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x86: make sure initmem is writable on 64-bit
[linux-2.6/mini2440.git] / fs / cifs / cifs_debug.c
blob490e34bbf27a66641c0bad3327e5bb22156a88af
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_closes, 0);
265 atomic_set(&tcon->num_deletes, 0);
266 atomic_set(&tcon->num_mkdirs, 0);
267 atomic_set(&tcon->num_rmdirs, 0);
268 atomic_set(&tcon->num_renames, 0);
269 atomic_set(&tcon->num_t2renames, 0);
270 atomic_set(&tcon->num_ffirst, 0);
271 atomic_set(&tcon->num_fnext, 0);
272 atomic_set(&tcon->num_fclose, 0);
273 atomic_set(&tcon->num_hardlinks, 0);
274 atomic_set(&tcon->num_symlinks, 0);
275 atomic_set(&tcon->num_locks, 0);
276 }
277 }
278 }
279 read_unlock(&cifs_tcp_ses_lock);
280 }
281
282 return count;
283 }
284
285 static int cifs_stats_proc_show(struct seq_file *m, void *v)
286 {
287 int i;
288 struct list_head *tmp1, *tmp2, *tmp3;
289 struct TCP_Server_Info *server;
290 struct cifsSesInfo *ses;
291 struct cifsTconInfo *tcon;
292
293 seq_printf(m,
294 "Resources in use\nCIFS Session: %d\n",
295 sesInfoAllocCount.counter);
296 seq_printf(m, "Share (unique mount targets): %d\n",
297 tconInfoAllocCount.counter);
298 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
299 bufAllocCount.counter,
300 cifs_min_rcv + tcpSesAllocCount.counter);
301 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
302 smBufAllocCount.counter, cifs_min_small);
303 #ifdef CONFIG_CIFS_STATS2
304 seq_printf(m, "Total Large %d Small %d Allocations\n",
305 atomic_read(&totBufAllocCount),
306 atomic_read(&totSmBufAllocCount));
307 #endif /* CONFIG_CIFS_STATS2 */
308
309 seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
310 seq_printf(m,
311 "\n%d session %d share reconnects\n",
312 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
313
314 seq_printf(m,
315 "Total vfs operations: %d maximum at one time: %d\n",
316 GlobalCurrentXid, GlobalMaxActiveXid);
317
318 i = 0;
319 read_lock(&cifs_tcp_ses_lock);
320 list_for_each(tmp1, &cifs_tcp_ses_list) {
321 server = list_entry(tmp1, struct TCP_Server_Info,
322 tcp_ses_list);
323 list_for_each(tmp2, &server->smb_ses_list) {
324 ses = list_entry(tmp2, struct cifsSesInfo,
325 smb_ses_list);
326 list_for_each(tmp3, &ses->tcon_list) {
327 tcon = list_entry(tmp3,
328 struct cifsTconInfo,
329 tcon_list);
330 i++;
331 seq_printf(m, "\n%d) %s", i, tcon->treeName);
332 if (tcon->need_reconnect)
333 seq_puts(m, "\tDISCONNECTED ");
334 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
335 atomic_read(&tcon->num_smbs_sent),
336 atomic_read(&tcon->num_oplock_brks));
337 seq_printf(m, "\nReads: %d Bytes: %lld",
338 atomic_read(&tcon->num_reads),
339 (long long)(tcon->bytes_read));
340 seq_printf(m, "\nWrites: %d Bytes: %lld",
341 atomic_read(&tcon->num_writes),
342 (long long)(tcon->bytes_written));
343 seq_printf(m, "\nLocks: %d HardLinks: %d "
344 "Symlinks: %d",
345 atomic_read(&tcon->num_locks),
346 atomic_read(&tcon->num_hardlinks),
347 atomic_read(&tcon->num_symlinks));
348 seq_printf(m, "\nOpens: %d Closes: %d"
349 "Deletes: %d",
350 atomic_read(&tcon->num_opens),
351 atomic_read(&tcon->num_closes),
352 atomic_read(&tcon->num_deletes));
353 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
354 atomic_read(&tcon->num_mkdirs),
355 atomic_read(&tcon->num_rmdirs));
356 seq_printf(m, "\nRenames: %d T2 Renames %d",
357 atomic_read(&tcon->num_renames),
358 atomic_read(&tcon->num_t2renames));
359 seq_printf(m, "\nFindFirst: %d FNext %d "
360 "FClose %d",
361 atomic_read(&tcon->num_ffirst),
362 atomic_read(&tcon->num_fnext),
363 atomic_read(&tcon->num_fclose));
364 }
365 }
366 }
367 read_unlock(&cifs_tcp_ses_lock);
368
369 seq_putc(m, '\n');
370 return 0;
371 }
372
373 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
374 {
375 return single_open(file, cifs_stats_proc_show, NULL);
376 }
377
378 static const struct file_operations cifs_stats_proc_fops = {
379 .owner = THIS_MODULE,
380 .open = cifs_stats_proc_open,
381 .read = seq_read,
382 .llseek = seq_lseek,
383 .release = single_release,
384 .write = cifs_stats_proc_write,
385 };
386 #endif /* STATS */
387
388 static struct proc_dir_entry *proc_fs_cifs;
389 static const struct file_operations cifsFYI_proc_fops;
390 static const struct file_operations cifs_oplock_proc_fops;
391 static const struct file_operations cifs_lookup_cache_proc_fops;
392 static const struct file_operations traceSMB_proc_fops;
393 static const struct file_operations cifs_multiuser_mount_proc_fops;
394 static const struct file_operations cifs_security_flags_proc_fops;
395 static const struct file_operations cifs_experimental_proc_fops;
396 static const struct file_operations cifs_linux_ext_proc_fops;
397
398 void
399 cifs_proc_init(void)
400 {
401 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
402 if (proc_fs_cifs == NULL)
403 return;
404
405 proc_fs_cifs->owner = THIS_MODULE;
406 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
407
408 #ifdef CONFIG_CIFS_STATS
409 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
410 #endif /* STATS */
411 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
412 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
413 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
414 proc_create("Experimental", 0, proc_fs_cifs,
415 &cifs_experimental_proc_fops);
416 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
417 &cifs_linux_ext_proc_fops);
418 proc_create("MultiuserMount", 0, proc_fs_cifs,
419 &cifs_multiuser_mount_proc_fops);
420 proc_create("SecurityFlags", 0, proc_fs_cifs,
421 &cifs_security_flags_proc_fops);
422 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
423 &cifs_lookup_cache_proc_fops);
424 }
425
426 void
427 cifs_proc_clean(void)
428 {
429 if (proc_fs_cifs == NULL)
430 return;
431
432 remove_proc_entry("DebugData", proc_fs_cifs);
433 remove_proc_entry("cifsFYI", proc_fs_cifs);
434 remove_proc_entry("traceSMB", proc_fs_cifs);
435 #ifdef CONFIG_CIFS_STATS
436 remove_proc_entry("Stats", proc_fs_cifs);
437 #endif
438 remove_proc_entry("MultiuserMount", proc_fs_cifs);
439 remove_proc_entry("OplockEnabled", proc_fs_cifs);
440 remove_proc_entry("SecurityFlags", proc_fs_cifs);
441 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
442 remove_proc_entry("Experimental", proc_fs_cifs);
443 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
444 remove_proc_entry("fs/cifs", NULL);
445 }
446
447 static int cifsFYI_proc_show(struct seq_file *m, void *v)
448 {
449 seq_printf(m, "%d\n", cifsFYI);
450 return 0;
451 }
452
453 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
454 {
455 return single_open(file, cifsFYI_proc_show, NULL);
456 }
457
458 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
459 size_t count, loff_t *ppos)
460 {
461 char c;
462 int rc;
463
464 rc = get_user(c, buffer);
465 if (rc)
466 return rc;
467 if (c == '0' || c == 'n' || c == 'N')
468 cifsFYI = 0;
469 else if (c == '1' || c == 'y' || c == 'Y')
470 cifsFYI = 1;
471 else if ((c > '1') && (c <= '9'))
472 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
473
474 return count;
475 }
476
477 static const struct file_operations cifsFYI_proc_fops = {
478 .owner = THIS_MODULE,
479 .open = cifsFYI_proc_open,
480 .read = seq_read,
481 .llseek = seq_lseek,
482 .release = single_release,
483 .write = cifsFYI_proc_write,
484 };
485
486 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
487 {
488 seq_printf(m, "%d\n", oplockEnabled);
489 return 0;
490 }
491
492 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
493 {
494 return single_open(file, cifs_oplock_proc_show, NULL);
495 }
496
497 static ssize_t cifs_oplock_proc_write(struct file *file,
498 const char __user *buffer, size_t count, loff_t *ppos)
499 {
500 char c;
501 int rc;
502
503 rc = get_user(c, buffer);
504 if (rc)
505 return rc;
506 if (c == '0' || c == 'n' || c == 'N')
507 oplockEnabled = 0;
508 else if (c == '1' || c == 'y' || c == 'Y')
509 oplockEnabled = 1;
510
511 return count;
512 }
513
514 static const struct file_operations cifs_oplock_proc_fops = {
515 .owner = THIS_MODULE,
516 .open = cifs_oplock_proc_open,
517 .read = seq_read,
518 .llseek = seq_lseek,
519 .release = single_release,
520 .write = cifs_oplock_proc_write,
521 };
522
523 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
524 {
525 seq_printf(m, "%d\n", experimEnabled);
526 return 0;
527 }
528
529 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
530 {
531 return single_open(file, cifs_experimental_proc_show, NULL);
532 }
533
534 static ssize_t cifs_experimental_proc_write(struct file *file,
535 const char __user *buffer, size_t count, loff_t *ppos)
536 {
537 char c;
538 int rc;
539
540 rc = get_user(c, buffer);
541 if (rc)
542 return rc;
543 if (c == '0' || c == 'n' || c == 'N')
544 experimEnabled = 0;
545 else if (c == '1' || c == 'y' || c == 'Y')
546 experimEnabled = 1;
547 else if (c == '2')
548 experimEnabled = 2;
549
550 return count;
551 }
552
553 static const struct file_operations cifs_experimental_proc_fops = {
554 .owner = THIS_MODULE,
555 .open = cifs_experimental_proc_open,
556 .read = seq_read,
557 .llseek = seq_lseek,
558 .release = single_release,
559 .write = cifs_experimental_proc_write,
560 };
561
562 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
563 {
564 seq_printf(m, "%d\n", linuxExtEnabled);
565 return 0;
566 }
567
568 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
569 {
570 return single_open(file, cifs_linux_ext_proc_show, NULL);
571 }
572
573 static ssize_t cifs_linux_ext_proc_write(struct file *file,
574 const char __user *buffer, size_t count, loff_t *ppos)
575 {
576 char c;
577 int rc;
578
579 rc = get_user(c, buffer);
580 if (rc)
581 return rc;
582 if (c == '0' || c == 'n' || c == 'N')
583 linuxExtEnabled = 0;
584 else if (c == '1' || c == 'y' || c == 'Y')
585 linuxExtEnabled = 1;
586
587 return count;
588 }
589
590 static const struct file_operations cifs_linux_ext_proc_fops = {
591 .owner = THIS_MODULE,
592 .open = cifs_linux_ext_proc_open,
593 .read = seq_read,
594 .llseek = seq_lseek,
595 .release = single_release,
596 .write = cifs_linux_ext_proc_write,
597 };
598
599 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
600 {
601 seq_printf(m, "%d\n", lookupCacheEnabled);
602 return 0;
603 }
604
605 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
606 {
607 return single_open(file, cifs_lookup_cache_proc_show, NULL);
608 }
609
610 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
611 const char __user *buffer, size_t count, loff_t *ppos)
612 {
613 char c;
614 int rc;
615
616 rc = get_user(c, buffer);
617 if (rc)
618 return rc;
619 if (c == '0' || c == 'n' || c == 'N')
620 lookupCacheEnabled = 0;
621 else if (c == '1' || c == 'y' || c == 'Y')
622 lookupCacheEnabled = 1;
623
624 return count;
625 }
626
627 static const struct file_operations cifs_lookup_cache_proc_fops = {
628 .owner = THIS_MODULE,
629 .open = cifs_lookup_cache_proc_open,
630 .read = seq_read,
631 .llseek = seq_lseek,
632 .release = single_release,
633 .write = cifs_lookup_cache_proc_write,
634 };
635
636 static int traceSMB_proc_show(struct seq_file *m, void *v)
637 {
638 seq_printf(m, "%d\n", traceSMB);
639 return 0;
640 }
641
642 static int traceSMB_proc_open(struct inode *inode, struct file *file)
643 {
644 return single_open(file, traceSMB_proc_show, NULL);
645 }
646
647 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
648 size_t count, loff_t *ppos)
649 {
650 char c;
651 int rc;
652
653 rc = get_user(c, buffer);
654 if (rc)
655 return rc;
656 if (c == '0' || c == 'n' || c == 'N')
657 traceSMB = 0;
658 else if (c == '1' || c == 'y' || c == 'Y')
659 traceSMB = 1;
660
661 return count;
662 }
663
664 static const struct file_operations traceSMB_proc_fops = {
665 .owner = THIS_MODULE,
666 .open = traceSMB_proc_open,
667 .read = seq_read,
668 .llseek = seq_lseek,
669 .release = single_release,
670 .write = traceSMB_proc_write,
671 };
672
673 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
674 {
675 seq_printf(m, "%d\n", multiuser_mount);
676 return 0;
677 }
678
679 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
680 {
681 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
682 }
683
684 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
685 const char __user *buffer, size_t count, loff_t *ppos)
686 {
687 char c;
688 int rc;
689
690 rc = get_user(c, buffer);
691 if (rc)
692 return rc;
693 if (c == '0' || c == 'n' || c == 'N')
694 multiuser_mount = 0;
695 else if (c == '1' || c == 'y' || c == 'Y')
696 multiuser_mount = 1;
697
698 return count;
699 }
700
701 static const struct file_operations cifs_multiuser_mount_proc_fops = {
702 .owner = THIS_MODULE,
703 .open = cifs_multiuser_mount_proc_open,
704 .read = seq_read,
705 .llseek = seq_lseek,
706 .release = single_release,
707 .write = cifs_multiuser_mount_proc_write,
708 };
709
710 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
711 {
712 seq_printf(m, "0x%x\n", extended_security);
713 return 0;
714 }
715
716 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
717 {
718 return single_open(file, cifs_security_flags_proc_show, NULL);
719 }
720
721 static ssize_t cifs_security_flags_proc_write(struct file *file,
722 const char __user *buffer, size_t count, loff_t *ppos)
723 {
724 unsigned int flags;
725 char flags_string[12];
726 char c;
727
728 if ((count < 1) || (count > 11))
729 return -EINVAL;
730
731 memset(flags_string, 0, 12);
732
733 if (copy_from_user(flags_string, buffer, count))
734 return -EFAULT;
735
736 if (count < 3) {
737 /* single char or single char followed by null */
738 c = flags_string[0];
739 if (c == '0' || c == 'n' || c == 'N') {
740 extended_security = CIFSSEC_DEF; /* default */
741 return count;
742 } else if (c == '1' || c == 'y' || c == 'Y') {
743 extended_security = CIFSSEC_MAX;
744 return count;
745 } else if (!isdigit(c)) {
746 cERROR(1, ("invalid flag %c", c));
747 return -EINVAL;
748 }
749 }
750 /* else we have a number */
751
752 flags = simple_strtoul(flags_string, NULL, 0);
753
754 cFYI(1, ("sec flags 0x%x", flags));
755
756 if (flags <= 0) {
757 cERROR(1, ("invalid security flags %s", flags_string));
758 return -EINVAL;
759 }
760
761 if (flags & ~CIFSSEC_MASK) {
762 cERROR(1, ("attempt to set unsupported security flags 0x%x",
763 flags & ~CIFSSEC_MASK));
764 return -EINVAL;
765 }
766 /* flags look ok - update the global security flags for cifs module */
767 extended_security = flags;
768 if (extended_security & CIFSSEC_MUST_SIGN) {
769 /* requiring signing implies signing is allowed */
770 extended_security |= CIFSSEC_MAY_SIGN;
771 cFYI(1, ("packet signing now required"));
772 } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
773 cFYI(1, ("packet signing disabled"));
774 }
775 /* BB should we turn on MAY flags for other MUST options? */
776 return count;
777 }
778
779 static const struct file_operations cifs_security_flags_proc_fops = {
780 .owner = THIS_MODULE,
781 .open = cifs_security_flags_proc_open,
782 .read = seq_read,
783 .llseek = seq_lseek,
784 .release = single_release,
785 .write = cifs_security_flags_proc_write,
786 };
787 #else
788 inline void cifs_proc_init(void)
789 {
790 }
791
792 inline void cifs_proc_clean(void)
793 {
794 }
795 #endif /* PROC_FS */
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