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virtio_blk: don't bounce highmem requests
[linux-2.6/mini2440.git] / fs / cifs / cifs_debug.c
blob7f19fefd3d45a2790d426e68e59f80f687b4911c
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, "\nFlushes: %d",
344 atomic_read(&tcon->num_flushes));
345 seq_printf(m, "\nLocks: %d HardLinks: %d "
346 "Symlinks: %d",
347 atomic_read(&tcon->num_locks),
348 atomic_read(&tcon->num_hardlinks),
349 atomic_read(&tcon->num_symlinks));
350 seq_printf(m, "\nOpens: %d Closes: %d"
351 "Deletes: %d",
352 atomic_read(&tcon->num_opens),
353 atomic_read(&tcon->num_closes),
354 atomic_read(&tcon->num_deletes));
355 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
356 atomic_read(&tcon->num_mkdirs),
357 atomic_read(&tcon->num_rmdirs));
358 seq_printf(m, "\nRenames: %d T2 Renames %d",
359 atomic_read(&tcon->num_renames),
360 atomic_read(&tcon->num_t2renames));
361 seq_printf(m, "\nFindFirst: %d FNext %d "
362 "FClose %d",
363 atomic_read(&tcon->num_ffirst),
364 atomic_read(&tcon->num_fnext),
365 atomic_read(&tcon->num_fclose));
366 }
367 }
368 }
369 read_unlock(&cifs_tcp_ses_lock);
370
371 seq_putc(m, '\n');
372 return 0;
373 }
374
375 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
376 {
377 return single_open(file, cifs_stats_proc_show, NULL);
378 }
379
380 static const struct file_operations cifs_stats_proc_fops = {
381 .owner = THIS_MODULE,
382 .open = cifs_stats_proc_open,
383 .read = seq_read,
384 .llseek = seq_lseek,
385 .release = single_release,
386 .write = cifs_stats_proc_write,
387 };
388 #endif /* STATS */
389
390 static struct proc_dir_entry *proc_fs_cifs;
391 static const struct file_operations cifsFYI_proc_fops;
392 static const struct file_operations cifs_oplock_proc_fops;
393 static const struct file_operations cifs_lookup_cache_proc_fops;
394 static const struct file_operations traceSMB_proc_fops;
395 static const struct file_operations cifs_multiuser_mount_proc_fops;
396 static const struct file_operations cifs_security_flags_proc_fops;
397 static const struct file_operations cifs_experimental_proc_fops;
398 static const struct file_operations cifs_linux_ext_proc_fops;
399
400 void
401 cifs_proc_init(void)
402 {
403 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
404 if (proc_fs_cifs == NULL)
405 return;
406
407 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
408
409 #ifdef CONFIG_CIFS_STATS
410 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
411 #endif /* STATS */
412 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
413 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
414 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
415 proc_create("Experimental", 0, proc_fs_cifs,
416 &cifs_experimental_proc_fops);
417 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
418 &cifs_linux_ext_proc_fops);
419 proc_create("MultiuserMount", 0, proc_fs_cifs,
420 &cifs_multiuser_mount_proc_fops);
421 proc_create("SecurityFlags", 0, proc_fs_cifs,
422 &cifs_security_flags_proc_fops);
423 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
424 &cifs_lookup_cache_proc_fops);
425 }
426
427 void
428 cifs_proc_clean(void)
429 {
430 if (proc_fs_cifs == NULL)
431 return;
432
433 remove_proc_entry("DebugData", proc_fs_cifs);
434 remove_proc_entry("cifsFYI", proc_fs_cifs);
435 remove_proc_entry("traceSMB", proc_fs_cifs);
436 #ifdef CONFIG_CIFS_STATS
437 remove_proc_entry("Stats", proc_fs_cifs);
438 #endif
439 remove_proc_entry("MultiuserMount", proc_fs_cifs);
440 remove_proc_entry("OplockEnabled", proc_fs_cifs);
441 remove_proc_entry("SecurityFlags", proc_fs_cifs);
442 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
443 remove_proc_entry("Experimental", proc_fs_cifs);
444 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
445 remove_proc_entry("fs/cifs", NULL);
446 }
447
448 static int cifsFYI_proc_show(struct seq_file *m, void *v)
449 {
450 seq_printf(m, "%d\n", cifsFYI);
451 return 0;
452 }
453
454 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
455 {
456 return single_open(file, cifsFYI_proc_show, NULL);
457 }
458
459 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
460 size_t count, loff_t *ppos)
461 {
462 char c;
463 int rc;
464
465 rc = get_user(c, buffer);
466 if (rc)
467 return rc;
468 if (c == '0' || c == 'n' || c == 'N')
469 cifsFYI = 0;
470 else if (c == '1' || c == 'y' || c == 'Y')
471 cifsFYI = 1;
472 else if ((c > '1') && (c <= '9'))
473 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
474
475 return count;
476 }
477
478 static const struct file_operations cifsFYI_proc_fops = {
479 .owner = THIS_MODULE,
480 .open = cifsFYI_proc_open,
481 .read = seq_read,
482 .llseek = seq_lseek,
483 .release = single_release,
484 .write = cifsFYI_proc_write,
485 };
486
487 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
488 {
489 seq_printf(m, "%d\n", oplockEnabled);
490 return 0;
491 }
492
493 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
494 {
495 return single_open(file, cifs_oplock_proc_show, NULL);
496 }
497
498 static ssize_t cifs_oplock_proc_write(struct file *file,
499 const char __user *buffer, size_t count, loff_t *ppos)
500 {
501 char c;
502 int rc;
503
504 rc = get_user(c, buffer);
505 if (rc)
506 return rc;
507 if (c == '0' || c == 'n' || c == 'N')
508 oplockEnabled = 0;
509 else if (c == '1' || c == 'y' || c == 'Y')
510 oplockEnabled = 1;
511
512 return count;
513 }
514
515 static const struct file_operations cifs_oplock_proc_fops = {
516 .owner = THIS_MODULE,
517 .open = cifs_oplock_proc_open,
518 .read = seq_read,
519 .llseek = seq_lseek,
520 .release = single_release,
521 .write = cifs_oplock_proc_write,
522 };
523
524 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
525 {
526 seq_printf(m, "%d\n", experimEnabled);
527 return 0;
528 }
529
530 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
531 {
532 return single_open(file, cifs_experimental_proc_show, NULL);
533 }
534
535 static ssize_t cifs_experimental_proc_write(struct file *file,
536 const char __user *buffer, size_t count, loff_t *ppos)
537 {
538 char c;
539 int rc;
540
541 rc = get_user(c, buffer);
542 if (rc)
543 return rc;
544 if (c == '0' || c == 'n' || c == 'N')
545 experimEnabled = 0;
546 else if (c == '1' || c == 'y' || c == 'Y')
547 experimEnabled = 1;
548 else if (c == '2')
549 experimEnabled = 2;
550
551 return count;
552 }
553
554 static const struct file_operations cifs_experimental_proc_fops = {
555 .owner = THIS_MODULE,
556 .open = cifs_experimental_proc_open,
557 .read = seq_read,
558 .llseek = seq_lseek,
559 .release = single_release,
560 .write = cifs_experimental_proc_write,
561 };
562
563 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
564 {
565 seq_printf(m, "%d\n", linuxExtEnabled);
566 return 0;
567 }
568
569 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
570 {
571 return single_open(file, cifs_linux_ext_proc_show, NULL);
572 }
573
574 static ssize_t cifs_linux_ext_proc_write(struct file *file,
575 const char __user *buffer, size_t count, loff_t *ppos)
576 {
577 char c;
578 int rc;
579
580 rc = get_user(c, buffer);
581 if (rc)
582 return rc;
583 if (c == '0' || c == 'n' || c == 'N')
584 linuxExtEnabled = 0;
585 else if (c == '1' || c == 'y' || c == 'Y')
586 linuxExtEnabled = 1;
587
588 return count;
589 }
590
591 static const struct file_operations cifs_linux_ext_proc_fops = {
592 .owner = THIS_MODULE,
593 .open = cifs_linux_ext_proc_open,
594 .read = seq_read,
595 .llseek = seq_lseek,
596 .release = single_release,
597 .write = cifs_linux_ext_proc_write,
598 };
599
600 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
601 {
602 seq_printf(m, "%d\n", lookupCacheEnabled);
603 return 0;
604 }
605
606 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
607 {
608 return single_open(file, cifs_lookup_cache_proc_show, NULL);
609 }
610
611 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
612 const char __user *buffer, size_t count, loff_t *ppos)
613 {
614 char c;
615 int rc;
616
617 rc = get_user(c, buffer);
618 if (rc)
619 return rc;
620 if (c == '0' || c == 'n' || c == 'N')
621 lookupCacheEnabled = 0;
622 else if (c == '1' || c == 'y' || c == 'Y')
623 lookupCacheEnabled = 1;
624
625 return count;
626 }
627
628 static const struct file_operations cifs_lookup_cache_proc_fops = {
629 .owner = THIS_MODULE,
630 .open = cifs_lookup_cache_proc_open,
631 .read = seq_read,
632 .llseek = seq_lseek,
633 .release = single_release,
634 .write = cifs_lookup_cache_proc_write,
635 };
636
637 static int traceSMB_proc_show(struct seq_file *m, void *v)
638 {
639 seq_printf(m, "%d\n", traceSMB);
640 return 0;
641 }
642
643 static int traceSMB_proc_open(struct inode *inode, struct file *file)
644 {
645 return single_open(file, traceSMB_proc_show, NULL);
646 }
647
648 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
649 size_t count, loff_t *ppos)
650 {
651 char c;
652 int rc;
653
654 rc = get_user(c, buffer);
655 if (rc)
656 return rc;
657 if (c == '0' || c == 'n' || c == 'N')
658 traceSMB = 0;
659 else if (c == '1' || c == 'y' || c == 'Y')
660 traceSMB = 1;
661
662 return count;
663 }
664
665 static const struct file_operations traceSMB_proc_fops = {
666 .owner = THIS_MODULE,
667 .open = traceSMB_proc_open,
668 .read = seq_read,
669 .llseek = seq_lseek,
670 .release = single_release,
671 .write = traceSMB_proc_write,
672 };
673
674 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
675 {
676 seq_printf(m, "%d\n", multiuser_mount);
677 return 0;
678 }
679
680 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
681 {
682 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
683 }
684
685 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
686 const char __user *buffer, size_t count, loff_t *ppos)
687 {
688 char c;
689 int rc;
690
691 rc = get_user(c, buffer);
692 if (rc)
693 return rc;
694 if (c == '0' || c == 'n' || c == 'N')
695 multiuser_mount = 0;
696 else if (c == '1' || c == 'y' || c == 'Y')
697 multiuser_mount = 1;
698
699 return count;
700 }
701
702 static const struct file_operations cifs_multiuser_mount_proc_fops = {
703 .owner = THIS_MODULE,
704 .open = cifs_multiuser_mount_proc_open,
705 .read = seq_read,
706 .llseek = seq_lseek,
707 .release = single_release,
708 .write = cifs_multiuser_mount_proc_write,
709 };
710
711 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
712 {
713 seq_printf(m, "0x%x\n", extended_security);
714 return 0;
715 }
716
717 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
718 {
719 return single_open(file, cifs_security_flags_proc_show, NULL);
720 }
721
722 static ssize_t cifs_security_flags_proc_write(struct file *file,
723 const char __user *buffer, size_t count, loff_t *ppos)
724 {
725 unsigned int flags;
726 char flags_string[12];
727 char c;
728
729 if ((count < 1) || (count > 11))
730 return -EINVAL;
731
732 memset(flags_string, 0, 12);
733
734 if (copy_from_user(flags_string, buffer, count))
735 return -EFAULT;
736
737 if (count < 3) {
738 /* single char or single char followed by null */
739 c = flags_string[0];
740 if (c == '0' || c == 'n' || c == 'N') {
741 extended_security = CIFSSEC_DEF; /* default */
742 return count;
743 } else if (c == '1' || c == 'y' || c == 'Y') {
744 extended_security = CIFSSEC_MAX;
745 return count;
746 } else if (!isdigit(c)) {
747 cERROR(1, ("invalid flag %c", c));
748 return -EINVAL;
749 }
750 }
751 /* else we have a number */
752
753 flags = simple_strtoul(flags_string, NULL, 0);
754
755 cFYI(1, ("sec flags 0x%x", flags));
756
757 if (flags <= 0) {
758 cERROR(1, ("invalid security flags %s", flags_string));
759 return -EINVAL;
760 }
761
762 if (flags & ~CIFSSEC_MASK) {
763 cERROR(1, ("attempt to set unsupported security flags 0x%x",
764 flags & ~CIFSSEC_MASK));
765 return -EINVAL;
766 }
767 /* flags look ok - update the global security flags for cifs module */
768 extended_security = flags;
769 if (extended_security & CIFSSEC_MUST_SIGN) {
770 /* requiring signing implies signing is allowed */
771 extended_security |= CIFSSEC_MAY_SIGN;
772 cFYI(1, ("packet signing now required"));
773 } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
774 cFYI(1, ("packet signing disabled"));
775 }
776 /* BB should we turn on MAY flags for other MUST options? */
777 return count;
778 }
779
780 static const struct file_operations cifs_security_flags_proc_fops = {
781 .owner = THIS_MODULE,
782 .open = cifs_security_flags_proc_open,
783 .read = seq_read,
784 .llseek = seq_lseek,
785 .release = single_release,
786 .write = cifs_security_flags_proc_write,
787 };
788 #else
789 inline void cifs_proc_init(void)
790 {
791 }
792
793 inline void cifs_proc_clean(void)
794 {
795 }
796 #endif /* PROC_FS */
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