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Linux 2.6.35-rc2
[linux/fpc-iii.git] / fs / cifs / cifs_debug.c
blob4fce6e61b34e9e889fae5fdbfbf938a7526b8ccb
1 /*
2 * fs/cifs_debug.c
3 *
4 * Copyright (C) International Business Machines Corp., 2000,2005
5 *
6 * Modified by Steve French (sfrench@us.ibm.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22 #include <linux/fs.h>
23 #include <linux/string.h>
24 #include <linux/ctype.h>
25 #include <linux/module.h>
26 #include <linux/proc_fs.h>
27 #include <asm/uaccess.h>
28 #include "cifspdu.h"
29 #include "cifsglob.h"
30 #include "cifsproto.h"
31 #include "cifs_debug.h"
32 #include "cifsfs.h"
33
34 void
35 cifs_dump_mem(char *label, void *data, int length)
36 {
37 int i, j;
38 int *intptr = data;
39 char *charptr = data;
40 char buf[10], line[80];
41
42 printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
43 label, length, data);
44 for (i = 0; i < length; i += 16) {
45 line[0] = 0;
46 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
47 sprintf(buf, " %08x", intptr[i / 4 + j]);
48 strcat(line, buf);
49 }
50 buf[0] = ' ';
51 buf[2] = 0;
52 for (j = 0; (j < 16) && (i + j < length); j++) {
53 buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
54 strcat(line, buf);
55 }
56 printk(KERN_DEBUG "%s\n", line);
57 }
58 }
59
60 #ifdef CONFIG_CIFS_DEBUG2
61 void cifs_dump_detail(struct smb_hdr *smb)
62 {
63 cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
64 smb->Command, smb->Status.CifsError,
65 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
66 cERROR(1, "smb buf %p len %d", smb, smbCalcSize_LE(smb));
67 }
68
69
70 void cifs_dump_mids(struct TCP_Server_Info *server)
71 {
72 struct list_head *tmp;
73 struct mid_q_entry *mid_entry;
74
75 if (server == NULL)
76 return;
77
78 cERROR(1, "Dump pending requests:");
79 spin_lock(&GlobalMid_Lock);
80 list_for_each(tmp, &server->pending_mid_q) {
81 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
82 cERROR(1, "State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
83 mid_entry->midState,
84 (int)mid_entry->command,
85 mid_entry->pid,
86 mid_entry->tsk,
87 mid_entry->mid);
88 #ifdef CONFIG_CIFS_STATS2
89 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
90 mid_entry->largeBuf,
91 mid_entry->resp_buf,
92 mid_entry->when_received,
93 jiffies);
94 #endif /* STATS2 */
95 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
96 mid_entry->multiEnd);
97 if (mid_entry->resp_buf) {
98 cifs_dump_detail(mid_entry->resp_buf);
99 cifs_dump_mem("existing buf: ",
100 mid_entry->resp_buf, 62);
101 }
102 }
103 spin_unlock(&GlobalMid_Lock);
104 }
105 #endif /* CONFIG_CIFS_DEBUG2 */
106
107 #ifdef CONFIG_PROC_FS
108 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
109 {
110 struct list_head *tmp1, *tmp2, *tmp3;
111 struct mid_q_entry *mid_entry;
112 struct TCP_Server_Info *server;
113 struct cifsSesInfo *ses;
114 struct cifsTconInfo *tcon;
115 int i, j;
116 __u32 dev_type;
117
118 seq_puts(m,
119 "Display Internal CIFS Data Structures for Debugging\n"
120 "---------------------------------------------------\n");
121 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
122 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
123 seq_printf(m, "Servers:");
124
125 i = 0;
126 read_lock(&cifs_tcp_ses_lock);
127 list_for_each(tmp1, &cifs_tcp_ses_list) {
128 server = list_entry(tmp1, struct TCP_Server_Info,
129 tcp_ses_list);
130 i++;
131 list_for_each(tmp2, &server->smb_ses_list) {
132 ses = list_entry(tmp2, struct cifsSesInfo,
133 smb_ses_list);
134 if ((ses->serverDomain == NULL) ||
135 (ses->serverOS == NULL) ||
136 (ses->serverNOS == NULL)) {
137 seq_printf(m, "\n%d) entry for %s not fully "
138 "displayed\n\t", i, ses->serverName);
139 } else {
140 seq_printf(m,
141 "\n%d) Name: %s Domain: %s Uses: %d OS:"
142 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
143 " session status: %d\t",
144 i, ses->serverName, ses->serverDomain,
145 ses->ses_count, ses->serverOS, ses->serverNOS,
146 ses->capabilities, ses->status);
147 }
148 seq_printf(m, "TCP status: %d\n\tLocal Users To "
149 "Server: %d SecMode: 0x%x Req On Wire: %d",
150 server->tcpStatus, server->srv_count,
151 server->secMode,
152 atomic_read(&server->inFlight));
153
154 #ifdef CONFIG_CIFS_STATS2
155 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
156 atomic_read(&server->inSend),
157 atomic_read(&server->num_waiters));
158 #endif
159
160 seq_puts(m, "\n\tShares:");
161 j = 0;
162 list_for_each(tmp3, &ses->tcon_list) {
163 tcon = list_entry(tmp3, struct cifsTconInfo,
164 tcon_list);
165 ++j;
166 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
167 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
168 tcon->treeName, tcon->tc_count);
169 if (tcon->nativeFileSystem) {
170 seq_printf(m, "Type: %s ",
171 tcon->nativeFileSystem);
172 }
173 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
174 "\nPathComponentMax: %d Status: 0x%d",
175 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
176 le32_to_cpu(tcon->fsAttrInfo.Attributes),
177 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
178 tcon->tidStatus);
179 if (dev_type == FILE_DEVICE_DISK)
180 seq_puts(m, " type: DISK ");
181 else if (dev_type == FILE_DEVICE_CD_ROM)
182 seq_puts(m, " type: CDROM ");
183 else
184 seq_printf(m, " type: %d ", dev_type);
185
186 if (tcon->need_reconnect)
187 seq_puts(m, "\tDISCONNECTED ");
188 seq_putc(m, '\n');
189 }
190
191 seq_puts(m, "\n\tMIDs:\n");
192
193 spin_lock(&GlobalMid_Lock);
194 list_for_each(tmp3, &server->pending_mid_q) {
195 mid_entry = list_entry(tmp3, struct mid_q_entry,
196 qhead);
197 seq_printf(m, "\tState: %d com: %d pid:"
198 " %d tsk: %p mid %d\n",
199 mid_entry->midState,
200 (int)mid_entry->command,
201 mid_entry->pid,
202 mid_entry->tsk,
203 mid_entry->mid);
204 }
205 spin_unlock(&GlobalMid_Lock);
206 }
207 }
208 read_unlock(&cifs_tcp_ses_lock);
209 seq_putc(m, '\n');
210
211 /* BB add code to dump additional info such as TCP session info now */
212 return 0;
213 }
214
215 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
216 {
217 return single_open(file, cifs_debug_data_proc_show, NULL);
218 }
219
220 static const struct file_operations cifs_debug_data_proc_fops = {
221 .owner = THIS_MODULE,
222 .open = cifs_debug_data_proc_open,
223 .read = seq_read,
224 .llseek = seq_lseek,
225 .release = single_release,
226 };
227
228 #ifdef CONFIG_CIFS_STATS
229 static ssize_t cifs_stats_proc_write(struct file *file,
230 const char __user *buffer, size_t count, loff_t *ppos)
231 {
232 char c;
233 int rc;
234 struct list_head *tmp1, *tmp2, *tmp3;
235 struct TCP_Server_Info *server;
236 struct cifsSesInfo *ses;
237 struct cifsTconInfo *tcon;
238
239 rc = get_user(c, buffer);
240 if (rc)
241 return rc;
242
243 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
244 #ifdef CONFIG_CIFS_STATS2
245 atomic_set(&totBufAllocCount, 0);
246 atomic_set(&totSmBufAllocCount, 0);
247 #endif /* CONFIG_CIFS_STATS2 */
248 read_lock(&cifs_tcp_ses_lock);
249 list_for_each(tmp1, &cifs_tcp_ses_list) {
250 server = list_entry(tmp1, struct TCP_Server_Info,
251 tcp_ses_list);
252 list_for_each(tmp2, &server->smb_ses_list) {
253 ses = list_entry(tmp2, struct cifsSesInfo,
254 smb_ses_list);
255 list_for_each(tmp3, &ses->tcon_list) {
256 tcon = list_entry(tmp3,
257 struct cifsTconInfo,
258 tcon_list);
259 atomic_set(&tcon->num_smbs_sent, 0);
260 atomic_set(&tcon->num_writes, 0);
261 atomic_set(&tcon->num_reads, 0);
262 atomic_set(&tcon->num_oplock_brks, 0);
263 atomic_set(&tcon->num_opens, 0);
264 atomic_set(&tcon->num_posixopens, 0);
265 atomic_set(&tcon->num_posixmkdirs, 0);
266 atomic_set(&tcon->num_closes, 0);
267 atomic_set(&tcon->num_deletes, 0);
268 atomic_set(&tcon->num_mkdirs, 0);
269 atomic_set(&tcon->num_rmdirs, 0);
270 atomic_set(&tcon->num_renames, 0);
271 atomic_set(&tcon->num_t2renames, 0);
272 atomic_set(&tcon->num_ffirst, 0);
273 atomic_set(&tcon->num_fnext, 0);
274 atomic_set(&tcon->num_fclose, 0);
275 atomic_set(&tcon->num_hardlinks, 0);
276 atomic_set(&tcon->num_symlinks, 0);
277 atomic_set(&tcon->num_locks, 0);
278 }
279 }
280 }
281 read_unlock(&cifs_tcp_ses_lock);
282 }
283
284 return count;
285 }
286
287 static int cifs_stats_proc_show(struct seq_file *m, void *v)
288 {
289 int i;
290 struct list_head *tmp1, *tmp2, *tmp3;
291 struct TCP_Server_Info *server;
292 struct cifsSesInfo *ses;
293 struct cifsTconInfo *tcon;
294
295 seq_printf(m,
296 "Resources in use\nCIFS Session: %d\n",
297 sesInfoAllocCount.counter);
298 seq_printf(m, "Share (unique mount targets): %d\n",
299 tconInfoAllocCount.counter);
300 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
301 bufAllocCount.counter,
302 cifs_min_rcv + tcpSesAllocCount.counter);
303 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
304 smBufAllocCount.counter, cifs_min_small);
305 #ifdef CONFIG_CIFS_STATS2
306 seq_printf(m, "Total Large %d Small %d Allocations\n",
307 atomic_read(&totBufAllocCount),
308 atomic_read(&totSmBufAllocCount));
309 #endif /* CONFIG_CIFS_STATS2 */
310
311 seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
312 seq_printf(m,
313 "\n%d session %d share reconnects\n",
314 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
315
316 seq_printf(m,
317 "Total vfs operations: %d maximum at one time: %d\n",
318 GlobalCurrentXid, GlobalMaxActiveXid);
319
320 i = 0;
321 read_lock(&cifs_tcp_ses_lock);
322 list_for_each(tmp1, &cifs_tcp_ses_list) {
323 server = list_entry(tmp1, struct TCP_Server_Info,
324 tcp_ses_list);
325 list_for_each(tmp2, &server->smb_ses_list) {
326 ses = list_entry(tmp2, struct cifsSesInfo,
327 smb_ses_list);
328 list_for_each(tmp3, &ses->tcon_list) {
329 tcon = list_entry(tmp3,
330 struct cifsTconInfo,
331 tcon_list);
332 i++;
333 seq_printf(m, "\n%d) %s", i, tcon->treeName);
334 if (tcon->need_reconnect)
335 seq_puts(m, "\tDISCONNECTED ");
336 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
337 atomic_read(&tcon->num_smbs_sent),
338 atomic_read(&tcon->num_oplock_brks));
339 seq_printf(m, "\nReads: %d Bytes: %lld",
340 atomic_read(&tcon->num_reads),
341 (long long)(tcon->bytes_read));
342 seq_printf(m, "\nWrites: %d Bytes: %lld",
343 atomic_read(&tcon->num_writes),
344 (long long)(tcon->bytes_written));
345 seq_printf(m, "\nFlushes: %d",
346 atomic_read(&tcon->num_flushes));
347 seq_printf(m, "\nLocks: %d HardLinks: %d "
348 "Symlinks: %d",
349 atomic_read(&tcon->num_locks),
350 atomic_read(&tcon->num_hardlinks),
351 atomic_read(&tcon->num_symlinks));
352 seq_printf(m, "\nOpens: %d Closes: %d "
353 "Deletes: %d",
354 atomic_read(&tcon->num_opens),
355 atomic_read(&tcon->num_closes),
356 atomic_read(&tcon->num_deletes));
357 seq_printf(m, "\nPosix Opens: %d "
358 "Posix Mkdirs: %d",
359 atomic_read(&tcon->num_posixopens),
360 atomic_read(&tcon->num_posixmkdirs));
361 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
362 atomic_read(&tcon->num_mkdirs),
363 atomic_read(&tcon->num_rmdirs));
364 seq_printf(m, "\nRenames: %d T2 Renames %d",
365 atomic_read(&tcon->num_renames),
366 atomic_read(&tcon->num_t2renames));
367 seq_printf(m, "\nFindFirst: %d FNext %d "
368 "FClose %d",
369 atomic_read(&tcon->num_ffirst),
370 atomic_read(&tcon->num_fnext),
371 atomic_read(&tcon->num_fclose));
372 }
373 }
374 }
375 read_unlock(&cifs_tcp_ses_lock);
376
377 seq_putc(m, '\n');
378 return 0;
379 }
380
381 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
382 {
383 return single_open(file, cifs_stats_proc_show, NULL);
384 }
385
386 static const struct file_operations cifs_stats_proc_fops = {
387 .owner = THIS_MODULE,
388 .open = cifs_stats_proc_open,
389 .read = seq_read,
390 .llseek = seq_lseek,
391 .release = single_release,
392 .write = cifs_stats_proc_write,
393 };
394 #endif /* STATS */
395
396 static struct proc_dir_entry *proc_fs_cifs;
397 static const struct file_operations cifsFYI_proc_fops;
398 static const struct file_operations cifs_oplock_proc_fops;
399 static const struct file_operations cifs_lookup_cache_proc_fops;
400 static const struct file_operations traceSMB_proc_fops;
401 static const struct file_operations cifs_multiuser_mount_proc_fops;
402 static const struct file_operations cifs_security_flags_proc_fops;
403 static const struct file_operations cifs_experimental_proc_fops;
404 static const struct file_operations cifs_linux_ext_proc_fops;
405
406 void
407 cifs_proc_init(void)
408 {
409 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
410 if (proc_fs_cifs == NULL)
411 return;
412
413 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
414
415 #ifdef CONFIG_CIFS_STATS
416 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
417 #endif /* STATS */
418 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
419 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
420 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
421 proc_create("Experimental", 0, proc_fs_cifs,
422 &cifs_experimental_proc_fops);
423 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
424 &cifs_linux_ext_proc_fops);
425 proc_create("MultiuserMount", 0, proc_fs_cifs,
426 &cifs_multiuser_mount_proc_fops);
427 proc_create("SecurityFlags", 0, proc_fs_cifs,
428 &cifs_security_flags_proc_fops);
429 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
430 &cifs_lookup_cache_proc_fops);
431 }
432
433 void
434 cifs_proc_clean(void)
435 {
436 if (proc_fs_cifs == NULL)
437 return;
438
439 remove_proc_entry("DebugData", proc_fs_cifs);
440 remove_proc_entry("cifsFYI", proc_fs_cifs);
441 remove_proc_entry("traceSMB", proc_fs_cifs);
442 #ifdef CONFIG_CIFS_STATS
443 remove_proc_entry("Stats", proc_fs_cifs);
444 #endif
445 remove_proc_entry("MultiuserMount", proc_fs_cifs);
446 remove_proc_entry("OplockEnabled", proc_fs_cifs);
447 remove_proc_entry("SecurityFlags", proc_fs_cifs);
448 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
449 remove_proc_entry("Experimental", proc_fs_cifs);
450 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
451 remove_proc_entry("fs/cifs", NULL);
452 }
453
454 static int cifsFYI_proc_show(struct seq_file *m, void *v)
455 {
456 seq_printf(m, "%d\n", cifsFYI);
457 return 0;
458 }
459
460 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
461 {
462 return single_open(file, cifsFYI_proc_show, NULL);
463 }
464
465 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
466 size_t count, loff_t *ppos)
467 {
468 char c;
469 int rc;
470
471 rc = get_user(c, buffer);
472 if (rc)
473 return rc;
474 if (c == '0' || c == 'n' || c == 'N')
475 cifsFYI = 0;
476 else if (c == '1' || c == 'y' || c == 'Y')
477 cifsFYI = 1;
478 else if ((c > '1') && (c <= '9'))
479 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
480
481 return count;
482 }
483
484 static const struct file_operations cifsFYI_proc_fops = {
485 .owner = THIS_MODULE,
486 .open = cifsFYI_proc_open,
487 .read = seq_read,
488 .llseek = seq_lseek,
489 .release = single_release,
490 .write = cifsFYI_proc_write,
491 };
492
493 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
494 {
495 seq_printf(m, "%d\n", oplockEnabled);
496 return 0;
497 }
498
499 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
500 {
501 return single_open(file, cifs_oplock_proc_show, NULL);
502 }
503
504 static ssize_t cifs_oplock_proc_write(struct file *file,
505 const char __user *buffer, size_t count, loff_t *ppos)
506 {
507 char c;
508 int rc;
509
510 rc = get_user(c, buffer);
511 if (rc)
512 return rc;
513 if (c == '0' || c == 'n' || c == 'N')
514 oplockEnabled = 0;
515 else if (c == '1' || c == 'y' || c == 'Y')
516 oplockEnabled = 1;
517
518 return count;
519 }
520
521 static const struct file_operations cifs_oplock_proc_fops = {
522 .owner = THIS_MODULE,
523 .open = cifs_oplock_proc_open,
524 .read = seq_read,
525 .llseek = seq_lseek,
526 .release = single_release,
527 .write = cifs_oplock_proc_write,
528 };
529
530 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
531 {
532 seq_printf(m, "%d\n", experimEnabled);
533 return 0;
534 }
535
536 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
537 {
538 return single_open(file, cifs_experimental_proc_show, NULL);
539 }
540
541 static ssize_t cifs_experimental_proc_write(struct file *file,
542 const char __user *buffer, size_t count, loff_t *ppos)
543 {
544 char c;
545 int rc;
546
547 rc = get_user(c, buffer);
548 if (rc)
549 return rc;
550 if (c == '0' || c == 'n' || c == 'N')
551 experimEnabled = 0;
552 else if (c == '1' || c == 'y' || c == 'Y')
553 experimEnabled = 1;
554 else if (c == '2')
555 experimEnabled = 2;
556
557 return count;
558 }
559
560 static const struct file_operations cifs_experimental_proc_fops = {
561 .owner = THIS_MODULE,
562 .open = cifs_experimental_proc_open,
563 .read = seq_read,
564 .llseek = seq_lseek,
565 .release = single_release,
566 .write = cifs_experimental_proc_write,
567 };
568
569 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
570 {
571 seq_printf(m, "%d\n", linuxExtEnabled);
572 return 0;
573 }
574
575 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
576 {
577 return single_open(file, cifs_linux_ext_proc_show, NULL);
578 }
579
580 static ssize_t cifs_linux_ext_proc_write(struct file *file,
581 const char __user *buffer, size_t count, loff_t *ppos)
582 {
583 char c;
584 int rc;
585
586 rc = get_user(c, buffer);
587 if (rc)
588 return rc;
589 if (c == '0' || c == 'n' || c == 'N')
590 linuxExtEnabled = 0;
591 else if (c == '1' || c == 'y' || c == 'Y')
592 linuxExtEnabled = 1;
593
594 return count;
595 }
596
597 static const struct file_operations cifs_linux_ext_proc_fops = {
598 .owner = THIS_MODULE,
599 .open = cifs_linux_ext_proc_open,
600 .read = seq_read,
601 .llseek = seq_lseek,
602 .release = single_release,
603 .write = cifs_linux_ext_proc_write,
604 };
605
606 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
607 {
608 seq_printf(m, "%d\n", lookupCacheEnabled);
609 return 0;
610 }
611
612 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
613 {
614 return single_open(file, cifs_lookup_cache_proc_show, NULL);
615 }
616
617 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
618 const char __user *buffer, size_t count, loff_t *ppos)
619 {
620 char c;
621 int rc;
622
623 rc = get_user(c, buffer);
624 if (rc)
625 return rc;
626 if (c == '0' || c == 'n' || c == 'N')
627 lookupCacheEnabled = 0;
628 else if (c == '1' || c == 'y' || c == 'Y')
629 lookupCacheEnabled = 1;
630
631 return count;
632 }
633
634 static const struct file_operations cifs_lookup_cache_proc_fops = {
635 .owner = THIS_MODULE,
636 .open = cifs_lookup_cache_proc_open,
637 .read = seq_read,
638 .llseek = seq_lseek,
639 .release = single_release,
640 .write = cifs_lookup_cache_proc_write,
641 };
642
643 static int traceSMB_proc_show(struct seq_file *m, void *v)
644 {
645 seq_printf(m, "%d\n", traceSMB);
646 return 0;
647 }
648
649 static int traceSMB_proc_open(struct inode *inode, struct file *file)
650 {
651 return single_open(file, traceSMB_proc_show, NULL);
652 }
653
654 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
655 size_t count, loff_t *ppos)
656 {
657 char c;
658 int rc;
659
660 rc = get_user(c, buffer);
661 if (rc)
662 return rc;
663 if (c == '0' || c == 'n' || c == 'N')
664 traceSMB = 0;
665 else if (c == '1' || c == 'y' || c == 'Y')
666 traceSMB = 1;
667
668 return count;
669 }
670
671 static const struct file_operations traceSMB_proc_fops = {
672 .owner = THIS_MODULE,
673 .open = traceSMB_proc_open,
674 .read = seq_read,
675 .llseek = seq_lseek,
676 .release = single_release,
677 .write = traceSMB_proc_write,
678 };
679
680 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
681 {
682 seq_printf(m, "%d\n", multiuser_mount);
683 return 0;
684 }
685
686 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
687 {
688 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
689 }
690
691 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
692 const char __user *buffer, size_t count, loff_t *ppos)
693 {
694 char c;
695 int rc;
696
697 rc = get_user(c, buffer);
698 if (rc)
699 return rc;
700 if (c == '0' || c == 'n' || c == 'N')
701 multiuser_mount = 0;
702 else if (c == '1' || c == 'y' || c == 'Y')
703 multiuser_mount = 1;
704
705 return count;
706 }
707
708 static const struct file_operations cifs_multiuser_mount_proc_fops = {
709 .owner = THIS_MODULE,
710 .open = cifs_multiuser_mount_proc_open,
711 .read = seq_read,
712 .llseek = seq_lseek,
713 .release = single_release,
714 .write = cifs_multiuser_mount_proc_write,
715 };
716
717 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
718 {
719 seq_printf(m, "0x%x\n", global_secflags);
720 return 0;
721 }
722
723 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
724 {
725 return single_open(file, cifs_security_flags_proc_show, NULL);
726 }
727
728 static ssize_t cifs_security_flags_proc_write(struct file *file,
729 const char __user *buffer, size_t count, loff_t *ppos)
730 {
731 unsigned int flags;
732 char flags_string[12];
733 char c;
734
735 if ((count < 1) || (count > 11))
736 return -EINVAL;
737
738 memset(flags_string, 0, 12);
739
740 if (copy_from_user(flags_string, buffer, count))
741 return -EFAULT;
742
743 if (count < 3) {
744 /* single char or single char followed by null */
745 c = flags_string[0];
746 if (c == '0' || c == 'n' || c == 'N') {
747 global_secflags = CIFSSEC_DEF; /* default */
748 return count;
749 } else if (c == '1' || c == 'y' || c == 'Y') {
750 global_secflags = CIFSSEC_MAX;
751 return count;
752 } else if (!isdigit(c)) {
753 cERROR(1, "invalid flag %c", c);
754 return -EINVAL;
755 }
756 }
757 /* else we have a number */
758
759 flags = simple_strtoul(flags_string, NULL, 0);
760
761 cFYI(1, "sec flags 0x%x", flags);
762
763 if (flags <= 0) {
764 cERROR(1, "invalid security flags %s", flags_string);
765 return -EINVAL;
766 }
767
768 if (flags & ~CIFSSEC_MASK) {
769 cERROR(1, "attempt to set unsupported security flags 0x%x",
770 flags & ~CIFSSEC_MASK);
771 return -EINVAL;
772 }
773 /* flags look ok - update the global security flags for cifs module */
774 global_secflags = flags;
775 if (global_secflags & CIFSSEC_MUST_SIGN) {
776 /* requiring signing implies signing is allowed */
777 global_secflags |= CIFSSEC_MAY_SIGN;
778 cFYI(1, "packet signing now required");
779 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
780 cFYI(1, "packet signing disabled");
781 }
782 /* BB should we turn on MAY flags for other MUST options? */
783 return count;
784 }
785
786 static const struct file_operations cifs_security_flags_proc_fops = {
787 .owner = THIS_MODULE,
788 .open = cifs_security_flags_proc_open,
789 .read = seq_read,
790 .llseek = seq_lseek,
791 .release = single_release,
792 .write = cifs_security_flags_proc_write,
793 };
794 #else
795 inline void cifs_proc_init(void)
796 {
797 }
798
799 inline void cifs_proc_clean(void)
800 {
801 }
802 #endif /* PROC_FS */
Linux with added FPC-III support