[PATCH] cifs: Do not interpret oplock break responses as responses to an unrelated...
[linux-2.6/x86.git] / fs / cifs / cifs_debug.c
blobefa099165b22ea5d52a2d8c454cbbaf201596083
1 /*
2 * fs/cifs_debug.c
4 * Copyright (C) International Business Machines Corp., 2000,2003
6 * Modified by Steve French (sfrench@us.ibm.com)
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.
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.
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
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"
34 void
35 cifs_dump_mem(char *label, void *data, int length)
37 int i, j;
38 int *intptr = data;
39 char *charptr = data;
40 char buf[10], line[80];
42 printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\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);
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);
56 printk(KERN_DEBUG "%s\n", line);
60 #ifdef CONFIG_PROC_FS
61 static int
62 cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
63 int count, int *eof, void *data)
65 struct list_head *tmp;
66 struct list_head *tmp1;
67 struct mid_q_entry * mid_entry;
68 struct cifsSesInfo *ses;
69 struct cifsTconInfo *tcon;
70 int i;
71 int length = 0;
72 char * original_buf = buf;
74 *beginBuffer = buf + offset;
77 length =
78 sprintf(buf,
79 "Display Internal CIFS Data Structures for Debugging\n"
80 "---------------------------------------------------\n");
81 buf += length;
82 length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
83 buf += length;
84 length = sprintf(buf, "Servers:");
85 buf += length;
87 i = 0;
88 read_lock(&GlobalSMBSeslock);
89 list_for_each(tmp, &GlobalSMBSessionList) {
90 i++;
91 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
92 length =
93 sprintf(buf,
94 "\n%d) Name: %s Domain: %s Mounts: %d ServerOS: %s \n\tServerNOS: %s\tCapabilities: 0x%x\n\tSMB session status: %d\t",
95 i, ses->serverName, ses->serverDomain, atomic_read(&ses->inUse),
96 ses->serverOS, ses->serverNOS, ses->capabilities,ses->status);
97 buf += length;
98 if(ses->server) {
99 buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req Active: %d",
100 ses->server->tcpStatus,
101 atomic_read(&ses->server->socketUseCount),
102 ses->server->secMode,
103 atomic_read(&ses->server->inFlight));
105 length = sprintf(buf, "\nMIDs:\n");
106 buf += length;
108 spin_lock(&GlobalMid_Lock);
109 list_for_each(tmp1, &ses->server->pending_mid_q) {
110 mid_entry = list_entry(tmp1, struct
111 mid_q_entry,
112 qhead);
113 if(mid_entry) {
114 length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
115 mid_entry->midState,
116 (int)mid_entry->command,
117 mid_entry->pid,
118 mid_entry->tsk,
119 mid_entry->mid);
120 buf += length;
123 spin_unlock(&GlobalMid_Lock);
127 read_unlock(&GlobalSMBSeslock);
128 sprintf(buf, "\n");
129 buf++;
131 length = sprintf(buf, "Shares:");
132 buf += length;
134 i = 0;
135 read_lock(&GlobalSMBSeslock);
136 list_for_each(tmp, &GlobalTreeConnectionList) {
137 __u32 dev_type;
138 i++;
139 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
140 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
141 length =
142 sprintf(buf,
143 "\n%d) %s Uses: %d Type: %s Characteristics: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
144 i, tcon->treeName,
145 atomic_read(&tcon->useCount),
146 tcon->nativeFileSystem,
147 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
148 le32_to_cpu(tcon->fsAttrInfo.Attributes),
149 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
150 tcon->tidStatus);
151 buf += length;
152 if (dev_type == FILE_DEVICE_DISK)
153 length = sprintf(buf, " type: DISK ");
154 else if (dev_type == FILE_DEVICE_CD_ROM)
155 length = sprintf(buf, " type: CDROM ");
156 else
157 length =
158 sprintf(buf, " type: %d ", dev_type);
159 buf += length;
160 if(tcon->tidStatus == CifsNeedReconnect) {
161 buf += sprintf(buf, "\tDISCONNECTED ");
162 length += 14;
165 read_unlock(&GlobalSMBSeslock);
167 length = sprintf(buf, "\n");
168 buf += length;
170 /* BB add code to dump additional info such as TCP session info now */
171 /* Now calculate total size of returned data */
172 length = buf - original_buf;
174 if(offset + count >= length)
175 *eof = 1;
176 if(length < offset) {
177 *eof = 1;
178 return 0;
179 } else {
180 length = length - offset;
182 if (length > count)
183 length = count;
185 return length;
188 #ifdef CONFIG_CIFS_STATS
189 static int
190 cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
191 int count, int *eof, void *data)
193 int item_length,i,length;
194 struct list_head *tmp;
195 struct cifsTconInfo *tcon;
197 *beginBuffer = buf + offset;
199 length = sprintf(buf,
200 "Resources in use\nCIFS Session: %d\n",
201 sesInfoAllocCount.counter);
202 buf += length;
203 item_length =
204 sprintf(buf,"Share (unique mount targets): %d\n",
205 tconInfoAllocCount.counter);
206 length += item_length;
207 buf += item_length;
208 item_length =
209 sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
210 bufAllocCount.counter,cifs_min_rcv + tcpSesAllocCount.counter);
211 length += item_length;
212 buf += item_length;
213 item_length =
214 sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
215 smBufAllocCount.counter,cifs_min_small);
216 length += item_length;
217 buf += item_length;
218 item_length =
219 sprintf(buf,"Operations (MIDs): %d\n",
220 midCount.counter);
221 length += item_length;
222 buf += item_length;
223 item_length = sprintf(buf,
224 "\n%d session %d share reconnects\n",
225 tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
226 length += item_length;
227 buf += item_length;
229 item_length = sprintf(buf,
230 "Total vfs operations: %d maximum at one time: %d\n",
231 GlobalCurrentXid,GlobalMaxActiveXid);
232 length += item_length;
233 buf += item_length;
235 i = 0;
236 read_lock(&GlobalSMBSeslock);
237 list_for_each(tmp, &GlobalTreeConnectionList) {
238 i++;
239 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
240 item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
241 buf += item_length;
242 length += item_length;
243 if(tcon->tidStatus == CifsNeedReconnect) {
244 buf += sprintf(buf, "\tDISCONNECTED ");
245 length += 14;
247 item_length = sprintf(buf,"\nSMBs: %d Oplock Breaks: %d",
248 atomic_read(&tcon->num_smbs_sent),
249 atomic_read(&tcon->num_oplock_brks));
250 buf += item_length;
251 length += item_length;
252 item_length = sprintf(buf,"\nReads: %d Bytes %lld",
253 atomic_read(&tcon->num_reads),
254 (long long)(tcon->bytes_read));
255 buf += item_length;
256 length += item_length;
257 item_length = sprintf(buf,"\nWrites: %d Bytes: %lld",
258 atomic_read(&tcon->num_writes),
259 (long long)(tcon->bytes_written));
260 buf += item_length;
261 length += item_length;
262 item_length = sprintf(buf,
263 "\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
264 atomic_read(&tcon->num_opens),
265 atomic_read(&tcon->num_deletes),
266 atomic_read(&tcon->num_mkdirs),
267 atomic_read(&tcon->num_rmdirs));
268 buf += item_length;
269 length += item_length;
270 item_length = sprintf(buf,
271 "\nRenames: %d T2 Renames %d",
272 atomic_read(&tcon->num_renames),
273 atomic_read(&tcon->num_t2renames));
274 buf += item_length;
275 length += item_length;
277 read_unlock(&GlobalSMBSeslock);
279 buf += sprintf(buf,"\n");
280 length++;
282 if(offset + count >= length)
283 *eof = 1;
284 if(length < offset) {
285 *eof = 1;
286 return 0;
287 } else {
288 length = length - offset;
290 if (length > count)
291 length = count;
293 return length;
295 #endif
297 static struct proc_dir_entry *proc_fs_cifs;
298 read_proc_t cifs_txanchor_read;
299 static read_proc_t cifsFYI_read;
300 static write_proc_t cifsFYI_write;
301 static read_proc_t oplockEnabled_read;
302 static write_proc_t oplockEnabled_write;
303 static read_proc_t lookupFlag_read;
304 static write_proc_t lookupFlag_write;
305 static read_proc_t traceSMB_read;
306 static write_proc_t traceSMB_write;
307 static read_proc_t multiuser_mount_read;
308 static write_proc_t multiuser_mount_write;
309 static read_proc_t extended_security_read;
310 static write_proc_t extended_security_write;
311 static read_proc_t ntlmv2_enabled_read;
312 static write_proc_t ntlmv2_enabled_write;
313 static read_proc_t packet_signing_enabled_read;
314 static write_proc_t packet_signing_enabled_write;
315 static read_proc_t quotaEnabled_read;
316 static write_proc_t quotaEnabled_write;
317 static read_proc_t linuxExtensionsEnabled_read;
318 static write_proc_t linuxExtensionsEnabled_write;
320 void
321 cifs_proc_init(void)
323 struct proc_dir_entry *pde;
325 proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
326 if (proc_fs_cifs == NULL)
327 return;
329 proc_fs_cifs->owner = THIS_MODULE;
330 create_proc_read_entry("DebugData", 0, proc_fs_cifs,
331 cifs_debug_data_read, NULL);
333 #ifdef CONFIG_CIFS_STATS
334 create_proc_read_entry("Stats", 0, proc_fs_cifs,
335 cifs_stats_read, NULL);
336 #endif
337 pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
338 cifsFYI_read, NULL);
339 if (pde)
340 pde->write_proc = cifsFYI_write;
342 pde =
343 create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
344 traceSMB_read, NULL);
345 if (pde)
346 pde->write_proc = traceSMB_write;
348 pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
349 oplockEnabled_read, NULL);
350 if (pde)
351 pde->write_proc = oplockEnabled_write;
353 pde = create_proc_read_entry("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
354 quotaEnabled_read, NULL);
355 if (pde)
356 pde->write_proc = quotaEnabled_write;
358 pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
359 linuxExtensionsEnabled_read, NULL);
360 if (pde)
361 pde->write_proc = linuxExtensionsEnabled_write;
363 pde =
364 create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
365 multiuser_mount_read, NULL);
366 if (pde)
367 pde->write_proc = multiuser_mount_write;
369 pde =
370 create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
371 extended_security_read, NULL);
372 if (pde)
373 pde->write_proc = extended_security_write;
375 pde =
376 create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
377 lookupFlag_read, NULL);
378 if (pde)
379 pde->write_proc = lookupFlag_write;
381 pde =
382 create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
383 ntlmv2_enabled_read, NULL);
384 if (pde)
385 pde->write_proc = ntlmv2_enabled_write;
387 pde =
388 create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
389 packet_signing_enabled_read, NULL);
390 if (pde)
391 pde->write_proc = packet_signing_enabled_write;
394 void
395 cifs_proc_clean(void)
397 if (proc_fs_cifs == NULL)
398 return;
400 remove_proc_entry("DebugData", proc_fs_cifs);
401 remove_proc_entry("cifsFYI", proc_fs_cifs);
402 remove_proc_entry("traceSMB", proc_fs_cifs);
403 #ifdef CONFIG_CIFS_STATS
404 remove_proc_entry("Stats", proc_fs_cifs);
405 #endif
406 remove_proc_entry("MultiuserMount", proc_fs_cifs);
407 remove_proc_entry("OplockEnabled", proc_fs_cifs);
408 remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
409 remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
410 remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
411 remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
412 remove_proc_entry("ReenableOldCifsReaddirCode",proc_fs_cifs);
413 remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
414 remove_proc_entry("cifs", proc_root_fs);
417 static int
418 cifsFYI_read(char *page, char **start, off_t off, int count,
419 int *eof, void *data)
421 int len;
423 len = sprintf(page, "%d\n", cifsFYI);
425 len -= off;
426 *start = page + off;
428 if (len > count)
429 len = count;
430 else
431 *eof = 1;
433 if (len < 0)
434 len = 0;
436 return len;
438 static int
439 cifsFYI_write(struct file *file, const char __user *buffer,
440 unsigned long count, void *data)
442 char c;
443 int rc;
445 rc = get_user(c, buffer);
446 if (rc)
447 return rc;
448 if (c == '0' || c == 'n' || c == 'N')
449 cifsFYI = 0;
450 else if (c == '1' || c == 'y' || c == 'Y')
451 cifsFYI = 1;
453 return count;
456 static int
457 oplockEnabled_read(char *page, char **start, off_t off,
458 int count, int *eof, void *data)
460 int len;
462 len = sprintf(page, "%d\n", oplockEnabled);
464 len -= off;
465 *start = page + off;
467 if (len > count)
468 len = count;
469 else
470 *eof = 1;
472 if (len < 0)
473 len = 0;
475 return len;
477 static int
478 oplockEnabled_write(struct file *file, const char __user *buffer,
479 unsigned long count, void *data)
481 char c;
482 int rc;
484 rc = get_user(c, buffer);
485 if (rc)
486 return rc;
487 if (c == '0' || c == 'n' || c == 'N')
488 oplockEnabled = 0;
489 else if (c == '1' || c == 'y' || c == 'Y')
490 oplockEnabled = 1;
492 return count;
495 static int
496 quotaEnabled_read(char *page, char **start, off_t off,
497 int count, int *eof, void *data)
499 int len;
501 len = sprintf(page, "%d\n", experimEnabled);
502 /* could also check if quotas are enabled in kernel
503 as a whole first */
504 len -= off;
505 *start = page + off;
507 if (len > count)
508 len = count;
509 else
510 *eof = 1;
512 if (len < 0)
513 len = 0;
515 return len;
517 static int
518 quotaEnabled_write(struct file *file, const char __user *buffer,
519 unsigned long count, void *data)
521 char c;
522 int rc;
524 rc = get_user(c, buffer);
525 if (rc)
526 return rc;
527 if (c == '0' || c == 'n' || c == 'N')
528 experimEnabled = 0;
529 else if (c == '1' || c == 'y' || c == 'Y')
530 experimEnabled = 1;
532 return count;
535 static int
536 linuxExtensionsEnabled_read(char *page, char **start, off_t off,
537 int count, int *eof, void *data)
539 int len;
541 len = sprintf(page, "%d\n", linuxExtEnabled);
542 /* could also check if quotas are enabled in kernel
543 as a whole first */
544 len -= off;
545 *start = page + off;
547 if (len > count)
548 len = count;
549 else
550 *eof = 1;
552 if (len < 0)
553 len = 0;
555 return len;
557 static int
558 linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
559 unsigned long count, void *data)
561 char c;
562 int rc;
564 rc = get_user(c, buffer);
565 if (rc)
566 return rc;
567 if (c == '0' || c == 'n' || c == 'N')
568 linuxExtEnabled = 0;
569 else if (c == '1' || c == 'y' || c == 'Y')
570 linuxExtEnabled = 1;
572 return count;
576 static int
577 lookupFlag_read(char *page, char **start, off_t off,
578 int count, int *eof, void *data)
580 int len;
582 len = sprintf(page, "%d\n", lookupCacheEnabled);
584 len -= off;
585 *start = page + off;
587 if (len > count)
588 len = count;
589 else
590 *eof = 1;
592 if (len < 0)
593 len = 0;
595 return len;
597 static int
598 lookupFlag_write(struct file *file, const char __user *buffer,
599 unsigned long count, void *data)
601 char c;
602 int rc;
604 rc = get_user(c, buffer);
605 if (rc)
606 return rc;
607 if (c == '0' || c == 'n' || c == 'N')
608 lookupCacheEnabled = 0;
609 else if (c == '1' || c == 'y' || c == 'Y')
610 lookupCacheEnabled = 1;
612 return count;
614 static int
615 traceSMB_read(char *page, char **start, off_t off, int count,
616 int *eof, void *data)
618 int len;
620 len = sprintf(page, "%d\n", traceSMB);
622 len -= off;
623 *start = page + off;
625 if (len > count)
626 len = count;
627 else
628 *eof = 1;
630 if (len < 0)
631 len = 0;
633 return len;
635 static int
636 traceSMB_write(struct file *file, const char __user *buffer,
637 unsigned long count, void *data)
639 char c;
640 int rc;
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;
650 return count;
653 static int
654 multiuser_mount_read(char *page, char **start, off_t off,
655 int count, int *eof, void *data)
657 int len;
659 len = sprintf(page, "%d\n", multiuser_mount);
661 len -= off;
662 *start = page + off;
664 if (len > count)
665 len = count;
666 else
667 *eof = 1;
669 if (len < 0)
670 len = 0;
672 return len;
674 static int
675 multiuser_mount_write(struct file *file, const char __user *buffer,
676 unsigned long count, void *data)
678 char c;
679 int rc;
681 rc = get_user(c, buffer);
682 if (rc)
683 return rc;
684 if (c == '0' || c == 'n' || c == 'N')
685 multiuser_mount = 0;
686 else if (c == '1' || c == 'y' || c == 'Y')
687 multiuser_mount = 1;
689 return count;
692 static int
693 extended_security_read(char *page, char **start, off_t off,
694 int count, int *eof, void *data)
696 int len;
698 len = sprintf(page, "%d\n", extended_security);
700 len -= off;
701 *start = page + off;
703 if (len > count)
704 len = count;
705 else
706 *eof = 1;
708 if (len < 0)
709 len = 0;
711 return len;
713 static int
714 extended_security_write(struct file *file, const char __user *buffer,
715 unsigned long count, void *data)
717 char c;
718 int rc;
720 rc = get_user(c, buffer);
721 if (rc)
722 return rc;
723 if (c == '0' || c == 'n' || c == 'N')
724 extended_security = 0;
725 else if (c == '1' || c == 'y' || c == 'Y')
726 extended_security = 1;
728 return count;
731 static int
732 ntlmv2_enabled_read(char *page, char **start, off_t off,
733 int count, int *eof, void *data)
735 int len;
737 len = sprintf(page, "%d\n", ntlmv2_support);
739 len -= off;
740 *start = page + off;
742 if (len > count)
743 len = count;
744 else
745 *eof = 1;
747 if (len < 0)
748 len = 0;
750 return len;
752 static int
753 ntlmv2_enabled_write(struct file *file, const char __user *buffer,
754 unsigned long count, void *data)
756 char c;
757 int rc;
759 rc = get_user(c, buffer);
760 if (rc)
761 return rc;
762 if (c == '0' || c == 'n' || c == 'N')
763 ntlmv2_support = 0;
764 else if (c == '1' || c == 'y' || c == 'Y')
765 ntlmv2_support = 1;
767 return count;
770 static int
771 packet_signing_enabled_read(char *page, char **start, off_t off,
772 int count, int *eof, void *data)
774 int len;
776 len = sprintf(page, "%d\n", sign_CIFS_PDUs);
778 len -= off;
779 *start = page + off;
781 if (len > count)
782 len = count;
783 else
784 *eof = 1;
786 if (len < 0)
787 len = 0;
789 return len;
791 static int
792 packet_signing_enabled_write(struct file *file, const char __user *buffer,
793 unsigned long count, void *data)
795 char c;
796 int rc;
798 rc = get_user(c, buffer);
799 if (rc)
800 return rc;
801 if (c == '0' || c == 'n' || c == 'N')
802 sign_CIFS_PDUs = 0;
803 else if (c == '1' || c == 'y' || c == 'Y')
804 sign_CIFS_PDUs = 1;
805 else if (c == '2')
806 sign_CIFS_PDUs = 2;
808 return count;
812 #endif