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(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
);
82 cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %d",
84 (int)mid_entry
->command
,
86 mid_entry
->callback_data
,
88 #ifdef CONFIG_CIFS_STATS2
89 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
92 mid_entry
->when_received
,
95 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry
->multiRsp
,
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);
103 spin_unlock(&GlobalMid_Lock
);
105 #endif /* CONFIG_CIFS_DEBUG2 */
107 #ifdef CONFIG_PROC_FS
108 static int cifs_debug_data_proc_show(struct seq_file
*m
, void *v
)
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
;
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");
126 #ifdef CONFIG_CIFS_FSCACHE
127 seq_printf(m
, " fscache");
129 #ifdef CONFIG_CIFS_WEAK_PW_HASH
130 seq_printf(m
, " lanman");
132 #ifdef CONFIG_CIFS_POSIX
133 seq_printf(m
, " posix");
135 #ifdef CONFIG_CIFS_UPCALL
136 seq_printf(m
, " spnego");
138 #ifdef CONFIG_CIFS_XATTR
139 seq_printf(m
, " xattr");
141 #ifdef CONFIG_CIFS_ACL
142 seq_printf(m
, " acl");
145 seq_printf(m
, "Active VFS Requests: %d\n", GlobalTotalActiveXid
);
146 seq_printf(m
, "Servers:");
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
,
154 list_for_each(tmp2
, &server
->smb_ses_list
) {
155 ses
= list_entry(tmp2
, struct cifs_ses
,
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
);
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
);
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
));
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
));
182 seq_puts(m
, "\n\tShares:");
184 list_for_each(tmp3
, &ses
->tcon_list
) {
185 tcon
= list_entry(tmp3
, struct cifs_tcon
,
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
);
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
),
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 ");
206 seq_printf(m
, " type: %d ", dev_type
);
208 if (tcon
->need_reconnect
)
209 seq_puts(m
, "\tDISCONNECTED ");
213 seq_puts(m
, "\n\tMIDs:\n");
215 spin_lock(&GlobalMid_Lock
);
216 list_for_each(tmp3
, &server
->pending_mid_q
) {
217 mid_entry
= list_entry(tmp3
, struct mid_q_entry
,
219 seq_printf(m
, "\tState: %d com: %d pid:"
220 " %d cbdata: %p mid %d\n",
222 (int)mid_entry
->command
,
224 mid_entry
->callback_data
,
227 spin_unlock(&GlobalMid_Lock
);
230 spin_unlock(&cifs_tcp_ses_lock
);
233 /* BB add code to dump additional info such as TCP session info now */
237 static int cifs_debug_data_proc_open(struct inode
*inode
, struct file
*file
)
239 return single_open(file
, cifs_debug_data_proc_show
, NULL
);
242 static const struct file_operations cifs_debug_data_proc_fops
= {
243 .owner
= THIS_MODULE
,
244 .open
= cifs_debug_data_proc_open
,
247 .release
= single_release
,
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
)
256 struct list_head
*tmp1
, *tmp2
, *tmp3
;
257 struct TCP_Server_Info
*server
;
258 struct cifs_ses
*ses
;
259 struct cifs_tcon
*tcon
;
261 rc
= get_user(c
, buffer
);
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
,
274 list_for_each(tmp2
, &server
->smb_ses_list
) {
275 ses
= list_entry(tmp2
, struct cifs_ses
,
277 list_for_each(tmp3
, &ses
->tcon_list
) {
278 tcon
= list_entry(tmp3
,
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);
303 spin_unlock(&cifs_tcp_ses_lock
);
309 static int cifs_stats_proc_show(struct seq_file
*m
, void *v
)
312 struct list_head
*tmp1
, *tmp2
, *tmp3
;
313 struct TCP_Server_Info
*server
;
314 struct cifs_ses
*ses
;
315 struct cifs_tcon
*tcon
;
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 */
333 seq_printf(m
, "Operations (MIDs): %d\n", atomic_read(&midCount
));
335 "\n%d session %d share reconnects\n",
336 tcpSesReconnectCount
.counter
, tconInfoReconnectCount
.counter
);
339 "Total vfs operations: %d maximum at one time: %d\n",
340 GlobalCurrentXid
, GlobalMaxActiveXid
);
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
,
347 list_for_each(tmp2
, &server
->smb_ses_list
) {
348 ses
= list_entry(tmp2
, struct cifs_ses
,
350 list_for_each(tmp3
, &ses
->tcon_list
) {
351 tcon
= list_entry(tmp3
,
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 "
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 "
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 "
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 "
391 atomic_read(&tcon
->num_ffirst
),
392 atomic_read(&tcon
->num_fnext
),
393 atomic_read(&tcon
->num_fclose
));
397 spin_unlock(&cifs_tcp_ses_lock
);
403 static int cifs_stats_proc_open(struct inode
*inode
, struct file
*file
)
405 return single_open(file
, cifs_stats_proc_show
, NULL
);
408 static const struct file_operations cifs_stats_proc_fops
= {
409 .owner
= THIS_MODULE
,
410 .open
= cifs_stats_proc_open
,
413 .release
= single_release
,
414 .write
= cifs_stats_proc_write
,
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
;
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("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
);
453 cifs_proc_clean(void)
455 if (proc_fs_cifs
== NULL
)
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
);
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
);
472 static int cifsFYI_proc_show(struct seq_file
*m
, void *v
)
474 seq_printf(m
, "%d\n", cifsFYI
);
478 static int cifsFYI_proc_open(struct inode
*inode
, struct file
*file
)
480 return single_open(file
, cifsFYI_proc_show
, NULL
);
483 static ssize_t
cifsFYI_proc_write(struct file
*file
, const char __user
*buffer
,
484 size_t count
, loff_t
*ppos
)
489 rc
= get_user(c
, buffer
);
492 if (c
== '0' || c
== 'n' || c
== 'N')
494 else if (c
== '1' || c
== 'y' || c
== 'Y')
496 else if ((c
> '1') && (c
<= '9'))
497 cifsFYI
= (int) (c
- '0'); /* see cifs_debug.h for meanings */
502 static const struct file_operations cifsFYI_proc_fops
= {
503 .owner
= THIS_MODULE
,
504 .open
= cifsFYI_proc_open
,
507 .release
= single_release
,
508 .write
= cifsFYI_proc_write
,
511 static int cifs_oplock_proc_show(struct seq_file
*m
, void *v
)
513 seq_printf(m
, "%d\n", enable_oplocks
);
517 static int cifs_oplock_proc_open(struct inode
*inode
, struct file
*file
)
519 return single_open(file
, cifs_oplock_proc_show
, NULL
);
522 static ssize_t
cifs_oplock_proc_write(struct file
*file
,
523 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
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
);
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;
542 static const struct file_operations cifs_oplock_proc_fops
= {
543 .owner
= THIS_MODULE
,
544 .open
= cifs_oplock_proc_open
,
547 .release
= single_release
,
548 .write
= cifs_oplock_proc_write
,
551 static int cifs_linux_ext_proc_show(struct seq_file
*m
, void *v
)
553 seq_printf(m
, "%d\n", linuxExtEnabled
);
557 static int cifs_linux_ext_proc_open(struct inode
*inode
, struct file
*file
)
559 return single_open(file
, cifs_linux_ext_proc_show
, NULL
);
562 static ssize_t
cifs_linux_ext_proc_write(struct file
*file
,
563 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
568 rc
= get_user(c
, buffer
);
571 if (c
== '0' || c
== 'n' || c
== 'N')
573 else if (c
== '1' || c
== 'y' || c
== 'Y')
579 static const struct file_operations cifs_linux_ext_proc_fops
= {
580 .owner
= THIS_MODULE
,
581 .open
= cifs_linux_ext_proc_open
,
584 .release
= single_release
,
585 .write
= cifs_linux_ext_proc_write
,
588 static int cifs_lookup_cache_proc_show(struct seq_file
*m
, void *v
)
590 seq_printf(m
, "%d\n", lookupCacheEnabled
);
594 static int cifs_lookup_cache_proc_open(struct inode
*inode
, struct file
*file
)
596 return single_open(file
, cifs_lookup_cache_proc_show
, NULL
);
599 static ssize_t
cifs_lookup_cache_proc_write(struct file
*file
,
600 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
605 rc
= get_user(c
, buffer
);
608 if (c
== '0' || c
== 'n' || c
== 'N')
609 lookupCacheEnabled
= 0;
610 else if (c
== '1' || c
== 'y' || c
== 'Y')
611 lookupCacheEnabled
= 1;
616 static const struct file_operations cifs_lookup_cache_proc_fops
= {
617 .owner
= THIS_MODULE
,
618 .open
= cifs_lookup_cache_proc_open
,
621 .release
= single_release
,
622 .write
= cifs_lookup_cache_proc_write
,
625 static int traceSMB_proc_show(struct seq_file
*m
, void *v
)
627 seq_printf(m
, "%d\n", traceSMB
);
631 static int traceSMB_proc_open(struct inode
*inode
, struct file
*file
)
633 return single_open(file
, traceSMB_proc_show
, NULL
);
636 static ssize_t
traceSMB_proc_write(struct file
*file
, const char __user
*buffer
,
637 size_t count
, loff_t
*ppos
)
642 rc
= get_user(c
, buffer
);
645 if (c
== '0' || c
== 'n' || c
== 'N')
647 else if (c
== '1' || c
== 'y' || c
== 'Y')
653 static const struct file_operations traceSMB_proc_fops
= {
654 .owner
= THIS_MODULE
,
655 .open
= traceSMB_proc_open
,
658 .release
= single_release
,
659 .write
= traceSMB_proc_write
,
662 static int cifs_multiuser_mount_proc_show(struct seq_file
*m
, void *v
)
664 seq_printf(m
, "%d\n", multiuser_mount
);
668 static int cifs_multiuser_mount_proc_open(struct inode
*inode
, struct file
*fh
)
670 return single_open(fh
, cifs_multiuser_mount_proc_show
, NULL
);
673 static ssize_t
cifs_multiuser_mount_proc_write(struct file
*file
,
674 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
680 rc
= get_user(c
, buffer
);
683 if (c
== '0' || c
== 'n' || c
== 'N')
685 else if (c
== '1' || c
== 'y' || c
== 'Y') {
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 "
699 static const struct file_operations cifs_multiuser_mount_proc_fops
= {
700 .owner
= THIS_MODULE
,
701 .open
= cifs_multiuser_mount_proc_open
,
704 .release
= single_release
,
705 .write
= cifs_multiuser_mount_proc_write
,
708 static int cifs_security_flags_proc_show(struct seq_file
*m
, void *v
)
710 seq_printf(m
, "0x%x\n", global_secflags
);
714 static int cifs_security_flags_proc_open(struct inode
*inode
, struct file
*file
)
716 return single_open(file
, cifs_security_flags_proc_show
, NULL
);
719 static ssize_t
cifs_security_flags_proc_write(struct file
*file
,
720 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
723 char flags_string
[12];
726 if ((count
< 1) || (count
> 11))
729 memset(flags_string
, 0, 12);
731 if (copy_from_user(flags_string
, buffer
, count
))
735 /* single char or single char followed by null */
737 if (c
== '0' || c
== 'n' || c
== 'N') {
738 global_secflags
= CIFSSEC_DEF
; /* default */
740 } else if (c
== '1' || c
== 'y' || c
== 'Y') {
741 global_secflags
= CIFSSEC_MAX
;
743 } else if (!isdigit(c
)) {
744 cERROR(1, "invalid flag %c", c
);
748 /* else we have a number */
750 flags
= simple_strtoul(flags_string
, NULL
, 0);
752 cFYI(1, "sec flags 0x%x", flags
);
755 cERROR(1, "invalid security flags %s", flags_string
);
759 if (flags
& ~CIFSSEC_MASK
) {
760 cERROR(1, "attempt to set unsupported security flags 0x%x",
761 flags
& ~CIFSSEC_MASK
);
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");
773 /* BB should we turn on MAY flags for other MUST options? */
777 static const struct file_operations cifs_security_flags_proc_fops
= {
778 .owner
= THIS_MODULE
,
779 .open
= cifs_security_flags_proc_open
,
782 .release
= single_release
,
783 .write
= cifs_security_flags_proc_write
,
786 inline void cifs_proc_init(void)
790 inline void cifs_proc_clean(void)