linux/fs/cifs/cifs_debug.c
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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
  34void
  35cifs_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
  61void 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
  70void 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
 108static 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
 238static 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
 243static 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
 252static 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
 310static 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
 404static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 405{
 406        return single_open(file, cifs_stats_proc_show, NULL);
 407}
 408
 409static 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
 419static struct proc_dir_entry *proc_fs_cifs;
 420static const struct file_operations cifsFYI_proc_fops;
 421static const struct file_operations cifs_oplock_proc_fops;
 422static const struct file_operations cifs_lookup_cache_proc_fops;
 423static const struct file_operations traceSMB_proc_fops;
 424static const struct file_operations cifs_multiuser_mount_proc_fops;
 425static const struct file_operations cifs_security_flags_proc_fops;
 426static const struct file_operations cifs_linux_ext_proc_fops;
 427
 428void
 429cifs_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
 453void
 454cifs_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
 473static int cifsFYI_proc_show(struct seq_file *m, void *v)
 474{
 475        seq_printf(m, "%d\n", cifsFYI);
 476        return 0;
 477}
 478
 479static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 480{
 481        return single_open(file, cifsFYI_proc_show, NULL);
 482}
 483
 484static 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
 503static 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
 512static int cifs_oplock_proc_show(struct seq_file *m, void *v)
 513{
 514        seq_printf(m, "%d\n", oplockEnabled);
 515        return 0;
 516}
 517
 518static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
 519{
 520        return single_open(file, cifs_oplock_proc_show, NULL);
 521}
 522
 523static 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
 540static 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
 549static 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
 555static 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
 560static 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
 577static 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
 586static 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
 592static 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
 597static 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
 614static 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
 623static int traceSMB_proc_show(struct seq_file *m, void *v)
 624{
 625        seq_printf(m, "%d\n", traceSMB);
 626        return 0;
 627}
 628
 629static int traceSMB_proc_open(struct inode *inode, struct file *file)
 630{
 631        return single_open(file, traceSMB_proc_show, NULL);
 632}
 633
 634static 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
 651static 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
 660static 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
 666static 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
 671static 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
 688static 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
 697static 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
 703static 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
 708static 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
 766static 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
 775inline void cifs_proc_init(void)
 776{
 777}
 778
 779inline void cifs_proc_clean(void)
 780{
 781}
 782#endif /* PROC_FS */
 783