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8#include <linux/fs.h>
9#include <linux/string.h>
10#include <linux/ctype.h>
11#include <linux/module.h>
12#include <linux/proc_fs.h>
13#include <linux/uaccess.h>
14#include "cifspdu.h"
15#include "cifsglob.h"
16#include "cifsproto.h"
17#include "cifs_debug.h"
18#include "cifsfs.h"
19#include "fs_context.h"
20#ifdef CONFIG_CIFS_DFS_UPCALL
21#include "dfs_cache.h"
22#endif
23#ifdef CONFIG_CIFS_SMB_DIRECT
24#include "smbdirect.h"
25#endif
26#include "cifs_swn.h"
27
28void
29cifs_dump_mem(char *label, void *data, int length)
30{
31 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
32 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
33 data, length, true);
34}
35
36void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
37{
38#ifdef CONFIG_CIFS_DEBUG2
39 struct smb_hdr *smb = (struct smb_hdr *)buf;
40
41 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
42 smb->Command, smb->Status.CifsError,
43 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
44 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
45 server->ops->calc_smb_size(smb, server));
46#endif
47}
48
49void cifs_dump_mids(struct TCP_Server_Info *server)
50{
51#ifdef CONFIG_CIFS_DEBUG2
52 struct mid_q_entry *mid_entry;
53
54 if (server == NULL)
55 return;
56
57 cifs_dbg(VFS, "Dump pending requests:\n");
58 spin_lock(&GlobalMid_Lock);
59 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
60 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
61 mid_entry->mid_state,
62 le16_to_cpu(mid_entry->command),
63 mid_entry->pid,
64 mid_entry->callback_data,
65 mid_entry->mid);
66#ifdef CONFIG_CIFS_STATS2
67 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
68 mid_entry->large_buf,
69 mid_entry->resp_buf,
70 mid_entry->when_received,
71 jiffies);
72#endif
73 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
74 mid_entry->multiRsp, mid_entry->multiEnd);
75 if (mid_entry->resp_buf) {
76 cifs_dump_detail(mid_entry->resp_buf, server);
77 cifs_dump_mem("existing buf: ",
78 mid_entry->resp_buf, 62);
79 }
80 }
81 spin_unlock(&GlobalMid_Lock);
82#endif
83}
84
85#ifdef CONFIG_PROC_FS
86static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
87{
88 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
89
90 seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
91 if (tcon->nativeFileSystem)
92 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
93 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
94 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
95 le32_to_cpu(tcon->fsAttrInfo.Attributes),
96 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
97 tcon->tidStatus);
98 if (dev_type == FILE_DEVICE_DISK)
99 seq_puts(m, " type: DISK ");
100 else if (dev_type == FILE_DEVICE_CD_ROM)
101 seq_puts(m, " type: CDROM ");
102 else
103 seq_printf(m, " type: %d ", dev_type);
104
105 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
106
107 if ((tcon->seal) ||
108 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
109 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
110 seq_printf(m, " Encrypted");
111 if (tcon->nocase)
112 seq_printf(m, " nocase");
113 if (tcon->unix_ext)
114 seq_printf(m, " POSIX Extensions");
115 if (tcon->ses->server->ops->dump_share_caps)
116 tcon->ses->server->ops->dump_share_caps(m, tcon);
117 if (tcon->use_witness)
118 seq_puts(m, " Witness");
119
120 if (tcon->need_reconnect)
121 seq_puts(m, "\tDISCONNECTED ");
122 seq_putc(m, '\n');
123}
124
125static void
126cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
127{
128 struct TCP_Server_Info *server = chan->server;
129
130 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
131 "\n\t\tNumber of credits: %d Dialect 0x%x"
132 "\n\t\tTCP status: %d Instance: %d"
133 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
134 "\n\t\tIn Send: %d In MaxReq Wait: %d",
135 i+1, server->conn_id,
136 server->credits,
137 server->dialect,
138 server->tcpStatus,
139 server->reconnect_instance,
140 server->srv_count,
141 server->sec_mode,
142 in_flight(server),
143 atomic_read(&server->in_send),
144 atomic_read(&server->num_waiters));
145}
146
147static void
148cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
149{
150 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
151 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
152
153 seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
154 seq_puts(m, "\t\tCapabilities: ");
155 if (iface->rdma_capable)
156 seq_puts(m, "rdma ");
157 if (iface->rss_capable)
158 seq_puts(m, "rss ");
159 seq_putc(m, '\n');
160 if (iface->sockaddr.ss_family == AF_INET)
161 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
162 else if (iface->sockaddr.ss_family == AF_INET6)
163 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
164}
165
166static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
167{
168 struct list_head *tmp, *tmp1, *tmp2;
169 struct TCP_Server_Info *server;
170 struct cifs_ses *ses;
171 struct cifs_tcon *tcon;
172 struct cifsFileInfo *cfile;
173
174 seq_puts(m, "# Version:1\n");
175 seq_puts(m, "# Format:\n");
176 seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>");
177#ifdef CONFIG_CIFS_DEBUG2
178 seq_printf(m, " <filename> <mid>\n");
179#else
180 seq_printf(m, " <filename>\n");
181#endif
182 spin_lock(&cifs_tcp_ses_lock);
183 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
184 list_for_each(tmp, &server->smb_ses_list) {
185 ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
186 list_for_each(tmp1, &ses->tcon_list) {
187 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
188 spin_lock(&tcon->open_file_lock);
189 list_for_each(tmp2, &tcon->openFileList) {
190 cfile = list_entry(tmp2, struct cifsFileInfo,
191 tlist);
192 seq_printf(m,
193 "0x%x 0x%llx 0x%x %d %d %d %pd",
194 tcon->tid,
195 cfile->fid.persistent_fid,
196 cfile->f_flags,
197 cfile->count,
198 cfile->pid,
199 from_kuid(&init_user_ns, cfile->uid),
200 cfile->dentry);
201#ifdef CONFIG_CIFS_DEBUG2
202 seq_printf(m, " %llu\n", cfile->fid.mid);
203#else
204 seq_printf(m, "\n");
205#endif
206 }
207 spin_unlock(&tcon->open_file_lock);
208 }
209 }
210 }
211 spin_unlock(&cifs_tcp_ses_lock);
212 seq_putc(m, '\n');
213 return 0;
214}
215
216static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
217{
218 struct list_head *tmp2, *tmp3;
219 struct mid_q_entry *mid_entry;
220 struct TCP_Server_Info *server;
221 struct cifs_ses *ses;
222 struct cifs_tcon *tcon;
223 int c, i, j;
224
225 seq_puts(m,
226 "Display Internal CIFS Data Structures for Debugging\n"
227 "---------------------------------------------------\n");
228 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
229 seq_printf(m, "Features:");
230#ifdef CONFIG_CIFS_DFS_UPCALL
231 seq_printf(m, " DFS");
232#endif
233#ifdef CONFIG_CIFS_FSCACHE
234 seq_printf(m, ",FSCACHE");
235#endif
236#ifdef CONFIG_CIFS_SMB_DIRECT
237 seq_printf(m, ",SMB_DIRECT");
238#endif
239#ifdef CONFIG_CIFS_STATS2
240 seq_printf(m, ",STATS2");
241#else
242 seq_printf(m, ",STATS");
243#endif
244#ifdef CONFIG_CIFS_DEBUG2
245 seq_printf(m, ",DEBUG2");
246#elif defined(CONFIG_CIFS_DEBUG)
247 seq_printf(m, ",DEBUG");
248#endif
249#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
250 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
251#endif
252#ifdef CONFIG_CIFS_POSIX
253 seq_printf(m, ",CIFS_POSIX");
254#endif
255#ifdef CONFIG_CIFS_UPCALL
256 seq_printf(m, ",UPCALL(SPNEGO)");
257#endif
258#ifdef CONFIG_CIFS_XATTR
259 seq_printf(m, ",XATTR");
260#endif
261 seq_printf(m, ",ACL");
262#ifdef CONFIG_CIFS_SWN_UPCALL
263 seq_puts(m, ",WITNESS");
264#endif
265 seq_putc(m, '\n');
266 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
267 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
268
269 seq_printf(m, "\nServers: ");
270
271 c = 0;
272 spin_lock(&cifs_tcp_ses_lock);
273 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
274 if (server->is_channel)
275 continue;
276
277 c++;
278 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
279 c, server->conn_id);
280
281 if (server->hostname)
282 seq_printf(m, "Hostname: %s ", server->hostname);
283#ifdef CONFIG_CIFS_SMB_DIRECT
284 if (!server->rdma)
285 goto skip_rdma;
286
287 if (!server->smbd_conn) {
288 seq_printf(m, "\nSMBDirect transport not available");
289 goto skip_rdma;
290 }
291
292 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
293 "transport status: %x",
294 server->smbd_conn->protocol,
295 server->smbd_conn->transport_status);
296 seq_printf(m, "\nConn receive_credit_max: %x "
297 "send_credit_target: %x max_send_size: %x",
298 server->smbd_conn->receive_credit_max,
299 server->smbd_conn->send_credit_target,
300 server->smbd_conn->max_send_size);
301 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
302 "max_fragmented_send_size: %x max_receive_size:%x",
303 server->smbd_conn->max_fragmented_recv_size,
304 server->smbd_conn->max_fragmented_send_size,
305 server->smbd_conn->max_receive_size);
306 seq_printf(m, "\nConn keep_alive_interval: %x "
307 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
308 server->smbd_conn->keep_alive_interval,
309 server->smbd_conn->max_readwrite_size,
310 server->smbd_conn->rdma_readwrite_threshold);
311 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
312 "count_put_receive_buffer: %x count_send_empty: %x",
313 server->smbd_conn->count_get_receive_buffer,
314 server->smbd_conn->count_put_receive_buffer,
315 server->smbd_conn->count_send_empty);
316 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
317 "count_enqueue_reassembly_queue: %x "
318 "count_dequeue_reassembly_queue: %x "
319 "fragment_reassembly_remaining: %x "
320 "reassembly_data_length: %x "
321 "reassembly_queue_length: %x",
322 server->smbd_conn->count_reassembly_queue,
323 server->smbd_conn->count_enqueue_reassembly_queue,
324 server->smbd_conn->count_dequeue_reassembly_queue,
325 server->smbd_conn->fragment_reassembly_remaining,
326 server->smbd_conn->reassembly_data_length,
327 server->smbd_conn->reassembly_queue_length);
328 seq_printf(m, "\nCurrent Credits send_credits: %x "
329 "receive_credits: %x receive_credit_target: %x",
330 atomic_read(&server->smbd_conn->send_credits),
331 atomic_read(&server->smbd_conn->receive_credits),
332 server->smbd_conn->receive_credit_target);
333 seq_printf(m, "\nPending send_pending: %x ",
334 atomic_read(&server->smbd_conn->send_pending));
335 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
336 "count_empty_packet_queue: %x",
337 server->smbd_conn->count_receive_queue,
338 server->smbd_conn->count_empty_packet_queue);
339 seq_printf(m, "\nMR responder_resources: %x "
340 "max_frmr_depth: %x mr_type: %x",
341 server->smbd_conn->responder_resources,
342 server->smbd_conn->max_frmr_depth,
343 server->smbd_conn->mr_type);
344 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
345 atomic_read(&server->smbd_conn->mr_ready_count),
346 atomic_read(&server->smbd_conn->mr_used_count));
347skip_rdma:
348#endif
349 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
350 server->credits, server->dialect);
351 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
352 seq_printf(m, " COMPRESS_LZNT1");
353 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
354 seq_printf(m, " COMPRESS_LZ77");
355 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
356 seq_printf(m, " COMPRESS_LZ77_HUFF");
357 if (server->sign)
358 seq_printf(m, " signed");
359 if (server->posix_ext_supported)
360 seq_printf(m, " posix");
361
362 if (server->rdma)
363 seq_printf(m, "\nRDMA ");
364 seq_printf(m, "\nTCP status: %d Instance: %d"
365 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
366 server->tcpStatus,
367 server->reconnect_instance,
368 server->srv_count,
369 server->sec_mode, in_flight(server));
370
371 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
372 atomic_read(&server->in_send),
373 atomic_read(&server->num_waiters));
374
375 seq_printf(m, "\n\n\tSessions: ");
376 i = 0;
377 list_for_each(tmp2, &server->smb_ses_list) {
378 ses = list_entry(tmp2, struct cifs_ses,
379 smb_ses_list);
380 i++;
381 if ((ses->serverDomain == NULL) ||
382 (ses->serverOS == NULL) ||
383 (ses->serverNOS == NULL)) {
384 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
385 i, ses->ip_addr, ses->ses_count,
386 ses->capabilities, ses->status);
387 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
388 seq_printf(m, "Guest ");
389 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
390 seq_printf(m, "Anonymous ");
391 } else {
392 seq_printf(m,
393 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
394 "\n\tNOS: %s\tCapability: 0x%x"
395 "\n\tSMB session status: %d ",
396 i, ses->ip_addr, ses->serverDomain,
397 ses->ses_count, ses->serverOS, ses->serverNOS,
398 ses->capabilities, ses->status);
399 }
400
401 seq_printf(m, "\n\tSecurity type: %s ",
402 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
403
404
405 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
406 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
407 seq_puts(m, " encrypted");
408 if (ses->sign)
409 seq_puts(m, " signed");
410
411 seq_printf(m, "\n\tUser: %d Cred User: %d",
412 from_kuid(&init_user_ns, ses->linux_uid),
413 from_kuid(&init_user_ns, ses->cred_uid));
414
415 if (ses->chan_count > 1) {
416 seq_printf(m, "\n\n\tExtra Channels: %zu ",
417 ses->chan_count-1);
418 for (j = 1; j < ses->chan_count; j++)
419 cifs_dump_channel(m, j, &ses->chans[j]);
420 }
421
422 seq_puts(m, "\n\n\tShares: ");
423 j = 0;
424
425 seq_printf(m, "\n\t%d) IPC: ", j);
426 if (ses->tcon_ipc)
427 cifs_debug_tcon(m, ses->tcon_ipc);
428 else
429 seq_puts(m, "none\n");
430
431 list_for_each(tmp3, &ses->tcon_list) {
432 tcon = list_entry(tmp3, struct cifs_tcon,
433 tcon_list);
434 ++j;
435 seq_printf(m, "\n\t%d) ", j);
436 cifs_debug_tcon(m, tcon);
437 }
438
439 spin_lock(&ses->iface_lock);
440 if (ses->iface_count)
441 seq_printf(m, "\n\n\tServer interfaces: %zu",
442 ses->iface_count);
443 for (j = 0; j < ses->iface_count; j++) {
444 struct cifs_server_iface *iface;
445
446 iface = &ses->iface_list[j];
447 seq_printf(m, "\n\t%d)", j+1);
448 cifs_dump_iface(m, iface);
449 if (is_ses_using_iface(ses, iface))
450 seq_puts(m, "\t\t[CONNECTED]\n");
451 }
452 spin_unlock(&ses->iface_lock);
453 }
454 if (i == 0)
455 seq_printf(m, "\n\t\t[NONE]");
456
457 seq_puts(m, "\n\n\tMIDs: ");
458 spin_lock(&GlobalMid_Lock);
459 list_for_each(tmp3, &server->pending_mid_q) {
460 mid_entry = list_entry(tmp3, struct mid_q_entry,
461 qhead);
462 seq_printf(m, "\n\tState: %d com: %d pid:"
463 " %d cbdata: %p mid %llu\n",
464 mid_entry->mid_state,
465 le16_to_cpu(mid_entry->command),
466 mid_entry->pid,
467 mid_entry->callback_data,
468 mid_entry->mid);
469 }
470 spin_unlock(&GlobalMid_Lock);
471 seq_printf(m, "\n--\n");
472 }
473 if (c == 0)
474 seq_printf(m, "\n\t[NONE]");
475
476 spin_unlock(&cifs_tcp_ses_lock);
477 seq_putc(m, '\n');
478 cifs_swn_dump(m);
479
480
481 return 0;
482}
483
484static ssize_t cifs_stats_proc_write(struct file *file,
485 const char __user *buffer, size_t count, loff_t *ppos)
486{
487 bool bv;
488 int rc;
489 struct list_head *tmp1, *tmp2, *tmp3;
490 struct TCP_Server_Info *server;
491 struct cifs_ses *ses;
492 struct cifs_tcon *tcon;
493
494 rc = kstrtobool_from_user(buffer, count, &bv);
495 if (rc == 0) {
496#ifdef CONFIG_CIFS_STATS2
497 int i;
498
499 atomic_set(&totBufAllocCount, 0);
500 atomic_set(&totSmBufAllocCount, 0);
501#endif
502 atomic_set(&tcpSesReconnectCount, 0);
503 atomic_set(&tconInfoReconnectCount, 0);
504
505 spin_lock(&GlobalMid_Lock);
506 GlobalMaxActiveXid = 0;
507 GlobalCurrentXid = 0;
508 spin_unlock(&GlobalMid_Lock);
509 spin_lock(&cifs_tcp_ses_lock);
510 list_for_each(tmp1, &cifs_tcp_ses_list) {
511 server = list_entry(tmp1, struct TCP_Server_Info,
512 tcp_ses_list);
513 server->max_in_flight = 0;
514#ifdef CONFIG_CIFS_STATS2
515 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
516 atomic_set(&server->num_cmds[i], 0);
517 atomic_set(&server->smb2slowcmd[i], 0);
518 server->time_per_cmd[i] = 0;
519 server->slowest_cmd[i] = 0;
520 server->fastest_cmd[0] = 0;
521 }
522#endif
523 list_for_each(tmp2, &server->smb_ses_list) {
524 ses = list_entry(tmp2, struct cifs_ses,
525 smb_ses_list);
526 list_for_each(tmp3, &ses->tcon_list) {
527 tcon = list_entry(tmp3,
528 struct cifs_tcon,
529 tcon_list);
530 atomic_set(&tcon->num_smbs_sent, 0);
531 spin_lock(&tcon->stat_lock);
532 tcon->bytes_read = 0;
533 tcon->bytes_written = 0;
534 spin_unlock(&tcon->stat_lock);
535 if (server->ops->clear_stats)
536 server->ops->clear_stats(tcon);
537 }
538 }
539 }
540 spin_unlock(&cifs_tcp_ses_lock);
541 } else {
542 return rc;
543 }
544
545 return count;
546}
547
548static int cifs_stats_proc_show(struct seq_file *m, void *v)
549{
550 int i;
551#ifdef CONFIG_CIFS_STATS2
552 int j;
553#endif
554 struct list_head *tmp2, *tmp3;
555 struct TCP_Server_Info *server;
556 struct cifs_ses *ses;
557 struct cifs_tcon *tcon;
558
559 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
560 sesInfoAllocCount.counter);
561 seq_printf(m, "Share (unique mount targets): %d\n",
562 tconInfoAllocCount.counter);
563 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
564 bufAllocCount.counter,
565 cifs_min_rcv + tcpSesAllocCount.counter);
566 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
567 smBufAllocCount.counter, cifs_min_small);
568#ifdef CONFIG_CIFS_STATS2
569 seq_printf(m, "Total Large %d Small %d Allocations\n",
570 atomic_read(&totBufAllocCount),
571 atomic_read(&totSmBufAllocCount));
572#endif
573
574 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
575 seq_printf(m,
576 "\n%d session %d share reconnects\n",
577 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
578
579 seq_printf(m,
580 "Total vfs operations: %d maximum at one time: %d\n",
581 GlobalCurrentXid, GlobalMaxActiveXid);
582
583 i = 0;
584 spin_lock(&cifs_tcp_ses_lock);
585 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
586 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
587#ifdef CONFIG_CIFS_STATS2
588 seq_puts(m, "\nTotal time spent processing by command. Time ");
589 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
590 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
591 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
592 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
593 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
594 atomic_read(&server->num_cmds[j]),
595 server->time_per_cmd[j],
596 server->fastest_cmd[j],
597 server->slowest_cmd[j]);
598 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
599 if (atomic_read(&server->smb2slowcmd[j]))
600 seq_printf(m, " %d slow responses from %s for command %d\n",
601 atomic_read(&server->smb2slowcmd[j]),
602 server->hostname, j);
603#endif
604 list_for_each(tmp2, &server->smb_ses_list) {
605 ses = list_entry(tmp2, struct cifs_ses,
606 smb_ses_list);
607 list_for_each(tmp3, &ses->tcon_list) {
608 tcon = list_entry(tmp3,
609 struct cifs_tcon,
610 tcon_list);
611 i++;
612 seq_printf(m, "\n%d) %s", i, tcon->treeName);
613 if (tcon->need_reconnect)
614 seq_puts(m, "\tDISCONNECTED ");
615 seq_printf(m, "\nSMBs: %d",
616 atomic_read(&tcon->num_smbs_sent));
617 if (server->ops->print_stats)
618 server->ops->print_stats(m, tcon);
619 }
620 }
621 }
622 spin_unlock(&cifs_tcp_ses_lock);
623
624 seq_putc(m, '\n');
625 return 0;
626}
627
628static int cifs_stats_proc_open(struct inode *inode, struct file *file)
629{
630 return single_open(file, cifs_stats_proc_show, NULL);
631}
632
633static const struct proc_ops cifs_stats_proc_ops = {
634 .proc_open = cifs_stats_proc_open,
635 .proc_read = seq_read,
636 .proc_lseek = seq_lseek,
637 .proc_release = single_release,
638 .proc_write = cifs_stats_proc_write,
639};
640
641#ifdef CONFIG_CIFS_SMB_DIRECT
642#define PROC_FILE_DEFINE(name) \
643static ssize_t name##_write(struct file *file, const char __user *buffer, \
644 size_t count, loff_t *ppos) \
645{ \
646 int rc; \
647 rc = kstrtoint_from_user(buffer, count, 10, & name); \
648 if (rc) \
649 return rc; \
650 return count; \
651} \
652static int name##_proc_show(struct seq_file *m, void *v) \
653{ \
654 seq_printf(m, "%d\n", name ); \
655 return 0; \
656} \
657static int name##_open(struct inode *inode, struct file *file) \
658{ \
659 return single_open(file, name##_proc_show, NULL); \
660} \
661\
662static const struct proc_ops cifs_##name##_proc_fops = { \
663 .proc_open = name##_open, \
664 .proc_read = seq_read, \
665 .proc_lseek = seq_lseek, \
666 .proc_release = single_release, \
667 .proc_write = name##_write, \
668}
669
670PROC_FILE_DEFINE(rdma_readwrite_threshold);
671PROC_FILE_DEFINE(smbd_max_frmr_depth);
672PROC_FILE_DEFINE(smbd_keep_alive_interval);
673PROC_FILE_DEFINE(smbd_max_receive_size);
674PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
675PROC_FILE_DEFINE(smbd_max_send_size);
676PROC_FILE_DEFINE(smbd_send_credit_target);
677PROC_FILE_DEFINE(smbd_receive_credit_max);
678#endif
679
680static struct proc_dir_entry *proc_fs_cifs;
681static const struct proc_ops cifsFYI_proc_ops;
682static const struct proc_ops cifs_lookup_cache_proc_ops;
683static const struct proc_ops traceSMB_proc_ops;
684static const struct proc_ops cifs_security_flags_proc_ops;
685static const struct proc_ops cifs_linux_ext_proc_ops;
686static const struct proc_ops cifs_mount_params_proc_ops;
687
688void
689cifs_proc_init(void)
690{
691 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
692 if (proc_fs_cifs == NULL)
693 return;
694
695 proc_create_single("DebugData", 0, proc_fs_cifs,
696 cifs_debug_data_proc_show);
697
698 proc_create_single("open_files", 0400, proc_fs_cifs,
699 cifs_debug_files_proc_show);
700
701 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
702 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
703 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
704 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
705 &cifs_linux_ext_proc_ops);
706 proc_create("SecurityFlags", 0644, proc_fs_cifs,
707 &cifs_security_flags_proc_ops);
708 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
709 &cifs_lookup_cache_proc_ops);
710
711 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
712
713#ifdef CONFIG_CIFS_DFS_UPCALL
714 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
715#endif
716
717#ifdef CONFIG_CIFS_SMB_DIRECT
718 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
719 &cifs_rdma_readwrite_threshold_proc_fops);
720 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
721 &cifs_smbd_max_frmr_depth_proc_fops);
722 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
723 &cifs_smbd_keep_alive_interval_proc_fops);
724 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
725 &cifs_smbd_max_receive_size_proc_fops);
726 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
727 &cifs_smbd_max_fragmented_recv_size_proc_fops);
728 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
729 &cifs_smbd_max_send_size_proc_fops);
730 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
731 &cifs_smbd_send_credit_target_proc_fops);
732 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
733 &cifs_smbd_receive_credit_max_proc_fops);
734#endif
735}
736
737void
738cifs_proc_clean(void)
739{
740 if (proc_fs_cifs == NULL)
741 return;
742
743 remove_proc_entry("DebugData", proc_fs_cifs);
744 remove_proc_entry("open_files", proc_fs_cifs);
745 remove_proc_entry("cifsFYI", proc_fs_cifs);
746 remove_proc_entry("traceSMB", proc_fs_cifs);
747 remove_proc_entry("Stats", proc_fs_cifs);
748 remove_proc_entry("SecurityFlags", proc_fs_cifs);
749 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
750 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
751 remove_proc_entry("mount_params", proc_fs_cifs);
752
753#ifdef CONFIG_CIFS_DFS_UPCALL
754 remove_proc_entry("dfscache", proc_fs_cifs);
755#endif
756#ifdef CONFIG_CIFS_SMB_DIRECT
757 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
758 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
759 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
760 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
761 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
762 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
763 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
764 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
765#endif
766 remove_proc_entry("fs/cifs", NULL);
767}
768
769static int cifsFYI_proc_show(struct seq_file *m, void *v)
770{
771 seq_printf(m, "%d\n", cifsFYI);
772 return 0;
773}
774
775static int cifsFYI_proc_open(struct inode *inode, struct file *file)
776{
777 return single_open(file, cifsFYI_proc_show, NULL);
778}
779
780static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
781 size_t count, loff_t *ppos)
782{
783 char c[2] = { '\0' };
784 bool bv;
785 int rc;
786
787 rc = get_user(c[0], buffer);
788 if (rc)
789 return rc;
790 if (strtobool(c, &bv) == 0)
791 cifsFYI = bv;
792 else if ((c[0] > '1') && (c[0] <= '9'))
793 cifsFYI = (int) (c[0] - '0');
794 else
795 return -EINVAL;
796
797 return count;
798}
799
800static const struct proc_ops cifsFYI_proc_ops = {
801 .proc_open = cifsFYI_proc_open,
802 .proc_read = seq_read,
803 .proc_lseek = seq_lseek,
804 .proc_release = single_release,
805 .proc_write = cifsFYI_proc_write,
806};
807
808static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
809{
810 seq_printf(m, "%d\n", linuxExtEnabled);
811 return 0;
812}
813
814static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
815{
816 return single_open(file, cifs_linux_ext_proc_show, NULL);
817}
818
819static ssize_t cifs_linux_ext_proc_write(struct file *file,
820 const char __user *buffer, size_t count, loff_t *ppos)
821{
822 int rc;
823
824 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
825 if (rc)
826 return rc;
827
828 return count;
829}
830
831static const struct proc_ops cifs_linux_ext_proc_ops = {
832 .proc_open = cifs_linux_ext_proc_open,
833 .proc_read = seq_read,
834 .proc_lseek = seq_lseek,
835 .proc_release = single_release,
836 .proc_write = cifs_linux_ext_proc_write,
837};
838
839static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
840{
841 seq_printf(m, "%d\n", lookupCacheEnabled);
842 return 0;
843}
844
845static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
846{
847 return single_open(file, cifs_lookup_cache_proc_show, NULL);
848}
849
850static ssize_t cifs_lookup_cache_proc_write(struct file *file,
851 const char __user *buffer, size_t count, loff_t *ppos)
852{
853 int rc;
854
855 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
856 if (rc)
857 return rc;
858
859 return count;
860}
861
862static const struct proc_ops cifs_lookup_cache_proc_ops = {
863 .proc_open = cifs_lookup_cache_proc_open,
864 .proc_read = seq_read,
865 .proc_lseek = seq_lseek,
866 .proc_release = single_release,
867 .proc_write = cifs_lookup_cache_proc_write,
868};
869
870static int traceSMB_proc_show(struct seq_file *m, void *v)
871{
872 seq_printf(m, "%d\n", traceSMB);
873 return 0;
874}
875
876static int traceSMB_proc_open(struct inode *inode, struct file *file)
877{
878 return single_open(file, traceSMB_proc_show, NULL);
879}
880
881static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
882 size_t count, loff_t *ppos)
883{
884 int rc;
885
886 rc = kstrtobool_from_user(buffer, count, &traceSMB);
887 if (rc)
888 return rc;
889
890 return count;
891}
892
893static const struct proc_ops traceSMB_proc_ops = {
894 .proc_open = traceSMB_proc_open,
895 .proc_read = seq_read,
896 .proc_lseek = seq_lseek,
897 .proc_release = single_release,
898 .proc_write = traceSMB_proc_write,
899};
900
901static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
902{
903 seq_printf(m, "0x%x\n", global_secflags);
904 return 0;
905}
906
907static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
908{
909 return single_open(file, cifs_security_flags_proc_show, NULL);
910}
911
912
913
914
915
916
917static void
918cifs_security_flags_handle_must_flags(unsigned int *flags)
919{
920 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
921
922 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
923 *flags = CIFSSEC_MUST_KRB5;
924 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
925 *flags = CIFSSEC_MUST_NTLMSSP;
926 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
927 *flags = CIFSSEC_MUST_NTLMV2;
928
929 *flags |= signflags;
930}
931
932static ssize_t cifs_security_flags_proc_write(struct file *file,
933 const char __user *buffer, size_t count, loff_t *ppos)
934{
935 int rc;
936 unsigned int flags;
937 char flags_string[12];
938 bool bv;
939
940 if ((count < 1) || (count > 11))
941 return -EINVAL;
942
943 memset(flags_string, 0, 12);
944
945 if (copy_from_user(flags_string, buffer, count))
946 return -EFAULT;
947
948 if (count < 3) {
949
950 if (strtobool(flags_string, &bv) == 0) {
951 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
952 return count;
953 } else if (!isdigit(flags_string[0])) {
954 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
955 flags_string);
956 return -EINVAL;
957 }
958 }
959
960
961 rc = kstrtouint(flags_string, 0, &flags);
962 if (rc) {
963 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
964 flags_string);
965 return rc;
966 }
967
968 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
969
970 if (flags == 0) {
971 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
972 return -EINVAL;
973 }
974
975 if (flags & ~CIFSSEC_MASK) {
976 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
977 flags & ~CIFSSEC_MASK);
978 return -EINVAL;
979 }
980
981 cifs_security_flags_handle_must_flags(&flags);
982
983
984 global_secflags = flags;
985 if (global_secflags & CIFSSEC_MUST_SIGN) {
986
987 global_secflags |= CIFSSEC_MAY_SIGN;
988 cifs_dbg(FYI, "packet signing now required\n");
989 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
990 cifs_dbg(FYI, "packet signing disabled\n");
991 }
992
993 return count;
994}
995
996static const struct proc_ops cifs_security_flags_proc_ops = {
997 .proc_open = cifs_security_flags_proc_open,
998 .proc_read = seq_read,
999 .proc_lseek = seq_lseek,
1000 .proc_release = single_release,
1001 .proc_write = cifs_security_flags_proc_write,
1002};
1003
1004
1005static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1006{
1007 const struct fs_parameter_spec *p;
1008 const char *type;
1009
1010 for (p = smb3_fs_parameters; p->name; p++) {
1011
1012 if (!p->type) {
1013 if (p->flags == fs_param_neg_with_no)
1014 type = "noflag";
1015 else
1016 type = "flag";
1017 } else if (p->type == fs_param_is_bool)
1018 type = "bool";
1019 else if (p->type == fs_param_is_u32)
1020 type = "u32";
1021 else if (p->type == fs_param_is_u64)
1022 type = "u64";
1023 else if (p->type == fs_param_is_string)
1024 type = "string";
1025 else
1026 type = "unknown";
1027
1028 seq_printf(m, "%s:%s\n", p->name, type);
1029 }
1030
1031 return 0;
1032}
1033
1034static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1035{
1036 return single_open(file, cifs_mount_params_proc_show, NULL);
1037}
1038
1039static const struct proc_ops cifs_mount_params_proc_ops = {
1040 .proc_open = cifs_mount_params_proc_open,
1041 .proc_read = seq_read,
1042 .proc_lseek = seq_lseek,
1043 .proc_release = single_release,
1044
1045
1046};
1047
1048#else
1049inline void cifs_proc_init(void)
1050{
1051}
1052
1053inline void cifs_proc_clean(void)
1054{
1055}
1056#endif
1057
