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(struct smb_hdr *smb)
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)));
70 void cifs_dump_mids(struct TCP_Server_Info *server)
72 struct list_head *tmp;
73 struct mid_q_entry *mid_entry;
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);
83 cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
85 (int)mid_entry->command,
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,
97 mid_entry->multiEnd));
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);
105 spin_unlock(&GlobalMid_Lock);
107 #endif /* CONFIG_CIFS_DEBUG2 */
109 #ifdef CONFIG_PROC_FS
110 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
112 struct list_head *tmp;
113 struct list_head *tmp1;
114 struct mid_q_entry *mid_entry;
115 struct cifsSesInfo *ses;
116 struct cifsTconInfo *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, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
124 seq_printf(m, "Servers:");
127 read_lock(&GlobalSMBSeslock);
128 list_for_each(tmp, &GlobalSMBSessionList) {
130 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
131 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
132 (ses->serverNOS == NULL)) {
133 seq_printf(m, "\nentry for %s not fully "
134 "displayed\n\t", ses->serverName);
137 "\n%d) Name: %s Domain: %s Mounts: %d OS:"
138 " %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
139 " session status: %d\t",
140 i, ses->serverName, ses->serverDomain,
141 atomic_read(&ses->inUse),
142 ses->serverOS, ses->serverNOS,
143 ses->capabilities, ses->status);
146 seq_printf(m, "TCP status: %d\n\tLocal Users To "
147 "Server: %d SecMode: 0x%x Req On Wire: %d",
148 ses->server->tcpStatus,
149 atomic_read(&ses->server->socketUseCount),
150 ses->server->secMode,
151 atomic_read(&ses->server->inFlight));
153 #ifdef CONFIG_CIFS_STATS2
154 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
155 atomic_read(&ses->server->inSend),
156 atomic_read(&ses->server->num_waiters));
159 seq_puts(m, "\nMIDs:\n");
161 spin_lock(&GlobalMid_Lock);
162 list_for_each(tmp1, &ses->server->pending_mid_q) {
163 mid_entry = list_entry(tmp1, struct
168 "State: %d com: %d pid:"
169 " %d tsk: %p mid %d\n",
171 (int)mid_entry->command,
177 spin_unlock(&GlobalMid_Lock);
181 read_unlock(&GlobalSMBSeslock);
184 seq_puts(m, "Shares:");
187 read_lock(&GlobalSMBSeslock);
188 list_for_each(tmp, &GlobalTreeConnectionList) {
191 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
192 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
193 seq_printf(m, "\n%d) %s Uses: %d ", i,
194 tcon->treeName, atomic_read(&tcon->useCount));
195 if (tcon->nativeFileSystem) {
196 seq_printf(m, "Type: %s ",
197 tcon->nativeFileSystem);
199 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
200 "\nPathComponentMax: %d Status: %d",
201 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
202 le32_to_cpu(tcon->fsAttrInfo.Attributes),
203 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
205 if (dev_type == FILE_DEVICE_DISK)
206 seq_puts(m, " type: DISK ");
207 else if (dev_type == FILE_DEVICE_CD_ROM)
208 seq_puts(m, " type: CDROM ");
210 seq_printf(m, " type: %d ", dev_type);
212 if (tcon->tidStatus == CifsNeedReconnect)
213 seq_puts(m, "\tDISCONNECTED ");
215 read_unlock(&GlobalSMBSeslock);
219 /* BB add code to dump additional info such as TCP session info now */
223 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
225 return single_open(file, cifs_debug_data_proc_show, NULL);
228 static const struct file_operations cifs_debug_data_proc_fops = {
229 .owner = THIS_MODULE,
230 .open = cifs_debug_data_proc_open,
233 .release = single_release,
236 #ifdef CONFIG_CIFS_STATS
237 static ssize_t cifs_stats_proc_write(struct file *file,
238 const char __user *buffer, size_t count, loff_t *ppos)
242 struct list_head *tmp;
243 struct cifsTconInfo *tcon;
245 rc = get_user(c, buffer);
249 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
250 read_lock(&GlobalSMBSeslock);
251 #ifdef CONFIG_CIFS_STATS2
252 atomic_set(&totBufAllocCount, 0);
253 atomic_set(&totSmBufAllocCount, 0);
254 #endif /* CONFIG_CIFS_STATS2 */
255 list_for_each(tmp, &GlobalTreeConnectionList) {
256 tcon = list_entry(tmp, struct cifsTconInfo,
258 atomic_set(&tcon->num_smbs_sent, 0);
259 atomic_set(&tcon->num_writes, 0);
260 atomic_set(&tcon->num_reads, 0);
261 atomic_set(&tcon->num_oplock_brks, 0);
262 atomic_set(&tcon->num_opens, 0);
263 atomic_set(&tcon->num_closes, 0);
264 atomic_set(&tcon->num_deletes, 0);
265 atomic_set(&tcon->num_mkdirs, 0);
266 atomic_set(&tcon->num_rmdirs, 0);
267 atomic_set(&tcon->num_renames, 0);
268 atomic_set(&tcon->num_t2renames, 0);
269 atomic_set(&tcon->num_ffirst, 0);
270 atomic_set(&tcon->num_fnext, 0);
271 atomic_set(&tcon->num_fclose, 0);
272 atomic_set(&tcon->num_hardlinks, 0);
273 atomic_set(&tcon->num_symlinks, 0);
274 atomic_set(&tcon->num_locks, 0);
276 read_unlock(&GlobalSMBSeslock);
282 static int cifs_stats_proc_show(struct seq_file *m, void *v)
285 struct list_head *tmp;
286 struct cifsTconInfo *tcon;
289 "Resources in use\nCIFS Session: %d\n",
290 sesInfoAllocCount.counter);
291 seq_printf(m, "Share (unique mount targets): %d\n",
292 tconInfoAllocCount.counter);
293 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
294 bufAllocCount.counter,
295 cifs_min_rcv + tcpSesAllocCount.counter);
296 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
297 smBufAllocCount.counter, cifs_min_small);
298 #ifdef CONFIG_CIFS_STATS2
299 seq_printf(m, "Total Large %d Small %d Allocations\n",
300 atomic_read(&totBufAllocCount),
301 atomic_read(&totSmBufAllocCount));
302 #endif /* CONFIG_CIFS_STATS2 */
304 seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
306 "\n%d session %d share reconnects\n",
307 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
310 "Total vfs operations: %d maximum at one time: %d\n",
311 GlobalCurrentXid, GlobalMaxActiveXid);
314 read_lock(&GlobalSMBSeslock);
315 list_for_each(tmp, &GlobalTreeConnectionList) {
317 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
318 seq_printf(m, "\n%d) %s", i, tcon->treeName);
319 if (tcon->tidStatus == CifsNeedReconnect)
320 seq_puts(m, "\tDISCONNECTED ");
321 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
322 atomic_read(&tcon->num_smbs_sent),
323 atomic_read(&tcon->num_oplock_brks));
324 seq_printf(m, "\nReads: %d Bytes: %lld",
325 atomic_read(&tcon->num_reads),
326 (long long)(tcon->bytes_read));
327 seq_printf(m, "\nWrites: %d Bytes: %lld",
328 atomic_read(&tcon->num_writes),
329 (long long)(tcon->bytes_written));
331 "\nLocks: %d HardLinks: %d Symlinks: %d",
332 atomic_read(&tcon->num_locks),
333 atomic_read(&tcon->num_hardlinks),
334 atomic_read(&tcon->num_symlinks));
336 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
337 atomic_read(&tcon->num_opens),
338 atomic_read(&tcon->num_closes),
339 atomic_read(&tcon->num_deletes));
340 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
341 atomic_read(&tcon->num_mkdirs),
342 atomic_read(&tcon->num_rmdirs));
343 seq_printf(m, "\nRenames: %d T2 Renames %d",
344 atomic_read(&tcon->num_renames),
345 atomic_read(&tcon->num_t2renames));
346 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
347 atomic_read(&tcon->num_ffirst),
348 atomic_read(&tcon->num_fnext),
349 atomic_read(&tcon->num_fclose));
351 read_unlock(&GlobalSMBSeslock);
357 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
359 return single_open(file, cifs_stats_proc_show, NULL);
362 static const struct file_operations cifs_stats_proc_fops = {
363 .owner = THIS_MODULE,
364 .open = cifs_stats_proc_open,
367 .release = single_release,
368 .write = cifs_stats_proc_write,
372 static struct proc_dir_entry *proc_fs_cifs;
373 static const struct file_operations cifsFYI_proc_fops;
374 static const struct file_operations cifs_oplock_proc_fops;
375 static const struct file_operations cifs_lookup_cache_proc_fops;
376 static const struct file_operations traceSMB_proc_fops;
377 static const struct file_operations cifs_multiuser_mount_proc_fops;
378 static const struct file_operations cifs_security_flags_proc_fops;
379 static const struct file_operations cifs_experimental_proc_fops;
380 static const struct file_operations cifs_linux_ext_proc_fops;
385 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
386 if (proc_fs_cifs == NULL)
389 proc_fs_cifs->owner = THIS_MODULE;
390 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
392 #ifdef CONFIG_CIFS_STATS
393 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
395 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
396 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
397 proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
398 proc_create("Experimental", 0, proc_fs_cifs,
399 &cifs_experimental_proc_fops);
400 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
401 &cifs_linux_ext_proc_fops);
402 proc_create("MultiuserMount", 0, proc_fs_cifs,
403 &cifs_multiuser_mount_proc_fops);
404 proc_create("SecurityFlags", 0, proc_fs_cifs,
405 &cifs_security_flags_proc_fops);
406 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
407 &cifs_lookup_cache_proc_fops);
411 cifs_proc_clean(void)
413 if (proc_fs_cifs == NULL)
416 remove_proc_entry("DebugData", proc_fs_cifs);
417 remove_proc_entry("cifsFYI", proc_fs_cifs);
418 remove_proc_entry("traceSMB", proc_fs_cifs);
419 #ifdef CONFIG_CIFS_STATS
420 remove_proc_entry("Stats", proc_fs_cifs);
422 remove_proc_entry("MultiuserMount", proc_fs_cifs);
423 remove_proc_entry("OplockEnabled", proc_fs_cifs);
424 remove_proc_entry("SecurityFlags", proc_fs_cifs);
425 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
426 remove_proc_entry("Experimental", proc_fs_cifs);
427 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
428 remove_proc_entry("fs/cifs", NULL);
431 static int cifsFYI_proc_show(struct seq_file *m, void *v)
433 seq_printf(m, "%d\n", cifsFYI);
437 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
439 return single_open(file, cifsFYI_proc_show, NULL);
442 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
443 size_t count, loff_t *ppos)
448 rc = get_user(c, buffer);
451 if (c == '0' || c == 'n' || c == 'N')
453 else if (c == '1' || c == 'y' || c == 'Y')
455 else if ((c > '1') && (c <= '9'))
456 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
461 static const struct file_operations cifsFYI_proc_fops = {
462 .owner = THIS_MODULE,
463 .open = cifsFYI_proc_open,
466 .release = single_release,
467 .write = cifsFYI_proc_write,
470 static int cifs_oplock_proc_show(struct seq_file *m, void *v)
472 seq_printf(m, "%d\n", oplockEnabled);
476 static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
478 return single_open(file, cifs_oplock_proc_show, NULL);
481 static ssize_t cifs_oplock_proc_write(struct file *file,
482 const char __user *buffer, 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')
498 static const struct file_operations cifs_oplock_proc_fops = {
499 .owner = THIS_MODULE,
500 .open = cifs_oplock_proc_open,
503 .release = single_release,
504 .write = cifs_oplock_proc_write,
507 static int cifs_experimental_proc_show(struct seq_file *m, void *v)
509 seq_printf(m, "%d\n", experimEnabled);
513 static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
515 return single_open(file, cifs_experimental_proc_show, NULL);
518 static ssize_t cifs_experimental_proc_write(struct file *file,
519 const char __user *buffer, size_t count, loff_t *ppos)
524 rc = get_user(c, buffer);
527 if (c == '0' || c == 'n' || c == 'N')
529 else if (c == '1' || c == 'y' || c == 'Y')
537 static const struct file_operations cifs_experimental_proc_fops = {
538 .owner = THIS_MODULE,
539 .open = cifs_experimental_proc_open,
542 .release = single_release,
543 .write = cifs_experimental_proc_write,
546 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
548 seq_printf(m, "%d\n", linuxExtEnabled);
552 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
554 return single_open(file, cifs_linux_ext_proc_show, NULL);
557 static ssize_t cifs_linux_ext_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')
568 else if (c == '1' || c == 'y' || c == 'Y')
574 static const struct file_operations cifs_linux_ext_proc_fops = {
575 .owner = THIS_MODULE,
576 .open = cifs_linux_ext_proc_open,
579 .release = single_release,
580 .write = cifs_linux_ext_proc_write,
583 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
585 seq_printf(m, "%d\n", lookupCacheEnabled);
589 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
591 return single_open(file, cifs_lookup_cache_proc_show, NULL);
594 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
595 const char __user *buffer, size_t count, loff_t *ppos)
600 rc = get_user(c, buffer);
603 if (c == '0' || c == 'n' || c == 'N')
604 lookupCacheEnabled = 0;
605 else if (c == '1' || c == 'y' || c == 'Y')
606 lookupCacheEnabled = 1;
611 static const struct file_operations cifs_lookup_cache_proc_fops = {
612 .owner = THIS_MODULE,
613 .open = cifs_lookup_cache_proc_open,
616 .release = single_release,
617 .write = cifs_lookup_cache_proc_write,
620 static int traceSMB_proc_show(struct seq_file *m, void *v)
622 seq_printf(m, "%d\n", traceSMB);
626 static int traceSMB_proc_open(struct inode *inode, struct file *file)
628 return single_open(file, traceSMB_proc_show, NULL);
631 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
632 size_t count, loff_t *ppos)
637 rc = get_user(c, buffer);
640 if (c == '0' || c == 'n' || c == 'N')
642 else if (c == '1' || c == 'y' || c == 'Y')
648 static const struct file_operations traceSMB_proc_fops = {
649 .owner = THIS_MODULE,
650 .open = traceSMB_proc_open,
653 .release = single_release,
654 .write = traceSMB_proc_write,
657 static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
659 seq_printf(m, "%d\n", multiuser_mount);
663 static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
665 return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
668 static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
669 const char __user *buffer, size_t count, loff_t *ppos)
674 rc = get_user(c, buffer);
677 if (c == '0' || c == 'n' || c == 'N')
679 else if (c == '1' || c == 'y' || c == 'Y')
685 static const struct file_operations cifs_multiuser_mount_proc_fops = {
686 .owner = THIS_MODULE,
687 .open = cifs_multiuser_mount_proc_open,
690 .release = single_release,
691 .write = cifs_multiuser_mount_proc_write,
694 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
696 seq_printf(m, "0x%x\n", extended_security);
700 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
702 return single_open(file, cifs_security_flags_proc_show, NULL);
705 static ssize_t cifs_security_flags_proc_write(struct file *file,
706 const char __user *buffer, size_t count, loff_t *ppos)
709 char flags_string[12];
712 if ((count < 1) || (count > 11))
715 memset(flags_string, 0, 12);
717 if (copy_from_user(flags_string, buffer, count))
721 /* single char or single char followed by null */
723 if (c == '0' || c == 'n' || c == 'N') {
724 extended_security = CIFSSEC_DEF; /* default */
726 } else if (c == '1' || c == 'y' || c == 'Y') {
727 extended_security = CIFSSEC_MAX;
729 } else if (!isdigit(c)) {
730 cERROR(1, ("invalid flag %c", c));
734 /* else we have a number */
736 flags = simple_strtoul(flags_string, NULL, 0);
738 cFYI(1, ("sec flags 0x%x", flags));
741 cERROR(1, ("invalid security flags %s", flags_string));
745 if (flags & ~CIFSSEC_MASK) {
746 cERROR(1, ("attempt to set unsupported security flags 0x%x",
747 flags & ~CIFSSEC_MASK));
750 /* flags look ok - update the global security flags for cifs module */
751 extended_security = flags;
752 if (extended_security & CIFSSEC_MUST_SIGN) {
753 /* requiring signing implies signing is allowed */
754 extended_security |= CIFSSEC_MAY_SIGN;
755 cFYI(1, ("packet signing now required"));
756 } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
757 cFYI(1, ("packet signing disabled"));
759 /* BB should we turn on MAY flags for other MUST options? */
763 static const struct file_operations cifs_security_flags_proc_fops = {
764 .owner = THIS_MODULE,
765 .open = cifs_security_flags_proc_open,
768 .release = single_release,
769 .write = cifs_security_flags_proc_write,
772 inline void cifs_proc_init(void)
776 inline void cifs_proc_clean(void)