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_DEBUG
61 void cifs_vfs_err(const char *fmt, ...)
71 printk(KERN_ERR "CIFS VFS: %pV", &vaf);
77 void cifs_dump_detail(void *buf)
79 #ifdef CONFIG_CIFS_DEBUG2
80 struct smb_hdr *smb = (struct smb_hdr *)buf;
82 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
83 smb->Command, smb->Status.CifsError,
84 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
85 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smbCalcSize(smb));
86 #endif /* CONFIG_CIFS_DEBUG2 */
89 void cifs_dump_mids(struct TCP_Server_Info *server)
91 #ifdef CONFIG_CIFS_DEBUG2
92 struct list_head *tmp;
93 struct mid_q_entry *mid_entry;
98 cifs_dbg(VFS, "Dump pending requests:\n");
99 spin_lock(&GlobalMid_Lock);
100 list_for_each(tmp, &server->pending_mid_q) {
101 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
102 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
103 mid_entry->mid_state,
104 le16_to_cpu(mid_entry->command),
106 mid_entry->callback_data,
108 #ifdef CONFIG_CIFS_STATS2
109 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
110 mid_entry->large_buf,
112 mid_entry->when_received,
115 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
116 mid_entry->multiRsp, mid_entry->multiEnd);
117 if (mid_entry->resp_buf) {
118 cifs_dump_detail(mid_entry->resp_buf);
119 cifs_dump_mem("existing buf: ",
120 mid_entry->resp_buf, 62);
123 spin_unlock(&GlobalMid_Lock);
124 #endif /* CONFIG_CIFS_DEBUG2 */
127 #ifdef CONFIG_PROC_FS
128 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
130 struct list_head *tmp1, *tmp2, *tmp3;
131 struct mid_q_entry *mid_entry;
132 struct TCP_Server_Info *server;
133 struct cifs_ses *ses;
134 struct cifs_tcon *tcon;
139 "Display Internal CIFS Data Structures for Debugging\n"
140 "---------------------------------------------------\n");
141 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
142 seq_printf(m, "Features:");
143 #ifdef CONFIG_CIFS_DFS_UPCALL
144 seq_printf(m, " dfs");
146 #ifdef CONFIG_CIFS_FSCACHE
147 seq_printf(m, " fscache");
149 #ifdef CONFIG_CIFS_WEAK_PW_HASH
150 seq_printf(m, " lanman");
152 #ifdef CONFIG_CIFS_POSIX
153 seq_printf(m, " posix");
155 #ifdef CONFIG_CIFS_UPCALL
156 seq_printf(m, " spnego");
158 #ifdef CONFIG_CIFS_XATTR
159 seq_printf(m, " xattr");
161 #ifdef CONFIG_CIFS_ACL
162 seq_printf(m, " acl");
165 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
166 seq_printf(m, "Servers:");
169 spin_lock(&cifs_tcp_ses_lock);
170 list_for_each(tmp1, &cifs_tcp_ses_list) {
171 server = list_entry(tmp1, struct TCP_Server_Info,
174 list_for_each(tmp2, &server->smb_ses_list) {
175 ses = list_entry(tmp2, struct cifs_ses,
177 if ((ses->serverDomain == NULL) ||
178 (ses->serverOS == NULL) ||
179 (ses->serverNOS == NULL)) {
180 seq_printf(m, "\n%d) entry for %s not fully "
181 "displayed\n\t", i, ses->serverName);
184 "\n%d) Name: %s Domain: %s Uses: %d OS:"
185 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
186 " session status: %d\t",
187 i, ses->serverName, ses->serverDomain,
188 ses->ses_count, ses->serverOS, ses->serverNOS,
189 ses->capabilities, ses->status);
191 seq_printf(m, "TCP status: %d\n\tLocal Users To "
192 "Server: %d SecMode: 0x%x Req On Wire: %d",
193 server->tcpStatus, server->srv_count,
194 server->sec_mode, in_flight(server));
196 #ifdef CONFIG_CIFS_STATS2
197 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
198 atomic_read(&server->in_send),
199 atomic_read(&server->num_waiters));
202 seq_puts(m, "\n\tShares:");
204 list_for_each(tmp3, &ses->tcon_list) {
205 tcon = list_entry(tmp3, struct cifs_tcon,
208 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
209 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
210 tcon->treeName, tcon->tc_count);
211 if (tcon->nativeFileSystem) {
212 seq_printf(m, "Type: %s ",
213 tcon->nativeFileSystem);
215 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
216 "\nPathComponentMax: %d Status: 0x%d",
217 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
218 le32_to_cpu(tcon->fsAttrInfo.Attributes),
219 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
221 if (dev_type == FILE_DEVICE_DISK)
222 seq_puts(m, " type: DISK ");
223 else if (dev_type == FILE_DEVICE_CD_ROM)
224 seq_puts(m, " type: CDROM ");
226 seq_printf(m, " type: %d ", dev_type);
228 if (tcon->need_reconnect)
229 seq_puts(m, "\tDISCONNECTED ");
233 seq_puts(m, "\n\tMIDs:\n");
235 spin_lock(&GlobalMid_Lock);
236 list_for_each(tmp3, &server->pending_mid_q) {
237 mid_entry = list_entry(tmp3, struct mid_q_entry,
239 seq_printf(m, "\tState: %d com: %d pid:"
240 " %d cbdata: %p mid %llu\n",
241 mid_entry->mid_state,
242 le16_to_cpu(mid_entry->command),
244 mid_entry->callback_data,
247 spin_unlock(&GlobalMid_Lock);
250 spin_unlock(&cifs_tcp_ses_lock);
253 /* BB add code to dump additional info such as TCP session info now */
257 static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
259 return single_open(file, cifs_debug_data_proc_show, NULL);
262 static const struct file_operations cifs_debug_data_proc_fops = {
263 .owner = THIS_MODULE,
264 .open = cifs_debug_data_proc_open,
267 .release = single_release,
270 #ifdef CONFIG_CIFS_STATS
271 static ssize_t cifs_stats_proc_write(struct file *file,
272 const char __user *buffer, size_t count, loff_t *ppos)
276 struct list_head *tmp1, *tmp2, *tmp3;
277 struct TCP_Server_Info *server;
278 struct cifs_ses *ses;
279 struct cifs_tcon *tcon;
281 rc = get_user(c, buffer);
285 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
286 #ifdef CONFIG_CIFS_STATS2
287 atomic_set(&totBufAllocCount, 0);
288 atomic_set(&totSmBufAllocCount, 0);
289 #endif /* CONFIG_CIFS_STATS2 */
290 spin_lock(&cifs_tcp_ses_lock);
291 list_for_each(tmp1, &cifs_tcp_ses_list) {
292 server = list_entry(tmp1, struct TCP_Server_Info,
294 list_for_each(tmp2, &server->smb_ses_list) {
295 ses = list_entry(tmp2, struct cifs_ses,
297 list_for_each(tmp3, &ses->tcon_list) {
298 tcon = list_entry(tmp3,
301 atomic_set(&tcon->num_smbs_sent, 0);
302 if (server->ops->clear_stats)
303 server->ops->clear_stats(tcon);
307 spin_unlock(&cifs_tcp_ses_lock);
313 static int cifs_stats_proc_show(struct seq_file *m, void *v)
316 struct list_head *tmp1, *tmp2, *tmp3;
317 struct TCP_Server_Info *server;
318 struct cifs_ses *ses;
319 struct cifs_tcon *tcon;
322 "Resources in use\nCIFS Session: %d\n",
323 sesInfoAllocCount.counter);
324 seq_printf(m, "Share (unique mount targets): %d\n",
325 tconInfoAllocCount.counter);
326 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
327 bufAllocCount.counter,
328 cifs_min_rcv + tcpSesAllocCount.counter);
329 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
330 smBufAllocCount.counter, cifs_min_small);
331 #ifdef CONFIG_CIFS_STATS2
332 seq_printf(m, "Total Large %d Small %d Allocations\n",
333 atomic_read(&totBufAllocCount),
334 atomic_read(&totSmBufAllocCount));
335 #endif /* CONFIG_CIFS_STATS2 */
337 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
339 "\n%d session %d share reconnects\n",
340 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
343 "Total vfs operations: %d maximum at one time: %d\n",
344 GlobalCurrentXid, GlobalMaxActiveXid);
347 spin_lock(&cifs_tcp_ses_lock);
348 list_for_each(tmp1, &cifs_tcp_ses_list) {
349 server = list_entry(tmp1, struct TCP_Server_Info,
351 list_for_each(tmp2, &server->smb_ses_list) {
352 ses = list_entry(tmp2, struct cifs_ses,
354 list_for_each(tmp3, &ses->tcon_list) {
355 tcon = list_entry(tmp3,
359 seq_printf(m, "\n%d) %s", i, tcon->treeName);
360 if (tcon->need_reconnect)
361 seq_puts(m, "\tDISCONNECTED ");
362 seq_printf(m, "\nSMBs: %d",
363 atomic_read(&tcon->num_smbs_sent));
364 if (server->ops->print_stats)
365 server->ops->print_stats(m, tcon);
369 spin_unlock(&cifs_tcp_ses_lock);
375 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
377 return single_open(file, cifs_stats_proc_show, NULL);
380 static const struct file_operations cifs_stats_proc_fops = {
381 .owner = THIS_MODULE,
382 .open = cifs_stats_proc_open,
385 .release = single_release,
386 .write = cifs_stats_proc_write,
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_lookup_cache_proc_fops;
393 static const struct file_operations traceSMB_proc_fops;
394 static const struct file_operations cifs_security_flags_proc_fops;
395 static const struct file_operations cifs_linux_ext_proc_fops;
400 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
401 if (proc_fs_cifs == NULL)
404 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
406 #ifdef CONFIG_CIFS_STATS
407 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
409 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
410 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
411 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
412 &cifs_linux_ext_proc_fops);
413 proc_create("SecurityFlags", 0, proc_fs_cifs,
414 &cifs_security_flags_proc_fops);
415 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
416 &cifs_lookup_cache_proc_fops);
420 cifs_proc_clean(void)
422 if (proc_fs_cifs == NULL)
425 remove_proc_entry("DebugData", proc_fs_cifs);
426 remove_proc_entry("cifsFYI", proc_fs_cifs);
427 remove_proc_entry("traceSMB", proc_fs_cifs);
428 #ifdef CONFIG_CIFS_STATS
429 remove_proc_entry("Stats", proc_fs_cifs);
431 remove_proc_entry("SecurityFlags", proc_fs_cifs);
432 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
433 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
434 remove_proc_entry("fs/cifs", NULL);
437 static int cifsFYI_proc_show(struct seq_file *m, void *v)
439 seq_printf(m, "%d\n", cifsFYI);
443 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
445 return single_open(file, cifsFYI_proc_show, NULL);
448 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
449 size_t count, loff_t *ppos)
454 rc = get_user(c, buffer);
457 if (c == '0' || c == 'n' || c == 'N')
459 else if (c == '1' || c == 'y' || c == 'Y')
461 else if ((c > '1') && (c <= '9'))
462 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
467 static const struct file_operations cifsFYI_proc_fops = {
468 .owner = THIS_MODULE,
469 .open = cifsFYI_proc_open,
472 .release = single_release,
473 .write = cifsFYI_proc_write,
476 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
478 seq_printf(m, "%d\n", linuxExtEnabled);
482 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
484 return single_open(file, cifs_linux_ext_proc_show, NULL);
487 static ssize_t cifs_linux_ext_proc_write(struct file *file,
488 const char __user *buffer, size_t count, loff_t *ppos)
493 rc = get_user(c, buffer);
496 if (c == '0' || c == 'n' || c == 'N')
498 else if (c == '1' || c == 'y' || c == 'Y')
504 static const struct file_operations cifs_linux_ext_proc_fops = {
505 .owner = THIS_MODULE,
506 .open = cifs_linux_ext_proc_open,
509 .release = single_release,
510 .write = cifs_linux_ext_proc_write,
513 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
515 seq_printf(m, "%d\n", lookupCacheEnabled);
519 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
521 return single_open(file, cifs_lookup_cache_proc_show, NULL);
524 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
525 const char __user *buffer, size_t count, loff_t *ppos)
530 rc = get_user(c, buffer);
533 if (c == '0' || c == 'n' || c == 'N')
534 lookupCacheEnabled = 0;
535 else if (c == '1' || c == 'y' || c == 'Y')
536 lookupCacheEnabled = 1;
541 static const struct file_operations cifs_lookup_cache_proc_fops = {
542 .owner = THIS_MODULE,
543 .open = cifs_lookup_cache_proc_open,
546 .release = single_release,
547 .write = cifs_lookup_cache_proc_write,
550 static int traceSMB_proc_show(struct seq_file *m, void *v)
552 seq_printf(m, "%d\n", traceSMB);
556 static int traceSMB_proc_open(struct inode *inode, struct file *file)
558 return single_open(file, traceSMB_proc_show, NULL);
561 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
562 size_t count, loff_t *ppos)
567 rc = get_user(c, buffer);
570 if (c == '0' || c == 'n' || c == 'N')
572 else if (c == '1' || c == 'y' || c == 'Y')
578 static const struct file_operations traceSMB_proc_fops = {
579 .owner = THIS_MODULE,
580 .open = traceSMB_proc_open,
583 .release = single_release,
584 .write = traceSMB_proc_write,
587 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
589 seq_printf(m, "0x%x\n", global_secflags);
593 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
595 return single_open(file, cifs_security_flags_proc_show, NULL);
598 static ssize_t cifs_security_flags_proc_write(struct file *file,
599 const char __user *buffer, size_t count, loff_t *ppos)
603 char flags_string[12];
606 if ((count < 1) || (count > 11))
609 memset(flags_string, 0, 12);
611 if (copy_from_user(flags_string, buffer, count))
615 /* single char or single char followed by null */
617 if (c == '0' || c == 'n' || c == 'N') {
618 global_secflags = CIFSSEC_DEF; /* default */
620 } else if (c == '1' || c == 'y' || c == 'Y') {
621 global_secflags = CIFSSEC_MAX;
623 } else if (!isdigit(c)) {
624 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
630 /* else we have a number */
631 rc = kstrtouint(flags_string, 0, &flags);
633 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
638 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
641 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
645 if (flags & ~CIFSSEC_MASK) {
646 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
647 flags & ~CIFSSEC_MASK);
651 /* flags look ok - update the global security flags for cifs module */
652 global_secflags = flags;
653 if (global_secflags & CIFSSEC_MUST_SIGN) {
654 /* requiring signing implies signing is allowed */
655 global_secflags |= CIFSSEC_MAY_SIGN;
656 cifs_dbg(FYI, "packet signing now required\n");
657 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
658 cifs_dbg(FYI, "packet signing disabled\n");
660 /* BB should we turn on MAY flags for other MUST options? */
664 static const struct file_operations cifs_security_flags_proc_fops = {
665 .owner = THIS_MODULE,
666 .open = cifs_security_flags_proc_open,
669 .release = single_release,
670 .write = cifs_security_flags_proc_write,
673 inline void cifs_proc_init(void)
677 inline void cifs_proc_clean(void)