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