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 <linux/uaccess.h>
30 #include "cifsproto.h"
31 #include "cifs_debug.h"
33 #ifdef CONFIG_CIFS_SMB_DIRECT
34 #include "smbdirect.h"
38 cifs_dump_mem(char *label
, void *data
, int length
)
40 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label
, length
, data
);
41 print_hex_dump(KERN_DEBUG
, "", DUMP_PREFIX_OFFSET
, 16, 4,
45 void cifs_dump_detail(void *buf
, struct TCP_Server_Info
*server
)
47 #ifdef CONFIG_CIFS_DEBUG2
48 struct smb_hdr
*smb
= (struct smb_hdr
*)buf
;
50 cifs_dbg(VFS
, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
51 smb
->Command
, smb
->Status
.CifsError
,
52 smb
->Flags
, smb
->Flags2
, smb
->Mid
, smb
->Pid
);
53 cifs_dbg(VFS
, "smb buf %p len %u\n", smb
,
54 server
->ops
->calc_smb_size(smb
, server
));
55 #endif /* CONFIG_CIFS_DEBUG2 */
58 void cifs_dump_mids(struct TCP_Server_Info
*server
)
60 #ifdef CONFIG_CIFS_DEBUG2
61 struct list_head
*tmp
;
62 struct mid_q_entry
*mid_entry
;
67 cifs_dbg(VFS
, "Dump pending requests:\n");
68 spin_lock(&GlobalMid_Lock
);
69 list_for_each(tmp
, &server
->pending_mid_q
) {
70 mid_entry
= list_entry(tmp
, struct mid_q_entry
, qhead
);
71 cifs_dbg(VFS
, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
73 le16_to_cpu(mid_entry
->command
),
75 mid_entry
->callback_data
,
77 #ifdef CONFIG_CIFS_STATS2
78 cifs_dbg(VFS
, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
81 mid_entry
->when_received
,
84 cifs_dbg(VFS
, "IsMult: %d IsEnd: %d\n",
85 mid_entry
->multiRsp
, mid_entry
->multiEnd
);
86 if (mid_entry
->resp_buf
) {
87 cifs_dump_detail(mid_entry
->resp_buf
, server
);
88 cifs_dump_mem("existing buf: ",
89 mid_entry
->resp_buf
, 62);
92 spin_unlock(&GlobalMid_Lock
);
93 #endif /* CONFIG_CIFS_DEBUG2 */
97 static void cifs_debug_tcon(struct seq_file
*m
, struct cifs_tcon
*tcon
)
99 __u32 dev_type
= le32_to_cpu(tcon
->fsDevInfo
.DeviceType
);
101 seq_printf(m
, "%s Mounts: %d ", tcon
->treeName
, tcon
->tc_count
);
102 if (tcon
->nativeFileSystem
)
103 seq_printf(m
, "Type: %s ", tcon
->nativeFileSystem
);
104 seq_printf(m
, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
105 le32_to_cpu(tcon
->fsDevInfo
.DeviceCharacteristics
),
106 le32_to_cpu(tcon
->fsAttrInfo
.Attributes
),
107 le32_to_cpu(tcon
->fsAttrInfo
.MaxPathNameComponentLength
),
109 if (dev_type
== FILE_DEVICE_DISK
)
110 seq_puts(m
, " type: DISK ");
111 else if (dev_type
== FILE_DEVICE_CD_ROM
)
112 seq_puts(m
, " type: CDROM ");
114 seq_printf(m
, " type: %d ", dev_type
);
116 seq_printf(m
, " Encrypted");
118 seq_printf(m
, " nocase");
120 seq_printf(m
, " POSIX Extensions");
121 if (tcon
->ses
->server
->ops
->dump_share_caps
)
122 tcon
->ses
->server
->ops
->dump_share_caps(m
, tcon
);
124 if (tcon
->need_reconnect
)
125 seq_puts(m
, "\tDISCONNECTED ");
129 static int cifs_debug_data_proc_show(struct seq_file
*m
, void *v
)
131 struct list_head
*tmp1
, *tmp2
, *tmp3
;
132 struct mid_q_entry
*mid_entry
;
133 struct TCP_Server_Info
*server
;
134 struct cifs_ses
*ses
;
135 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 #ifdef CONFIG_CIFS_SMB_DIRECT
178 seq_printf(m
, "\nSMBDirect (in hex) protocol version: %x "
179 "transport status: %x",
180 server
->smbd_conn
->protocol
,
181 server
->smbd_conn
->transport_status
);
182 seq_printf(m
, "\nConn receive_credit_max: %x "
183 "send_credit_target: %x max_send_size: %x",
184 server
->smbd_conn
->receive_credit_max
,
185 server
->smbd_conn
->send_credit_target
,
186 server
->smbd_conn
->max_send_size
);
187 seq_printf(m
, "\nConn max_fragmented_recv_size: %x "
188 "max_fragmented_send_size: %x max_receive_size:%x",
189 server
->smbd_conn
->max_fragmented_recv_size
,
190 server
->smbd_conn
->max_fragmented_send_size
,
191 server
->smbd_conn
->max_receive_size
);
192 seq_printf(m
, "\nConn keep_alive_interval: %x "
193 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
194 server
->smbd_conn
->keep_alive_interval
,
195 server
->smbd_conn
->max_readwrite_size
,
196 server
->smbd_conn
->rdma_readwrite_threshold
);
197 seq_printf(m
, "\nDebug count_get_receive_buffer: %x "
198 "count_put_receive_buffer: %x count_send_empty: %x",
199 server
->smbd_conn
->count_get_receive_buffer
,
200 server
->smbd_conn
->count_put_receive_buffer
,
201 server
->smbd_conn
->count_send_empty
);
202 seq_printf(m
, "\nRead Queue count_reassembly_queue: %x "
203 "count_enqueue_reassembly_queue: %x "
204 "count_dequeue_reassembly_queue: %x "
205 "fragment_reassembly_remaining: %x "
206 "reassembly_data_length: %x "
207 "reassembly_queue_length: %x",
208 server
->smbd_conn
->count_reassembly_queue
,
209 server
->smbd_conn
->count_enqueue_reassembly_queue
,
210 server
->smbd_conn
->count_dequeue_reassembly_queue
,
211 server
->smbd_conn
->fragment_reassembly_remaining
,
212 server
->smbd_conn
->reassembly_data_length
,
213 server
->smbd_conn
->reassembly_queue_length
);
214 seq_printf(m
, "\nCurrent Credits send_credits: %x "
215 "receive_credits: %x receive_credit_target: %x",
216 atomic_read(&server
->smbd_conn
->send_credits
),
217 atomic_read(&server
->smbd_conn
->receive_credits
),
218 server
->smbd_conn
->receive_credit_target
);
219 seq_printf(m
, "\nPending send_pending: %x send_payload_pending:"
220 " %x smbd_send_pending: %x smbd_recv_pending: %x",
221 atomic_read(&server
->smbd_conn
->send_pending
),
222 atomic_read(&server
->smbd_conn
->send_payload_pending
),
223 server
->smbd_conn
->smbd_send_pending
,
224 server
->smbd_conn
->smbd_recv_pending
);
225 seq_printf(m
, "\nReceive buffers count_receive_queue: %x "
226 "count_empty_packet_queue: %x",
227 server
->smbd_conn
->count_receive_queue
,
228 server
->smbd_conn
->count_empty_packet_queue
);
229 seq_printf(m
, "\nMR responder_resources: %x "
230 "max_frmr_depth: %x mr_type: %x",
231 server
->smbd_conn
->responder_resources
,
232 server
->smbd_conn
->max_frmr_depth
,
233 server
->smbd_conn
->mr_type
);
234 seq_printf(m
, "\nMR mr_ready_count: %x mr_used_count: %x",
235 atomic_read(&server
->smbd_conn
->mr_ready_count
),
236 atomic_read(&server
->smbd_conn
->mr_used_count
));
239 seq_printf(m
, "\nNumber of credits: %d Dialect 0x%x",
240 server
->credits
, server
->dialect
);
242 seq_printf(m
, " signed");
243 #ifdef CONFIG_CIFS_SMB311
244 if (server
->posix_ext_supported
)
245 seq_printf(m
, " posix");
248 list_for_each(tmp2
, &server
->smb_ses_list
) {
249 ses
= list_entry(tmp2
, struct cifs_ses
,
251 if ((ses
->serverDomain
== NULL
) ||
252 (ses
->serverOS
== NULL
) ||
253 (ses
->serverNOS
== NULL
)) {
254 seq_printf(m
, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t",
255 i
, ses
->serverName
, ses
->ses_count
,
256 ses
->capabilities
, ses
->status
);
257 if (ses
->session_flags
& SMB2_SESSION_FLAG_IS_GUEST
)
258 seq_printf(m
, "Guest\t");
259 else if (ses
->session_flags
& SMB2_SESSION_FLAG_IS_NULL
)
260 seq_printf(m
, "Anonymous\t");
263 "\n%d) Name: %s Domain: %s Uses: %d OS:"
264 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
265 " session status: %d\t",
266 i
, ses
->serverName
, ses
->serverDomain
,
267 ses
->ses_count
, ses
->serverOS
, ses
->serverNOS
,
268 ses
->capabilities
, ses
->status
);
271 seq_printf(m
, "RDMA\n\t");
272 seq_printf(m
, "TCP status: %d\n\tLocal Users To "
273 "Server: %d SecMode: 0x%x Req On Wire: %d",
274 server
->tcpStatus
, server
->srv_count
,
275 server
->sec_mode
, in_flight(server
));
277 #ifdef CONFIG_CIFS_STATS2
278 seq_printf(m
, " In Send: %d In MaxReq Wait: %d",
279 atomic_read(&server
->in_send
),
280 atomic_read(&server
->num_waiters
));
283 seq_puts(m
, "\n\tShares:");
286 seq_printf(m
, "\n\t%d) IPC: ", j
);
288 cifs_debug_tcon(m
, ses
->tcon_ipc
);
290 seq_puts(m
, "none\n");
292 list_for_each(tmp3
, &ses
->tcon_list
) {
293 tcon
= list_entry(tmp3
, struct cifs_tcon
,
296 seq_printf(m
, "\n\t%d) ", j
);
297 cifs_debug_tcon(m
, tcon
);
300 seq_puts(m
, "\n\tMIDs:\n");
302 spin_lock(&GlobalMid_Lock
);
303 list_for_each(tmp3
, &server
->pending_mid_q
) {
304 mid_entry
= list_entry(tmp3
, struct mid_q_entry
,
306 seq_printf(m
, "\tState: %d com: %d pid:"
307 " %d cbdata: %p mid %llu\n",
308 mid_entry
->mid_state
,
309 le16_to_cpu(mid_entry
->command
),
311 mid_entry
->callback_data
,
314 spin_unlock(&GlobalMid_Lock
);
317 spin_unlock(&cifs_tcp_ses_lock
);
320 /* BB add code to dump additional info such as TCP session info now */
324 #ifdef CONFIG_CIFS_STATS
325 static ssize_t
cifs_stats_proc_write(struct file
*file
,
326 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
330 struct list_head
*tmp1
, *tmp2
, *tmp3
;
331 struct TCP_Server_Info
*server
;
332 struct cifs_ses
*ses
;
333 struct cifs_tcon
*tcon
;
335 rc
= kstrtobool_from_user(buffer
, count
, &bv
);
337 #ifdef CONFIG_CIFS_STATS2
338 atomic_set(&totBufAllocCount
, 0);
339 atomic_set(&totSmBufAllocCount
, 0);
340 #endif /* CONFIG_CIFS_STATS2 */
341 spin_lock(&cifs_tcp_ses_lock
);
342 list_for_each(tmp1
, &cifs_tcp_ses_list
) {
343 server
= list_entry(tmp1
, struct TCP_Server_Info
,
345 list_for_each(tmp2
, &server
->smb_ses_list
) {
346 ses
= list_entry(tmp2
, struct cifs_ses
,
348 list_for_each(tmp3
, &ses
->tcon_list
) {
349 tcon
= list_entry(tmp3
,
352 atomic_set(&tcon
->num_smbs_sent
, 0);
353 if (server
->ops
->clear_stats
)
354 server
->ops
->clear_stats(tcon
);
358 spin_unlock(&cifs_tcp_ses_lock
);
366 static int cifs_stats_proc_show(struct seq_file
*m
, void *v
)
369 struct list_head
*tmp1
, *tmp2
, *tmp3
;
370 struct TCP_Server_Info
*server
;
371 struct cifs_ses
*ses
;
372 struct cifs_tcon
*tcon
;
375 "Resources in use\nCIFS Session: %d\n",
376 sesInfoAllocCount
.counter
);
377 seq_printf(m
, "Share (unique mount targets): %d\n",
378 tconInfoAllocCount
.counter
);
379 seq_printf(m
, "SMB Request/Response Buffer: %d Pool size: %d\n",
380 bufAllocCount
.counter
,
381 cifs_min_rcv
+ tcpSesAllocCount
.counter
);
382 seq_printf(m
, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
383 smBufAllocCount
.counter
, cifs_min_small
);
384 #ifdef CONFIG_CIFS_STATS2
385 seq_printf(m
, "Total Large %d Small %d Allocations\n",
386 atomic_read(&totBufAllocCount
),
387 atomic_read(&totSmBufAllocCount
));
388 #endif /* CONFIG_CIFS_STATS2 */
390 seq_printf(m
, "Operations (MIDs): %d\n", atomic_read(&midCount
));
392 "\n%d session %d share reconnects\n",
393 tcpSesReconnectCount
.counter
, tconInfoReconnectCount
.counter
);
396 "Total vfs operations: %d maximum at one time: %d\n",
397 GlobalCurrentXid
, GlobalMaxActiveXid
);
400 spin_lock(&cifs_tcp_ses_lock
);
401 list_for_each(tmp1
, &cifs_tcp_ses_list
) {
402 server
= list_entry(tmp1
, struct TCP_Server_Info
,
404 list_for_each(tmp2
, &server
->smb_ses_list
) {
405 ses
= list_entry(tmp2
, struct cifs_ses
,
407 list_for_each(tmp3
, &ses
->tcon_list
) {
408 tcon
= list_entry(tmp3
,
412 seq_printf(m
, "\n%d) %s", i
, tcon
->treeName
);
413 if (tcon
->need_reconnect
)
414 seq_puts(m
, "\tDISCONNECTED ");
415 seq_printf(m
, "\nSMBs: %d",
416 atomic_read(&tcon
->num_smbs_sent
));
417 if (server
->ops
->print_stats
)
418 server
->ops
->print_stats(m
, tcon
);
422 spin_unlock(&cifs_tcp_ses_lock
);
428 static int cifs_stats_proc_open(struct inode
*inode
, struct file
*file
)
430 return single_open(file
, cifs_stats_proc_show
, NULL
);
433 static const struct file_operations cifs_stats_proc_fops
= {
434 .open
= cifs_stats_proc_open
,
437 .release
= single_release
,
438 .write
= cifs_stats_proc_write
,
442 #ifdef CONFIG_CIFS_SMB_DIRECT
443 #define PROC_FILE_DEFINE(name) \
444 static ssize_t name##_write(struct file *file, const char __user *buffer, \
445 size_t count, loff_t *ppos) \
448 rc = kstrtoint_from_user(buffer, count, 10, & name); \
453 static int name##_proc_show(struct seq_file *m, void *v) \
455 seq_printf(m, "%d\n", name ); \
458 static int name##_open(struct inode *inode, struct file *file) \
460 return single_open(file, name##_proc_show, NULL); \
463 static const struct file_operations cifs_##name##_proc_fops = { \
464 .open = name##_open, \
466 .llseek = seq_lseek, \
467 .release = single_release, \
468 .write = name##_write, \
471 PROC_FILE_DEFINE(rdma_readwrite_threshold
);
472 PROC_FILE_DEFINE(smbd_max_frmr_depth
);
473 PROC_FILE_DEFINE(smbd_keep_alive_interval
);
474 PROC_FILE_DEFINE(smbd_max_receive_size
);
475 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size
);
476 PROC_FILE_DEFINE(smbd_max_send_size
);
477 PROC_FILE_DEFINE(smbd_send_credit_target
);
478 PROC_FILE_DEFINE(smbd_receive_credit_max
);
481 static struct proc_dir_entry
*proc_fs_cifs
;
482 static const struct file_operations cifsFYI_proc_fops
;
483 static const struct file_operations cifs_lookup_cache_proc_fops
;
484 static const struct file_operations traceSMB_proc_fops
;
485 static const struct file_operations cifs_security_flags_proc_fops
;
486 static const struct file_operations cifs_linux_ext_proc_fops
;
491 proc_fs_cifs
= proc_mkdir("fs/cifs", NULL
);
492 if (proc_fs_cifs
== NULL
)
495 proc_create_single("DebugData", 0, proc_fs_cifs
,
496 cifs_debug_data_proc_show
);
498 #ifdef CONFIG_CIFS_STATS
499 proc_create("Stats", 0644, proc_fs_cifs
, &cifs_stats_proc_fops
);
501 proc_create("cifsFYI", 0644, proc_fs_cifs
, &cifsFYI_proc_fops
);
502 proc_create("traceSMB", 0644, proc_fs_cifs
, &traceSMB_proc_fops
);
503 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs
,
504 &cifs_linux_ext_proc_fops
);
505 proc_create("SecurityFlags", 0644, proc_fs_cifs
,
506 &cifs_security_flags_proc_fops
);
507 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs
,
508 &cifs_lookup_cache_proc_fops
);
509 #ifdef CONFIG_CIFS_SMB_DIRECT
510 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs
,
511 &cifs_rdma_readwrite_threshold_proc_fops
);
512 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs
,
513 &cifs_smbd_max_frmr_depth_proc_fops
);
514 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs
,
515 &cifs_smbd_keep_alive_interval_proc_fops
);
516 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs
,
517 &cifs_smbd_max_receive_size_proc_fops
);
518 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs
,
519 &cifs_smbd_max_fragmented_recv_size_proc_fops
);
520 proc_create("smbd_max_send_size", 0644, proc_fs_cifs
,
521 &cifs_smbd_max_send_size_proc_fops
);
522 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs
,
523 &cifs_smbd_send_credit_target_proc_fops
);
524 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs
,
525 &cifs_smbd_receive_credit_max_proc_fops
);
530 cifs_proc_clean(void)
532 if (proc_fs_cifs
== NULL
)
535 remove_proc_entry("DebugData", proc_fs_cifs
);
536 remove_proc_entry("cifsFYI", proc_fs_cifs
);
537 remove_proc_entry("traceSMB", proc_fs_cifs
);
538 #ifdef CONFIG_CIFS_STATS
539 remove_proc_entry("Stats", proc_fs_cifs
);
541 remove_proc_entry("SecurityFlags", proc_fs_cifs
);
542 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs
);
543 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs
);
544 #ifdef CONFIG_CIFS_SMB_DIRECT
545 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs
);
546 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs
);
547 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs
);
548 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs
);
549 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs
);
550 remove_proc_entry("smbd_max_send_size", proc_fs_cifs
);
551 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs
);
552 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs
);
554 remove_proc_entry("fs/cifs", NULL
);
557 static int cifsFYI_proc_show(struct seq_file
*m
, void *v
)
559 seq_printf(m
, "%d\n", cifsFYI
);
563 static int cifsFYI_proc_open(struct inode
*inode
, struct file
*file
)
565 return single_open(file
, cifsFYI_proc_show
, NULL
);
568 static ssize_t
cifsFYI_proc_write(struct file
*file
, const char __user
*buffer
,
569 size_t count
, loff_t
*ppos
)
571 char c
[2] = { '\0' };
575 rc
= get_user(c
[0], buffer
);
578 if (strtobool(c
, &bv
) == 0)
580 else if ((c
[0] > '1') && (c
[0] <= '9'))
581 cifsFYI
= (int) (c
[0] - '0'); /* see cifs_debug.h for meanings */
588 static const struct file_operations cifsFYI_proc_fops
= {
589 .open
= cifsFYI_proc_open
,
592 .release
= single_release
,
593 .write
= cifsFYI_proc_write
,
596 static int cifs_linux_ext_proc_show(struct seq_file
*m
, void *v
)
598 seq_printf(m
, "%d\n", linuxExtEnabled
);
602 static int cifs_linux_ext_proc_open(struct inode
*inode
, struct file
*file
)
604 return single_open(file
, cifs_linux_ext_proc_show
, NULL
);
607 static ssize_t
cifs_linux_ext_proc_write(struct file
*file
,
608 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
612 rc
= kstrtobool_from_user(buffer
, count
, &linuxExtEnabled
);
619 static const struct file_operations cifs_linux_ext_proc_fops
= {
620 .open
= cifs_linux_ext_proc_open
,
623 .release
= single_release
,
624 .write
= cifs_linux_ext_proc_write
,
627 static int cifs_lookup_cache_proc_show(struct seq_file
*m
, void *v
)
629 seq_printf(m
, "%d\n", lookupCacheEnabled
);
633 static int cifs_lookup_cache_proc_open(struct inode
*inode
, struct file
*file
)
635 return single_open(file
, cifs_lookup_cache_proc_show
, NULL
);
638 static ssize_t
cifs_lookup_cache_proc_write(struct file
*file
,
639 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
643 rc
= kstrtobool_from_user(buffer
, count
, &lookupCacheEnabled
);
650 static const struct file_operations cifs_lookup_cache_proc_fops
= {
651 .open
= cifs_lookup_cache_proc_open
,
654 .release
= single_release
,
655 .write
= cifs_lookup_cache_proc_write
,
658 static int traceSMB_proc_show(struct seq_file
*m
, void *v
)
660 seq_printf(m
, "%d\n", traceSMB
);
664 static int traceSMB_proc_open(struct inode
*inode
, struct file
*file
)
666 return single_open(file
, traceSMB_proc_show
, NULL
);
669 static ssize_t
traceSMB_proc_write(struct file
*file
, const char __user
*buffer
,
670 size_t count
, loff_t
*ppos
)
674 rc
= kstrtobool_from_user(buffer
, count
, &traceSMB
);
681 static const struct file_operations traceSMB_proc_fops
= {
682 .open
= traceSMB_proc_open
,
685 .release
= single_release
,
686 .write
= traceSMB_proc_write
,
689 static int cifs_security_flags_proc_show(struct seq_file
*m
, void *v
)
691 seq_printf(m
, "0x%x\n", global_secflags
);
695 static int cifs_security_flags_proc_open(struct inode
*inode
, struct file
*file
)
697 return single_open(file
, cifs_security_flags_proc_show
, NULL
);
701 * Ensure that if someone sets a MUST flag, that we disable all other MAY
702 * flags except for the ones corresponding to the given MUST flag. If there are
703 * multiple MUST flags, then try to prefer more secure ones.
706 cifs_security_flags_handle_must_flags(unsigned int *flags
)
708 unsigned int signflags
= *flags
& CIFSSEC_MUST_SIGN
;
710 if ((*flags
& CIFSSEC_MUST_KRB5
) == CIFSSEC_MUST_KRB5
)
711 *flags
= CIFSSEC_MUST_KRB5
;
712 else if ((*flags
& CIFSSEC_MUST_NTLMSSP
) == CIFSSEC_MUST_NTLMSSP
)
713 *flags
= CIFSSEC_MUST_NTLMSSP
;
714 else if ((*flags
& CIFSSEC_MUST_NTLMV2
) == CIFSSEC_MUST_NTLMV2
)
715 *flags
= CIFSSEC_MUST_NTLMV2
;
716 else if ((*flags
& CIFSSEC_MUST_NTLM
) == CIFSSEC_MUST_NTLM
)
717 *flags
= CIFSSEC_MUST_NTLM
;
718 else if (CIFSSEC_MUST_LANMAN
&&
719 (*flags
& CIFSSEC_MUST_LANMAN
) == CIFSSEC_MUST_LANMAN
)
720 *flags
= CIFSSEC_MUST_LANMAN
;
721 else if (CIFSSEC_MUST_PLNTXT
&&
722 (*flags
& CIFSSEC_MUST_PLNTXT
) == CIFSSEC_MUST_PLNTXT
)
723 *flags
= CIFSSEC_MUST_PLNTXT
;
728 static ssize_t
cifs_security_flags_proc_write(struct file
*file
,
729 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
733 char flags_string
[12];
736 if ((count
< 1) || (count
> 11))
739 memset(flags_string
, 0, 12);
741 if (copy_from_user(flags_string
, buffer
, count
))
745 /* single char or single char followed by null */
746 if (strtobool(flags_string
, &bv
) == 0) {
747 global_secflags
= bv
? CIFSSEC_MAX
: CIFSSEC_DEF
;
749 } else if (!isdigit(flags_string
[0])) {
750 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n",
756 /* else we have a number */
757 rc
= kstrtouint(flags_string
, 0, &flags
);
759 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n",
764 cifs_dbg(FYI
, "sec flags 0x%x\n", flags
);
767 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n", flags_string
);
771 if (flags
& ~CIFSSEC_MASK
) {
772 cifs_dbg(VFS
, "Unsupported security flags: 0x%x\n",
773 flags
& ~CIFSSEC_MASK
);
777 cifs_security_flags_handle_must_flags(&flags
);
779 /* flags look ok - update the global security flags for cifs module */
780 global_secflags
= flags
;
781 if (global_secflags
& CIFSSEC_MUST_SIGN
) {
782 /* requiring signing implies signing is allowed */
783 global_secflags
|= CIFSSEC_MAY_SIGN
;
784 cifs_dbg(FYI
, "packet signing now required\n");
785 } else if ((global_secflags
& CIFSSEC_MAY_SIGN
) == 0) {
786 cifs_dbg(FYI
, "packet signing disabled\n");
788 /* BB should we turn on MAY flags for other MUST options? */
792 static const struct file_operations cifs_security_flags_proc_fops
= {
793 .open
= cifs_security_flags_proc_open
,
796 .release
= single_release
,
797 .write
= cifs_security_flags_proc_write
,
800 inline void cifs_proc_init(void)
804 inline void cifs_proc_clean(void)