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 ");
130 cifs_dump_iface(struct seq_file
*m
, struct cifs_server_iface
*iface
)
132 struct sockaddr_in
*ipv4
= (struct sockaddr_in
*)&iface
->sockaddr
;
133 struct sockaddr_in6
*ipv6
= (struct sockaddr_in6
*)&iface
->sockaddr
;
135 seq_printf(m
, "\t\tSpeed: %zu bps\n", iface
->speed
);
136 seq_puts(m
, "\t\tCapabilities: ");
137 if (iface
->rdma_capable
)
138 seq_puts(m
, "rdma ");
139 if (iface
->rss_capable
)
142 if (iface
->sockaddr
.ss_family
== AF_INET
)
143 seq_printf(m
, "\t\tIPv4: %pI4\n", &ipv4
->sin_addr
);
144 else if (iface
->sockaddr
.ss_family
== AF_INET6
)
145 seq_printf(m
, "\t\tIPv6: %pI6\n", &ipv6
->sin6_addr
);
148 static int cifs_debug_data_proc_show(struct seq_file
*m
, void *v
)
150 struct list_head
*tmp1
, *tmp2
, *tmp3
;
151 struct mid_q_entry
*mid_entry
;
152 struct TCP_Server_Info
*server
;
153 struct cifs_ses
*ses
;
154 struct cifs_tcon
*tcon
;
158 "Display Internal CIFS Data Structures for Debugging\n"
159 "---------------------------------------------------\n");
160 seq_printf(m
, "CIFS Version %s\n", CIFS_VERSION
);
161 seq_printf(m
, "Features:");
162 #ifdef CONFIG_CIFS_DFS_UPCALL
163 seq_printf(m
, " DFS");
165 #ifdef CONFIG_CIFS_FSCACHE
166 seq_printf(m
, ",FSCACHE");
168 #ifdef CONFIG_CIFS_SMB_DIRECT
169 seq_printf(m
, ",SMB_DIRECT");
171 #ifdef CONFIG_CIFS_STATS2
172 seq_printf(m
, ",STATS2");
174 seq_printf(m
, ",STATS");
176 #ifdef CONFIG_CIFS_DEBUG2
177 seq_printf(m
, ",DEBUG2");
178 #elif defined(CONFIG_CIFS_DEBUG)
179 seq_printf(m
, ",DEBUG");
181 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
182 seq_printf(m
, ",ALLOW_INSECURE_LEGACY");
184 #ifdef CONFIG_CIFS_WEAK_PW_HASH
185 seq_printf(m
, ",WEAK_PW_HASH");
187 #ifdef CONFIG_CIFS_POSIX
188 seq_printf(m
, ",CIFS_POSIX");
190 #ifdef CONFIG_CIFS_UPCALL
191 seq_printf(m
, ",UPCALL(SPNEGO)");
193 #ifdef CONFIG_CIFS_XATTR
194 seq_printf(m
, ",XATTR");
196 #ifdef CONFIG_CIFS_ACL
197 seq_printf(m
, ",ACL");
200 seq_printf(m
, "Active VFS Requests: %d\n", GlobalTotalActiveXid
);
201 seq_printf(m
, "Servers:");
204 spin_lock(&cifs_tcp_ses_lock
);
205 list_for_each(tmp1
, &cifs_tcp_ses_list
) {
206 server
= list_entry(tmp1
, struct TCP_Server_Info
,
209 #ifdef CONFIG_CIFS_SMB_DIRECT
213 seq_printf(m
, "\nSMBDirect (in hex) protocol version: %x "
214 "transport status: %x",
215 server
->smbd_conn
->protocol
,
216 server
->smbd_conn
->transport_status
);
217 seq_printf(m
, "\nConn receive_credit_max: %x "
218 "send_credit_target: %x max_send_size: %x",
219 server
->smbd_conn
->receive_credit_max
,
220 server
->smbd_conn
->send_credit_target
,
221 server
->smbd_conn
->max_send_size
);
222 seq_printf(m
, "\nConn max_fragmented_recv_size: %x "
223 "max_fragmented_send_size: %x max_receive_size:%x",
224 server
->smbd_conn
->max_fragmented_recv_size
,
225 server
->smbd_conn
->max_fragmented_send_size
,
226 server
->smbd_conn
->max_receive_size
);
227 seq_printf(m
, "\nConn keep_alive_interval: %x "
228 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
229 server
->smbd_conn
->keep_alive_interval
,
230 server
->smbd_conn
->max_readwrite_size
,
231 server
->smbd_conn
->rdma_readwrite_threshold
);
232 seq_printf(m
, "\nDebug count_get_receive_buffer: %x "
233 "count_put_receive_buffer: %x count_send_empty: %x",
234 server
->smbd_conn
->count_get_receive_buffer
,
235 server
->smbd_conn
->count_put_receive_buffer
,
236 server
->smbd_conn
->count_send_empty
);
237 seq_printf(m
, "\nRead Queue count_reassembly_queue: %x "
238 "count_enqueue_reassembly_queue: %x "
239 "count_dequeue_reassembly_queue: %x "
240 "fragment_reassembly_remaining: %x "
241 "reassembly_data_length: %x "
242 "reassembly_queue_length: %x",
243 server
->smbd_conn
->count_reassembly_queue
,
244 server
->smbd_conn
->count_enqueue_reassembly_queue
,
245 server
->smbd_conn
->count_dequeue_reassembly_queue
,
246 server
->smbd_conn
->fragment_reassembly_remaining
,
247 server
->smbd_conn
->reassembly_data_length
,
248 server
->smbd_conn
->reassembly_queue_length
);
249 seq_printf(m
, "\nCurrent Credits send_credits: %x "
250 "receive_credits: %x receive_credit_target: %x",
251 atomic_read(&server
->smbd_conn
->send_credits
),
252 atomic_read(&server
->smbd_conn
->receive_credits
),
253 server
->smbd_conn
->receive_credit_target
);
254 seq_printf(m
, "\nPending send_pending: %x send_payload_pending:"
255 " %x smbd_send_pending: %x smbd_recv_pending: %x",
256 atomic_read(&server
->smbd_conn
->send_pending
),
257 atomic_read(&server
->smbd_conn
->send_payload_pending
),
258 server
->smbd_conn
->smbd_send_pending
,
259 server
->smbd_conn
->smbd_recv_pending
);
260 seq_printf(m
, "\nReceive buffers count_receive_queue: %x "
261 "count_empty_packet_queue: %x",
262 server
->smbd_conn
->count_receive_queue
,
263 server
->smbd_conn
->count_empty_packet_queue
);
264 seq_printf(m
, "\nMR responder_resources: %x "
265 "max_frmr_depth: %x mr_type: %x",
266 server
->smbd_conn
->responder_resources
,
267 server
->smbd_conn
->max_frmr_depth
,
268 server
->smbd_conn
->mr_type
);
269 seq_printf(m
, "\nMR mr_ready_count: %x mr_used_count: %x",
270 atomic_read(&server
->smbd_conn
->mr_ready_count
),
271 atomic_read(&server
->smbd_conn
->mr_used_count
));
274 seq_printf(m
, "\nNumber of credits: %d Dialect 0x%x",
275 server
->credits
, server
->dialect
);
277 seq_printf(m
, " signed");
278 if (server
->posix_ext_supported
)
279 seq_printf(m
, " posix");
282 list_for_each(tmp2
, &server
->smb_ses_list
) {
283 ses
= list_entry(tmp2
, struct cifs_ses
,
285 if ((ses
->serverDomain
== NULL
) ||
286 (ses
->serverOS
== NULL
) ||
287 (ses
->serverNOS
== NULL
)) {
288 seq_printf(m
, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t",
289 i
, ses
->serverName
, ses
->ses_count
,
290 ses
->capabilities
, ses
->status
);
291 if (ses
->session_flags
& SMB2_SESSION_FLAG_IS_GUEST
)
292 seq_printf(m
, "Guest\t");
293 else if (ses
->session_flags
& SMB2_SESSION_FLAG_IS_NULL
)
294 seq_printf(m
, "Anonymous\t");
297 "\n%d) Name: %s Domain: %s Uses: %d OS:"
298 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
299 " session status: %d\t",
300 i
, ses
->serverName
, ses
->serverDomain
,
301 ses
->ses_count
, ses
->serverOS
, ses
->serverNOS
,
302 ses
->capabilities
, ses
->status
);
305 seq_printf(m
, "RDMA\n\t");
306 seq_printf(m
, "TCP status: %d\n\tLocal Users To "
307 "Server: %d SecMode: 0x%x Req On Wire: %d",
308 server
->tcpStatus
, server
->srv_count
,
309 server
->sec_mode
, in_flight(server
));
311 #ifdef CONFIG_CIFS_STATS2
312 seq_printf(m
, " In Send: %d In MaxReq Wait: %d",
313 atomic_read(&server
->in_send
),
314 atomic_read(&server
->num_waiters
));
317 seq_puts(m
, "\n\tShares:");
320 seq_printf(m
, "\n\t%d) IPC: ", j
);
322 cifs_debug_tcon(m
, ses
->tcon_ipc
);
324 seq_puts(m
, "none\n");
326 list_for_each(tmp3
, &ses
->tcon_list
) {
327 tcon
= list_entry(tmp3
, struct cifs_tcon
,
330 seq_printf(m
, "\n\t%d) ", j
);
331 cifs_debug_tcon(m
, tcon
);
334 seq_puts(m
, "\n\tMIDs:\n");
336 spin_lock(&GlobalMid_Lock
);
337 list_for_each(tmp3
, &server
->pending_mid_q
) {
338 mid_entry
= list_entry(tmp3
, struct mid_q_entry
,
340 seq_printf(m
, "\tState: %d com: %d pid:"
341 " %d cbdata: %p mid %llu\n",
342 mid_entry
->mid_state
,
343 le16_to_cpu(mid_entry
->command
),
345 mid_entry
->callback_data
,
348 spin_unlock(&GlobalMid_Lock
);
350 spin_lock(&ses
->iface_lock
);
351 if (ses
->iface_count
)
352 seq_printf(m
, "\n\tServer interfaces: %zu\n",
354 for (j
= 0; j
< ses
->iface_count
; j
++) {
355 seq_printf(m
, "\t%d)\n", j
);
356 cifs_dump_iface(m
, &ses
->iface_list
[j
]);
358 spin_unlock(&ses
->iface_lock
);
361 spin_unlock(&cifs_tcp_ses_lock
);
364 /* BB add code to dump additional info such as TCP session info now */
368 static ssize_t
cifs_stats_proc_write(struct file
*file
,
369 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
373 struct list_head
*tmp1
, *tmp2
, *tmp3
;
374 struct TCP_Server_Info
*server
;
375 struct cifs_ses
*ses
;
376 struct cifs_tcon
*tcon
;
378 rc
= kstrtobool_from_user(buffer
, count
, &bv
);
380 #ifdef CONFIG_CIFS_STATS2
383 atomic_set(&totBufAllocCount
, 0);
384 atomic_set(&totSmBufAllocCount
, 0);
385 #endif /* CONFIG_CIFS_STATS2 */
386 spin_lock(&GlobalMid_Lock
);
387 GlobalMaxActiveXid
= 0;
388 GlobalCurrentXid
= 0;
389 spin_unlock(&GlobalMid_Lock
);
390 spin_lock(&cifs_tcp_ses_lock
);
391 list_for_each(tmp1
, &cifs_tcp_ses_list
) {
392 server
= list_entry(tmp1
, struct TCP_Server_Info
,
394 #ifdef CONFIG_CIFS_STATS2
395 for (i
= 0; i
< NUMBER_OF_SMB2_COMMANDS
; i
++)
396 atomic_set(&server
->smb2slowcmd
[i
], 0);
397 #endif /* CONFIG_CIFS_STATS2 */
398 list_for_each(tmp2
, &server
->smb_ses_list
) {
399 ses
= list_entry(tmp2
, struct cifs_ses
,
401 list_for_each(tmp3
, &ses
->tcon_list
) {
402 tcon
= list_entry(tmp3
,
405 atomic_set(&tcon
->num_smbs_sent
, 0);
406 spin_lock(&tcon
->stat_lock
);
407 tcon
->bytes_read
= 0;
408 tcon
->bytes_written
= 0;
409 spin_unlock(&tcon
->stat_lock
);
410 if (server
->ops
->clear_stats
)
411 server
->ops
->clear_stats(tcon
);
415 spin_unlock(&cifs_tcp_ses_lock
);
423 static int cifs_stats_proc_show(struct seq_file
*m
, void *v
)
426 #ifdef CONFIG_CIFS_STATS2
429 struct list_head
*tmp1
, *tmp2
, *tmp3
;
430 struct TCP_Server_Info
*server
;
431 struct cifs_ses
*ses
;
432 struct cifs_tcon
*tcon
;
434 seq_printf(m
, "Resources in use\nCIFS Session: %d\n",
435 sesInfoAllocCount
.counter
);
436 seq_printf(m
, "Share (unique mount targets): %d\n",
437 tconInfoAllocCount
.counter
);
438 seq_printf(m
, "SMB Request/Response Buffer: %d Pool size: %d\n",
439 bufAllocCount
.counter
,
440 cifs_min_rcv
+ tcpSesAllocCount
.counter
);
441 seq_printf(m
, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
442 smBufAllocCount
.counter
, cifs_min_small
);
443 #ifdef CONFIG_CIFS_STATS2
444 seq_printf(m
, "Total Large %d Small %d Allocations\n",
445 atomic_read(&totBufAllocCount
),
446 atomic_read(&totSmBufAllocCount
));
447 #endif /* CONFIG_CIFS_STATS2 */
449 seq_printf(m
, "Operations (MIDs): %d\n", atomic_read(&midCount
));
451 "\n%d session %d share reconnects\n",
452 tcpSesReconnectCount
.counter
, tconInfoReconnectCount
.counter
);
455 "Total vfs operations: %d maximum at one time: %d\n",
456 GlobalCurrentXid
, GlobalMaxActiveXid
);
459 spin_lock(&cifs_tcp_ses_lock
);
460 list_for_each(tmp1
, &cifs_tcp_ses_list
) {
461 server
= list_entry(tmp1
, struct TCP_Server_Info
,
463 #ifdef CONFIG_CIFS_STATS2
464 for (j
= 0; j
< NUMBER_OF_SMB2_COMMANDS
; j
++)
465 if (atomic_read(&server
->smb2slowcmd
[j
]))
466 seq_printf(m
, "%d slow responses from %s for command %d\n",
467 atomic_read(&server
->smb2slowcmd
[j
]),
468 server
->hostname
, j
);
470 list_for_each(tmp2
, &server
->smb_ses_list
) {
471 ses
= list_entry(tmp2
, struct cifs_ses
,
473 list_for_each(tmp3
, &ses
->tcon_list
) {
474 tcon
= list_entry(tmp3
,
478 seq_printf(m
, "\n%d) %s", i
, tcon
->treeName
);
479 if (tcon
->need_reconnect
)
480 seq_puts(m
, "\tDISCONNECTED ");
481 seq_printf(m
, "\nSMBs: %d",
482 atomic_read(&tcon
->num_smbs_sent
));
483 if (server
->ops
->print_stats
)
484 server
->ops
->print_stats(m
, tcon
);
488 spin_unlock(&cifs_tcp_ses_lock
);
494 static int cifs_stats_proc_open(struct inode
*inode
, struct file
*file
)
496 return single_open(file
, cifs_stats_proc_show
, NULL
);
499 static const struct file_operations cifs_stats_proc_fops
= {
500 .open
= cifs_stats_proc_open
,
503 .release
= single_release
,
504 .write
= cifs_stats_proc_write
,
507 #ifdef CONFIG_CIFS_SMB_DIRECT
508 #define PROC_FILE_DEFINE(name) \
509 static ssize_t name##_write(struct file *file, const char __user *buffer, \
510 size_t count, loff_t *ppos) \
513 rc = kstrtoint_from_user(buffer, count, 10, & name); \
518 static int name##_proc_show(struct seq_file *m, void *v) \
520 seq_printf(m, "%d\n", name ); \
523 static int name##_open(struct inode *inode, struct file *file) \
525 return single_open(file, name##_proc_show, NULL); \
528 static const struct file_operations cifs_##name##_proc_fops = { \
529 .open = name##_open, \
531 .llseek = seq_lseek, \
532 .release = single_release, \
533 .write = name##_write, \
536 PROC_FILE_DEFINE(rdma_readwrite_threshold
);
537 PROC_FILE_DEFINE(smbd_max_frmr_depth
);
538 PROC_FILE_DEFINE(smbd_keep_alive_interval
);
539 PROC_FILE_DEFINE(smbd_max_receive_size
);
540 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size
);
541 PROC_FILE_DEFINE(smbd_max_send_size
);
542 PROC_FILE_DEFINE(smbd_send_credit_target
);
543 PROC_FILE_DEFINE(smbd_receive_credit_max
);
546 static struct proc_dir_entry
*proc_fs_cifs
;
547 static const struct file_operations cifsFYI_proc_fops
;
548 static const struct file_operations cifs_lookup_cache_proc_fops
;
549 static const struct file_operations traceSMB_proc_fops
;
550 static const struct file_operations cifs_security_flags_proc_fops
;
551 static const struct file_operations cifs_linux_ext_proc_fops
;
556 proc_fs_cifs
= proc_mkdir("fs/cifs", NULL
);
557 if (proc_fs_cifs
== NULL
)
560 proc_create_single("DebugData", 0, proc_fs_cifs
,
561 cifs_debug_data_proc_show
);
563 proc_create("Stats", 0644, proc_fs_cifs
, &cifs_stats_proc_fops
);
564 proc_create("cifsFYI", 0644, proc_fs_cifs
, &cifsFYI_proc_fops
);
565 proc_create("traceSMB", 0644, proc_fs_cifs
, &traceSMB_proc_fops
);
566 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs
,
567 &cifs_linux_ext_proc_fops
);
568 proc_create("SecurityFlags", 0644, proc_fs_cifs
,
569 &cifs_security_flags_proc_fops
);
570 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs
,
571 &cifs_lookup_cache_proc_fops
);
572 #ifdef CONFIG_CIFS_SMB_DIRECT
573 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs
,
574 &cifs_rdma_readwrite_threshold_proc_fops
);
575 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs
,
576 &cifs_smbd_max_frmr_depth_proc_fops
);
577 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs
,
578 &cifs_smbd_keep_alive_interval_proc_fops
);
579 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs
,
580 &cifs_smbd_max_receive_size_proc_fops
);
581 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs
,
582 &cifs_smbd_max_fragmented_recv_size_proc_fops
);
583 proc_create("smbd_max_send_size", 0644, proc_fs_cifs
,
584 &cifs_smbd_max_send_size_proc_fops
);
585 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs
,
586 &cifs_smbd_send_credit_target_proc_fops
);
587 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs
,
588 &cifs_smbd_receive_credit_max_proc_fops
);
593 cifs_proc_clean(void)
595 if (proc_fs_cifs
== NULL
)
598 remove_proc_entry("DebugData", proc_fs_cifs
);
599 remove_proc_entry("cifsFYI", proc_fs_cifs
);
600 remove_proc_entry("traceSMB", proc_fs_cifs
);
601 remove_proc_entry("Stats", proc_fs_cifs
);
602 remove_proc_entry("SecurityFlags", proc_fs_cifs
);
603 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs
);
604 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs
);
605 #ifdef CONFIG_CIFS_SMB_DIRECT
606 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs
);
607 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs
);
608 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs
);
609 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs
);
610 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs
);
611 remove_proc_entry("smbd_max_send_size", proc_fs_cifs
);
612 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs
);
613 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs
);
615 remove_proc_entry("fs/cifs", NULL
);
618 static int cifsFYI_proc_show(struct seq_file
*m
, void *v
)
620 seq_printf(m
, "%d\n", cifsFYI
);
624 static int cifsFYI_proc_open(struct inode
*inode
, struct file
*file
)
626 return single_open(file
, cifsFYI_proc_show
, NULL
);
629 static ssize_t
cifsFYI_proc_write(struct file
*file
, const char __user
*buffer
,
630 size_t count
, loff_t
*ppos
)
632 char c
[2] = { '\0' };
636 rc
= get_user(c
[0], buffer
);
639 if (strtobool(c
, &bv
) == 0)
641 else if ((c
[0] > '1') && (c
[0] <= '9'))
642 cifsFYI
= (int) (c
[0] - '0'); /* see cifs_debug.h for meanings */
649 static const struct file_operations cifsFYI_proc_fops
= {
650 .open
= cifsFYI_proc_open
,
653 .release
= single_release
,
654 .write
= cifsFYI_proc_write
,
657 static int cifs_linux_ext_proc_show(struct seq_file
*m
, void *v
)
659 seq_printf(m
, "%d\n", linuxExtEnabled
);
663 static int cifs_linux_ext_proc_open(struct inode
*inode
, struct file
*file
)
665 return single_open(file
, cifs_linux_ext_proc_show
, NULL
);
668 static ssize_t
cifs_linux_ext_proc_write(struct file
*file
,
669 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
673 rc
= kstrtobool_from_user(buffer
, count
, &linuxExtEnabled
);
680 static const struct file_operations cifs_linux_ext_proc_fops
= {
681 .open
= cifs_linux_ext_proc_open
,
684 .release
= single_release
,
685 .write
= cifs_linux_ext_proc_write
,
688 static int cifs_lookup_cache_proc_show(struct seq_file
*m
, void *v
)
690 seq_printf(m
, "%d\n", lookupCacheEnabled
);
694 static int cifs_lookup_cache_proc_open(struct inode
*inode
, struct file
*file
)
696 return single_open(file
, cifs_lookup_cache_proc_show
, NULL
);
699 static ssize_t
cifs_lookup_cache_proc_write(struct file
*file
,
700 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
704 rc
= kstrtobool_from_user(buffer
, count
, &lookupCacheEnabled
);
711 static const struct file_operations cifs_lookup_cache_proc_fops
= {
712 .open
= cifs_lookup_cache_proc_open
,
715 .release
= single_release
,
716 .write
= cifs_lookup_cache_proc_write
,
719 static int traceSMB_proc_show(struct seq_file
*m
, void *v
)
721 seq_printf(m
, "%d\n", traceSMB
);
725 static int traceSMB_proc_open(struct inode
*inode
, struct file
*file
)
727 return single_open(file
, traceSMB_proc_show
, NULL
);
730 static ssize_t
traceSMB_proc_write(struct file
*file
, const char __user
*buffer
,
731 size_t count
, loff_t
*ppos
)
735 rc
= kstrtobool_from_user(buffer
, count
, &traceSMB
);
742 static const struct file_operations traceSMB_proc_fops
= {
743 .open
= traceSMB_proc_open
,
746 .release
= single_release
,
747 .write
= traceSMB_proc_write
,
750 static int cifs_security_flags_proc_show(struct seq_file
*m
, void *v
)
752 seq_printf(m
, "0x%x\n", global_secflags
);
756 static int cifs_security_flags_proc_open(struct inode
*inode
, struct file
*file
)
758 return single_open(file
, cifs_security_flags_proc_show
, NULL
);
762 * Ensure that if someone sets a MUST flag, that we disable all other MAY
763 * flags except for the ones corresponding to the given MUST flag. If there are
764 * multiple MUST flags, then try to prefer more secure ones.
767 cifs_security_flags_handle_must_flags(unsigned int *flags
)
769 unsigned int signflags
= *flags
& CIFSSEC_MUST_SIGN
;
771 if ((*flags
& CIFSSEC_MUST_KRB5
) == CIFSSEC_MUST_KRB5
)
772 *flags
= CIFSSEC_MUST_KRB5
;
773 else if ((*flags
& CIFSSEC_MUST_NTLMSSP
) == CIFSSEC_MUST_NTLMSSP
)
774 *flags
= CIFSSEC_MUST_NTLMSSP
;
775 else if ((*flags
& CIFSSEC_MUST_NTLMV2
) == CIFSSEC_MUST_NTLMV2
)
776 *flags
= CIFSSEC_MUST_NTLMV2
;
777 else if ((*flags
& CIFSSEC_MUST_NTLM
) == CIFSSEC_MUST_NTLM
)
778 *flags
= CIFSSEC_MUST_NTLM
;
779 else if (CIFSSEC_MUST_LANMAN
&&
780 (*flags
& CIFSSEC_MUST_LANMAN
) == CIFSSEC_MUST_LANMAN
)
781 *flags
= CIFSSEC_MUST_LANMAN
;
782 else if (CIFSSEC_MUST_PLNTXT
&&
783 (*flags
& CIFSSEC_MUST_PLNTXT
) == CIFSSEC_MUST_PLNTXT
)
784 *flags
= CIFSSEC_MUST_PLNTXT
;
789 static ssize_t
cifs_security_flags_proc_write(struct file
*file
,
790 const char __user
*buffer
, size_t count
, loff_t
*ppos
)
794 char flags_string
[12];
797 if ((count
< 1) || (count
> 11))
800 memset(flags_string
, 0, 12);
802 if (copy_from_user(flags_string
, buffer
, count
))
806 /* single char or single char followed by null */
807 if (strtobool(flags_string
, &bv
) == 0) {
808 global_secflags
= bv
? CIFSSEC_MAX
: CIFSSEC_DEF
;
810 } else if (!isdigit(flags_string
[0])) {
811 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n",
817 /* else we have a number */
818 rc
= kstrtouint(flags_string
, 0, &flags
);
820 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n",
825 cifs_dbg(FYI
, "sec flags 0x%x\n", flags
);
828 cifs_dbg(VFS
, "Invalid SecurityFlags: %s\n", flags_string
);
832 if (flags
& ~CIFSSEC_MASK
) {
833 cifs_dbg(VFS
, "Unsupported security flags: 0x%x\n",
834 flags
& ~CIFSSEC_MASK
);
838 cifs_security_flags_handle_must_flags(&flags
);
840 /* flags look ok - update the global security flags for cifs module */
841 global_secflags
= flags
;
842 if (global_secflags
& CIFSSEC_MUST_SIGN
) {
843 /* requiring signing implies signing is allowed */
844 global_secflags
|= CIFSSEC_MAY_SIGN
;
845 cifs_dbg(FYI
, "packet signing now required\n");
846 } else if ((global_secflags
& CIFSSEC_MAY_SIGN
) == 0) {
847 cifs_dbg(FYI
, "packet signing disabled\n");
849 /* BB should we turn on MAY flags for other MUST options? */
853 static const struct file_operations cifs_security_flags_proc_fops
= {
854 .open
= cifs_security_flags_proc_open
,
857 .release
= single_release
,
858 .write
= cifs_security_flags_proc_write
,
861 inline void cifs_proc_init(void)
865 inline void cifs_proc_clean(void)