]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - fs/cifs/cifs_debug.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
[mirror_ubuntu-bionic-kernel.git] / fs / cifs / cifs_debug.c
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(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 Cbdata: %p Mid %d",
83 mid_entry->midState,
84 (int)mid_entry->command,
85 mid_entry->pid,
86 mid_entry->callback_data,
87 mid_entry->mid);
88 #ifdef CONFIG_CIFS_STATS2
89 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
90 mid_entry->largeBuf,
91 mid_entry->resp_buf,
92 mid_entry->when_received,
93 jiffies);
94 #endif /* STATS2 */
95 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
96 mid_entry->multiEnd);
97 if (mid_entry->resp_buf) {
98 cifs_dump_detail(mid_entry->resp_buf);
99 cifs_dump_mem("existing buf: ",
100 mid_entry->resp_buf, 62);
101 }
102 }
103 spin_unlock(&GlobalMid_Lock);
104 }
105 #endif /* CONFIG_CIFS_DEBUG2 */
106
107 #ifdef CONFIG_PROC_FS
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 cifs_ses *ses;
114 struct cifs_tcon *tcon;
115 int i, j;
116 __u32 dev_type;
117
118 seq_puts(m,
119 "Display Internal CIFS Data Structures for Debugging\n"
120 "---------------------------------------------------\n");
121 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
122 seq_printf(m, "Features:");
123 #ifdef CONFIG_CIFS_DFS_UPCALL
124 seq_printf(m, " dfs");
125 #endif
126 #ifdef CONFIG_CIFS_FSCACHE
127 seq_printf(m, " fscache");
128 #endif
129 #ifdef CONFIG_CIFS_WEAK_PW_HASH
130 seq_printf(m, " lanman");
131 #endif
132 #ifdef CONFIG_CIFS_POSIX
133 seq_printf(m, " posix");
134 #endif
135 #ifdef CONFIG_CIFS_UPCALL
136 seq_printf(m, " spnego");
137 #endif
138 #ifdef CONFIG_CIFS_XATTR
139 seq_printf(m, " xattr");
140 #endif
141 #ifdef CONFIG_CIFS_ACL
142 seq_printf(m, " acl");
143 #endif
144 seq_putc(m, '\n');
145 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
146 seq_printf(m, "Servers:");
147
148 i = 0;
149 spin_lock(&cifs_tcp_ses_lock);
150 list_for_each(tmp1, &cifs_tcp_ses_list) {
151 server = list_entry(tmp1, struct TCP_Server_Info,
152 tcp_ses_list);
153 i++;
154 list_for_each(tmp2, &server->smb_ses_list) {
155 ses = list_entry(tmp2, struct cifs_ses,
156 smb_ses_list);
157 if ((ses->serverDomain == NULL) ||
158 (ses->serverOS == NULL) ||
159 (ses->serverNOS == NULL)) {
160 seq_printf(m, "\n%d) entry for %s not fully "
161 "displayed\n\t", i, ses->serverName);
162 } else {
163 seq_printf(m,
164 "\n%d) Name: %s Domain: %s Uses: %d OS:"
165 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
166 " session status: %d\t",
167 i, ses->serverName, ses->serverDomain,
168 ses->ses_count, ses->serverOS, ses->serverNOS,
169 ses->capabilities, ses->status);
170 }
171 seq_printf(m, "TCP status: %d\n\tLocal Users To "
172 "Server: %d SecMode: 0x%x Req On Wire: %d",
173 server->tcpStatus, server->srv_count,
174 server->sec_mode, in_flight(server));
175
176 #ifdef CONFIG_CIFS_STATS2
177 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
178 atomic_read(&server->in_send),
179 atomic_read(&server->num_waiters));
180 #endif
181
182 seq_puts(m, "\n\tShares:");
183 j = 0;
184 list_for_each(tmp3, &ses->tcon_list) {
185 tcon = list_entry(tmp3, struct cifs_tcon,
186 tcon_list);
187 ++j;
188 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
189 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
190 tcon->treeName, tcon->tc_count);
191 if (tcon->nativeFileSystem) {
192 seq_printf(m, "Type: %s ",
193 tcon->nativeFileSystem);
194 }
195 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
196 "\nPathComponentMax: %d Status: 0x%d",
197 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
198 le32_to_cpu(tcon->fsAttrInfo.Attributes),
199 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
200 tcon->tidStatus);
201 if (dev_type == FILE_DEVICE_DISK)
202 seq_puts(m, " type: DISK ");
203 else if (dev_type == FILE_DEVICE_CD_ROM)
204 seq_puts(m, " type: CDROM ");
205 else
206 seq_printf(m, " type: %d ", dev_type);
207
208 if (tcon->need_reconnect)
209 seq_puts(m, "\tDISCONNECTED ");
210 seq_putc(m, '\n');
211 }
212
213 seq_puts(m, "\n\tMIDs:\n");
214
215 spin_lock(&GlobalMid_Lock);
216 list_for_each(tmp3, &server->pending_mid_q) {
217 mid_entry = list_entry(tmp3, struct mid_q_entry,
218 qhead);
219 seq_printf(m, "\tState: %d com: %d pid:"
220 " %d cbdata: %p mid %d\n",
221 mid_entry->midState,
222 (int)mid_entry->command,
223 mid_entry->pid,
224 mid_entry->callback_data,
225 mid_entry->mid);
226 }
227 spin_unlock(&GlobalMid_Lock);
228 }
229 }
230 spin_unlock(&cifs_tcp_ses_lock);
231 seq_putc(m, '\n');
232
233 /* BB add code to dump additional info such as TCP session info now */
234 return 0;
235 }
236
237 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
238 {
239 return single_open(file, cifs_debug_data_proc_show, NULL);
240 }
241
242 static const struct file_operations cifs_debug_data_proc_fops = {
243 .owner = THIS_MODULE,
244 .open = cifs_debug_data_proc_open,
245 .read = seq_read,
246 .llseek = seq_lseek,
247 .release = single_release,
248 };
249
250 #ifdef CONFIG_CIFS_STATS
251 static ssize_t cifs_stats_proc_write(struct file *file,
252 const char __user *buffer, size_t count, loff_t *ppos)
253 {
254 char c;
255 int rc;
256 struct list_head *tmp1, *tmp2, *tmp3;
257 struct TCP_Server_Info *server;
258 struct cifs_ses *ses;
259 struct cifs_tcon *tcon;
260
261 rc = get_user(c, buffer);
262 if (rc)
263 return rc;
264
265 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
266 #ifdef CONFIG_CIFS_STATS2
267 atomic_set(&totBufAllocCount, 0);
268 atomic_set(&totSmBufAllocCount, 0);
269 #endif /* CONFIG_CIFS_STATS2 */
270 spin_lock(&cifs_tcp_ses_lock);
271 list_for_each(tmp1, &cifs_tcp_ses_list) {
272 server = list_entry(tmp1, struct TCP_Server_Info,
273 tcp_ses_list);
274 list_for_each(tmp2, &server->smb_ses_list) {
275 ses = list_entry(tmp2, struct cifs_ses,
276 smb_ses_list);
277 list_for_each(tmp3, &ses->tcon_list) {
278 tcon = list_entry(tmp3,
279 struct cifs_tcon,
280 tcon_list);
281 atomic_set(&tcon->num_smbs_sent, 0);
282 atomic_set(&tcon->num_writes, 0);
283 atomic_set(&tcon->num_reads, 0);
284 atomic_set(&tcon->num_oplock_brks, 0);
285 atomic_set(&tcon->num_opens, 0);
286 atomic_set(&tcon->num_posixopens, 0);
287 atomic_set(&tcon->num_posixmkdirs, 0);
288 atomic_set(&tcon->num_closes, 0);
289 atomic_set(&tcon->num_deletes, 0);
290 atomic_set(&tcon->num_mkdirs, 0);
291 atomic_set(&tcon->num_rmdirs, 0);
292 atomic_set(&tcon->num_renames, 0);
293 atomic_set(&tcon->num_t2renames, 0);
294 atomic_set(&tcon->num_ffirst, 0);
295 atomic_set(&tcon->num_fnext, 0);
296 atomic_set(&tcon->num_fclose, 0);
297 atomic_set(&tcon->num_hardlinks, 0);
298 atomic_set(&tcon->num_symlinks, 0);
299 atomic_set(&tcon->num_locks, 0);
300 }
301 }
302 }
303 spin_unlock(&cifs_tcp_ses_lock);
304 }
305
306 return count;
307 }
308
309 static int cifs_stats_proc_show(struct seq_file *m, void *v)
310 {
311 int i;
312 struct list_head *tmp1, *tmp2, *tmp3;
313 struct TCP_Server_Info *server;
314 struct cifs_ses *ses;
315 struct cifs_tcon *tcon;
316
317 seq_printf(m,
318 "Resources in use\nCIFS Session: %d\n",
319 sesInfoAllocCount.counter);
320 seq_printf(m, "Share (unique mount targets): %d\n",
321 tconInfoAllocCount.counter);
322 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
323 bufAllocCount.counter,
324 cifs_min_rcv + tcpSesAllocCount.counter);
325 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
326 smBufAllocCount.counter, cifs_min_small);
327 #ifdef CONFIG_CIFS_STATS2
328 seq_printf(m, "Total Large %d Small %d Allocations\n",
329 atomic_read(&totBufAllocCount),
330 atomic_read(&totSmBufAllocCount));
331 #endif /* CONFIG_CIFS_STATS2 */
332
333 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
334 seq_printf(m,
335 "\n%d session %d share reconnects\n",
336 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
337
338 seq_printf(m,
339 "Total vfs operations: %d maximum at one time: %d\n",
340 GlobalCurrentXid, GlobalMaxActiveXid);
341
342 i = 0;
343 spin_lock(&cifs_tcp_ses_lock);
344 list_for_each(tmp1, &cifs_tcp_ses_list) {
345 server = list_entry(tmp1, struct TCP_Server_Info,
346 tcp_ses_list);
347 list_for_each(tmp2, &server->smb_ses_list) {
348 ses = list_entry(tmp2, struct cifs_ses,
349 smb_ses_list);
350 list_for_each(tmp3, &ses->tcon_list) {
351 tcon = list_entry(tmp3,
352 struct cifs_tcon,
353 tcon_list);
354 i++;
355 seq_printf(m, "\n%d) %s", i, tcon->treeName);
356 if (tcon->need_reconnect)
357 seq_puts(m, "\tDISCONNECTED ");
358 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
359 atomic_read(&tcon->num_smbs_sent),
360 atomic_read(&tcon->num_oplock_brks));
361 seq_printf(m, "\nReads: %d Bytes: %lld",
362 atomic_read(&tcon->num_reads),
363 (long long)(tcon->bytes_read));
364 seq_printf(m, "\nWrites: %d Bytes: %lld",
365 atomic_read(&tcon->num_writes),
366 (long long)(tcon->bytes_written));
367 seq_printf(m, "\nFlushes: %d",
368 atomic_read(&tcon->num_flushes));
369 seq_printf(m, "\nLocks: %d HardLinks: %d "
370 "Symlinks: %d",
371 atomic_read(&tcon->num_locks),
372 atomic_read(&tcon->num_hardlinks),
373 atomic_read(&tcon->num_symlinks));
374 seq_printf(m, "\nOpens: %d Closes: %d "
375 "Deletes: %d",
376 atomic_read(&tcon->num_opens),
377 atomic_read(&tcon->num_closes),
378 atomic_read(&tcon->num_deletes));
379 seq_printf(m, "\nPosix Opens: %d "
380 "Posix Mkdirs: %d",
381 atomic_read(&tcon->num_posixopens),
382 atomic_read(&tcon->num_posixmkdirs));
383 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
384 atomic_read(&tcon->num_mkdirs),
385 atomic_read(&tcon->num_rmdirs));
386 seq_printf(m, "\nRenames: %d T2 Renames %d",
387 atomic_read(&tcon->num_renames),
388 atomic_read(&tcon->num_t2renames));
389 seq_printf(m, "\nFindFirst: %d FNext %d "
390 "FClose %d",
391 atomic_read(&tcon->num_ffirst),
392 atomic_read(&tcon->num_fnext),
393 atomic_read(&tcon->num_fclose));
394 }
395 }
396 }
397 spin_unlock(&cifs_tcp_ses_lock);
398
399 seq_putc(m, '\n');
400 return 0;
401 }
402
403 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
404 {
405 return single_open(file, cifs_stats_proc_show, NULL);
406 }
407
408 static const struct file_operations cifs_stats_proc_fops = {
409 .owner = THIS_MODULE,
410 .open = cifs_stats_proc_open,
411 .read = seq_read,
412 .llseek = seq_lseek,
413 .release = single_release,
414 .write = cifs_stats_proc_write,
415 };
416 #endif /* STATS */
417
418 static struct proc_dir_entry *proc_fs_cifs;
419 static const struct file_operations cifsFYI_proc_fops;
420 static const struct file_operations cifs_oplock_proc_fops;
421 static const struct file_operations cifs_lookup_cache_proc_fops;
422 static const struct file_operations traceSMB_proc_fops;
423 static const struct file_operations cifs_multiuser_mount_proc_fops;
424 static const struct file_operations cifs_security_flags_proc_fops;
425 static const struct file_operations cifs_linux_ext_proc_fops;
426
427 void
428 cifs_proc_init(void)
429 {
430 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
431 if (proc_fs_cifs == NULL)
432 return;
433
434 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
435
436 #ifdef CONFIG_CIFS_STATS
437 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
438 #endif /* STATS */
439 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
440 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
441 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
442 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
443 &cifs_linux_ext_proc_fops);
444 proc_create("MultiuserMount", 0, proc_fs_cifs,
445 &cifs_multiuser_mount_proc_fops);
446 proc_create("SecurityFlags", 0, proc_fs_cifs,
447 &cifs_security_flags_proc_fops);
448 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
449 &cifs_lookup_cache_proc_fops);
450 }
451
452 void
453 cifs_proc_clean(void)
454 {
455 if (proc_fs_cifs == NULL)
456 return;
457
458 remove_proc_entry("DebugData", proc_fs_cifs);
459 remove_proc_entry("cifsFYI", proc_fs_cifs);
460 remove_proc_entry("traceSMB", proc_fs_cifs);
461 #ifdef CONFIG_CIFS_STATS
462 remove_proc_entry("Stats", proc_fs_cifs);
463 #endif
464 remove_proc_entry("MultiuserMount", proc_fs_cifs);
465 remove_proc_entry("OplockEnabled", proc_fs_cifs);
466 remove_proc_entry("SecurityFlags", proc_fs_cifs);
467 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
468 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
469 remove_proc_entry("fs/cifs", NULL);
470 }
471
472 static int cifsFYI_proc_show(struct seq_file *m, void *v)
473 {
474 seq_printf(m, "%d\n", cifsFYI);
475 return 0;
476 }
477
478 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
479 {
480 return single_open(file, cifsFYI_proc_show, NULL);
481 }
482
483 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
484 size_t count, loff_t *ppos)
485 {
486 char c;
487 int rc;
488
489 rc = get_user(c, buffer);
490 if (rc)
491 return rc;
492 if (c == '0' || c == 'n' || c == 'N')
493 cifsFYI = 0;
494 else if (c == '1' || c == 'y' || c == 'Y')
495 cifsFYI = 1;
496 else if ((c > '1') && (c <= '9'))
497 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
498
499 return count;
500 }
501
502 static const struct file_operations cifsFYI_proc_fops = {
503 .owner = THIS_MODULE,
504 .open = cifsFYI_proc_open,
505 .read = seq_read,
506 .llseek = seq_lseek,
507 .release = single_release,
508 .write = cifsFYI_proc_write,
509 };
510
511 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
512 {
513 seq_printf(m, "%d\n", enable_oplocks);
514 return 0;
515 }
516
517 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
518 {
519 return single_open(file, cifs_oplock_proc_show, NULL);
520 }
521
522 static ssize_t cifs_oplock_proc_write(struct file *file,
523 const char __user *buffer, size_t count, loff_t *ppos)
524 {
525 char c;
526 int rc;
527
528 printk(KERN_WARNING "CIFS: The /proc/fs/cifs/OplockEnabled interface "
529 "will be removed in kernel version 3.4. Please migrate to "
530 "using the 'enable_oplocks' module parameter in cifs.ko.\n");
531 rc = get_user(c, buffer);
532 if (rc)
533 return rc;
534 if (c == '0' || c == 'n' || c == 'N')
535 enable_oplocks = false;
536 else if (c == '1' || c == 'y' || c == 'Y')
537 enable_oplocks = true;
538
539 return count;
540 }
541
542 static const struct file_operations cifs_oplock_proc_fops = {
543 .owner = THIS_MODULE,
544 .open = cifs_oplock_proc_open,
545 .read = seq_read,
546 .llseek = seq_lseek,
547 .release = single_release,
548 .write = cifs_oplock_proc_write,
549 };
550
551 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
552 {
553 seq_printf(m, "%d\n", linuxExtEnabled);
554 return 0;
555 }
556
557 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
558 {
559 return single_open(file, cifs_linux_ext_proc_show, NULL);
560 }
561
562 static ssize_t cifs_linux_ext_proc_write(struct file *file,
563 const char __user *buffer, size_t count, loff_t *ppos)
564 {
565 char c;
566 int rc;
567
568 rc = get_user(c, buffer);
569 if (rc)
570 return rc;
571 if (c == '0' || c == 'n' || c == 'N')
572 linuxExtEnabled = 0;
573 else if (c == '1' || c == 'y' || c == 'Y')
574 linuxExtEnabled = 1;
575
576 return count;
577 }
578
579 static const struct file_operations cifs_linux_ext_proc_fops = {
580 .owner = THIS_MODULE,
581 .open = cifs_linux_ext_proc_open,
582 .read = seq_read,
583 .llseek = seq_lseek,
584 .release = single_release,
585 .write = cifs_linux_ext_proc_write,
586 };
587
588 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
589 {
590 seq_printf(m, "%d\n", lookupCacheEnabled);
591 return 0;
592 }
593
594 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
595 {
596 return single_open(file, cifs_lookup_cache_proc_show, NULL);
597 }
598
599 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
600 const char __user *buffer, size_t count, loff_t *ppos)
601 {
602 char c;
603 int rc;
604
605 rc = get_user(c, buffer);
606 if (rc)
607 return rc;
608 if (c == '0' || c == 'n' || c == 'N')
609 lookupCacheEnabled = 0;
610 else if (c == '1' || c == 'y' || c == 'Y')
611 lookupCacheEnabled = 1;
612
613 return count;
614 }
615
616 static const struct file_operations cifs_lookup_cache_proc_fops = {
617 .owner = THIS_MODULE,
618 .open = cifs_lookup_cache_proc_open,
619 .read = seq_read,
620 .llseek = seq_lseek,
621 .release = single_release,
622 .write = cifs_lookup_cache_proc_write,
623 };
624
625 static int traceSMB_proc_show(struct seq_file *m, void *v)
626 {
627 seq_printf(m, "%d\n", traceSMB);
628 return 0;
629 }
630
631 static int traceSMB_proc_open(struct inode *inode, struct file *file)
632 {
633 return single_open(file, traceSMB_proc_show, NULL);
634 }
635
636 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
637 size_t count, loff_t *ppos)
638 {
639 char c;
640 int rc;
641
642 rc = get_user(c, buffer);
643 if (rc)
644 return rc;
645 if (c == '0' || c == 'n' || c == 'N')
646 traceSMB = 0;
647 else if (c == '1' || c == 'y' || c == 'Y')
648 traceSMB = 1;
649
650 return count;
651 }
652
653 static const struct file_operations traceSMB_proc_fops = {
654 .owner = THIS_MODULE,
655 .open = traceSMB_proc_open,
656 .read = seq_read,
657 .llseek = seq_lseek,
658 .release = single_release,
659 .write = traceSMB_proc_write,
660 };
661
662 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
663 {
664 seq_printf(m, "%d\n", multiuser_mount);
665 return 0;
666 }
667
668 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
669 {
670 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
671 }
672
673 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
674 const char __user *buffer, size_t count, loff_t *ppos)
675 {
676 char c;
677 int rc;
678 static bool warned;
679
680 rc = get_user(c, buffer);
681 if (rc)
682 return rc;
683 if (c == '0' || c == 'n' || c == 'N')
684 multiuser_mount = 0;
685 else if (c == '1' || c == 'y' || c == 'Y') {
686 multiuser_mount = 1;
687 if (!warned) {
688 warned = true;
689 printk(KERN_WARNING "CIFS VFS: The legacy multiuser "
690 "mount code is scheduled to be deprecated in "
691 "3.5. Please switch to using the multiuser "
692 "mount option.");
693 }
694 }
695
696 return count;
697 }
698
699 static const struct file_operations cifs_multiuser_mount_proc_fops = {
700 .owner = THIS_MODULE,
701 .open = cifs_multiuser_mount_proc_open,
702 .read = seq_read,
703 .llseek = seq_lseek,
704 .release = single_release,
705 .write = cifs_multiuser_mount_proc_write,
706 };
707
708 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
709 {
710 seq_printf(m, "0x%x\n", global_secflags);
711 return 0;
712 }
713
714 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
715 {
716 return single_open(file, cifs_security_flags_proc_show, NULL);
717 }
718
719 static ssize_t cifs_security_flags_proc_write(struct file *file,
720 const char __user *buffer, size_t count, loff_t *ppos)
721 {
722 unsigned int flags;
723 char flags_string[12];
724 char c;
725
726 if ((count < 1) || (count > 11))
727 return -EINVAL;
728
729 memset(flags_string, 0, 12);
730
731 if (copy_from_user(flags_string, buffer, count))
732 return -EFAULT;
733
734 if (count < 3) {
735 /* single char or single char followed by null */
736 c = flags_string[0];
737 if (c == '0' || c == 'n' || c == 'N') {
738 global_secflags = CIFSSEC_DEF; /* default */
739 return count;
740 } else if (c == '1' || c == 'y' || c == 'Y') {
741 global_secflags = CIFSSEC_MAX;
742 return count;
743 } else if (!isdigit(c)) {
744 cERROR(1, "invalid flag %c", c);
745 return -EINVAL;
746 }
747 }
748 /* else we have a number */
749
750 flags = simple_strtoul(flags_string, NULL, 0);
751
752 cFYI(1, "sec flags 0x%x", flags);
753
754 if (flags <= 0) {
755 cERROR(1, "invalid security flags %s", flags_string);
756 return -EINVAL;
757 }
758
759 if (flags & ~CIFSSEC_MASK) {
760 cERROR(1, "attempt to set unsupported security flags 0x%x",
761 flags & ~CIFSSEC_MASK);
762 return -EINVAL;
763 }
764 /* flags look ok - update the global security flags for cifs module */
765 global_secflags = flags;
766 if (global_secflags & CIFSSEC_MUST_SIGN) {
767 /* requiring signing implies signing is allowed */
768 global_secflags |= CIFSSEC_MAY_SIGN;
769 cFYI(1, "packet signing now required");
770 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
771 cFYI(1, "packet signing disabled");
772 }
773 /* BB should we turn on MAY flags for other MUST options? */
774 return count;
775 }
776
777 static const struct file_operations cifs_security_flags_proc_fops = {
778 .owner = THIS_MODULE,
779 .open = cifs_security_flags_proc_open,
780 .read = seq_read,
781 .llseek = seq_lseek,
782 .release = single_release,
783 .write = cifs_security_flags_proc_write,
784 };
785 #else
786 inline void cifs_proc_init(void)
787 {
788 }
789
790 inline void cifs_proc_clean(void)
791 {
792 }
793 #endif /* PROC_FS */
ubuntu-bionic-kernel mirror