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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(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 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
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 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
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 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
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 */