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
30 void
cifs_dump_mem(char * label,void * data,int length)31 cifs_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
cifs_dump_detail(void * buf,struct TCP_Server_Info * server)38 void 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
cifs_dump_mids(struct TCP_Server_Info * server)53 void 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
cifs_debug_tcon(struct seq_file * m,struct cifs_tcon * tcon)90 static 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
136 static void
cifs_dump_channel(struct seq_file * m,int i,struct cifs_chan * chan)137 cifs_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
smb_speed_to_str(size_t bps)170 static 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
212 static void
cifs_dump_iface(struct seq_file * m,struct cifs_server_iface * iface)213 cifs_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
cifs_debug_files_proc_show(struct seq_file * m,void * v)235 static 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 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
254 spin_lock(&tcon->open_file_lock);
255 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
256 seq_printf(m,
257 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
258 tcon->tid,
259 ses->Suid,
260 cfile->fid.persistent_fid,
261 cfile->f_flags,
262 cfile->count,
263 cfile->pid,
264 from_kuid(&init_user_ns, cfile->uid),
265 cfile->dentry);
266 #ifdef CONFIG_CIFS_DEBUG2
267 seq_printf(m, " %llu\n", cfile->fid.mid);
268 #else
269 seq_printf(m, "\n");
270 #endif /* CIFS_DEBUG2 */
271 }
272 spin_unlock(&tcon->open_file_lock);
273 }
274 }
275 }
276 spin_unlock(&cifs_tcp_ses_lock);
277 seq_putc(m, '\n');
278 return 0;
279 }
280
cifs_debug_data_proc_show(struct seq_file * m,void * v)281 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
282 {
283 struct mid_q_entry *mid_entry;
284 struct TCP_Server_Info *server;
285 struct TCP_Server_Info *chan_server;
286 struct cifs_ses *ses;
287 struct cifs_tcon *tcon;
288 struct cifs_server_iface *iface;
289 size_t iface_weight = 0, iface_min_speed = 0;
290 struct cifs_server_iface *last_iface = NULL;
291 int c, i, j;
292
293 seq_puts(m,
294 "Display Internal CIFS Data Structures for Debugging\n"
295 "---------------------------------------------------\n");
296 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
297 seq_printf(m, "Features:");
298 #ifdef CONFIG_CIFS_DFS_UPCALL
299 seq_printf(m, " DFS");
300 #endif
301 #ifdef CONFIG_CIFS_FSCACHE
302 seq_printf(m, ",FSCACHE");
303 #endif
304 #ifdef CONFIG_CIFS_SMB_DIRECT
305 seq_printf(m, ",SMB_DIRECT");
306 #endif
307 #ifdef CONFIG_CIFS_STATS2
308 seq_printf(m, ",STATS2");
309 #else
310 seq_printf(m, ",STATS");
311 #endif
312 #ifdef CONFIG_CIFS_DEBUG2
313 seq_printf(m, ",DEBUG2");
314 #elif defined(CONFIG_CIFS_DEBUG)
315 seq_printf(m, ",DEBUG");
316 #endif
317 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
318 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
319 #endif
320 #ifdef CONFIG_CIFS_POSIX
321 seq_printf(m, ",CIFS_POSIX");
322 #endif
323 #ifdef CONFIG_CIFS_UPCALL
324 seq_printf(m, ",UPCALL(SPNEGO)");
325 #endif
326 #ifdef CONFIG_CIFS_XATTR
327 seq_printf(m, ",XATTR");
328 #endif
329 seq_printf(m, ",ACL");
330 #ifdef CONFIG_CIFS_SWN_UPCALL
331 seq_puts(m, ",WITNESS");
332 #endif
333 seq_putc(m, '\n');
334 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
335 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
336
337 seq_printf(m, "\nServers: ");
338
339 c = 0;
340 spin_lock(&cifs_tcp_ses_lock);
341 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
342 /* channel info will be printed as a part of sessions below */
343 if (SERVER_IS_CHAN(server))
344 continue;
345
346 c++;
347 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
348 c, server->conn_id);
349
350 spin_lock(&server->srv_lock);
351 if (server->hostname)
352 seq_printf(m, "Hostname: %s ", server->hostname);
353 seq_printf(m, "\nClientGUID: %pUL", server->client_guid);
354 spin_unlock(&server->srv_lock);
355 #ifdef CONFIG_CIFS_SMB_DIRECT
356 if (!server->rdma)
357 goto skip_rdma;
358
359 if (!server->smbd_conn) {
360 seq_printf(m, "\nSMBDirect transport not available");
361 goto skip_rdma;
362 }
363
364 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
365 "transport status: %x",
366 server->smbd_conn->protocol,
367 server->smbd_conn->transport_status);
368 seq_printf(m, "\nConn receive_credit_max: %x "
369 "send_credit_target: %x max_send_size: %x",
370 server->smbd_conn->receive_credit_max,
371 server->smbd_conn->send_credit_target,
372 server->smbd_conn->max_send_size);
373 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
374 "max_fragmented_send_size: %x max_receive_size:%x",
375 server->smbd_conn->max_fragmented_recv_size,
376 server->smbd_conn->max_fragmented_send_size,
377 server->smbd_conn->max_receive_size);
378 seq_printf(m, "\nConn keep_alive_interval: %x "
379 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
380 server->smbd_conn->keep_alive_interval,
381 server->smbd_conn->max_readwrite_size,
382 server->smbd_conn->rdma_readwrite_threshold);
383 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
384 "count_put_receive_buffer: %x count_send_empty: %x",
385 server->smbd_conn->count_get_receive_buffer,
386 server->smbd_conn->count_put_receive_buffer,
387 server->smbd_conn->count_send_empty);
388 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
389 "count_enqueue_reassembly_queue: %x "
390 "count_dequeue_reassembly_queue: %x "
391 "fragment_reassembly_remaining: %x "
392 "reassembly_data_length: %x "
393 "reassembly_queue_length: %x",
394 server->smbd_conn->count_reassembly_queue,
395 server->smbd_conn->count_enqueue_reassembly_queue,
396 server->smbd_conn->count_dequeue_reassembly_queue,
397 server->smbd_conn->fragment_reassembly_remaining,
398 server->smbd_conn->reassembly_data_length,
399 server->smbd_conn->reassembly_queue_length);
400 seq_printf(m, "\nCurrent Credits send_credits: %x "
401 "receive_credits: %x receive_credit_target: %x",
402 atomic_read(&server->smbd_conn->send_credits),
403 atomic_read(&server->smbd_conn->receive_credits),
404 server->smbd_conn->receive_credit_target);
405 seq_printf(m, "\nPending send_pending: %x ",
406 atomic_read(&server->smbd_conn->send_pending));
407 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
408 "count_empty_packet_queue: %x",
409 server->smbd_conn->count_receive_queue,
410 server->smbd_conn->count_empty_packet_queue);
411 seq_printf(m, "\nMR responder_resources: %x "
412 "max_frmr_depth: %x mr_type: %x",
413 server->smbd_conn->responder_resources,
414 server->smbd_conn->max_frmr_depth,
415 server->smbd_conn->mr_type);
416 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
417 atomic_read(&server->smbd_conn->mr_ready_count),
418 atomic_read(&server->smbd_conn->mr_used_count));
419 skip_rdma:
420 #endif
421 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x",
422 server->credits,
423 server->echo_credits,
424 server->oplock_credits,
425 server->dialect);
426 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
427 seq_printf(m, " COMPRESS_LZNT1");
428 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
429 seq_printf(m, " COMPRESS_LZ77");
430 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
431 seq_printf(m, " COMPRESS_LZ77_HUFF");
432 if (server->sign)
433 seq_printf(m, " signed");
434 if (server->posix_ext_supported)
435 seq_printf(m, " posix");
436 if (server->nosharesock)
437 seq_printf(m, " nosharesock");
438
439 if (server->rdma)
440 seq_printf(m, "\nRDMA ");
441 seq_printf(m, "\nTCP status: %d Instance: %d"
442 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
443 server->tcpStatus,
444 server->reconnect_instance,
445 server->srv_count,
446 server->sec_mode, in_flight(server));
447 #ifdef CONFIG_NET_NS
448 if (server->net)
449 seq_printf(m, " Net namespace: %u ", server->net->ns.inum);
450 #endif /* NET_NS */
451
452 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
453 atomic_read(&server->in_send),
454 atomic_read(&server->num_waiters));
455
456 if (server->leaf_fullpath) {
457 seq_printf(m, "\nDFS leaf full path: %s",
458 server->leaf_fullpath);
459 }
460
461 seq_printf(m, "\n\n\tSessions: ");
462 i = 0;
463 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
464 spin_lock(&ses->ses_lock);
465 if (ses->ses_status == SES_EXITING) {
466 spin_unlock(&ses->ses_lock);
467 continue;
468 }
469 i++;
470 if ((ses->serverDomain == NULL) ||
471 (ses->serverOS == NULL) ||
472 (ses->serverNOS == NULL)) {
473 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
474 i, ses->ip_addr, ses->ses_count,
475 ses->capabilities, ses->ses_status);
476 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
477 seq_printf(m, "Guest ");
478 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
479 seq_printf(m, "Anonymous ");
480 } else {
481 seq_printf(m,
482 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
483 "\n\tNOS: %s\tCapability: 0x%x"
484 "\n\tSMB session status: %d ",
485 i, ses->ip_addr, ses->serverDomain,
486 ses->ses_count, ses->serverOS, ses->serverNOS,
487 ses->capabilities, ses->ses_status);
488 }
489 spin_unlock(&ses->ses_lock);
490
491 seq_printf(m, "\n\tSecurity type: %s ",
492 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
493
494 /* dump session id helpful for use with network trace */
495 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
496 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
497 seq_puts(m, " encrypted");
498 /* can help in debugging to show encryption type */
499 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
500 seq_puts(m, "(gcm256)");
501 }
502 if (ses->sign)
503 seq_puts(m, " signed");
504
505 seq_printf(m, "\n\tUser: %d Cred User: %d",
506 from_kuid(&init_user_ns, ses->linux_uid),
507 from_kuid(&init_user_ns, ses->cred_uid));
508
509 if (ses->dfs_root_ses) {
510 seq_printf(m, "\n\tDFS root session id: 0x%llx",
511 ses->dfs_root_ses->Suid);
512 }
513
514 spin_lock(&ses->chan_lock);
515 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
516 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
517 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
518 seq_puts(m, "\t[RECONNECTING] ");
519
520 if (ses->chan_count > 1) {
521 seq_printf(m, "\n\n\tExtra Channels: %zu ",
522 ses->chan_count-1);
523 for (j = 1; j < ses->chan_count; j++) {
524 cifs_dump_channel(m, j, &ses->chans[j]);
525 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
526 seq_puts(m, "\tDISCONNECTED ");
527 if (CIFS_CHAN_IN_RECONNECT(ses, j))
528 seq_puts(m, "\t[RECONNECTING] ");
529 }
530 }
531 spin_unlock(&ses->chan_lock);
532
533 seq_puts(m, "\n\n\tShares: ");
534 j = 0;
535
536 seq_printf(m, "\n\t%d) IPC: ", j);
537 if (ses->tcon_ipc)
538 cifs_debug_tcon(m, ses->tcon_ipc);
539 else
540 seq_puts(m, "none\n");
541
542 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
543 ++j;
544 seq_printf(m, "\n\t%d) ", j);
545 cifs_debug_tcon(m, tcon);
546 }
547
548 spin_lock(&ses->iface_lock);
549 if (ses->iface_count)
550 seq_printf(m, "\n\n\tServer interfaces: %zu"
551 "\tLast updated: %lu seconds ago",
552 ses->iface_count,
553 (jiffies - ses->iface_last_update) / HZ);
554
555 last_iface = list_last_entry(&ses->iface_list,
556 struct cifs_server_iface,
557 iface_head);
558 iface_min_speed = last_iface->speed;
559
560 j = 0;
561 list_for_each_entry(iface, &ses->iface_list,
562 iface_head) {
563 seq_printf(m, "\n\t%d)", ++j);
564 cifs_dump_iface(m, iface);
565
566 iface_weight = iface->speed / iface_min_speed;
567 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)"
568 "\n\t\tAllocated channels: %u\n",
569 iface->weight_fulfilled,
570 iface_weight,
571 iface->num_channels);
572
573 if (is_ses_using_iface(ses, iface))
574 seq_puts(m, "\t\t[CONNECTED]\n");
575 }
576 spin_unlock(&ses->iface_lock);
577
578 seq_puts(m, "\n\n\tMIDs: ");
579 spin_lock(&ses->chan_lock);
580 for (j = 0; j < ses->chan_count; j++) {
581 chan_server = ses->chans[j].server;
582 if (!chan_server)
583 continue;
584
585 if (list_empty(&chan_server->pending_mid_q))
586 continue;
587
588 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
589 chan_server->conn_id);
590 spin_lock(&chan_server->mid_lock);
591 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
592 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
593 mid_entry->mid_state,
594 le16_to_cpu(mid_entry->command),
595 mid_entry->pid,
596 mid_entry->callback_data,
597 mid_entry->mid);
598 }
599 spin_unlock(&chan_server->mid_lock);
600 }
601 spin_unlock(&ses->chan_lock);
602 seq_puts(m, "\n--\n");
603 }
604 if (i == 0)
605 seq_printf(m, "\n\t\t[NONE]");
606 }
607 if (c == 0)
608 seq_printf(m, "\n\t[NONE]");
609
610 spin_unlock(&cifs_tcp_ses_lock);
611 seq_putc(m, '\n');
612 cifs_swn_dump(m);
613
614 /* BB add code to dump additional info such as TCP session info now */
615 return 0;
616 }
617
cifs_stats_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)618 static ssize_t cifs_stats_proc_write(struct file *file,
619 const char __user *buffer, size_t count, loff_t *ppos)
620 {
621 bool bv;
622 int rc;
623 struct TCP_Server_Info *server;
624 struct cifs_ses *ses;
625 struct cifs_tcon *tcon;
626
627 rc = kstrtobool_from_user(buffer, count, &bv);
628 if (rc == 0) {
629 #ifdef CONFIG_CIFS_STATS2
630 int i;
631
632 atomic_set(&total_buf_alloc_count, 0);
633 atomic_set(&total_small_buf_alloc_count, 0);
634 #endif /* CONFIG_CIFS_STATS2 */
635 atomic_set(&tcpSesReconnectCount, 0);
636 atomic_set(&tconInfoReconnectCount, 0);
637
638 spin_lock(&GlobalMid_Lock);
639 GlobalMaxActiveXid = 0;
640 GlobalCurrentXid = 0;
641 spin_unlock(&GlobalMid_Lock);
642 spin_lock(&cifs_tcp_ses_lock);
643 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
644 server->max_in_flight = 0;
645 #ifdef CONFIG_CIFS_STATS2
646 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
647 atomic_set(&server->num_cmds[i], 0);
648 atomic_set(&server->smb2slowcmd[i], 0);
649 server->time_per_cmd[i] = 0;
650 server->slowest_cmd[i] = 0;
651 server->fastest_cmd[0] = 0;
652 }
653 #endif /* CONFIG_CIFS_STATS2 */
654 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
655 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
656 atomic_set(&tcon->num_smbs_sent, 0);
657 spin_lock(&tcon->stat_lock);
658 tcon->bytes_read = 0;
659 tcon->bytes_written = 0;
660 spin_unlock(&tcon->stat_lock);
661 if (server->ops->clear_stats)
662 server->ops->clear_stats(tcon);
663 }
664 }
665 }
666 spin_unlock(&cifs_tcp_ses_lock);
667 } else {
668 return rc;
669 }
670
671 return count;
672 }
673
cifs_stats_proc_show(struct seq_file * m,void * v)674 static int cifs_stats_proc_show(struct seq_file *m, void *v)
675 {
676 int i;
677 #ifdef CONFIG_CIFS_STATS2
678 int j;
679 #endif /* STATS2 */
680 struct TCP_Server_Info *server;
681 struct cifs_ses *ses;
682 struct cifs_tcon *tcon;
683
684 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
685 sesInfoAllocCount.counter);
686 seq_printf(m, "Share (unique mount targets): %d\n",
687 tconInfoAllocCount.counter);
688 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
689 buf_alloc_count.counter,
690 cifs_min_rcv + tcpSesAllocCount.counter);
691 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
692 small_buf_alloc_count.counter, cifs_min_small);
693 #ifdef CONFIG_CIFS_STATS2
694 seq_printf(m, "Total Large %d Small %d Allocations\n",
695 atomic_read(&total_buf_alloc_count),
696 atomic_read(&total_small_buf_alloc_count));
697 #endif /* CONFIG_CIFS_STATS2 */
698
699 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
700 seq_printf(m,
701 "\n%d session %d share reconnects\n",
702 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
703
704 seq_printf(m,
705 "Total vfs operations: %d maximum at one time: %d\n",
706 GlobalCurrentXid, GlobalMaxActiveXid);
707
708 i = 0;
709 spin_lock(&cifs_tcp_ses_lock);
710 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
711 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
712 #ifdef CONFIG_CIFS_STATS2
713 seq_puts(m, "\nTotal time spent processing by command. Time ");
714 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
715 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
716 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
717 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
718 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
719 atomic_read(&server->num_cmds[j]),
720 server->time_per_cmd[j],
721 server->fastest_cmd[j],
722 server->slowest_cmd[j]);
723 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
724 if (atomic_read(&server->smb2slowcmd[j])) {
725 spin_lock(&server->srv_lock);
726 seq_printf(m, " %d slow responses from %s for command %d\n",
727 atomic_read(&server->smb2slowcmd[j]),
728 server->hostname, j);
729 spin_unlock(&server->srv_lock);
730 }
731 #endif /* STATS2 */
732 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
733 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
734 i++;
735 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
736 if (tcon->need_reconnect)
737 seq_puts(m, "\tDISCONNECTED ");
738 seq_printf(m, "\nSMBs: %d",
739 atomic_read(&tcon->num_smbs_sent));
740 if (server->ops->print_stats)
741 server->ops->print_stats(m, tcon);
742 }
743 }
744 }
745 spin_unlock(&cifs_tcp_ses_lock);
746
747 seq_putc(m, '\n');
748 return 0;
749 }
750
cifs_stats_proc_open(struct inode * inode,struct file * file)751 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
752 {
753 return single_open(file, cifs_stats_proc_show, NULL);
754 }
755
756 static const struct proc_ops cifs_stats_proc_ops = {
757 .proc_open = cifs_stats_proc_open,
758 .proc_read = seq_read,
759 .proc_lseek = seq_lseek,
760 .proc_release = single_release,
761 .proc_write = cifs_stats_proc_write,
762 };
763
764 #ifdef CONFIG_CIFS_SMB_DIRECT
765 #define PROC_FILE_DEFINE(name) \
766 static ssize_t name##_write(struct file *file, const char __user *buffer, \
767 size_t count, loff_t *ppos) \
768 { \
769 int rc; \
770 rc = kstrtoint_from_user(buffer, count, 10, & name); \
771 if (rc) \
772 return rc; \
773 return count; \
774 } \
775 static int name##_proc_show(struct seq_file *m, void *v) \
776 { \
777 seq_printf(m, "%d\n", name ); \
778 return 0; \
779 } \
780 static int name##_open(struct inode *inode, struct file *file) \
781 { \
782 return single_open(file, name##_proc_show, NULL); \
783 } \
784 \
785 static const struct proc_ops cifs_##name##_proc_fops = { \
786 .proc_open = name##_open, \
787 .proc_read = seq_read, \
788 .proc_lseek = seq_lseek, \
789 .proc_release = single_release, \
790 .proc_write = name##_write, \
791 }
792
793 PROC_FILE_DEFINE(rdma_readwrite_threshold);
794 PROC_FILE_DEFINE(smbd_max_frmr_depth);
795 PROC_FILE_DEFINE(smbd_keep_alive_interval);
796 PROC_FILE_DEFINE(smbd_max_receive_size);
797 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
798 PROC_FILE_DEFINE(smbd_max_send_size);
799 PROC_FILE_DEFINE(smbd_send_credit_target);
800 PROC_FILE_DEFINE(smbd_receive_credit_max);
801 #endif
802
803 static struct proc_dir_entry *proc_fs_cifs;
804 static const struct proc_ops cifsFYI_proc_ops;
805 static const struct proc_ops cifs_lookup_cache_proc_ops;
806 static const struct proc_ops traceSMB_proc_ops;
807 static const struct proc_ops cifs_security_flags_proc_ops;
808 static const struct proc_ops cifs_linux_ext_proc_ops;
809 static const struct proc_ops cifs_mount_params_proc_ops;
810
811 void
cifs_proc_init(void)812 cifs_proc_init(void)
813 {
814 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
815 if (proc_fs_cifs == NULL)
816 return;
817
818 proc_create_single("DebugData", 0, proc_fs_cifs,
819 cifs_debug_data_proc_show);
820
821 proc_create_single("open_files", 0400, proc_fs_cifs,
822 cifs_debug_files_proc_show);
823
824 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
825 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
826 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
827 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
828 &cifs_linux_ext_proc_ops);
829 proc_create("SecurityFlags", 0644, proc_fs_cifs,
830 &cifs_security_flags_proc_ops);
831 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
832 &cifs_lookup_cache_proc_ops);
833
834 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
835
836 #ifdef CONFIG_CIFS_DFS_UPCALL
837 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
838 #endif
839
840 #ifdef CONFIG_CIFS_SMB_DIRECT
841 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
842 &cifs_rdma_readwrite_threshold_proc_fops);
843 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
844 &cifs_smbd_max_frmr_depth_proc_fops);
845 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
846 &cifs_smbd_keep_alive_interval_proc_fops);
847 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
848 &cifs_smbd_max_receive_size_proc_fops);
849 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
850 &cifs_smbd_max_fragmented_recv_size_proc_fops);
851 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
852 &cifs_smbd_max_send_size_proc_fops);
853 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
854 &cifs_smbd_send_credit_target_proc_fops);
855 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
856 &cifs_smbd_receive_credit_max_proc_fops);
857 #endif
858 }
859
860 void
cifs_proc_clean(void)861 cifs_proc_clean(void)
862 {
863 if (proc_fs_cifs == NULL)
864 return;
865
866 remove_proc_entry("DebugData", proc_fs_cifs);
867 remove_proc_entry("open_files", proc_fs_cifs);
868 remove_proc_entry("cifsFYI", proc_fs_cifs);
869 remove_proc_entry("traceSMB", proc_fs_cifs);
870 remove_proc_entry("Stats", proc_fs_cifs);
871 remove_proc_entry("SecurityFlags", proc_fs_cifs);
872 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
873 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
874 remove_proc_entry("mount_params", proc_fs_cifs);
875
876 #ifdef CONFIG_CIFS_DFS_UPCALL
877 remove_proc_entry("dfscache", proc_fs_cifs);
878 #endif
879 #ifdef CONFIG_CIFS_SMB_DIRECT
880 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
881 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
882 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
883 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
884 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
885 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
886 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
887 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
888 #endif
889 remove_proc_entry("fs/cifs", NULL);
890 }
891
cifsFYI_proc_show(struct seq_file * m,void * v)892 static int cifsFYI_proc_show(struct seq_file *m, void *v)
893 {
894 seq_printf(m, "%d\n", cifsFYI);
895 return 0;
896 }
897
cifsFYI_proc_open(struct inode * inode,struct file * file)898 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
899 {
900 return single_open(file, cifsFYI_proc_show, NULL);
901 }
902
cifsFYI_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)903 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
904 size_t count, loff_t *ppos)
905 {
906 char c[2] = { '\0' };
907 bool bv;
908 int rc;
909
910 rc = get_user(c[0], buffer);
911 if (rc)
912 return rc;
913 if (kstrtobool(c, &bv) == 0)
914 cifsFYI = bv;
915 else if ((c[0] > '1') && (c[0] <= '9'))
916 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
917 else
918 return -EINVAL;
919
920 return count;
921 }
922
923 static const struct proc_ops cifsFYI_proc_ops = {
924 .proc_open = cifsFYI_proc_open,
925 .proc_read = seq_read,
926 .proc_lseek = seq_lseek,
927 .proc_release = single_release,
928 .proc_write = cifsFYI_proc_write,
929 };
930
cifs_linux_ext_proc_show(struct seq_file * m,void * v)931 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
932 {
933 seq_printf(m, "%d\n", linuxExtEnabled);
934 return 0;
935 }
936
cifs_linux_ext_proc_open(struct inode * inode,struct file * file)937 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
938 {
939 return single_open(file, cifs_linux_ext_proc_show, NULL);
940 }
941
cifs_linux_ext_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)942 static ssize_t cifs_linux_ext_proc_write(struct file *file,
943 const char __user *buffer, size_t count, loff_t *ppos)
944 {
945 int rc;
946
947 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
948 if (rc)
949 return rc;
950
951 return count;
952 }
953
954 static const struct proc_ops cifs_linux_ext_proc_ops = {
955 .proc_open = cifs_linux_ext_proc_open,
956 .proc_read = seq_read,
957 .proc_lseek = seq_lseek,
958 .proc_release = single_release,
959 .proc_write = cifs_linux_ext_proc_write,
960 };
961
cifs_lookup_cache_proc_show(struct seq_file * m,void * v)962 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
963 {
964 seq_printf(m, "%d\n", lookupCacheEnabled);
965 return 0;
966 }
967
cifs_lookup_cache_proc_open(struct inode * inode,struct file * file)968 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
969 {
970 return single_open(file, cifs_lookup_cache_proc_show, NULL);
971 }
972
cifs_lookup_cache_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)973 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
974 const char __user *buffer, size_t count, loff_t *ppos)
975 {
976 int rc;
977
978 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
979 if (rc)
980 return rc;
981
982 return count;
983 }
984
985 static const struct proc_ops cifs_lookup_cache_proc_ops = {
986 .proc_open = cifs_lookup_cache_proc_open,
987 .proc_read = seq_read,
988 .proc_lseek = seq_lseek,
989 .proc_release = single_release,
990 .proc_write = cifs_lookup_cache_proc_write,
991 };
992
traceSMB_proc_show(struct seq_file * m,void * v)993 static int traceSMB_proc_show(struct seq_file *m, void *v)
994 {
995 seq_printf(m, "%d\n", traceSMB);
996 return 0;
997 }
998
traceSMB_proc_open(struct inode * inode,struct file * file)999 static int traceSMB_proc_open(struct inode *inode, struct file *file)
1000 {
1001 return single_open(file, traceSMB_proc_show, NULL);
1002 }
1003
traceSMB_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)1004 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
1005 size_t count, loff_t *ppos)
1006 {
1007 int rc;
1008
1009 rc = kstrtobool_from_user(buffer, count, &traceSMB);
1010 if (rc)
1011 return rc;
1012
1013 return count;
1014 }
1015
1016 static const struct proc_ops traceSMB_proc_ops = {
1017 .proc_open = traceSMB_proc_open,
1018 .proc_read = seq_read,
1019 .proc_lseek = seq_lseek,
1020 .proc_release = single_release,
1021 .proc_write = traceSMB_proc_write,
1022 };
1023
cifs_security_flags_proc_show(struct seq_file * m,void * v)1024 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
1025 {
1026 seq_printf(m, "0x%x\n", global_secflags);
1027 return 0;
1028 }
1029
cifs_security_flags_proc_open(struct inode * inode,struct file * file)1030 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
1031 {
1032 return single_open(file, cifs_security_flags_proc_show, NULL);
1033 }
1034
1035 /*
1036 * Ensure that if someone sets a MUST flag, that we disable all other MAY
1037 * flags except for the ones corresponding to the given MUST flag. If there are
1038 * multiple MUST flags, then try to prefer more secure ones.
1039 */
1040 static void
cifs_security_flags_handle_must_flags(unsigned int * flags)1041 cifs_security_flags_handle_must_flags(unsigned int *flags)
1042 {
1043 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
1044
1045 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
1046 *flags = CIFSSEC_MUST_KRB5;
1047 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
1048 *flags = CIFSSEC_MUST_NTLMSSP;
1049 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
1050 *flags = CIFSSEC_MUST_NTLMV2;
1051
1052 *flags |= signflags;
1053 }
1054
cifs_security_flags_proc_write(struct file * file,const char __user * buffer,size_t count,loff_t * ppos)1055 static ssize_t cifs_security_flags_proc_write(struct file *file,
1056 const char __user *buffer, size_t count, loff_t *ppos)
1057 {
1058 int rc;
1059 unsigned int flags;
1060 char flags_string[12];
1061 bool bv;
1062
1063 if ((count < 1) || (count > 11))
1064 return -EINVAL;
1065
1066 memset(flags_string, 0, 12);
1067
1068 if (copy_from_user(flags_string, buffer, count))
1069 return -EFAULT;
1070
1071 if (count < 3) {
1072 /* single char or single char followed by null */
1073 if (kstrtobool(flags_string, &bv) == 0) {
1074 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
1075 return count;
1076 } else if (!isdigit(flags_string[0])) {
1077 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1078 flags_string);
1079 return -EINVAL;
1080 }
1081 }
1082
1083 /* else we have a number */
1084 rc = kstrtouint(flags_string, 0, &flags);
1085 if (rc) {
1086 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1087 flags_string);
1088 return rc;
1089 }
1090
1091 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
1092
1093 if (flags == 0) {
1094 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
1095 return -EINVAL;
1096 }
1097
1098 if (flags & ~CIFSSEC_MASK) {
1099 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
1100 flags & ~CIFSSEC_MASK);
1101 return -EINVAL;
1102 }
1103
1104 cifs_security_flags_handle_must_flags(&flags);
1105
1106 /* flags look ok - update the global security flags for cifs module */
1107 global_secflags = flags;
1108 if (global_secflags & CIFSSEC_MUST_SIGN) {
1109 /* requiring signing implies signing is allowed */
1110 global_secflags |= CIFSSEC_MAY_SIGN;
1111 cifs_dbg(FYI, "packet signing now required\n");
1112 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1113 cifs_dbg(FYI, "packet signing disabled\n");
1114 }
1115 /* BB should we turn on MAY flags for other MUST options? */
1116 return count;
1117 }
1118
1119 static const struct proc_ops cifs_security_flags_proc_ops = {
1120 .proc_open = cifs_security_flags_proc_open,
1121 .proc_read = seq_read,
1122 .proc_lseek = seq_lseek,
1123 .proc_release = single_release,
1124 .proc_write = cifs_security_flags_proc_write,
1125 };
1126
1127 /* To make it easier to debug, can help to show mount params */
cifs_mount_params_proc_show(struct seq_file * m,void * v)1128 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1129 {
1130 const struct fs_parameter_spec *p;
1131 const char *type;
1132
1133 for (p = smb3_fs_parameters; p->name; p++) {
1134 /* cannot use switch with pointers... */
1135 if (!p->type) {
1136 if (p->flags == fs_param_neg_with_no)
1137 type = "noflag";
1138 else
1139 type = "flag";
1140 } else if (p->type == fs_param_is_bool)
1141 type = "bool";
1142 else if (p->type == fs_param_is_u32)
1143 type = "u32";
1144 else if (p->type == fs_param_is_u64)
1145 type = "u64";
1146 else if (p->type == fs_param_is_string)
1147 type = "string";
1148 else
1149 type = "unknown";
1150
1151 seq_printf(m, "%s:%s\n", p->name, type);
1152 }
1153
1154 return 0;
1155 }
1156
cifs_mount_params_proc_open(struct inode * inode,struct file * file)1157 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1158 {
1159 return single_open(file, cifs_mount_params_proc_show, NULL);
1160 }
1161
1162 static const struct proc_ops cifs_mount_params_proc_ops = {
1163 .proc_open = cifs_mount_params_proc_open,
1164 .proc_read = seq_read,
1165 .proc_lseek = seq_lseek,
1166 .proc_release = single_release,
1167 /* No need for write for now */
1168 /* .proc_write = cifs_mount_params_proc_write, */
1169 };
1170
1171 #else
cifs_proc_init(void)1172 inline void cifs_proc_init(void)
1173 {
1174 }
1175
cifs_proc_clean(void)1176 inline void cifs_proc_clean(void)
1177 {
1178 }
1179 #endif /* PROC_FS */
1180