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ACPI: Make Len Brown the ACPI maintainer again
[linux-2.6/next.git] / fs / cifs / cifs_debug.c
blob69a12aae91d313e832ae3e2002d3bdfc7732ecc6
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 *tmp;
111 struct list_head *tmp1;
112 struct mid_q_entry *mid_entry;
113 struct cifsSesInfo *ses;
114 struct cifsTconInfo *tcon;
115 int i;
116
117 seq_puts(m,
118 "Display Internal CIFS Data Structures for Debugging\n"
119 "---------------------------------------------------\n");
120 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
121 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
122 seq_printf(m, "Servers:");
123
124 i = 0;
125 read_lock(&GlobalSMBSeslock);
126 list_for_each(tmp, &GlobalSMBSessionList) {
127 i++;
128 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
129 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
130 (ses->serverNOS == NULL)) {
131 seq_printf(m, "\nentry for %s not fully "
132 "displayed\n\t", ses->serverName);
133 } else {
134 seq_printf(m,
135 "\n%d) Name: %s Domain: %s Mounts: %d OS:"
136 " %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
137 " session status: %d\t",
138 i, ses->serverName, ses->serverDomain,
139 atomic_read(&ses->inUse),
140 ses->serverOS, ses->serverNOS,
141 ses->capabilities, ses->status);
142 }
143 if (ses->server) {
144 seq_printf(m, "TCP status: %d\n\tLocal Users To "
145 "Server: %d SecMode: 0x%x Req On Wire: %d",
146 ses->server->tcpStatus,
147 atomic_read(&ses->server->socketUseCount),
148 ses->server->secMode,
149 atomic_read(&ses->server->inFlight));
150
151 #ifdef CONFIG_CIFS_STATS2
152 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
153 atomic_read(&ses->server->inSend),
154 atomic_read(&ses->server->num_waiters));
155 #endif
156
157 seq_puts(m, "\nMIDs:\n");
158
159 spin_lock(&GlobalMid_Lock);
160 list_for_each(tmp1, &ses->server->pending_mid_q) {
161 mid_entry = list_entry(tmp1, struct
162 mid_q_entry,
163 qhead);
164 seq_printf(m, "State: %d com: %d pid:"
165 " %d tsk: %p mid %d\n",
166 mid_entry->midState,
167 (int)mid_entry->command,
168 mid_entry->pid,
169 mid_entry->tsk,
170 mid_entry->mid);
171 }
172 spin_unlock(&GlobalMid_Lock);
173 }
174
175 }
176 read_unlock(&GlobalSMBSeslock);
177 seq_putc(m, '\n');
178
179 seq_puts(m, "Shares:");
180
181 i = 0;
182 read_lock(&GlobalSMBSeslock);
183 list_for_each(tmp, &GlobalTreeConnectionList) {
184 __u32 dev_type;
185 i++;
186 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
187 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
188 seq_printf(m, "\n%d) %s Uses: %d ", i,
189 tcon->treeName, atomic_read(&tcon->useCount));
190 if (tcon->nativeFileSystem) {
191 seq_printf(m, "Type: %s ",
192 tcon->nativeFileSystem);
193 }
194 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
195 "\nPathComponentMax: %d Status: %d",
196 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
197 le32_to_cpu(tcon->fsAttrInfo.Attributes),
198 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
199 tcon->tidStatus);
200 if (dev_type == FILE_DEVICE_DISK)
201 seq_puts(m, " type: DISK ");
202 else if (dev_type == FILE_DEVICE_CD_ROM)
203 seq_puts(m, " type: CDROM ");
204 else
205 seq_printf(m, " type: %d ", dev_type);
206
207 if (tcon->tidStatus == CifsNeedReconnect)
208 seq_puts(m, "\tDISCONNECTED ");
209 }
210 read_unlock(&GlobalSMBSeslock);
211
212 seq_putc(m, '\n');
213
214 /* BB add code to dump additional info such as TCP session info now */
215 return 0;
216 }
217
218 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
219 {
220 return single_open(file, cifs_debug_data_proc_show, NULL);
221 }
222
223 static const struct file_operations cifs_debug_data_proc_fops = {
224 .owner = THIS_MODULE,
225 .open = cifs_debug_data_proc_open,
226 .read = seq_read,
227 .llseek = seq_lseek,
228 .release = single_release,
229 };
230
231 #ifdef CONFIG_CIFS_STATS
232 static ssize_t cifs_stats_proc_write(struct file *file,
233 const char __user *buffer, size_t count, loff_t *ppos)
234 {
235 char c;
236 int rc;
237 struct list_head *tmp;
238 struct cifsTconInfo *tcon;
239
240 rc = get_user(c, buffer);
241 if (rc)
242 return rc;
243
244 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
245 read_lock(&GlobalSMBSeslock);
246 #ifdef CONFIG_CIFS_STATS2
247 atomic_set(&totBufAllocCount, 0);
248 atomic_set(&totSmBufAllocCount, 0);
249 #endif /* CONFIG_CIFS_STATS2 */
250 list_for_each(tmp, &GlobalTreeConnectionList) {
251 tcon = list_entry(tmp, struct cifsTconInfo,
252 cifsConnectionList);
253 atomic_set(&tcon->num_smbs_sent, 0);
254 atomic_set(&tcon->num_writes, 0);
255 atomic_set(&tcon->num_reads, 0);
256 atomic_set(&tcon->num_oplock_brks, 0);
257 atomic_set(&tcon->num_opens, 0);
258 atomic_set(&tcon->num_closes, 0);
259 atomic_set(&tcon->num_deletes, 0);
260 atomic_set(&tcon->num_mkdirs, 0);
261 atomic_set(&tcon->num_rmdirs, 0);
262 atomic_set(&tcon->num_renames, 0);
263 atomic_set(&tcon->num_t2renames, 0);
264 atomic_set(&tcon->num_ffirst, 0);
265 atomic_set(&tcon->num_fnext, 0);
266 atomic_set(&tcon->num_fclose, 0);
267 atomic_set(&tcon->num_hardlinks, 0);
268 atomic_set(&tcon->num_symlinks, 0);
269 atomic_set(&tcon->num_locks, 0);
270 }
271 read_unlock(&GlobalSMBSeslock);
272 }
273
274 return count;
275 }
276
277 static int cifs_stats_proc_show(struct seq_file *m, void *v)
278 {
279 int i;
280 struct list_head *tmp;
281 struct cifsTconInfo *tcon;
282
283 seq_printf(m,
284 "Resources in use\nCIFS Session: %d\n",
285 sesInfoAllocCount.counter);
286 seq_printf(m, "Share (unique mount targets): %d\n",
287 tconInfoAllocCount.counter);
288 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
289 bufAllocCount.counter,
290 cifs_min_rcv + tcpSesAllocCount.counter);
291 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
292 smBufAllocCount.counter, cifs_min_small);
293 #ifdef CONFIG_CIFS_STATS2
294 seq_printf(m, "Total Large %d Small %d Allocations\n",
295 atomic_read(&totBufAllocCount),
296 atomic_read(&totSmBufAllocCount));
297 #endif /* CONFIG_CIFS_STATS2 */
298
299 seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
300 seq_printf(m,
301 "\n%d session %d share reconnects\n",
302 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
303
304 seq_printf(m,
305 "Total vfs operations: %d maximum at one time: %d\n",
306 GlobalCurrentXid, GlobalMaxActiveXid);
307
308 i = 0;
309 read_lock(&GlobalSMBSeslock);
310 list_for_each(tmp, &GlobalTreeConnectionList) {
311 i++;
312 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
313 seq_printf(m, "\n%d) %s", i, tcon->treeName);
314 if (tcon->tidStatus == CifsNeedReconnect)
315 seq_puts(m, "\tDISCONNECTED ");
316 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
317 atomic_read(&tcon->num_smbs_sent),
318 atomic_read(&tcon->num_oplock_brks));
319 seq_printf(m, "\nReads: %d Bytes: %lld",
320 atomic_read(&tcon->num_reads),
321 (long long)(tcon->bytes_read));
322 seq_printf(m, "\nWrites: %d Bytes: %lld",
323 atomic_read(&tcon->num_writes),
324 (long long)(tcon->bytes_written));
325 seq_printf(m,
326 "\nLocks: %d HardLinks: %d Symlinks: %d",
327 atomic_read(&tcon->num_locks),
328 atomic_read(&tcon->num_hardlinks),
329 atomic_read(&tcon->num_symlinks));
330
331 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
332 atomic_read(&tcon->num_opens),
333 atomic_read(&tcon->num_closes),
334 atomic_read(&tcon->num_deletes));
335 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
336 atomic_read(&tcon->num_mkdirs),
337 atomic_read(&tcon->num_rmdirs));
338 seq_printf(m, "\nRenames: %d T2 Renames %d",
339 atomic_read(&tcon->num_renames),
340 atomic_read(&tcon->num_t2renames));
341 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
342 atomic_read(&tcon->num_ffirst),
343 atomic_read(&tcon->num_fnext),
344 atomic_read(&tcon->num_fclose));
345 }
346 read_unlock(&GlobalSMBSeslock);
347
348 seq_putc(m, '\n');
349 return 0;
350 }
351
352 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
353 {
354 return single_open(file, cifs_stats_proc_show, NULL);
355 }
356
357 static const struct file_operations cifs_stats_proc_fops = {
358 .owner = THIS_MODULE,
359 .open = cifs_stats_proc_open,
360 .read = seq_read,
361 .llseek = seq_lseek,
362 .release = single_release,
363 .write = cifs_stats_proc_write,
364 };
365 #endif /* STATS */
366
367 static struct proc_dir_entry *proc_fs_cifs;
368 static const struct file_operations cifsFYI_proc_fops;
369 static const struct file_operations cifs_oplock_proc_fops;
370 static const struct file_operations cifs_lookup_cache_proc_fops;
371 static const struct file_operations traceSMB_proc_fops;
372 static const struct file_operations cifs_multiuser_mount_proc_fops;
373 static const struct file_operations cifs_security_flags_proc_fops;
374 static const struct file_operations cifs_experimental_proc_fops;
375 static const struct file_operations cifs_linux_ext_proc_fops;
376
377 void
378 cifs_proc_init(void)
379 {
380 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
381 if (proc_fs_cifs == NULL)
382 return;
383
384 proc_fs_cifs->owner = THIS_MODULE;
385 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
386
387 #ifdef CONFIG_CIFS_STATS
388 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
389 #endif /* STATS */
390 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
391 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
392 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
393 proc_create("Experimental", 0, proc_fs_cifs,
394 &cifs_experimental_proc_fops);
395 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
396 &cifs_linux_ext_proc_fops);
397 proc_create("MultiuserMount", 0, proc_fs_cifs,
398 &cifs_multiuser_mount_proc_fops);
399 proc_create("SecurityFlags", 0, proc_fs_cifs,
400 &cifs_security_flags_proc_fops);
401 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
402 &cifs_lookup_cache_proc_fops);
403 }
404
405 void
406 cifs_proc_clean(void)
407 {
408 if (proc_fs_cifs == NULL)
409 return;
410
411 remove_proc_entry("DebugData", proc_fs_cifs);
412 remove_proc_entry("cifsFYI", proc_fs_cifs);
413 remove_proc_entry("traceSMB", proc_fs_cifs);
414 #ifdef CONFIG_CIFS_STATS
415 remove_proc_entry("Stats", proc_fs_cifs);
416 #endif
417 remove_proc_entry("MultiuserMount", proc_fs_cifs);
418 remove_proc_entry("OplockEnabled", proc_fs_cifs);
419 remove_proc_entry("SecurityFlags", proc_fs_cifs);
420 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
421 remove_proc_entry("Experimental", proc_fs_cifs);
422 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
423 remove_proc_entry("fs/cifs", NULL);
424 }
425
426 static int cifsFYI_proc_show(struct seq_file *m, void *v)
427 {
428 seq_printf(m, "%d\n", cifsFYI);
429 return 0;
430 }
431
432 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
433 {
434 return single_open(file, cifsFYI_proc_show, NULL);
435 }
436
437 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
438 size_t count, loff_t *ppos)
439 {
440 char c;
441 int rc;
442
443 rc = get_user(c, buffer);
444 if (rc)
445 return rc;
446 if (c == '0' || c == 'n' || c == 'N')
447 cifsFYI = 0;
448 else if (c == '1' || c == 'y' || c == 'Y')
449 cifsFYI = 1;
450 else if ((c > '1') && (c <= '9'))
451 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
452
453 return count;
454 }
455
456 static const struct file_operations cifsFYI_proc_fops = {
457 .owner = THIS_MODULE,
458 .open = cifsFYI_proc_open,
459 .read = seq_read,
460 .llseek = seq_lseek,
461 .release = single_release,
462 .write = cifsFYI_proc_write,
463 };
464
465 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
466 {
467 seq_printf(m, "%d\n", oplockEnabled);
468 return 0;
469 }
470
471 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
472 {
473 return single_open(file, cifs_oplock_proc_show, NULL);
474 }
475
476 static ssize_t cifs_oplock_proc_write(struct file *file,
477 const char __user *buffer, size_t count, loff_t *ppos)
478 {
479 char c;
480 int rc;
481
482 rc = get_user(c, buffer);
483 if (rc)
484 return rc;
485 if (c == '0' || c == 'n' || c == 'N')
486 oplockEnabled = 0;
487 else if (c == '1' || c == 'y' || c == 'Y')
488 oplockEnabled = 1;
489
490 return count;
491 }
492
493 static const struct file_operations cifs_oplock_proc_fops = {
494 .owner = THIS_MODULE,
495 .open = cifs_oplock_proc_open,
496 .read = seq_read,
497 .llseek = seq_lseek,
498 .release = single_release,
499 .write = cifs_oplock_proc_write,
500 };
501
502 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
503 {
504 seq_printf(m, "%d\n", experimEnabled);
505 return 0;
506 }
507
508 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
509 {
510 return single_open(file, cifs_experimental_proc_show, NULL);
511 }
512
513 static ssize_t cifs_experimental_proc_write(struct file *file,
514 const char __user *buffer, size_t count, loff_t *ppos)
515 {
516 char c;
517 int rc;
518
519 rc = get_user(c, buffer);
520 if (rc)
521 return rc;
522 if (c == '0' || c == 'n' || c == 'N')
523 experimEnabled = 0;
524 else if (c == '1' || c == 'y' || c == 'Y')
525 experimEnabled = 1;
526 else if (c == '2')
527 experimEnabled = 2;
528
529 return count;
530 }
531
532 static const struct file_operations cifs_experimental_proc_fops = {
533 .owner = THIS_MODULE,
534 .open = cifs_experimental_proc_open,
535 .read = seq_read,
536 .llseek = seq_lseek,
537 .release = single_release,
538 .write = cifs_experimental_proc_write,
539 };
540
541 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
542 {
543 seq_printf(m, "%d\n", linuxExtEnabled);
544 return 0;
545 }
546
547 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
548 {
549 return single_open(file, cifs_linux_ext_proc_show, NULL);
550 }
551
552 static ssize_t cifs_linux_ext_proc_write(struct file *file,
553 const char __user *buffer, size_t count, loff_t *ppos)
554 {
555 char c;
556 int rc;
557
558 rc = get_user(c, buffer);
559 if (rc)
560 return rc;
561 if (c == '0' || c == 'n' || c == 'N')
562 linuxExtEnabled = 0;
563 else if (c == '1' || c == 'y' || c == 'Y')
564 linuxExtEnabled = 1;
565
566 return count;
567 }
568
569 static const struct file_operations cifs_linux_ext_proc_fops = {
570 .owner = THIS_MODULE,
571 .open = cifs_linux_ext_proc_open,
572 .read = seq_read,
573 .llseek = seq_lseek,
574 .release = single_release,
575 .write = cifs_linux_ext_proc_write,
576 };
577
578 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
579 {
580 seq_printf(m, "%d\n", lookupCacheEnabled);
581 return 0;
582 }
583
584 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
585 {
586 return single_open(file, cifs_lookup_cache_proc_show, NULL);
587 }
588
589 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
590 const char __user *buffer, size_t count, loff_t *ppos)
591 {
592 char c;
593 int rc;
594
595 rc = get_user(c, buffer);
596 if (rc)
597 return rc;
598 if (c == '0' || c == 'n' || c == 'N')
599 lookupCacheEnabled = 0;
600 else if (c == '1' || c == 'y' || c == 'Y')
601 lookupCacheEnabled = 1;
602
603 return count;
604 }
605
606 static const struct file_operations cifs_lookup_cache_proc_fops = {
607 .owner = THIS_MODULE,
608 .open = cifs_lookup_cache_proc_open,
609 .read = seq_read,
610 .llseek = seq_lseek,
611 .release = single_release,
612 .write = cifs_lookup_cache_proc_write,
613 };
614
615 static int traceSMB_proc_show(struct seq_file *m, void *v)
616 {
617 seq_printf(m, "%d\n", traceSMB);
618 return 0;
619 }
620
621 static int traceSMB_proc_open(struct inode *inode, struct file *file)
622 {
623 return single_open(file, traceSMB_proc_show, NULL);
624 }
625
626 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
627 size_t count, loff_t *ppos)
628 {
629 char c;
630 int rc;
631
632 rc = get_user(c, buffer);
633 if (rc)
634 return rc;
635 if (c == '0' || c == 'n' || c == 'N')
636 traceSMB = 0;
637 else if (c == '1' || c == 'y' || c == 'Y')
638 traceSMB = 1;
639
640 return count;
641 }
642
643 static const struct file_operations traceSMB_proc_fops = {
644 .owner = THIS_MODULE,
645 .open = traceSMB_proc_open,
646 .read = seq_read,
647 .llseek = seq_lseek,
648 .release = single_release,
649 .write = traceSMB_proc_write,
650 };
651
652 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
653 {
654 seq_printf(m, "%d\n", multiuser_mount);
655 return 0;
656 }
657
658 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
659 {
660 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
661 }
662
663 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
664 const char __user *buffer, size_t count, loff_t *ppos)
665 {
666 char c;
667 int rc;
668
669 rc = get_user(c, buffer);
670 if (rc)
671 return rc;
672 if (c == '0' || c == 'n' || c == 'N')
673 multiuser_mount = 0;
674 else if (c == '1' || c == 'y' || c == 'Y')
675 multiuser_mount = 1;
676
677 return count;
678 }
679
680 static const struct file_operations cifs_multiuser_mount_proc_fops = {
681 .owner = THIS_MODULE,
682 .open = cifs_multiuser_mount_proc_open,
683 .read = seq_read,
684 .llseek = seq_lseek,
685 .release = single_release,
686 .write = cifs_multiuser_mount_proc_write,
687 };
688
689 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
690 {
691 seq_printf(m, "0x%x\n", extended_security);
692 return 0;
693 }
694
695 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
696 {
697 return single_open(file, cifs_security_flags_proc_show, NULL);
698 }
699
700 static ssize_t cifs_security_flags_proc_write(struct file *file,
701 const char __user *buffer, size_t count, loff_t *ppos)
702 {
703 unsigned int flags;
704 char flags_string[12];
705 char c;
706
707 if ((count < 1) || (count > 11))
708 return -EINVAL;
709
710 memset(flags_string, 0, 12);
711
712 if (copy_from_user(flags_string, buffer, count))
713 return -EFAULT;
714
715 if (count < 3) {
716 /* single char or single char followed by null */
717 c = flags_string[0];
718 if (c == '0' || c == 'n' || c == 'N') {
719 extended_security = CIFSSEC_DEF; /* default */
720 return count;
721 } else if (c == '1' || c == 'y' || c == 'Y') {
722 extended_security = CIFSSEC_MAX;
723 return count;
724 } else if (!isdigit(c)) {
725 cERROR(1, ("invalid flag %c", c));
726 return -EINVAL;
727 }
728 }
729 /* else we have a number */
730
731 flags = simple_strtoul(flags_string, NULL, 0);
732
733 cFYI(1, ("sec flags 0x%x", flags));
734
735 if (flags <= 0) {
736 cERROR(1, ("invalid security flags %s", flags_string));
737 return -EINVAL;
738 }
739
740 if (flags & ~CIFSSEC_MASK) {
741 cERROR(1, ("attempt to set unsupported security flags 0x%x",
742 flags & ~CIFSSEC_MASK));
743 return -EINVAL;
744 }
745 /* flags look ok - update the global security flags for cifs module */
746 extended_security = flags;
747 if (extended_security & CIFSSEC_MUST_SIGN) {
748 /* requiring signing implies signing is allowed */
749 extended_security |= CIFSSEC_MAY_SIGN;
750 cFYI(1, ("packet signing now required"));
751 } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
752 cFYI(1, ("packet signing disabled"));
753 }
754 /* BB should we turn on MAY flags for other MUST options? */
755 return count;
756 }
757
758 static const struct file_operations cifs_security_flags_proc_fops = {
759 .owner = THIS_MODULE,
760 .open = cifs_security_flags_proc_open,
761 .read = seq_read,
762 .llseek = seq_lseek,
763 .release = single_release,
764 .write = cifs_security_flags_proc_write,
765 };
766 #else
767 inline void cifs_proc_init(void)
768 {
769 }
770
771 inline void cifs_proc_clean(void)
772 {
773 }
774 #endif /* PROC_FS */
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