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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Copyright (C) International Business Machines Corp., 2000,2005
5 *
6 * Modified by Steve French (sfrench@us.ibm.com)
7 */
8#include <linux/fs.h>
9#include <linux/string.h>
10#include <linux/ctype.h>
11#include <linux/kstrtox.h>
12#include <linux/module.h>
13#include <linux/proc_fs.h>
14#include <linux/uaccess.h>
15#include <uapi/linux/ethtool.h>
16#include "cifspdu.h"
17#include "cifsglob.h"
18#include "cifsproto.h"
19#include "cifs_debug.h"
20#include "cifsfs.h"
21#include "fs_context.h"
22#ifdef CONFIG_CIFS_DFS_UPCALL
23#include "dfs_cache.h"
24#endif
25#ifdef CONFIG_CIFS_SMB_DIRECT
26#include "smbdirect.h"
27#endif
28#include "cifs_swn.h"
29
30void
31cifs_dump_mem(char *label, void *data, int length)
32{
33 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
34 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
35 data, length, true);
36}
37
38void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
39{
40#ifdef CONFIG_CIFS_DEBUG2
41 struct smb_hdr *smb = buf;
42
43 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d Wct: %d\n",
44 smb->Command, smb->Status.CifsError, smb->Flags,
45 smb->Flags2, smb->Mid, smb->Pid, smb->WordCount);
46 if (!server->ops->check_message(buf, server->total_read, server)) {
47 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
48 server->ops->calc_smb_size(smb));
49 }
50#endif /* CONFIG_CIFS_DEBUG2 */
51}
52
53void cifs_dump_mids(struct TCP_Server_Info *server)
54{
55#ifdef CONFIG_CIFS_DEBUG2
56 struct mid_q_entry *mid_entry;
57
58 if (server == NULL)
59 return;
60
61 cifs_dbg(VFS, "Dump pending requests:\n");
62 spin_lock(&server->mid_lock);
63 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
64 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
65 mid_entry->mid_state,
66 le16_to_cpu(mid_entry->command),
67 mid_entry->pid,
68 mid_entry->callback_data,
69 mid_entry->mid);
70#ifdef CONFIG_CIFS_STATS2
71 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
72 mid_entry->large_buf,
73 mid_entry->resp_buf,
74 mid_entry->when_received,
75 jiffies);
76#endif /* STATS2 */
77 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
78 mid_entry->multiRsp, mid_entry->multiEnd);
79 if (mid_entry->resp_buf) {
80 cifs_dump_detail(mid_entry->resp_buf, server);
81 cifs_dump_mem("existing buf: ",
82 mid_entry->resp_buf, 62);
83 }
84 }
85 spin_unlock(&server->mid_lock);
86#endif /* CONFIG_CIFS_DEBUG2 */
87}
88
89#ifdef CONFIG_PROC_FS
90static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
91{
92 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
93
94 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
95 if (tcon->nativeFileSystem)
96 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
97 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
98 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
99 le32_to_cpu(tcon->fsAttrInfo.Attributes),
100 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
101 tcon->status);
102 if (dev_type == FILE_DEVICE_DISK)
103 seq_puts(m, " type: DISK ");
104 else if (dev_type == FILE_DEVICE_CD_ROM)
105 seq_puts(m, " type: CDROM ");
106 else
107 seq_printf(m, " type: %d ", dev_type);
108
109 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
110
111 if ((tcon->seal) ||
112 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
113 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
114 seq_puts(m, " encrypted");
115 if (tcon->nocase)
116 seq_printf(m, " nocase");
117 if (tcon->unix_ext)
118 seq_printf(m, " POSIX Extensions");
119 if (tcon->ses->server->ops->dump_share_caps)
120 tcon->ses->server->ops->dump_share_caps(m, tcon);
121 if (tcon->use_witness)
122 seq_puts(m, " Witness");
123 if (tcon->broken_sparse_sup)
124 seq_puts(m, " nosparse");
125 if (tcon->need_reconnect)
126 seq_puts(m, "\tDISCONNECTED ");
127 spin_lock(&tcon->tc_lock);
128 if (tcon->origin_fullpath) {
129 seq_printf(m, "\n\tDFS origin fullpath: %s",
130 tcon->origin_fullpath);
131 }
132 spin_unlock(&tcon->tc_lock);
133 seq_putc(m, '\n');
134}
135
136static void
137cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
138{
139 struct TCP_Server_Info *server = chan->server;
140
141 if (!server) {
142 seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1);
143 return;
144 }
145
146 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
147 "\n\t\tNumber of credits: %d,%d,%d Dialect 0x%x"
148 "\n\t\tTCP status: %d Instance: %d"
149 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
150 "\n\t\tIn Send: %d In MaxReq Wait: %d",
151 i+1, server->conn_id,
152 server->credits,
153 server->echo_credits,
154 server->oplock_credits,
155 server->dialect,
156 server->tcpStatus,
157 server->reconnect_instance,
158 server->srv_count,
159 server->sec_mode,
160 in_flight(server),
161 atomic_read(&server->in_send),
162 atomic_read(&server->num_waiters));
163#ifdef CONFIG_NET_NS
164 if (server->net)
165 seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
166#endif /* NET_NS */
167
168}
169
170static inline const char *smb_speed_to_str(size_t bps)
171{
172 size_t mbps = bps / 1000 / 1000;
173
174 switch (mbps) {
175 case SPEED_10:
176 return "10Mbps";
177 case SPEED_100:
178 return "100Mbps";
179 case SPEED_1000:
180 return "1Gbps";
181 case SPEED_2500:
182 return "2.5Gbps";
183 case SPEED_5000:
184 return "5Gbps";
185 case SPEED_10000:
186 return "10Gbps";
187 case SPEED_14000:
188 return "14Gbps";
189 case SPEED_20000:
190 return "20Gbps";
191 case SPEED_25000:
192 return "25Gbps";
193 case SPEED_40000:
194 return "40Gbps";
195 case SPEED_50000:
196 return "50Gbps";
197 case SPEED_56000:
198 return "56Gbps";
199 case SPEED_100000:
200 return "100Gbps";
201 case SPEED_200000:
202 return "200Gbps";
203 case SPEED_400000:
204 return "400Gbps";
205 case SPEED_800000:
206 return "800Gbps";
207 default:
208 return "Unknown";
209 }
210}
211
212static void
213cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
214{
215 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
216 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
217
218 seq_printf(m, "\tSpeed: %s\n", smb_speed_to_str(iface->speed));
219 seq_puts(m, "\t\tCapabilities: ");
220 if (iface->rdma_capable)
221 seq_puts(m, "rdma ");
222 if (iface->rss_capable)
223 seq_puts(m, "rss ");
224 if (!iface->rdma_capable && !iface->rss_capable)
225 seq_puts(m, "None");
226 seq_putc(m, '\n');
227 if (iface->sockaddr.ss_family == AF_INET)
228 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
229 else if (iface->sockaddr.ss_family == AF_INET6)
230 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
231 if (!iface->is_active)
232 seq_puts(m, "\t\t[for-cleanup]\n");
233}
234
235static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
236{
237 struct TCP_Server_Info *server;
238 struct cifs_ses *ses;
239 struct cifs_tcon *tcon;
240 struct cifsFileInfo *cfile;
241
242 seq_puts(m, "# Version:1\n");
243 seq_puts(m, "# Format:\n");
244 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
245#ifdef CONFIG_CIFS_DEBUG2
246 seq_printf(m, " <filename> <mid>\n");
247#else
248 seq_printf(m, " <filename>\n");
249#endif /* CIFS_DEBUG2 */
250 spin_lock(&cifs_tcp_ses_lock);
251 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
252 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
253 if (cifs_ses_exiting(ses))
254 continue;
255 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
256 spin_lock(&tcon->open_file_lock);
257 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
258 seq_printf(m,
259 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
260 tcon->tid,
261 ses->Suid,
262 cfile->fid.persistent_fid,
263 cfile->f_flags,
264 cfile->count,
265 cfile->pid,
266 from_kuid(&init_user_ns, cfile->uid),
267 cfile->dentry);
268#ifdef CONFIG_CIFS_DEBUG2
269 seq_printf(m, " %llu\n", cfile->fid.mid);
270#else
271 seq_printf(m, "\n");
272#endif /* CIFS_DEBUG2 */
273 }
274 spin_unlock(&tcon->open_file_lock);
275 }
276 }
277 }
278 spin_unlock(&cifs_tcp_ses_lock);
279 seq_putc(m, '\n');
280 return 0;
281}
282
283static __always_inline const char *compression_alg_str(__le16 alg)
284{
285 switch (alg) {
286 case SMB3_COMPRESS_NONE:
287 return "NONE";
288 case SMB3_COMPRESS_LZNT1:
289 return "LZNT1";
290 case SMB3_COMPRESS_LZ77:
291 return "LZ77";
292 case SMB3_COMPRESS_LZ77_HUFF:
293 return "LZ77-Huffman";
294 case SMB3_COMPRESS_PATTERN:
295 return "Pattern_V1";
296 default:
297 return "invalid";
298 }
299}
300
301static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
302{
303 struct mid_q_entry *mid_entry;
304 struct TCP_Server_Info *server;
305 struct TCP_Server_Info *chan_server;
306 struct cifs_ses *ses;
307 struct cifs_tcon *tcon;
308 struct cifs_server_iface *iface;
309 size_t iface_weight = 0, iface_min_speed = 0;
310 struct cifs_server_iface *last_iface = NULL;
311 int c, i, j;
312
313 seq_puts(m,
314 "Display Internal CIFS Data Structures for Debugging\n"
315 "---------------------------------------------------\n");
316 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
317 seq_printf(m, "Features:");
318#ifdef CONFIG_CIFS_DFS_UPCALL
319 seq_printf(m, " DFS");
320#endif
321#ifdef CONFIG_CIFS_FSCACHE
322 seq_printf(m, ",FSCACHE");
323#endif
324#ifdef CONFIG_CIFS_SMB_DIRECT
325 seq_printf(m, ",SMB_DIRECT");
326#endif
327#ifdef CONFIG_CIFS_STATS2
328 seq_printf(m, ",STATS2");
329#else
330 seq_printf(m, ",STATS");
331#endif
332#ifdef CONFIG_CIFS_DEBUG2
333 seq_printf(m, ",DEBUG2");
334#elif defined(CONFIG_CIFS_DEBUG)
335 seq_printf(m, ",DEBUG");
336#endif
337#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
338 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
339#endif
340#ifdef CONFIG_CIFS_POSIX
341 seq_printf(m, ",CIFS_POSIX");
342#endif
343#ifdef CONFIG_CIFS_UPCALL
344 seq_printf(m, ",UPCALL(SPNEGO)");
345#endif
346#ifdef CONFIG_CIFS_XATTR
347 seq_printf(m, ",XATTR");
348#endif
349 seq_printf(m, ",ACL");
350#ifdef CONFIG_CIFS_SWN_UPCALL
351 seq_puts(m, ",WITNESS");
352#endif
353#ifdef CONFIG_CIFS_COMPRESSION
354 seq_puts(m, ",COMPRESSION");
355#endif
356 seq_putc(m, '\n');
357 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
358 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
359
360 seq_printf(m, "\nServers: ");
361
362 c = 0;
363 spin_lock(&cifs_tcp_ses_lock);
364 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
365 /* channel info will be printed as a part of sessions below */
366 if (SERVER_IS_CHAN(server))
367 continue;
368
369 c++;
370 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
371 c, server->conn_id);
372
373 spin_lock(&server->srv_lock);
374 if (server->hostname)
375 seq_printf(m, "Hostname: %s ", server->hostname);
376 seq_printf(m, "\nClientGUID: %pUL", server->client_guid);
377 spin_unlock(&server->srv_lock);
378#ifdef CONFIG_CIFS_SMB_DIRECT
379 if (!server->rdma)
380 goto skip_rdma;
381
382 if (!server->smbd_conn) {
383 seq_printf(m, "\nSMBDirect transport not available");
384 goto skip_rdma;
385 }
386
387 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
388 "transport status: %x",
389 server->smbd_conn->protocol,
390 server->smbd_conn->transport_status);
391 seq_printf(m, "\nConn receive_credit_max: %x "
392 "send_credit_target: %x max_send_size: %x",
393 server->smbd_conn->receive_credit_max,
394 server->smbd_conn->send_credit_target,
395 server->smbd_conn->max_send_size);
396 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
397 "max_fragmented_send_size: %x max_receive_size:%x",
398 server->smbd_conn->max_fragmented_recv_size,
399 server->smbd_conn->max_fragmented_send_size,
400 server->smbd_conn->max_receive_size);
401 seq_printf(m, "\nConn keep_alive_interval: %x "
402 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
403 server->smbd_conn->keep_alive_interval,
404 server->smbd_conn->max_readwrite_size,
405 server->smbd_conn->rdma_readwrite_threshold);
406 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
407 "count_put_receive_buffer: %x count_send_empty: %x",
408 server->smbd_conn->count_get_receive_buffer,
409 server->smbd_conn->count_put_receive_buffer,
410 server->smbd_conn->count_send_empty);
411 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
412 "count_enqueue_reassembly_queue: %x "
413 "count_dequeue_reassembly_queue: %x "
414 "fragment_reassembly_remaining: %x "
415 "reassembly_data_length: %x "
416 "reassembly_queue_length: %x",
417 server->smbd_conn->count_reassembly_queue,
418 server->smbd_conn->count_enqueue_reassembly_queue,
419 server->smbd_conn->count_dequeue_reassembly_queue,
420 server->smbd_conn->fragment_reassembly_remaining,
421 server->smbd_conn->reassembly_data_length,
422 server->smbd_conn->reassembly_queue_length);
423 seq_printf(m, "\nCurrent Credits send_credits: %x "
424 "receive_credits: %x receive_credit_target: %x",
425 atomic_read(&server->smbd_conn->send_credits),
426 atomic_read(&server->smbd_conn->receive_credits),
427 server->smbd_conn->receive_credit_target);
428 seq_printf(m, "\nPending send_pending: %x ",
429 atomic_read(&server->smbd_conn->send_pending));
430 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
431 "count_empty_packet_queue: %x",
432 server->smbd_conn->count_receive_queue,
433 server->smbd_conn->count_empty_packet_queue);
434 seq_printf(m, "\nMR responder_resources: %x "
435 "max_frmr_depth: %x mr_type: %x",
436 server->smbd_conn->responder_resources,
437 server->smbd_conn->max_frmr_depth,
438 server->smbd_conn->mr_type);
439 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
440 atomic_read(&server->smbd_conn->mr_ready_count),
441 atomic_read(&server->smbd_conn->mr_used_count));
442skip_rdma:
443#endif
444 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x",
445 server->credits,
446 server->echo_credits,
447 server->oplock_credits,
448 server->dialect);
449 if (server->sign)
450 seq_printf(m, " signed");
451 if (server->posix_ext_supported)
452 seq_printf(m, " posix");
453 if (server->nosharesock)
454 seq_printf(m, " nosharesock");
455
456 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities);
457
458 if (server->rdma)
459 seq_printf(m, "\nRDMA ");
460 seq_printf(m, "\nTCP status: %d Instance: %d"
461 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
462 server->tcpStatus,
463 server->reconnect_instance,
464 server->srv_count,
465 server->sec_mode, in_flight(server));
466#ifdef CONFIG_NET_NS
467 if (server->net)
468 seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
469#endif /* NET_NS */
470
471 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
472 atomic_read(&server->in_send),
473 atomic_read(&server->num_waiters));
474
475 if (server->leaf_fullpath) {
476 seq_printf(m, "\nDFS leaf full path: %s",
477 server->leaf_fullpath);
478 }
479
480 seq_puts(m, "\nCompression: ");
481 if (!IS_ENABLED(CONFIG_CIFS_COMPRESSION))
482 seq_puts(m, "no built-in support");
483 else if (!server->compression.requested)
484 seq_puts(m, "disabled on mount");
485 else if (server->compression.enabled)
486 seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg));
487 else
488 seq_puts(m, "disabled (not supported by this server)");
489
490 seq_printf(m, "\n\n\tSessions: ");
491 i = 0;
492 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
493 spin_lock(&ses->ses_lock);
494 if (ses->ses_status == SES_EXITING) {
495 spin_unlock(&ses->ses_lock);
496 continue;
497 }
498 i++;
499 if ((ses->serverDomain == NULL) ||
500 (ses->serverOS == NULL) ||
501 (ses->serverNOS == NULL)) {
502 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
503 i, ses->ip_addr, ses->ses_count,
504 ses->capabilities, ses->ses_status);
505 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
506 seq_printf(m, "Guest ");
507 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
508 seq_printf(m, "Anonymous ");
509 } else {
510 seq_printf(m,
511 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
512 "\n\tNOS: %s\tCapability: 0x%x"
513 "\n\tSMB session status: %d ",
514 i, ses->ip_addr, ses->serverDomain,
515 ses->ses_count, ses->serverOS, ses->serverNOS,
516 ses->capabilities, ses->ses_status);
517 }
518 if (ses->expired_pwd)
519 seq_puts(m, "password no longer valid ");
520 spin_unlock(&ses->ses_lock);
521
522 seq_printf(m, "\n\tSecurity type: %s ",
523 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
524
525 /* dump session id helpful for use with network trace */
526 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
527 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
528 seq_puts(m, " encrypted");
529 /* can help in debugging to show encryption type */
530 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
531 seq_puts(m, "(gcm256)");
532 }
533 if (ses->sign)
534 seq_puts(m, " signed");
535
536 seq_printf(m, "\n\tUser: %d Cred User: %d",
537 from_kuid(&init_user_ns, ses->linux_uid),
538 from_kuid(&init_user_ns, ses->cred_uid));
539
540 if (ses->dfs_root_ses) {
541 seq_printf(m, "\n\tDFS root session id: 0x%llx",
542 ses->dfs_root_ses->Suid);
543 }
544
545 spin_lock(&ses->chan_lock);
546 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
547 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
548 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
549 seq_puts(m, "\t[RECONNECTING] ");
550
551 if (ses->chan_count > 1) {
552 seq_printf(m, "\n\n\tExtra Channels: %zu ",
553 ses->chan_count-1);
554 for (j = 1; j < ses->chan_count; j++) {
555 cifs_dump_channel(m, j, &ses->chans[j]);
556 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
557 seq_puts(m, "\tDISCONNECTED ");
558 if (CIFS_CHAN_IN_RECONNECT(ses, j))
559 seq_puts(m, "\t[RECONNECTING] ");
560 }
561 }
562 spin_unlock(&ses->chan_lock);
563
564 seq_puts(m, "\n\n\tShares: ");
565 j = 0;
566
567 seq_printf(m, "\n\t%d) IPC: ", j);
568 if (ses->tcon_ipc)
569 cifs_debug_tcon(m, ses->tcon_ipc);
570 else
571 seq_puts(m, "none\n");
572
573 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
574 ++j;
575 seq_printf(m, "\n\t%d) ", j);
576 cifs_debug_tcon(m, tcon);
577 }
578
579 spin_lock(&ses->iface_lock);
580 if (ses->iface_count)
581 seq_printf(m, "\n\n\tServer interfaces: %zu"
582 "\tLast updated: %lu seconds ago",
583 ses->iface_count,
584 (jiffies - ses->iface_last_update) / HZ);
585
586 last_iface = list_last_entry(&ses->iface_list,
587 struct cifs_server_iface,
588 iface_head);
589 iface_min_speed = last_iface->speed;
590
591 j = 0;
592 list_for_each_entry(iface, &ses->iface_list,
593 iface_head) {
594 seq_printf(m, "\n\t%d)", ++j);
595 cifs_dump_iface(m, iface);
596
597 iface_weight = iface->speed / iface_min_speed;
598 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)"
599 "\n\t\tAllocated channels: %u\n",
600 iface->weight_fulfilled,
601 iface_weight,
602 iface->num_channels);
603
604 if (is_ses_using_iface(ses, iface))
605 seq_puts(m, "\t\t[CONNECTED]\n");
606 }
607 spin_unlock(&ses->iface_lock);
608
609 seq_puts(m, "\n\n\tMIDs: ");
610 spin_lock(&ses->chan_lock);
611 for (j = 0; j < ses->chan_count; j++) {
612 chan_server = ses->chans[j].server;
613 if (!chan_server)
614 continue;
615
616 if (list_empty(&chan_server->pending_mid_q))
617 continue;
618
619 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
620 chan_server->conn_id);
621 spin_lock(&chan_server->mid_lock);
622 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
623 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
624 mid_entry->mid_state,
625 le16_to_cpu(mid_entry->command),
626 mid_entry->pid,
627 mid_entry->callback_data,
628 mid_entry->mid);
629 }
630 spin_unlock(&chan_server->mid_lock);
631 }
632 spin_unlock(&ses->chan_lock);
633 seq_puts(m, "\n--\n");
634 }
635 if (i == 0)
636 seq_printf(m, "\n\t\t[NONE]");
637 }
638 if (c == 0)
639 seq_printf(m, "\n\t[NONE]");
640
641 spin_unlock(&cifs_tcp_ses_lock);
642 seq_putc(m, '\n');
643 cifs_swn_dump(m);
644
645 /* BB add code to dump additional info such as TCP session info now */
646 return 0;
647}
648
649static ssize_t cifs_stats_proc_write(struct file *file,
650 const char __user *buffer, size_t count, loff_t *ppos)
651{
652 bool bv;
653 int rc;
654 struct TCP_Server_Info *server;
655 struct cifs_ses *ses;
656 struct cifs_tcon *tcon;
657
658 rc = kstrtobool_from_user(buffer, count, &bv);
659 if (rc == 0) {
660#ifdef CONFIG_CIFS_STATS2
661 int i;
662
663 atomic_set(&total_buf_alloc_count, 0);
664 atomic_set(&total_small_buf_alloc_count, 0);
665#endif /* CONFIG_CIFS_STATS2 */
666 atomic_set(&tcpSesReconnectCount, 0);
667 atomic_set(&tconInfoReconnectCount, 0);
668
669 spin_lock(&GlobalMid_Lock);
670 GlobalMaxActiveXid = 0;
671 GlobalCurrentXid = 0;
672 spin_unlock(&GlobalMid_Lock);
673 spin_lock(&cifs_tcp_ses_lock);
674 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
675 server->max_in_flight = 0;
676#ifdef CONFIG_CIFS_STATS2
677 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
678 atomic_set(&server->num_cmds[i], 0);
679 atomic_set(&server->smb2slowcmd[i], 0);
680 server->time_per_cmd[i] = 0;
681 server->slowest_cmd[i] = 0;
682 server->fastest_cmd[0] = 0;
683 }
684#endif /* CONFIG_CIFS_STATS2 */
685 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
686 if (cifs_ses_exiting(ses))
687 continue;
688 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
689 atomic_set(&tcon->num_smbs_sent, 0);
690 spin_lock(&tcon->stat_lock);
691 tcon->bytes_read = 0;
692 tcon->bytes_written = 0;
693 tcon->stats_from_time = ktime_get_real_seconds();
694 spin_unlock(&tcon->stat_lock);
695 if (server->ops->clear_stats)
696 server->ops->clear_stats(tcon);
697 }
698 }
699 }
700 spin_unlock(&cifs_tcp_ses_lock);
701 } else {
702 return rc;
703 }
704
705 return count;
706}
707
708static int cifs_stats_proc_show(struct seq_file *m, void *v)
709{
710 int i;
711#ifdef CONFIG_CIFS_STATS2
712 int j;
713#endif /* STATS2 */
714 struct TCP_Server_Info *server;
715 struct cifs_ses *ses;
716 struct cifs_tcon *tcon;
717
718 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
719 sesInfoAllocCount.counter);
720 seq_printf(m, "Share (unique mount targets): %d\n",
721 tconInfoAllocCount.counter);
722 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
723 buf_alloc_count.counter,
724 cifs_min_rcv + tcpSesAllocCount.counter);
725 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
726 small_buf_alloc_count.counter, cifs_min_small);
727#ifdef CONFIG_CIFS_STATS2
728 seq_printf(m, "Total Large %d Small %d Allocations\n",
729 atomic_read(&total_buf_alloc_count),
730 atomic_read(&total_small_buf_alloc_count));
731#endif /* CONFIG_CIFS_STATS2 */
732
733 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
734 seq_printf(m,
735 "\n%d session %d share reconnects\n",
736 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
737
738 seq_printf(m,
739 "Total vfs operations: %d maximum at one time: %d\n",
740 GlobalCurrentXid, GlobalMaxActiveXid);
741
742 i = 0;
743 spin_lock(&cifs_tcp_ses_lock);
744 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
745 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
746#ifdef CONFIG_CIFS_STATS2
747 seq_puts(m, "\nTotal time spent processing by command. Time ");
748 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
749 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
750 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
751 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
752 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
753 atomic_read(&server->num_cmds[j]),
754 server->time_per_cmd[j],
755 server->fastest_cmd[j],
756 server->slowest_cmd[j]);
757 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
758 if (atomic_read(&server->smb2slowcmd[j])) {
759 spin_lock(&server->srv_lock);
760 seq_printf(m, " %d slow responses from %s for command %d\n",
761 atomic_read(&server->smb2slowcmd[j]),
762 server->hostname, j);
763 spin_unlock(&server->srv_lock);
764 }
765#endif /* STATS2 */
766 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
767 if (cifs_ses_exiting(ses))
768 continue;
769 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
770 i++;
771 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
772 if (tcon->need_reconnect)
773 seq_puts(m, "\tDISCONNECTED ");
774 seq_printf(m, "\nSMBs: %d since %ptTs UTC",
775 atomic_read(&tcon->num_smbs_sent),
776 &tcon->stats_from_time);
777 if (server->ops->print_stats)
778 server->ops->print_stats(m, tcon);
779 }
780 }
781 }
782 spin_unlock(&cifs_tcp_ses_lock);
783
784 seq_putc(m, '\n');
785 return 0;
786}
787
788static int cifs_stats_proc_open(struct inode *inode, struct file *file)
789{
790 return single_open(file, cifs_stats_proc_show, NULL);
791}
792
793static const struct proc_ops cifs_stats_proc_ops = {
794 .proc_open = cifs_stats_proc_open,
795 .proc_read = seq_read,
796 .proc_lseek = seq_lseek,
797 .proc_release = single_release,
798 .proc_write = cifs_stats_proc_write,
799};
800
801#ifdef CONFIG_CIFS_SMB_DIRECT
802#define PROC_FILE_DEFINE(name) \
803static ssize_t name##_write(struct file *file, const char __user *buffer, \
804 size_t count, loff_t *ppos) \
805{ \
806 int rc; \
807 rc = kstrtoint_from_user(buffer, count, 10, &name); \
808 if (rc) \
809 return rc; \
810 return count; \
811} \
812static int name##_proc_show(struct seq_file *m, void *v) \
813{ \
814 seq_printf(m, "%d\n", name); \
815 return 0; \
816} \
817static int name##_open(struct inode *inode, struct file *file) \
818{ \
819 return single_open(file, name##_proc_show, NULL); \
820} \
821\
822static const struct proc_ops cifs_##name##_proc_fops = { \
823 .proc_open = name##_open, \
824 .proc_read = seq_read, \
825 .proc_lseek = seq_lseek, \
826 .proc_release = single_release, \
827 .proc_write = name##_write, \
828}
829
830PROC_FILE_DEFINE(rdma_readwrite_threshold);
831PROC_FILE_DEFINE(smbd_max_frmr_depth);
832PROC_FILE_DEFINE(smbd_keep_alive_interval);
833PROC_FILE_DEFINE(smbd_max_receive_size);
834PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
835PROC_FILE_DEFINE(smbd_max_send_size);
836PROC_FILE_DEFINE(smbd_send_credit_target);
837PROC_FILE_DEFINE(smbd_receive_credit_max);
838#endif
839
840static struct proc_dir_entry *proc_fs_cifs;
841static const struct proc_ops cifsFYI_proc_ops;
842static const struct proc_ops cifs_lookup_cache_proc_ops;
843static const struct proc_ops traceSMB_proc_ops;
844static const struct proc_ops cifs_security_flags_proc_ops;
845static const struct proc_ops cifs_linux_ext_proc_ops;
846static const struct proc_ops cifs_mount_params_proc_ops;
847
848void
849cifs_proc_init(void)
850{
851 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
852 if (proc_fs_cifs == NULL)
853 return;
854
855 proc_create_single("DebugData", 0, proc_fs_cifs,
856 cifs_debug_data_proc_show);
857
858 proc_create_single("open_files", 0400, proc_fs_cifs,
859 cifs_debug_files_proc_show);
860
861 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
862 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
863 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
864 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
865 &cifs_linux_ext_proc_ops);
866 proc_create("SecurityFlags", 0644, proc_fs_cifs,
867 &cifs_security_flags_proc_ops);
868 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
869 &cifs_lookup_cache_proc_ops);
870
871 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
872
873#ifdef CONFIG_CIFS_DFS_UPCALL
874 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
875#endif
876
877#ifdef CONFIG_CIFS_SMB_DIRECT
878 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
879 &cifs_rdma_readwrite_threshold_proc_fops);
880 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
881 &cifs_smbd_max_frmr_depth_proc_fops);
882 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
883 &cifs_smbd_keep_alive_interval_proc_fops);
884 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
885 &cifs_smbd_max_receive_size_proc_fops);
886 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
887 &cifs_smbd_max_fragmented_recv_size_proc_fops);
888 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
889 &cifs_smbd_max_send_size_proc_fops);
890 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
891 &cifs_smbd_send_credit_target_proc_fops);
892 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
893 &cifs_smbd_receive_credit_max_proc_fops);
894#endif
895}
896
897void
898cifs_proc_clean(void)
899{
900 if (proc_fs_cifs == NULL)
901 return;
902
903 remove_proc_entry("DebugData", proc_fs_cifs);
904 remove_proc_entry("open_files", proc_fs_cifs);
905 remove_proc_entry("cifsFYI", proc_fs_cifs);
906 remove_proc_entry("traceSMB", proc_fs_cifs);
907 remove_proc_entry("Stats", proc_fs_cifs);
908 remove_proc_entry("SecurityFlags", proc_fs_cifs);
909 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
910 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
911 remove_proc_entry("mount_params", proc_fs_cifs);
912
913#ifdef CONFIG_CIFS_DFS_UPCALL
914 remove_proc_entry("dfscache", proc_fs_cifs);
915#endif
916#ifdef CONFIG_CIFS_SMB_DIRECT
917 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
918 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
919 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
920 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
921 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
922 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
923 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
924 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
925#endif
926 remove_proc_entry("fs/cifs", NULL);
927}
928
929static int cifsFYI_proc_show(struct seq_file *m, void *v)
930{
931 seq_printf(m, "%d\n", cifsFYI);
932 return 0;
933}
934
935static int cifsFYI_proc_open(struct inode *inode, struct file *file)
936{
937 return single_open(file, cifsFYI_proc_show, NULL);
938}
939
940static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
941 size_t count, loff_t *ppos)
942{
943 char c[2] = { '\0' };
944 bool bv;
945 int rc;
946
947 rc = get_user(c[0], buffer);
948 if (rc)
949 return rc;
950 if (kstrtobool(c, &bv) == 0)
951 cifsFYI = bv;
952 else if ((c[0] > '1') && (c[0] <= '9'))
953 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
954 else
955 return -EINVAL;
956
957 return count;
958}
959
960static const struct proc_ops cifsFYI_proc_ops = {
961 .proc_open = cifsFYI_proc_open,
962 .proc_read = seq_read,
963 .proc_lseek = seq_lseek,
964 .proc_release = single_release,
965 .proc_write = cifsFYI_proc_write,
966};
967
968static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
969{
970 seq_printf(m, "%d\n", linuxExtEnabled);
971 return 0;
972}
973
974static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
975{
976 return single_open(file, cifs_linux_ext_proc_show, NULL);
977}
978
979static ssize_t cifs_linux_ext_proc_write(struct file *file,
980 const char __user *buffer, size_t count, loff_t *ppos)
981{
982 int rc;
983
984 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
985 if (rc)
986 return rc;
987
988 return count;
989}
990
991static const struct proc_ops cifs_linux_ext_proc_ops = {
992 .proc_open = cifs_linux_ext_proc_open,
993 .proc_read = seq_read,
994 .proc_lseek = seq_lseek,
995 .proc_release = single_release,
996 .proc_write = cifs_linux_ext_proc_write,
997};
998
999static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
1000{
1001 seq_printf(m, "%d\n", lookupCacheEnabled);
1002 return 0;
1003}
1004
1005static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
1006{
1007 return single_open(file, cifs_lookup_cache_proc_show, NULL);
1008}
1009
1010static ssize_t cifs_lookup_cache_proc_write(struct file *file,
1011 const char __user *buffer, size_t count, loff_t *ppos)
1012{
1013 int rc;
1014
1015 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
1016 if (rc)
1017 return rc;
1018
1019 return count;
1020}
1021
1022static const struct proc_ops cifs_lookup_cache_proc_ops = {
1023 .proc_open = cifs_lookup_cache_proc_open,
1024 .proc_read = seq_read,
1025 .proc_lseek = seq_lseek,
1026 .proc_release = single_release,
1027 .proc_write = cifs_lookup_cache_proc_write,
1028};
1029
1030static int traceSMB_proc_show(struct seq_file *m, void *v)
1031{
1032 seq_printf(m, "%d\n", traceSMB);
1033 return 0;
1034}
1035
1036static int traceSMB_proc_open(struct inode *inode, struct file *file)
1037{
1038 return single_open(file, traceSMB_proc_show, NULL);
1039}
1040
1041static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
1042 size_t count, loff_t *ppos)
1043{
1044 int rc;
1045
1046 rc = kstrtobool_from_user(buffer, count, &traceSMB);
1047 if (rc)
1048 return rc;
1049
1050 return count;
1051}
1052
1053static const struct proc_ops traceSMB_proc_ops = {
1054 .proc_open = traceSMB_proc_open,
1055 .proc_read = seq_read,
1056 .proc_lseek = seq_lseek,
1057 .proc_release = single_release,
1058 .proc_write = traceSMB_proc_write,
1059};
1060
1061static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
1062{
1063 seq_printf(m, "0x%x\n", global_secflags);
1064 return 0;
1065}
1066
1067static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
1068{
1069 return single_open(file, cifs_security_flags_proc_show, NULL);
1070}
1071
1072/*
1073 * Ensure that if someone sets a MUST flag, that we disable all other MAY
1074 * flags except for the ones corresponding to the given MUST flag. If there are
1075 * multiple MUST flags, then try to prefer more secure ones.
1076 */
1077static void
1078cifs_security_flags_handle_must_flags(unsigned int *flags)
1079{
1080 unsigned int signflags = *flags & (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL);
1081
1082 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
1083 *flags = CIFSSEC_MUST_KRB5;
1084 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
1085 *flags = CIFSSEC_MUST_NTLMSSP;
1086 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
1087 *flags = CIFSSEC_MUST_NTLMV2;
1088
1089 *flags |= signflags;
1090}
1091
1092static ssize_t cifs_security_flags_proc_write(struct file *file,
1093 const char __user *buffer, size_t count, loff_t *ppos)
1094{
1095 int rc;
1096 unsigned int flags;
1097 char flags_string[12];
1098 bool bv;
1099
1100 if ((count < 1) || (count > 11))
1101 return -EINVAL;
1102
1103 memset(flags_string, 0, 12);
1104
1105 if (copy_from_user(flags_string, buffer, count))
1106 return -EFAULT;
1107
1108 if (count < 3) {
1109 /* single char or single char followed by null */
1110 if (kstrtobool(flags_string, &bv) == 0) {
1111 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
1112 return count;
1113 } else if (!isdigit(flags_string[0])) {
1114 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1115 flags_string);
1116 return -EINVAL;
1117 }
1118 }
1119
1120 /* else we have a number */
1121 rc = kstrtouint(flags_string, 0, &flags);
1122 if (rc) {
1123 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1124 flags_string);
1125 return rc;
1126 }
1127
1128 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
1129
1130 if (flags == 0) {
1131 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
1132 return -EINVAL;
1133 }
1134
1135 if (flags & ~CIFSSEC_MASK) {
1136 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
1137 flags & ~CIFSSEC_MASK);
1138 return -EINVAL;
1139 }
1140
1141 cifs_security_flags_handle_must_flags(&flags);
1142
1143 /* flags look ok - update the global security flags for cifs module */
1144 global_secflags = flags;
1145 if (global_secflags & CIFSSEC_MUST_SIGN) {
1146 /* requiring signing implies signing is allowed */
1147 global_secflags |= CIFSSEC_MAY_SIGN;
1148 cifs_dbg(FYI, "packet signing now required\n");
1149 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1150 cifs_dbg(FYI, "packet signing disabled\n");
1151 }
1152 /* BB should we turn on MAY flags for other MUST options? */
1153 return count;
1154}
1155
1156static const struct proc_ops cifs_security_flags_proc_ops = {
1157 .proc_open = cifs_security_flags_proc_open,
1158 .proc_read = seq_read,
1159 .proc_lseek = seq_lseek,
1160 .proc_release = single_release,
1161 .proc_write = cifs_security_flags_proc_write,
1162};
1163
1164/* To make it easier to debug, can help to show mount params */
1165static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1166{
1167 const struct fs_parameter_spec *p;
1168 const char *type;
1169
1170 for (p = smb3_fs_parameters; p->name; p++) {
1171 /* cannot use switch with pointers... */
1172 if (!p->type) {
1173 if (p->flags == fs_param_neg_with_no)
1174 type = "noflag";
1175 else
1176 type = "flag";
1177 } else if (p->type == fs_param_is_bool)
1178 type = "bool";
1179 else if (p->type == fs_param_is_u32)
1180 type = "u32";
1181 else if (p->type == fs_param_is_u64)
1182 type = "u64";
1183 else if (p->type == fs_param_is_string)
1184 type = "string";
1185 else
1186 type = "unknown";
1187
1188 seq_printf(m, "%s:%s\n", p->name, type);
1189 }
1190
1191 return 0;
1192}
1193
1194static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1195{
1196 return single_open(file, cifs_mount_params_proc_show, NULL);
1197}
1198
1199static const struct proc_ops cifs_mount_params_proc_ops = {
1200 .proc_open = cifs_mount_params_proc_open,
1201 .proc_read = seq_read,
1202 .proc_lseek = seq_lseek,
1203 .proc_release = single_release,
1204 /* No need for write for now */
1205 /* .proc_write = cifs_mount_params_proc_write, */
1206};
1207
1208#else
1209inline void cifs_proc_init(void)
1210{
1211}
1212
1213inline void cifs_proc_clean(void)
1214{
1215}
1216#endif /* PROC_FS */