4 * Copyright (C) International Business Machines Corp., 2000,2005
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
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>
30 #include "cifsproto.h"
31 #include "cifs_debug.h"
35 cifs_dump_mem(char *label, void *data, int length)
40 char buf[10], line[80];
42 printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
44 for (i = 0; i < length; i += 16) {
46 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
47 sprintf(buf, " %08x", intptr[i / 4 + j]);
52 for (j = 0; (j < 16) && (i + j < length); j++) {
53 buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
56 printk(KERN_DEBUG "%s\n", line);
60 #ifdef CONFIG_CIFS_DEBUG2
61 void cifs_dump_detail(void *buf)
63 struct smb_hdr *smb = (struct smb_hdr *)buf;
65 cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
66 smb->Command, smb->Status.CifsError,
67 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
68 cERROR(1, "smb buf %p len %d", smb, smbCalcSize(smb));
71 void cifs_dump_mids(struct TCP_Server_Info *server)
73 struct list_head *tmp;
74 struct mid_q_entry *mid_entry;
79 cERROR(1, "Dump pending requests:");
80 spin_lock(&GlobalMid_Lock);
81 list_for_each(tmp, &server->pending_mid_q) {
82 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
83 cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu",
85 le16_to_cpu(mid_entry->command),
87 mid_entry->callback_data,
89 #ifdef CONFIG_CIFS_STATS2
90 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
93 mid_entry->when_received,
96 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
98 if (mid_entry->resp_buf) {
99 cifs_dump_detail(mid_entry->resp_buf);
100 cifs_dump_mem("existing buf: ",
101 mid_entry->resp_buf, 62);
104 spin_unlock(&GlobalMid_Lock);
106 #endif /* CONFIG_CIFS_DEBUG2 */
108 #ifdef CONFIG_PROC_FS
109 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
111 struct list_head *tmp1, *tmp2, *tmp3;
112 struct mid_q_entry *mid_entry;
113 struct TCP_Server_Info *server;
114 struct cifs_ses *ses;
115 struct cifs_tcon *tcon;
120 "Display Internal CIFS Data Structures for Debugging\n"
121 "---------------------------------------------------\n");
122 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
123 seq_printf(m, "Features:");
124 #ifdef CONFIG_CIFS_DFS_UPCALL
125 seq_printf(m, " dfs");
127 #ifdef CONFIG_CIFS_FSCACHE
128 seq_printf(m, " fscache");
130 #ifdef CONFIG_CIFS_WEAK_PW_HASH
131 seq_printf(m, " lanman");
133 #ifdef CONFIG_CIFS_POSIX
134 seq_printf(m, " posix");
136 #ifdef CONFIG_CIFS_UPCALL
137 seq_printf(m, " spnego");
139 #ifdef CONFIG_CIFS_XATTR
140 seq_printf(m, " xattr");
142 #ifdef CONFIG_CIFS_ACL
143 seq_printf(m, " acl");
146 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
147 seq_printf(m, "Servers:");
150 spin_lock(&cifs_tcp_ses_lock);
151 list_for_each(tmp1, &cifs_tcp_ses_list) {
152 server = list_entry(tmp1, struct TCP_Server_Info,
155 list_for_each(tmp2, &server->smb_ses_list) {
156 ses = list_entry(tmp2, struct cifs_ses,
158 if ((ses->serverDomain == NULL) ||
159 (ses->serverOS == NULL) ||
160 (ses->serverNOS == NULL)) {
161 seq_printf(m, "\n%d) entry for %s not fully "
162 "displayed\n\t", i, ses->serverName);
165 "\n%d) Name: %s Domain: %s Uses: %d OS:"
166 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
167 " session status: %d\t",
168 i, ses->serverName, ses->serverDomain,
169 ses->ses_count, ses->serverOS, ses->serverNOS,
170 ses->capabilities, ses->status);
172 seq_printf(m, "TCP status: %d\n\tLocal Users To "
173 "Server: %d SecMode: 0x%x Req On Wire: %d",
174 server->tcpStatus, server->srv_count,
175 server->sec_mode, in_flight(server));
177 #ifdef CONFIG_CIFS_STATS2
178 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
179 atomic_read(&server->in_send),
180 atomic_read(&server->num_waiters));
183 seq_puts(m, "\n\tShares:");
185 list_for_each(tmp3, &ses->tcon_list) {
186 tcon = list_entry(tmp3, struct cifs_tcon,
189 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
190 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
191 tcon->treeName, tcon->tc_count);
192 if (tcon->nativeFileSystem) {
193 seq_printf(m, "Type: %s ",
194 tcon->nativeFileSystem);
196 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
197 "\nPathComponentMax: %d Status: 0x%d",
198 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
199 le32_to_cpu(tcon->fsAttrInfo.Attributes),
200 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
202 if (dev_type == FILE_DEVICE_DISK)
203 seq_puts(m, " type: DISK ");
204 else if (dev_type == FILE_DEVICE_CD_ROM)
205 seq_puts(m, " type: CDROM ");
207 seq_printf(m, " type: %d ", dev_type);
209 if (tcon->need_reconnect)
210 seq_puts(m, "\tDISCONNECTED ");
214 seq_puts(m, "\n\tMIDs:\n");
216 spin_lock(&GlobalMid_Lock);
217 list_for_each(tmp3, &server->pending_mid_q) {
218 mid_entry = list_entry(tmp3, struct mid_q_entry,
220 seq_printf(m, "\tState: %d com: %d pid:"
221 " %d cbdata: %p mid %llu\n",
222 mid_entry->mid_state,
223 le16_to_cpu(mid_entry->command),
225 mid_entry->callback_data,
228 spin_unlock(&GlobalMid_Lock);
231 spin_unlock(&cifs_tcp_ses_lock);
234 /* BB add code to dump additional info such as TCP session info now */
238 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
240 return single_open(file, cifs_debug_data_proc_show, NULL);
243 static const struct file_operations cifs_debug_data_proc_fops = {
244 .owner = THIS_MODULE,
245 .open = cifs_debug_data_proc_open,
248 .release = single_release,
251 #ifdef CONFIG_CIFS_STATS
252 static ssize_t cifs_stats_proc_write(struct file *file,
253 const char __user *buffer, size_t count, loff_t *ppos)
257 struct list_head *tmp1, *tmp2, *tmp3;
258 struct TCP_Server_Info *server;
259 struct cifs_ses *ses;
260 struct cifs_tcon *tcon;
262 rc = get_user(c, buffer);
266 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
267 #ifdef CONFIG_CIFS_STATS2
268 atomic_set(&totBufAllocCount, 0);
269 atomic_set(&totSmBufAllocCount, 0);
270 #endif /* CONFIG_CIFS_STATS2 */
271 spin_lock(&cifs_tcp_ses_lock);
272 list_for_each(tmp1, &cifs_tcp_ses_list) {
273 server = list_entry(tmp1, struct TCP_Server_Info,
275 list_for_each(tmp2, &server->smb_ses_list) {
276 ses = list_entry(tmp2, struct cifs_ses,
278 list_for_each(tmp3, &ses->tcon_list) {
279 tcon = list_entry(tmp3,
282 atomic_set(&tcon->num_smbs_sent, 0);
283 atomic_set(&tcon->num_writes, 0);
284 atomic_set(&tcon->num_reads, 0);
285 atomic_set(&tcon->num_oplock_brks, 0);
286 atomic_set(&tcon->num_opens, 0);
287 atomic_set(&tcon->num_posixopens, 0);
288 atomic_set(&tcon->num_posixmkdirs, 0);
289 atomic_set(&tcon->num_closes, 0);
290 atomic_set(&tcon->num_deletes, 0);
291 atomic_set(&tcon->num_mkdirs, 0);
292 atomic_set(&tcon->num_rmdirs, 0);
293 atomic_set(&tcon->num_renames, 0);
294 atomic_set(&tcon->num_t2renames, 0);
295 atomic_set(&tcon->num_ffirst, 0);
296 atomic_set(&tcon->num_fnext, 0);
297 atomic_set(&tcon->num_fclose, 0);
298 atomic_set(&tcon->num_hardlinks, 0);
299 atomic_set(&tcon->num_symlinks, 0);
300 atomic_set(&tcon->num_locks, 0);
304 spin_unlock(&cifs_tcp_ses_lock);
310 static int cifs_stats_proc_show(struct seq_file *m, void *v)
313 struct list_head *tmp1, *tmp2, *tmp3;
314 struct TCP_Server_Info *server;
315 struct cifs_ses *ses;
316 struct cifs_tcon *tcon;
319 "Resources in use\nCIFS Session: %d\n",
320 sesInfoAllocCount.counter);
321 seq_printf(m, "Share (unique mount targets): %d\n",
322 tconInfoAllocCount.counter);
323 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
324 bufAllocCount.counter,
325 cifs_min_rcv + tcpSesAllocCount.counter);
326 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
327 smBufAllocCount.counter, cifs_min_small);
328 #ifdef CONFIG_CIFS_STATS2
329 seq_printf(m, "Total Large %d Small %d Allocations\n",
330 atomic_read(&totBufAllocCount),
331 atomic_read(&totSmBufAllocCount));
332 #endif /* CONFIG_CIFS_STATS2 */
334 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
336 "\n%d session %d share reconnects\n",
337 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
340 "Total vfs operations: %d maximum at one time: %d\n",
341 GlobalCurrentXid, GlobalMaxActiveXid);
344 spin_lock(&cifs_tcp_ses_lock);
345 list_for_each(tmp1, &cifs_tcp_ses_list) {
346 server = list_entry(tmp1, struct TCP_Server_Info,
348 list_for_each(tmp2, &server->smb_ses_list) {
349 ses = list_entry(tmp2, struct cifs_ses,
351 list_for_each(tmp3, &ses->tcon_list) {
352 tcon = list_entry(tmp3,
356 seq_printf(m, "\n%d) %s", i, tcon->treeName);
357 if (tcon->need_reconnect)
358 seq_puts(m, "\tDISCONNECTED ");
359 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
360 atomic_read(&tcon->num_smbs_sent),
361 atomic_read(&tcon->num_oplock_brks));
362 seq_printf(m, "\nReads: %d Bytes: %lld",
363 atomic_read(&tcon->num_reads),
364 (long long)(tcon->bytes_read));
365 seq_printf(m, "\nWrites: %d Bytes: %lld",
366 atomic_read(&tcon->num_writes),
367 (long long)(tcon->bytes_written));
368 seq_printf(m, "\nFlushes: %d",
369 atomic_read(&tcon->num_flushes));
370 seq_printf(m, "\nLocks: %d HardLinks: %d "
372 atomic_read(&tcon->num_locks),
373 atomic_read(&tcon->num_hardlinks),
374 atomic_read(&tcon->num_symlinks));
375 seq_printf(m, "\nOpens: %d Closes: %d "
377 atomic_read(&tcon->num_opens),
378 atomic_read(&tcon->num_closes),
379 atomic_read(&tcon->num_deletes));
380 seq_printf(m, "\nPosix Opens: %d "
382 atomic_read(&tcon->num_posixopens),
383 atomic_read(&tcon->num_posixmkdirs));
384 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
385 atomic_read(&tcon->num_mkdirs),
386 atomic_read(&tcon->num_rmdirs));
387 seq_printf(m, "\nRenames: %d T2 Renames %d",
388 atomic_read(&tcon->num_renames),
389 atomic_read(&tcon->num_t2renames));
390 seq_printf(m, "\nFindFirst: %d FNext %d "
392 atomic_read(&tcon->num_ffirst),
393 atomic_read(&tcon->num_fnext),
394 atomic_read(&tcon->num_fclose));
398 spin_unlock(&cifs_tcp_ses_lock);
404 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
406 return single_open(file, cifs_stats_proc_show, NULL);
409 static const struct file_operations cifs_stats_proc_fops = {
410 .owner = THIS_MODULE,
411 .open = cifs_stats_proc_open,
414 .release = single_release,
415 .write = cifs_stats_proc_write,
419 static struct proc_dir_entry *proc_fs_cifs;
420 static const struct file_operations cifsFYI_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;
430 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
431 if (proc_fs_cifs == NULL)
434 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
436 #ifdef CONFIG_CIFS_STATS
437 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
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("LinuxExtensionsEnabled", 0, proc_fs_cifs,
442 &cifs_linux_ext_proc_fops);
443 proc_create("MultiuserMount", 0, proc_fs_cifs,
444 &cifs_multiuser_mount_proc_fops);
445 proc_create("SecurityFlags", 0, proc_fs_cifs,
446 &cifs_security_flags_proc_fops);
447 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
448 &cifs_lookup_cache_proc_fops);
452 cifs_proc_clean(void)
454 if (proc_fs_cifs == NULL)
457 remove_proc_entry("DebugData", proc_fs_cifs);
458 remove_proc_entry("cifsFYI", proc_fs_cifs);
459 remove_proc_entry("traceSMB", proc_fs_cifs);
460 #ifdef CONFIG_CIFS_STATS
461 remove_proc_entry("Stats", proc_fs_cifs);
463 remove_proc_entry("MultiuserMount", proc_fs_cifs);
464 remove_proc_entry("SecurityFlags", proc_fs_cifs);
465 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
466 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
467 remove_proc_entry("fs/cifs", NULL);
470 static int cifsFYI_proc_show(struct seq_file *m, void *v)
472 seq_printf(m, "%d\n", cifsFYI);
476 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
478 return single_open(file, cifsFYI_proc_show, NULL);
481 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
482 size_t count, loff_t *ppos)
487 rc = get_user(c, buffer);
490 if (c == '0' || c == 'n' || c == 'N')
492 else if (c == '1' || c == 'y' || c == 'Y')
494 else if ((c > '1') && (c <= '9'))
495 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
500 static const struct file_operations cifsFYI_proc_fops = {
501 .owner = THIS_MODULE,
502 .open = cifsFYI_proc_open,
505 .release = single_release,
506 .write = cifsFYI_proc_write,
509 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
511 seq_printf(m, "%d\n", linuxExtEnabled);
515 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
517 return single_open(file, cifs_linux_ext_proc_show, NULL);
520 static ssize_t cifs_linux_ext_proc_write(struct file *file,
521 const char __user *buffer, size_t count, loff_t *ppos)
526 rc = get_user(c, buffer);
529 if (c == '0' || c == 'n' || c == 'N')
531 else if (c == '1' || c == 'y' || c == 'Y')
537 static const struct file_operations cifs_linux_ext_proc_fops = {
538 .owner = THIS_MODULE,
539 .open = cifs_linux_ext_proc_open,
542 .release = single_release,
543 .write = cifs_linux_ext_proc_write,
546 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
548 seq_printf(m, "%d\n", lookupCacheEnabled);
552 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
554 return single_open(file, cifs_lookup_cache_proc_show, NULL);
557 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
558 const char __user *buffer, size_t count, loff_t *ppos)
563 rc = get_user(c, buffer);
566 if (c == '0' || c == 'n' || c == 'N')
567 lookupCacheEnabled = 0;
568 else if (c == '1' || c == 'y' || c == 'Y')
569 lookupCacheEnabled = 1;
574 static const struct file_operations cifs_lookup_cache_proc_fops = {
575 .owner = THIS_MODULE,
576 .open = cifs_lookup_cache_proc_open,
579 .release = single_release,
580 .write = cifs_lookup_cache_proc_write,
583 static int traceSMB_proc_show(struct seq_file *m, void *v)
585 seq_printf(m, "%d\n", traceSMB);
589 static int traceSMB_proc_open(struct inode *inode, struct file *file)
591 return single_open(file, traceSMB_proc_show, NULL);
594 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
595 size_t count, loff_t *ppos)
600 rc = get_user(c, buffer);
603 if (c == '0' || c == 'n' || c == 'N')
605 else if (c == '1' || c == 'y' || c == 'Y')
611 static const struct file_operations traceSMB_proc_fops = {
612 .owner = THIS_MODULE,
613 .open = traceSMB_proc_open,
616 .release = single_release,
617 .write = traceSMB_proc_write,
620 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
622 seq_printf(m, "%d\n", multiuser_mount);
626 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
628 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
631 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
632 const char __user *buffer, size_t count, loff_t *ppos)
638 rc = get_user(c, buffer);
641 if (c == '0' || c == 'n' || c == 'N')
643 else if (c == '1' || c == 'y' || c == 'Y') {
647 printk(KERN_WARNING "CIFS VFS: The legacy multiuser "
648 "mount code is scheduled to be deprecated in "
649 "3.5. Please switch to using the multiuser "
657 static const struct file_operations cifs_multiuser_mount_proc_fops = {
658 .owner = THIS_MODULE,
659 .open = cifs_multiuser_mount_proc_open,
662 .release = single_release,
663 .write = cifs_multiuser_mount_proc_write,
666 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
668 seq_printf(m, "0x%x\n", global_secflags);
672 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
674 return single_open(file, cifs_security_flags_proc_show, NULL);
677 static ssize_t cifs_security_flags_proc_write(struct file *file,
678 const char __user *buffer, size_t count, loff_t *ppos)
681 char flags_string[12];
684 if ((count < 1) || (count > 11))
687 memset(flags_string, 0, 12);
689 if (copy_from_user(flags_string, buffer, count))
693 /* single char or single char followed by null */
695 if (c == '0' || c == 'n' || c == 'N') {
696 global_secflags = CIFSSEC_DEF; /* default */
698 } else if (c == '1' || c == 'y' || c == 'Y') {
699 global_secflags = CIFSSEC_MAX;
701 } else if (!isdigit(c)) {
702 cERROR(1, "invalid flag %c", c);
706 /* else we have a number */
708 flags = simple_strtoul(flags_string, NULL, 0);
710 cFYI(1, "sec flags 0x%x", flags);
713 cERROR(1, "invalid security flags %s", flags_string);
717 if (flags & ~CIFSSEC_MASK) {
718 cERROR(1, "attempt to set unsupported security flags 0x%x",
719 flags & ~CIFSSEC_MASK);
722 /* flags look ok - update the global security flags for cifs module */
723 global_secflags = flags;
724 if (global_secflags & CIFSSEC_MUST_SIGN) {
725 /* requiring signing implies signing is allowed */
726 global_secflags |= CIFSSEC_MAY_SIGN;
727 cFYI(1, "packet signing now required");
728 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
729 cFYI(1, "packet signing disabled");
731 /* BB should we turn on MAY flags for other MUST options? */
735 static const struct file_operations cifs_security_flags_proc_fops = {
736 .owner = THIS_MODULE,
737 .open = cifs_security_flags_proc_open,
740 .release = single_release,
741 .write = cifs_security_flags_proc_write,
744 inline void cifs_proc_init(void)
748 inline void cifs_proc_clean(void)