocCount),
 333                                 atomic_read(&totSmBufAllocCount));
 334 #endif /* CONFIG_CIFS_STATS2 */
 335
 336         seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
 337         seq_printf(m,
 338                 "\n%d session %d share reconnects\n",
 339                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 340
 341         seq_printf(m,
 342                 "Total vfs operations: %d maximum at one time: %d\n",
 343                 GlobalCurrentXid, GlobalMaxActiveXid);
 344
 345         i = 0;
 346         spin_lock(&cifs_tcp_ses_lock);
 347         list_for_each(tmp1, &cifs_tcp_ses_list) {
 348                 server = list_entry(tmp1, struct TCP_Server_Info,
 349                                     tcp_ses_list);
 350                 list_for_each(tmp2, &server->smb_ses_list) {
 351                         ses = list_entry(tmp2, struct cifsSesInfo,
 352                                          smb_ses_list);
 353                         list_for_each(tmp3, &ses->tcon_list) {
 354                                 tcon = list_entry(tmp3,
 355                                                   struct cifsTconInfo,
 356                                                   tcon_list);
 357                                 i++;
 358                                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 359                                 if (tcon->need_reconnect)
 360                                         seq_puts(m, "\tDISCONNECTED ");
 361                                 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
 362                                         atomic_read(&tcon->num_smbs_sent),
 363                                         atomic_read(&tcon->num_oplock_brks));
 364                                 seq_printf(m, "\nReads:  %d Bytes: %lld",
 365                                         atomic_read(&tcon->num_reads),
 366                                         (long long)(tcon->bytes_read));
 367                                 seq_printf(m, "\nWrites: %d Bytes: %lld",
 368                                         atomic_read(&tcon->num_writes),
 369                                         (long long)(tcon->bytes_written));
 370                                 seq_printf(m, "\nFlushes: %d",
 371                                         atomic_read(&tcon->num_flushes));
 372                                 seq_printf(m, "\nLocks: %d HardLinks: %d "
 373                                               "Symlinks: %d",
 374                                         atomic_read(&tcon->num_locks),
 375                                         atomic_read(&tcon->num_hardlinks),
 376                                         atomic_read(&tcon->num_symlinks));
 377                                 seq_printf(m, "\nOpens: %d Closes: %d "
 378                                               "Deletes: %d",
 379                                         atomic_read(&tcon->num_opens),
 380                                         atomic_read(&tcon->num_closes),
 381                                         atomic_read(&tcon->num_deletes));
 382                                 seq_printf(m, "\nPosix Opens: %d "
 383                                               "Posix Mkdirs: %d",
 384                                         atomic_read(&tcon->num_posixopens),
 385                                         atomic_read(&tcon->num_posixmkdirs));
 386                                 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 387                                         atomic_read(&tcon->num_mkdirs),
 388                                         atomic_read(&tcon->num_rmdirs));
 389                                 seq_printf(m, "\nRenames: %d T2 Renames %d",
 390                                         atomic_read(&tcon->num_renames),
 391                                         atomic_read(&tcon->num_t2renames));
 392                                 seq_printf(m, "\nFindFirst: %d FNext %d "
 393                                               "FClose %d",
 394                                         atomic_read(&tcon->num_ffirst),
 395                                         atomic_read(&tcon->num_fnext),
 396                                         atomic_read(&tcon->num_fclose));
 397                         }
 398                 }
 399         }
 400         spin_unlock(&cifs_tcp_ses_lock);
 401
 402         seq_putc(m, '\n');
 403         return 0;
 404 }
 405
 406 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 407 {
 408         return single_open(file, cifs_stats_proc_show, NULL);
 409 }
 410
 411 static const struct file_operations cifs_stats_proc_fops = {
 412         .owner          = THIS_MODULE,
 413         .open           = cifs_stats_proc_open,
 414         .read           = seq_read,
 415         .llseek         = seq_lseek,
 416         .release        = single_release,
 417         .write          = cifs_stats_proc_write,
 418 };
 419 #endif /* STATS */
 420
 421 static struct proc_dir_entry *proc_fs_cifs;
 422 static const struct file_operations cifsFYI_proc_fops;
 423 static const struct file_operations cifs_oplock_proc_fops;
 424 static const struct file_operations cifs_lookup_cache_proc_fops;
 425 static const struct file_operations traceSMB_proc_fops;
 426 static const struct file_operations cifs_multiuser_mount_proc_fops;
 427 static const struct file_operations cifs_security_flags_proc_fops;
 428 static const struct file_operations cifs_experimental_proc_fops;
 429 static const struct file_operations cifs_linux_ext_proc_fops;
 430
 431 void
 432 cifs_proc_init(void)
 433 {
 434         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 435         if (proc_fs_cifs == NULL)
 436                 return;
 437
 438         proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
 439
 440 #ifdef CONFIG_CIFS_STATS
 441         proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
 442 #endif /* STATS */
 443         proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
 444         proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
 445         proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
 446         proc_create("Experimental", 0, proc_fs_cifs,
 447                     &cifs_experimental_proc_fops);
 448         proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
 449                     &cifs_linux_ext_proc_fops);
 450         proc_create("MultiuserMount", 0, proc_fs_cifs,
 451                     &cifs_multiuser_mount_proc_fops);
 452         proc_create("SecurityFlags", 0, proc_fs_cifs,
 453                     &cifs_security_flags_proc_fops);
 454         proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
 455                     &cifs_lookup_cache_proc_fops);
 456 }
 457
 458 void
 459 cifs_proc_clean(void)
 460 {
 461         if (proc_fs_cifs == NULL)
 462                 return;
 463
 464         remove_proc_entry("DebugData", proc_fs_cifs);
 465         remove_proc_entry("cifsFYI", proc_fs_cifs);
 466         remove_proc_entry("traceSMB", proc_fs_cifs);
 467 #ifdef CONFIG_CIFS_STATS
 468         remove_proc_entry("Stats", proc_fs_cifs);
 469 #endif
 470         remove_proc_entry("MultiuserMount", proc_fs_cifs);
 471         remove_proc_entry("OplockEnabled", proc_fs_cifs);
 472         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 473         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 474         remove_proc_entry("Experimental", proc_fs_cifs);
 475         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 476         remove_proc_entry("fs/cifs", NULL);
 477 }
 478
 479 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 480 {
 481         seq_printf(m, "%d\n", cifsFYI);
 482         return 0;
 483 }
 484
 485 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 486 {
 487         return single_open(file, cifsFYI_proc_show, NULL);
 488 }
 489
 490 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 491                 size_t count, loff_t *ppos)
 492 {
 493         char c;
 494         int rc;
 495
 496         rc = get_user(c, buffer);
 497         if (rc)
 498                 return rc;
 499         if (c == '0' || c == 'n' || c == 'N')
 500                 cifsFYI = 0;
 501         else if (c == '1' || c == 'y' || c == 'Y')
 502                 cifsFYI = 1;
 503         else if ((c > '1') && (c <= '9'))
 504                 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
 505
 506         return count;
 507 }
 508
 509 static const struct file_operations cifsFYI_proc_fops = {
 510         .owner          = THIS_MODULE,
 511         .open           = cifsFYI_proc_open,
 512         .read           = seq_read,
 513         .llseek         = seq_lseek,
 514         .release        = single_release,
 515         .write          = cifsFYI_proc_write,
 516 };
 517
 518 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 519 {
 520         seq_printf(m, "%d\n", oplockEnabled);
 521         return 0;
 522 }
 523
 524 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 525 {
 526         return single_open(file, cifs_oplock_proc_show, NULL);
 527 }
 528
 529 static ssize_t cifs_oplock_proc_write(struct file *file,
 530                 const char __user *buffer, size_t count, loff_t *ppos)
 531 {
 532         char c;
 533         int rc;
 534
 535         rc = get_user(c, buffer);
 536         if (rc)
 537                 return rc;
 538         if (c == '0' || c == 'n' || c == 'N')
 539                 oplockEnabled = 0;
 540         else if (c == '1' || c == 'y' || c == 'Y')
 541                 oplockEnabled = 1;
 542
 543         return count;
 544 }
 545
 546 static const struct file_operations cifs_oplock_proc_fops = {
 547         .owner          = THIS_MODULE,
 548         .open           = cifs_oplock_proc_open,
 549         .read           = seq_read,
 550         .llseek         = seq_lseek,
 551         .release        = single_release,
 552         .write          = cifs_oplock_proc_write,
 553 };
 554
 555 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
 556 {
 557         seq_printf(m, "%d\n", experimEnabled);
 558         return 0;
 559 }
 560
 561 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
 562 {
 563         return single_open(file, cifs_experimental_proc_show, NULL);
 564 }
 565
 566 static ssize_t cifs_experimental_proc_write(struct file *file,
 567                 const char __user *buffer, size_t count, loff_t *ppos)
 568 {
 569         char c;
 570         int rc;
 571
 572         rc = get_user(c, buffer);
 573         if (rc)
 574                 return rc;
 575         if (c == '0' || c == 'n' || c == 'N')
 576                 experimEnabled = 0;
 577         else if (c == '1' || c == 'y' || c == 'Y')
 578                 experimEnabled = 1;
 579         else if (c == '2')
 580                 experimEnabled = 2;
 581
 582         return count;
 583 }
 584
 585 static const struct file_operations cifs_experimental_proc_fops = {
 586         .owner          = THIS_MODULE,
 587         .open           = cifs_experimental_proc_open,
 588         .read           = seq_read,
 589         .llseek         = seq_lseek,
 590         .release        = single_release,
 591         .write          = cifs_experimental_proc_write,
 592 };
 593
 594 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 595 {
 596         seq_printf(m, "%d\n", linuxExtEnabled);
 597         return 0;
 598 }
 599
 600 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 601 {
 602         return single_open(file, cifs_linux_ext_proc_show, NULL);
 603 }
 604
 605 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 606                 const char __user *buffer, size_t count, loff_t *ppos)
 607 {
 608         char c;
 609         int rc;
 610
 611         rc = get_user(c, buffer);
 612         if (rc)
 613                 return rc;
 614         if (c == '0' || c == 'n' || c == 'N')
 615                 linuxExtEnabled = 0;
 616         else if (c == '1' || c == 'y' || c == 'Y')
 617                 linuxExtEnabled = 1;
 618
 619         return count;
 620 }
 621
 622 static const struct file_operations cifs_linux_ext_proc_fops = {
 623         .owner          = THIS_MODULE,
 624         .open           = cifs_linux_ext_proc_open,
 625         .read           = seq_read,
 626         .llseek         = seq_lseek,
 627         .release        = single_release,
 628         .write          = cifs_linux_ext_proc_write,
 629 };
 630
 631 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 632 {
 633         seq_printf(m, "%d\n", lookupCacheEnabled);
 634         return 0;
 635 }
 636
 637 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 638 {
 639         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 640 }
 641
 642 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 643                 const char __user *buffer, size_t count, loff_t *ppos)
 644 {
 645         char c;
 646         int rc;
 647
 648         rc = get_user(c, buffer);
 649         if (rc)
 650                 return rc;
 651         if (c == '0' || c == 'n' || c == 'N')
 652                 lookupCacheEnabled = 0;
 653         else if (c == '1' || c == 'y' || c == 'Y')
 654                 lookupCacheEnabled = 1;
 655
 656         return count;
 657 }
 658
 659 static const struct file_operations cifs_lookup_cache_proc_fops = {
 660         .owner          = THIS_MODULE,
 661         .open           = cifs_lookup_cache_proc_open,
 662         .read           = seq_read,
 663         .llseek         = seq_lseek,
 664         .release        = single_release,
 665         .write          = cifs_lookup_cache_proc_write,
 666 };
 667
 668 static int traceSMB_proc_show(struct seq_file *m, void *v)
 669 {
 670         seq_printf(m, "%d\n", traceSMB);
 671         return 0;
 672 }
 673
 674 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 675 {
 676         return single_open(file, traceSMB_proc_show, NULL);
 677 }
 678
 679 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 680                 size_t count, loff_t *ppos)
 681 {
 682         char c;
 683         int rc;
 684
 685         rc = get_user(c, buffer);
 686         if (rc)
 687                 return rc;
 688         if (c == '0' || c == 'n' || c == 'N')
 689                 traceSMB = 0;
 690         else if (c == '1' || c == 'y' || c == 'Y')
 691                 traceSMB = 1;
 692
 693         return count;
 694 }
 695
 696 static const struct file_operations traceSMB_proc_fops = {
 697         .owner          = THIS_MODULE,
 698         .open           = traceSMB_proc_open,
 699         .read           = seq_read,
 700         .llseek         = seq_lseek,
 701         .release        = single_release,
 702         .write          = traceSMB_proc_write,
 703 };
 704
 705 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
 706 {
 707         seq_printf(m, "%d\n", multiuser_mount);
 708         return 0;
 709 }
 710
 711 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
 712 {
 713         return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 714 }
 715
 716 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 717                 const char __user *buffer, size_t count, loff_t *ppos)
 718 {
 719         char c;
 720         int rc;
 721
 722         rc = get_user(c, buffer);
 723         if (rc)
 724                 return rc;
 725         if (c == '0' || c == 'n' || c == 'N')
 726                 multiuser_mount = 0;
 727         else if (c == '1' || c == 'y' || c == 'Y')
 728                 multiuser_mount = 1;
 729
 730         return count;
 731 }
 732
 733 static const struct file_operations cifs_multiuser_mount_proc_fops = {
 734         .owner          = THIS_MODULE,
 735         .open           = cifs_multiuser_mount_proc_open,
 736         .read           = seq_read,
 737         .llseek         = seq_lseek,
 738         .release        = single_release,
 739         .write          = cifs_multiuser_mount_proc_write,
 740 };
 741
 742 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 743 {
 744         seq_printf(m, "0x%x\n", global_secflags);
 745         return 0;
 746 }
 747
 748 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 749 {
 750         return single_open(file, cifs_security_flags_proc_show, NULL);
 751 }
 752
 753 static ssize_t cifs_security_flags_proc_write(struct file *file,
 754                 const char __user *buffer, size_t count, loff_t *ppos)
 755 {
 756         unsigned int flags;
 757         char flags_string[12];
 758         char c;
 759
 760         if ((count < 1) || (count > 11))
 761                 return -EINVAL;
 762
 763         memset(flags_string, 0, 12);
 764
 765         if (copy_from_user(flags_string, buffer, count))
 766                 return -EFAULT;
 767
 768         if (count < 3) {
 769                 /* single char or single char followed by null */
 770                 c = flags_string[0];
 771                 if (c == '0' || c == 'n' || c == 'N') {
 772                         global_secflags = CIFSSEC_DEF; /* default */
 773                         return count;
 774                 } else if (c == '1' || c == 'y' || c == 'Y') {
 775                         global_secflags = CIFSSEC_MAX;
 776                         return count;
 777                 } else if (!isdigit(c)) {
 778                         cERROR(1, "invalid flag %c", c);
 779                         return -EINVAL;
 780                 }
 781         }
 782         /* else we have a number */
 783
 784         flags = simple_strtoul(flags_string, NULL, 0);
 785
 786         cFYI(1, "sec flags 0x%x", flags);
 787
 788         if (flags <= 0)  {
 789                 cERROR(1, "invalid security flags %s", flags_string);
 790                 return -EINVAL;
 791         }
 792
 793         if (flags & ~CIFSSEC_MASK) {
 794                 cERROR(1, "attempt to set unsupported security flags 0x%x",
 795                         flags & ~CIFSSEC_MASK);
 796                 return -EINVAL;
 797         }
 798         /* flags look ok - update the global security flags for cifs module */
 799         global_secflags = flags;
 800         if (global_secflags & CIFSSEC_MUST_SIGN) {
 801                 /* requiring signing implies signing is allowed */
 802                 global_secflags |= CIFSSEC_MAY_SIGN;
 803                 cFYI(1, "packet signing now required");
 804         } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
 805                 cFYI(1, "packet signing disabled");
 806         }
 807         /* BB should we turn on MAY flags for other MUST options? */
 808         return count;
 809 }
 810
 811 static const struct file_operations cifs_security_flags_proc_fops = {
 812         .owner          = THIS_MODULE,
 813         .open           = cifs_security_flags_proc_open,
 814         .read           = seq_read,
 815         .llseek         = seq_lseek,
 816         .release        = single_release,
 817         .write          = cifs_security_flags_proc_write,
 818 };
 819 #else
 820 inline void cifs_proc_init(void)
 821 {
 822 }
 823
 824 inline void cifs_proc_clean(void)
 825 {
 826 }
 827 #endif /* PROC_FS */