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Use dentry_path() to create full path to inode object
[pohmelfs.git] / fs / cifs / cifs_debug.c
blob24b3dfc05282e2214df5f3eb014eb124651d6ffe
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(smb));
67 }
68
69
70 void cifs_dump_mids(struct TCP_Server_Info *server)
71 {
72 struct list_head *tmp;
73 struct mid_q_entry *mid_entry;
74
75 if (server == NULL)
76 return;
77
78 cERROR(1, "Dump pending requests:");
79 spin_lock(&GlobalMid_Lock);
80 list_for_each(tmp, &server->pending_mid_q) {
81 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
82 cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %d",
83 mid_entry->midState,
84 (int)mid_entry->command,
85 mid_entry->pid,
86 mid_entry->callback_data,
87 mid_entry->mid);
88 #ifdef CONFIG_CIFS_STATS2
89 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
90 mid_entry->largeBuf,
91 mid_entry->resp_buf,
92 mid_entry->when_received,
93 jiffies);
94 #endif /* STATS2 */
95 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
96 mid_entry->multiEnd);
97 if (mid_entry->resp_buf) {
98 cifs_dump_detail(mid_entry->resp_buf);
99 cifs_dump_mem("existing buf: ",
100 mid_entry->resp_buf, 62);
101 }
102 }
103 spin_unlock(&GlobalMid_Lock);
104 }
105 #endif /* CONFIG_CIFS_DEBUG2 */
106
107 #ifdef CONFIG_PROC_FS
108 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
109 {
110 struct list_head *tmp1, *tmp2, *tmp3;
111 struct mid_q_entry *mid_entry;
112 struct TCP_Server_Info *server;
113 struct cifs_ses *ses;
114 struct cifs_tcon *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 cifs_ses,
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->sec_mode,
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->in_send),
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 cifs_tcon,
187 tcon_list);
188 ++j;
189 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
190 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
191 tcon->treeName, tcon->tc_count);
192 if (tcon->nativeFileSystem) {
193 seq_printf(m, "Type: %s ",
194 tcon->nativeFileSystem);
195 }
196 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
197 "\nPathComponentMax: %d Status: 0x%d",
198 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
199 le32_to_cpu(tcon->fsAttrInfo.Attributes),
200 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
201 tcon->tidStatus);
202 if (dev_type == FILE_DEVICE_DISK)
203 seq_puts(m, " type: DISK ");
204 else if (dev_type == FILE_DEVICE_CD_ROM)
205 seq_puts(m, " type: CDROM ");
206 else
207 seq_printf(m, " type: %d ", dev_type);
208
209 if (tcon->need_reconnect)
210 seq_puts(m, "\tDISCONNECTED ");
211 seq_putc(m, '\n');
212 }
213
214 seq_puts(m, "\n\tMIDs:\n");
215
216 spin_lock(&GlobalMid_Lock);
217 list_for_each(tmp3, &server->pending_mid_q) {
218 mid_entry = list_entry(tmp3, struct mid_q_entry,
219 qhead);
220 seq_printf(m, "\tState: %d com: %d pid:"
221 " %d cbdata: %p mid %d\n",
222 mid_entry->midState,
223 (int)mid_entry->command,
224 mid_entry->pid,
225 mid_entry->callback_data,
226 mid_entry->mid);
227 }
228 spin_unlock(&GlobalMid_Lock);
229 }
230 }
231 spin_unlock(&cifs_tcp_ses_lock);
232 seq_putc(m, '\n');
233
234 /* BB add code to dump additional info such as TCP session info now */
235 return 0;
236 }
237
238 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
239 {
240 return single_open(file, cifs_debug_data_proc_show, NULL);
241 }
242
243 static const struct file_operations cifs_debug_data_proc_fops = {
244 .owner = THIS_MODULE,
245 .open = cifs_debug_data_proc_open,
246 .read = seq_read,
247 .llseek = seq_lseek,
248 .release = single_release,
249 };
250
251 #ifdef CONFIG_CIFS_STATS
252 static ssize_t cifs_stats_proc_write(struct file *file,
253 const char __user *buffer, size_t count, loff_t *ppos)
254 {
255 char c;
256 int rc;
257 struct list_head *tmp1, *tmp2, *tmp3;
258 struct TCP_Server_Info *server;
259 struct cifs_ses *ses;
260 struct cifs_tcon *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 cifs_ses,
277 smb_ses_list);
278 list_for_each(tmp3, &ses->tcon_list) {
279 tcon = list_entry(tmp3,
280 struct cifs_tcon,
281 tcon_list);
282 atomic_set(&tcon->num_smbs_sent, 0);
283 atomic_set(&tcon->num_writes, 0);
284 atomic_set(&tcon->num_reads, 0);
285 atomic_set(&tcon->num_oplock_brks, 0);
286 atomic_set(&tcon->num_opens, 0);
287 atomic_set(&tcon->num_posixopens, 0);
288 atomic_set(&tcon->num_posixmkdirs, 0);
289 atomic_set(&tcon->num_closes, 0);
290 atomic_set(&tcon->num_deletes, 0);
291 atomic_set(&tcon->num_mkdirs, 0);
292 atomic_set(&tcon->num_rmdirs, 0);
293 atomic_set(&tcon->num_renames, 0);
294 atomic_set(&tcon->num_t2renames, 0);
295 atomic_set(&tcon->num_ffirst, 0);
296 atomic_set(&tcon->num_fnext, 0);
297 atomic_set(&tcon->num_fclose, 0);
298 atomic_set(&tcon->num_hardlinks, 0);
299 atomic_set(&tcon->num_symlinks, 0);
300 atomic_set(&tcon->num_locks, 0);
301 }
302 }
303 }
304 spin_unlock(&cifs_tcp_ses_lock);
305 }
306
307 return count;
308 }
309
310 static int cifs_stats_proc_show(struct seq_file *m, void *v)
311 {
312 int i;
313 struct list_head *tmp1, *tmp2, *tmp3;
314 struct TCP_Server_Info *server;
315 struct cifs_ses *ses;
316 struct cifs_tcon *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 cifs_ses,
350 smb_ses_list);
351 list_for_each(tmp3, &ses->tcon_list) {
352 tcon = list_entry(tmp3,
353 struct cifs_tcon,
354 tcon_list);
355 i++;
356 seq_printf(m, "\n%d) %s", i, tcon->treeName);
357 if (tcon->need_reconnect)
358 seq_puts(m, "\tDISCONNECTED ");
359 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
360 atomic_read(&tcon->num_smbs_sent),
361 atomic_read(&tcon->num_oplock_brks));
362 seq_printf(m, "\nReads: %d Bytes: %lld",
363 atomic_read(&tcon->num_reads),
364 (long long)(tcon->bytes_read));
365 seq_printf(m, "\nWrites: %d Bytes: %lld",
366 atomic_read(&tcon->num_writes),
367 (long long)(tcon->bytes_written));
368 seq_printf(m, "\nFlushes: %d",
369 atomic_read(&tcon->num_flushes));
370 seq_printf(m, "\nLocks: %d HardLinks: %d "
371 "Symlinks: %d",
372 atomic_read(&tcon->num_locks),
373 atomic_read(&tcon->num_hardlinks),
374 atomic_read(&tcon->num_symlinks));
375 seq_printf(m, "\nOpens: %d Closes: %d "
376 "Deletes: %d",
377 atomic_read(&tcon->num_opens),
378 atomic_read(&tcon->num_closes),
379 atomic_read(&tcon->num_deletes));
380 seq_printf(m, "\nPosix Opens: %d "
381 "Posix Mkdirs: %d",
382 atomic_read(&tcon->num_posixopens),
383 atomic_read(&tcon->num_posixmkdirs));
384 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
385 atomic_read(&tcon->num_mkdirs),
386 atomic_read(&tcon->num_rmdirs));
387 seq_printf(m, "\nRenames: %d T2 Renames %d",
388 atomic_read(&tcon->num_renames),
389 atomic_read(&tcon->num_t2renames));
390 seq_printf(m, "\nFindFirst: %d FNext %d "
391 "FClose %d",
392 atomic_read(&tcon->num_ffirst),
393 atomic_read(&tcon->num_fnext),
394 atomic_read(&tcon->num_fclose));
395 }
396 }
397 }
398 spin_unlock(&cifs_tcp_ses_lock);
399
400 seq_putc(m, '\n');
401 return 0;
402 }
403
404 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
405 {
406 return single_open(file, cifs_stats_proc_show, NULL);
407 }
408
409 static const struct file_operations cifs_stats_proc_fops = {
410 .owner = THIS_MODULE,
411 .open = cifs_stats_proc_open,
412 .read = seq_read,
413 .llseek = seq_lseek,
414 .release = single_release,
415 .write = cifs_stats_proc_write,
416 };
417 #endif /* STATS */
418
419 static struct proc_dir_entry *proc_fs_cifs;
420 static const struct file_operations cifsFYI_proc_fops;
421 static const struct file_operations cifs_oplock_proc_fops;
422 static const struct file_operations cifs_lookup_cache_proc_fops;
423 static const struct file_operations traceSMB_proc_fops;
424 static const struct file_operations cifs_multiuser_mount_proc_fops;
425 static const struct file_operations cifs_security_flags_proc_fops;
426 static const struct file_operations cifs_linux_ext_proc_fops;
427
428 void
429 cifs_proc_init(void)
430 {
431 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
432 if (proc_fs_cifs == NULL)
433 return;
434
435 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
436
437 #ifdef CONFIG_CIFS_STATS
438 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
439 #endif /* STATS */
440 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
441 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
442 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
443 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
444 &cifs_linux_ext_proc_fops);
445 proc_create("MultiuserMount", 0, proc_fs_cifs,
446 &cifs_multiuser_mount_proc_fops);
447 proc_create("SecurityFlags", 0, proc_fs_cifs,
448 &cifs_security_flags_proc_fops);
449 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
450 &cifs_lookup_cache_proc_fops);
451 }
452
453 void
454 cifs_proc_clean(void)
455 {
456 if (proc_fs_cifs == NULL)
457 return;
458
459 remove_proc_entry("DebugData", proc_fs_cifs);
460 remove_proc_entry("cifsFYI", proc_fs_cifs);
461 remove_proc_entry("traceSMB", proc_fs_cifs);
462 #ifdef CONFIG_CIFS_STATS
463 remove_proc_entry("Stats", proc_fs_cifs);
464 #endif
465 remove_proc_entry("MultiuserMount", proc_fs_cifs);
466 remove_proc_entry("OplockEnabled", proc_fs_cifs);
467 remove_proc_entry("SecurityFlags", proc_fs_cifs);
468 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
469 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
470 remove_proc_entry("fs/cifs", NULL);
471 }
472
473 static int cifsFYI_proc_show(struct seq_file *m, void *v)
474 {
475 seq_printf(m, "%d\n", cifsFYI);
476 return 0;
477 }
478
479 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
480 {
481 return single_open(file, cifsFYI_proc_show, NULL);
482 }
483
484 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
485 size_t count, loff_t *ppos)
486 {
487 char c;
488 int rc;
489
490 rc = get_user(c, buffer);
491 if (rc)
492 return rc;
493 if (c == '0' || c == 'n' || c == 'N')
494 cifsFYI = 0;
495 else if (c == '1' || c == 'y' || c == 'Y')
496 cifsFYI = 1;
497 else if ((c > '1') && (c <= '9'))
498 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
499
500 return count;
501 }
502
503 static const struct file_operations cifsFYI_proc_fops = {
504 .owner = THIS_MODULE,
505 .open = cifsFYI_proc_open,
506 .read = seq_read,
507 .llseek = seq_lseek,
508 .release = single_release,
509 .write = cifsFYI_proc_write,
510 };
511
512 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
513 {
514 seq_printf(m, "%d\n", enable_oplocks);
515 return 0;
516 }
517
518 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
519 {
520 return single_open(file, cifs_oplock_proc_show, NULL);
521 }
522
523 static ssize_t cifs_oplock_proc_write(struct file *file,
524 const char __user *buffer, size_t count, loff_t *ppos)
525 {
526 char c;
527 int rc;
528
529 printk(KERN_WARNING "CIFS: The /proc/fs/cifs/OplockEnabled interface "
530 "will be removed in kernel version 3.4. Please migrate to "
531 "using the 'enable_oplocks' module parameter in cifs.ko.\n");
532 rc = get_user(c, buffer);
533 if (rc)
534 return rc;
535 if (c == '0' || c == 'n' || c == 'N')
536 enable_oplocks = false;
537 else if (c == '1' || c == 'y' || c == 'Y')
538 enable_oplocks = true;
539
540 return count;
541 }
542
543 static const struct file_operations cifs_oplock_proc_fops = {
544 .owner = THIS_MODULE,
545 .open = cifs_oplock_proc_open,
546 .read = seq_read,
547 .llseek = seq_lseek,
548 .release = single_release,
549 .write = cifs_oplock_proc_write,
550 };
551
552 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
553 {
554 seq_printf(m, "%d\n", linuxExtEnabled);
555 return 0;
556 }
557
558 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
559 {
560 return single_open(file, cifs_linux_ext_proc_show, NULL);
561 }
562
563 static ssize_t cifs_linux_ext_proc_write(struct file *file,
564 const char __user *buffer, size_t count, loff_t *ppos)
565 {
566 char c;
567 int rc;
568
569 rc = get_user(c, buffer);
570 if (rc)
571 return rc;
572 if (c == '0' || c == 'n' || c == 'N')
573 linuxExtEnabled = 0;
574 else if (c == '1' || c == 'y' || c == 'Y')
575 linuxExtEnabled = 1;
576
577 return count;
578 }
579
580 static const struct file_operations cifs_linux_ext_proc_fops = {
581 .owner = THIS_MODULE,
582 .open = cifs_linux_ext_proc_open,
583 .read = seq_read,
584 .llseek = seq_lseek,
585 .release = single_release,
586 .write = cifs_linux_ext_proc_write,
587 };
588
589 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
590 {
591 seq_printf(m, "%d\n", lookupCacheEnabled);
592 return 0;
593 }
594
595 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
596 {
597 return single_open(file, cifs_lookup_cache_proc_show, NULL);
598 }
599
600 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
601 const char __user *buffer, size_t count, loff_t *ppos)
602 {
603 char c;
604 int rc;
605
606 rc = get_user(c, buffer);
607 if (rc)
608 return rc;
609 if (c == '0' || c == 'n' || c == 'N')
610 lookupCacheEnabled = 0;
611 else if (c == '1' || c == 'y' || c == 'Y')
612 lookupCacheEnabled = 1;
613
614 return count;
615 }
616
617 static const struct file_operations cifs_lookup_cache_proc_fops = {
618 .owner = THIS_MODULE,
619 .open = cifs_lookup_cache_proc_open,
620 .read = seq_read,
621 .llseek = seq_lseek,
622 .release = single_release,
623 .write = cifs_lookup_cache_proc_write,
624 };
625
626 static int traceSMB_proc_show(struct seq_file *m, void *v)
627 {
628 seq_printf(m, "%d\n", traceSMB);
629 return 0;
630 }
631
632 static int traceSMB_proc_open(struct inode *inode, struct file *file)
633 {
634 return single_open(file, traceSMB_proc_show, NULL);
635 }
636
637 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
638 size_t count, loff_t *ppos)
639 {
640 char c;
641 int rc;
642
643 rc = get_user(c, buffer);
644 if (rc)
645 return rc;
646 if (c == '0' || c == 'n' || c == 'N')
647 traceSMB = 0;
648 else if (c == '1' || c == 'y' || c == 'Y')
649 traceSMB = 1;
650
651 return count;
652 }
653
654 static const struct file_operations traceSMB_proc_fops = {
655 .owner = THIS_MODULE,
656 .open = traceSMB_proc_open,
657 .read = seq_read,
658 .llseek = seq_lseek,
659 .release = single_release,
660 .write = traceSMB_proc_write,
661 };
662
663 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
664 {
665 seq_printf(m, "%d\n", multiuser_mount);
666 return 0;
667 }
668
669 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
670 {
671 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
672 }
673
674 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
675 const char __user *buffer, size_t count, loff_t *ppos)
676 {
677 char c;
678 int rc;
679 static bool warned;
680
681 rc = get_user(c, buffer);
682 if (rc)
683 return rc;
684 if (c == '0' || c == 'n' || c == 'N')
685 multiuser_mount = 0;
686 else if (c == '1' || c == 'y' || c == 'Y') {
687 multiuser_mount = 1;
688 if (!warned) {
689 warned = true;
690 printk(KERN_WARNING "CIFS VFS: The legacy multiuser "
691 "mount code is scheduled to be deprecated in "
692 "3.5. Please switch to using the multiuser "
693 "mount option.");
694 }
695 }
696
697 return count;
698 }
699
700 static const struct file_operations cifs_multiuser_mount_proc_fops = {
701 .owner = THIS_MODULE,
702 .open = cifs_multiuser_mount_proc_open,
703 .read = seq_read,
704 .llseek = seq_lseek,
705 .release = single_release,
706 .write = cifs_multiuser_mount_proc_write,
707 };
708
709 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
710 {
711 seq_printf(m, "0x%x\n", global_secflags);
712 return 0;
713 }
714
715 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
716 {
717 return single_open(file, cifs_security_flags_proc_show, NULL);
718 }
719
720 static ssize_t cifs_security_flags_proc_write(struct file *file,
721 const char __user *buffer, size_t count, loff_t *ppos)
722 {
723 unsigned int flags;
724 char flags_string[12];
725 char c;
726
727 if ((count < 1) || (count > 11))
728 return -EINVAL;
729
730 memset(flags_string, 0, 12);
731
732 if (copy_from_user(flags_string, buffer, count))
733 return -EFAULT;
734
735 if (count < 3) {
736 /* single char or single char followed by null */
737 c = flags_string[0];
738 if (c == '0' || c == 'n' || c == 'N') {
739 global_secflags = CIFSSEC_DEF; /* default */
740 return count;
741 } else if (c == '1' || c == 'y' || c == 'Y') {
742 global_secflags = CIFSSEC_MAX;
743 return count;
744 } else if (!isdigit(c)) {
745 cERROR(1, "invalid flag %c", c);
746 return -EINVAL;
747 }
748 }
749 /* else we have a number */
750
751 flags = simple_strtoul(flags_string, NULL, 0);
752
753 cFYI(1, "sec flags 0x%x", flags);
754
755 if (flags <= 0) {
756 cERROR(1, "invalid security flags %s", flags_string);
757 return -EINVAL;
758 }
759
760 if (flags & ~CIFSSEC_MASK) {
761 cERROR(1, "attempt to set unsupported security flags 0x%x",
762 flags & ~CIFSSEC_MASK);
763 return -EINVAL;
764 }
765 /* flags look ok - update the global security flags for cifs module */
766 global_secflags = flags;
767 if (global_secflags & CIFSSEC_MUST_SIGN) {
768 /* requiring signing implies signing is allowed */
769 global_secflags |= CIFSSEC_MAY_SIGN;
770 cFYI(1, "packet signing now required");
771 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
772 cFYI(1, "packet signing disabled");
773 }
774 /* BB should we turn on MAY flags for other MUST options? */
775 return count;
776 }
777
778 static const struct file_operations cifs_security_flags_proc_fops = {
779 .owner = THIS_MODULE,
780 .open = cifs_security_flags_proc_open,
781 .read = seq_read,
782 .llseek = seq_lseek,
783 .release = single_release,
784 .write = cifs_security_flags_proc_write,
785 };
786 #else
787 inline void cifs_proc_init(void)
788 {
789 }
790
791 inline void cifs_proc_clean(void)
792 {
793 }
794 #endif /* PROC_FS */