4 * Copyright (C) International Business Machines Corp., 2000,2005
6 * Modified by Steve French (sfrench@us.ibm.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <linux/string.h>
24 #include <linux/ctype.h>
25 #include <linux/module.h>
26 #include <linux/proc_fs.h>
27 #include <linux/uaccess.h>
30 #include "cifsproto.h"
31 #include "cifs_debug.h"
33 #ifdef CONFIG_CIFS_DFS_UPCALL
34 #include "dfs_cache.h"
36 #ifdef CONFIG_CIFS_SMB_DIRECT
37 #include "smbdirect.h"
41 cifs_dump_mem(char *label, void *data, int length)
43 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
44 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
48 void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
50 #ifdef CONFIG_CIFS_DEBUG2
51 struct smb_hdr *smb = (struct smb_hdr *)buf;
53 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
54 smb->Command, smb->Status.CifsError,
55 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
56 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
57 server->ops->calc_smb_size(smb, server));
58 #endif /* CONFIG_CIFS_DEBUG2 */
61 void cifs_dump_mids(struct TCP_Server_Info *server)
63 #ifdef CONFIG_CIFS_DEBUG2
64 struct list_head *tmp;
65 struct mid_q_entry *mid_entry;
70 cifs_dbg(VFS, "Dump pending requests:\n");
71 spin_lock(&GlobalMid_Lock);
72 list_for_each(tmp, &server->pending_mid_q) {
73 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
74 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
76 le16_to_cpu(mid_entry->command),
78 mid_entry->callback_data,
80 #ifdef CONFIG_CIFS_STATS2
81 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
84 mid_entry->when_received,
87 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
88 mid_entry->multiRsp, mid_entry->multiEnd);
89 if (mid_entry->resp_buf) {
90 cifs_dump_detail(mid_entry->resp_buf, server);
91 cifs_dump_mem("existing buf: ",
92 mid_entry->resp_buf, 62);
95 spin_unlock(&GlobalMid_Lock);
96 #endif /* CONFIG_CIFS_DEBUG2 */
100 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
102 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
104 seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
105 if (tcon->nativeFileSystem)
106 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
107 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
108 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
109 le32_to_cpu(tcon->fsAttrInfo.Attributes),
110 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
112 if (dev_type == FILE_DEVICE_DISK)
113 seq_puts(m, " type: DISK ");
114 else if (dev_type == FILE_DEVICE_CD_ROM)
115 seq_puts(m, " type: CDROM ");
117 seq_printf(m, " type: %d ", dev_type);
119 seq_printf(m, " Encrypted");
121 seq_printf(m, " nocase");
123 seq_printf(m, " POSIX Extensions");
124 if (tcon->ses->server->ops->dump_share_caps)
125 tcon->ses->server->ops->dump_share_caps(m, tcon);
127 if (tcon->need_reconnect)
128 seq_puts(m, "\tDISCONNECTED ");
133 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
135 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
136 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
138 seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
139 seq_puts(m, "\t\tCapabilities: ");
140 if (iface->rdma_capable)
141 seq_puts(m, "rdma ");
142 if (iface->rss_capable)
145 if (iface->sockaddr.ss_family == AF_INET)
146 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
147 else if (iface->sockaddr.ss_family == AF_INET6)
148 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
151 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
153 struct list_head *stmp, *tmp, *tmp1, *tmp2;
154 struct TCP_Server_Info *server;
155 struct cifs_ses *ses;
156 struct cifs_tcon *tcon;
157 struct cifsFileInfo *cfile;
159 seq_puts(m, "# Version:1\n");
160 seq_puts(m, "# Format:\n");
161 seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>");
162 #ifdef CONFIG_CIFS_DEBUG2
163 seq_printf(m, " <filename> <mid>\n");
165 seq_printf(m, " <filename>\n");
166 #endif /* CIFS_DEBUG2 */
167 spin_lock(&cifs_tcp_ses_lock);
168 list_for_each(stmp, &cifs_tcp_ses_list) {
169 server = list_entry(stmp, struct TCP_Server_Info,
171 list_for_each(tmp, &server->smb_ses_list) {
172 ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
173 list_for_each(tmp1, &ses->tcon_list) {
174 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
175 spin_lock(&tcon->open_file_lock);
176 list_for_each(tmp2, &tcon->openFileList) {
177 cfile = list_entry(tmp2, struct cifsFileInfo,
180 "0x%x 0x%llx 0x%x %d %d %d %s",
182 cfile->fid.persistent_fid,
186 from_kuid(&init_user_ns, cfile->uid),
187 cfile->dentry->d_name.name);
188 #ifdef CONFIG_CIFS_DEBUG2
189 seq_printf(m, " 0x%llx\n", cfile->fid.mid);
192 #endif /* CIFS_DEBUG2 */
194 spin_unlock(&tcon->open_file_lock);
198 spin_unlock(&cifs_tcp_ses_lock);
203 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
205 struct list_head *tmp1, *tmp2, *tmp3;
206 struct mid_q_entry *mid_entry;
207 struct TCP_Server_Info *server;
208 struct cifs_ses *ses;
209 struct cifs_tcon *tcon;
213 "Display Internal CIFS Data Structures for Debugging\n"
214 "---------------------------------------------------\n");
215 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
216 seq_printf(m, "Features:");
217 #ifdef CONFIG_CIFS_DFS_UPCALL
218 seq_printf(m, " DFS");
220 #ifdef CONFIG_CIFS_FSCACHE
221 seq_printf(m, ",FSCACHE");
223 #ifdef CONFIG_CIFS_SMB_DIRECT
224 seq_printf(m, ",SMB_DIRECT");
226 #ifdef CONFIG_CIFS_STATS2
227 seq_printf(m, ",STATS2");
229 seq_printf(m, ",STATS");
231 #ifdef CONFIG_CIFS_DEBUG2
232 seq_printf(m, ",DEBUG2");
233 #elif defined(CONFIG_CIFS_DEBUG)
234 seq_printf(m, ",DEBUG");
236 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
237 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
239 #ifdef CONFIG_CIFS_WEAK_PW_HASH
240 seq_printf(m, ",WEAK_PW_HASH");
242 #ifdef CONFIG_CIFS_POSIX
243 seq_printf(m, ",CIFS_POSIX");
245 #ifdef CONFIG_CIFS_UPCALL
246 seq_printf(m, ",UPCALL(SPNEGO)");
248 #ifdef CONFIG_CIFS_XATTR
249 seq_printf(m, ",XATTR");
251 #ifdef CONFIG_CIFS_ACL
252 seq_printf(m, ",ACL");
255 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
256 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
257 seq_printf(m, "Servers:");
260 spin_lock(&cifs_tcp_ses_lock);
261 list_for_each(tmp1, &cifs_tcp_ses_list) {
262 server = list_entry(tmp1, struct TCP_Server_Info,
265 #ifdef CONFIG_CIFS_SMB_DIRECT
269 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
270 "transport status: %x",
271 server->smbd_conn->protocol,
272 server->smbd_conn->transport_status);
273 seq_printf(m, "\nConn receive_credit_max: %x "
274 "send_credit_target: %x max_send_size: %x",
275 server->smbd_conn->receive_credit_max,
276 server->smbd_conn->send_credit_target,
277 server->smbd_conn->max_send_size);
278 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
279 "max_fragmented_send_size: %x max_receive_size:%x",
280 server->smbd_conn->max_fragmented_recv_size,
281 server->smbd_conn->max_fragmented_send_size,
282 server->smbd_conn->max_receive_size);
283 seq_printf(m, "\nConn keep_alive_interval: %x "
284 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
285 server->smbd_conn->keep_alive_interval,
286 server->smbd_conn->max_readwrite_size,
287 server->smbd_conn->rdma_readwrite_threshold);
288 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
289 "count_put_receive_buffer: %x count_send_empty: %x",
290 server->smbd_conn->count_get_receive_buffer,
291 server->smbd_conn->count_put_receive_buffer,
292 server->smbd_conn->count_send_empty);
293 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
294 "count_enqueue_reassembly_queue: %x "
295 "count_dequeue_reassembly_queue: %x "
296 "fragment_reassembly_remaining: %x "
297 "reassembly_data_length: %x "
298 "reassembly_queue_length: %x",
299 server->smbd_conn->count_reassembly_queue,
300 server->smbd_conn->count_enqueue_reassembly_queue,
301 server->smbd_conn->count_dequeue_reassembly_queue,
302 server->smbd_conn->fragment_reassembly_remaining,
303 server->smbd_conn->reassembly_data_length,
304 server->smbd_conn->reassembly_queue_length);
305 seq_printf(m, "\nCurrent Credits send_credits: %x "
306 "receive_credits: %x receive_credit_target: %x",
307 atomic_read(&server->smbd_conn->send_credits),
308 atomic_read(&server->smbd_conn->receive_credits),
309 server->smbd_conn->receive_credit_target);
310 seq_printf(m, "\nPending send_pending: %x send_payload_pending:"
311 " %x smbd_send_pending: %x smbd_recv_pending: %x",
312 atomic_read(&server->smbd_conn->send_pending),
313 atomic_read(&server->smbd_conn->send_payload_pending),
314 server->smbd_conn->smbd_send_pending,
315 server->smbd_conn->smbd_recv_pending);
316 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
317 "count_empty_packet_queue: %x",
318 server->smbd_conn->count_receive_queue,
319 server->smbd_conn->count_empty_packet_queue);
320 seq_printf(m, "\nMR responder_resources: %x "
321 "max_frmr_depth: %x mr_type: %x",
322 server->smbd_conn->responder_resources,
323 server->smbd_conn->max_frmr_depth,
324 server->smbd_conn->mr_type);
325 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
326 atomic_read(&server->smbd_conn->mr_ready_count),
327 atomic_read(&server->smbd_conn->mr_used_count));
330 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
331 server->credits, server->dialect);
333 seq_printf(m, " signed");
334 if (server->posix_ext_supported)
335 seq_printf(m, " posix");
338 list_for_each(tmp2, &server->smb_ses_list) {
339 ses = list_entry(tmp2, struct cifs_ses,
341 if ((ses->serverDomain == NULL) ||
342 (ses->serverOS == NULL) ||
343 (ses->serverNOS == NULL)) {
344 seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
345 i, ses->serverName, ses->ses_count,
346 ses->capabilities, ses->status);
347 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
348 seq_printf(m, "Guest\t");
349 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
350 seq_printf(m, "Anonymous\t");
353 "\n%d) Name: %s Domain: %s Uses: %d OS:"
354 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
355 " session status: %d ",
356 i, ses->serverName, ses->serverDomain,
357 ses->ses_count, ses->serverOS, ses->serverNOS,
358 ses->capabilities, ses->status);
361 seq_printf(m, "RDMA\n\t");
362 seq_printf(m, "TCP status: %d Instance: %d\n\tLocal Users To "
363 "Server: %d SecMode: 0x%x Req On Wire: %d",
365 server->reconnect_instance,
367 server->sec_mode, in_flight(server));
369 #ifdef CONFIG_CIFS_STATS2
370 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
371 atomic_read(&server->in_send),
372 atomic_read(&server->num_waiters));
375 seq_puts(m, "\n\tShares:");
378 seq_printf(m, "\n\t%d) IPC: ", j);
380 cifs_debug_tcon(m, ses->tcon_ipc);
382 seq_puts(m, "none\n");
384 list_for_each(tmp3, &ses->tcon_list) {
385 tcon = list_entry(tmp3, struct cifs_tcon,
388 seq_printf(m, "\n\t%d) ", j);
389 cifs_debug_tcon(m, tcon);
392 seq_puts(m, "\n\tMIDs:\n");
394 spin_lock(&GlobalMid_Lock);
395 list_for_each(tmp3, &server->pending_mid_q) {
396 mid_entry = list_entry(tmp3, struct mid_q_entry,
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),
403 mid_entry->callback_data,
406 spin_unlock(&GlobalMid_Lock);
408 spin_lock(&ses->iface_lock);
409 if (ses->iface_count)
410 seq_printf(m, "\n\tServer interfaces: %zu\n",
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]);
416 spin_unlock(&ses->iface_lock);
419 spin_unlock(&cifs_tcp_ses_lock);
422 /* BB add code to dump additional info such as TCP session info now */
426 static ssize_t cifs_stats_proc_write(struct file *file,
427 const char __user *buffer, size_t count, loff_t *ppos)
431 struct list_head *tmp1, *tmp2, *tmp3;
432 struct TCP_Server_Info *server;
433 struct cifs_ses *ses;
434 struct cifs_tcon *tcon;
436 rc = kstrtobool_from_user(buffer, count, &bv);
438 #ifdef CONFIG_CIFS_STATS2
441 atomic_set(&totBufAllocCount, 0);
442 atomic_set(&totSmBufAllocCount, 0);
443 #endif /* CONFIG_CIFS_STATS2 */
444 atomic_set(&tcpSesReconnectCount, 0);
445 atomic_set(&tconInfoReconnectCount, 0);
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,
455 #ifdef CONFIG_CIFS_STATS2
456 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++)
457 atomic_set(&server->smb2slowcmd[i], 0);
458 #endif /* CONFIG_CIFS_STATS2 */
459 list_for_each(tmp2, &server->smb_ses_list) {
460 ses = list_entry(tmp2, struct cifs_ses,
462 list_for_each(tmp3, &ses->tcon_list) {
463 tcon = list_entry(tmp3,
466 atomic_set(&tcon->num_smbs_sent, 0);
467 spin_lock(&tcon->stat_lock);
468 tcon->bytes_read = 0;
469 tcon->bytes_written = 0;
470 spin_unlock(&tcon->stat_lock);
471 if (server->ops->clear_stats)
472 server->ops->clear_stats(tcon);
476 spin_unlock(&cifs_tcp_ses_lock);
484 static int cifs_stats_proc_show(struct seq_file *m, void *v)
487 #ifdef CONFIG_CIFS_STATS2
490 struct list_head *tmp1, *tmp2, *tmp3;
491 struct TCP_Server_Info *server;
492 struct cifs_ses *ses;
493 struct cifs_tcon *tcon;
495 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
496 sesInfoAllocCount.counter);
497 seq_printf(m, "Share (unique mount targets): %d\n",
498 tconInfoAllocCount.counter);
499 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
500 bufAllocCount.counter,
501 cifs_min_rcv + tcpSesAllocCount.counter);
502 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
503 smBufAllocCount.counter, cifs_min_small);
504 #ifdef CONFIG_CIFS_STATS2
505 seq_printf(m, "Total Large %d Small %d Allocations\n",
506 atomic_read(&totBufAllocCount),
507 atomic_read(&totSmBufAllocCount));
508 #endif /* CONFIG_CIFS_STATS2 */
510 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
512 "\n%d session %d share reconnects\n",
513 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
516 "Total vfs operations: %d maximum at one time: %d\n",
517 GlobalCurrentXid, GlobalMaxActiveXid);
520 spin_lock(&cifs_tcp_ses_lock);
521 list_for_each(tmp1, &cifs_tcp_ses_list) {
522 server = list_entry(tmp1, struct TCP_Server_Info,
524 #ifdef CONFIG_CIFS_STATS2
525 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
526 if (atomic_read(&server->smb2slowcmd[j]))
527 seq_printf(m, "%d slow responses from %s for command %d\n",
528 atomic_read(&server->smb2slowcmd[j]),
529 server->hostname, j);
531 list_for_each(tmp2, &server->smb_ses_list) {
532 ses = list_entry(tmp2, struct cifs_ses,
534 list_for_each(tmp3, &ses->tcon_list) {
535 tcon = list_entry(tmp3,
539 seq_printf(m, "\n%d) %s", i, tcon->treeName);
540 if (tcon->need_reconnect)
541 seq_puts(m, "\tDISCONNECTED ");
542 seq_printf(m, "\nSMBs: %d",
543 atomic_read(&tcon->num_smbs_sent));
544 if (server->ops->print_stats)
545 server->ops->print_stats(m, tcon);
549 spin_unlock(&cifs_tcp_ses_lock);
555 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
557 return single_open(file, cifs_stats_proc_show, NULL);
560 static const struct file_operations cifs_stats_proc_fops = {
561 .open = cifs_stats_proc_open,
564 .release = single_release,
565 .write = cifs_stats_proc_write,
568 #ifdef CONFIG_CIFS_SMB_DIRECT
569 #define PROC_FILE_DEFINE(name) \
570 static ssize_t name##_write(struct file *file, const char __user *buffer, \
571 size_t count, loff_t *ppos) \
574 rc = kstrtoint_from_user(buffer, count, 10, & name); \
579 static int name##_proc_show(struct seq_file *m, void *v) \
581 seq_printf(m, "%d\n", name ); \
584 static int name##_open(struct inode *inode, struct file *file) \
586 return single_open(file, name##_proc_show, NULL); \
589 static const struct file_operations cifs_##name##_proc_fops = { \
590 .open = name##_open, \
592 .llseek = seq_lseek, \
593 .release = single_release, \
594 .write = name##_write, \
597 PROC_FILE_DEFINE(rdma_readwrite_threshold);
598 PROC_FILE_DEFINE(smbd_max_frmr_depth);
599 PROC_FILE_DEFINE(smbd_keep_alive_interval);
600 PROC_FILE_DEFINE(smbd_max_receive_size);
601 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
602 PROC_FILE_DEFINE(smbd_max_send_size);
603 PROC_FILE_DEFINE(smbd_send_credit_target);
604 PROC_FILE_DEFINE(smbd_receive_credit_max);
607 static struct proc_dir_entry *proc_fs_cifs;
608 static const struct file_operations cifsFYI_proc_fops;
609 static const struct file_operations cifs_lookup_cache_proc_fops;
610 static const struct file_operations traceSMB_proc_fops;
611 static const struct file_operations cifs_security_flags_proc_fops;
612 static const struct file_operations cifs_linux_ext_proc_fops;
617 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
618 if (proc_fs_cifs == NULL)
621 proc_create_single("DebugData", 0, proc_fs_cifs,
622 cifs_debug_data_proc_show);
624 proc_create_single("open_files", 0400, proc_fs_cifs,
625 cifs_debug_files_proc_show);
627 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops);
628 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops);
629 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops);
630 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
631 &cifs_linux_ext_proc_fops);
632 proc_create("SecurityFlags", 0644, proc_fs_cifs,
633 &cifs_security_flags_proc_fops);
634 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
635 &cifs_lookup_cache_proc_fops);
637 #ifdef CONFIG_CIFS_DFS_UPCALL
638 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_fops);
641 #ifdef CONFIG_CIFS_SMB_DIRECT
642 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
643 &cifs_rdma_readwrite_threshold_proc_fops);
644 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
645 &cifs_smbd_max_frmr_depth_proc_fops);
646 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
647 &cifs_smbd_keep_alive_interval_proc_fops);
648 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
649 &cifs_smbd_max_receive_size_proc_fops);
650 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
651 &cifs_smbd_max_fragmented_recv_size_proc_fops);
652 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
653 &cifs_smbd_max_send_size_proc_fops);
654 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
655 &cifs_smbd_send_credit_target_proc_fops);
656 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
657 &cifs_smbd_receive_credit_max_proc_fops);
662 cifs_proc_clean(void)
664 if (proc_fs_cifs == NULL)
667 remove_proc_entry("DebugData", proc_fs_cifs);
668 remove_proc_entry("open_files", proc_fs_cifs);
669 remove_proc_entry("cifsFYI", proc_fs_cifs);
670 remove_proc_entry("traceSMB", proc_fs_cifs);
671 remove_proc_entry("Stats", proc_fs_cifs);
672 remove_proc_entry("SecurityFlags", proc_fs_cifs);
673 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
674 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
676 #ifdef CONFIG_CIFS_DFS_UPCALL
677 remove_proc_entry("dfscache", proc_fs_cifs);
679 #ifdef CONFIG_CIFS_SMB_DIRECT
680 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
681 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
682 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
683 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
684 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
685 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
686 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
687 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
689 remove_proc_entry("fs/cifs", NULL);
692 static int cifsFYI_proc_show(struct seq_file *m, void *v)
694 seq_printf(m, "%d\n", cifsFYI);
698 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
700 return single_open(file, cifsFYI_proc_show, NULL);
703 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
704 size_t count, loff_t *ppos)
706 char c[2] = { '\0' };
710 rc = get_user(c[0], buffer);
713 if (strtobool(c, &bv) == 0)
715 else if ((c[0] > '1') && (c[0] <= '9'))
716 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
723 static const struct file_operations cifsFYI_proc_fops = {
724 .open = cifsFYI_proc_open,
727 .release = single_release,
728 .write = cifsFYI_proc_write,
731 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
733 seq_printf(m, "%d\n", linuxExtEnabled);
737 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
739 return single_open(file, cifs_linux_ext_proc_show, NULL);
742 static ssize_t cifs_linux_ext_proc_write(struct file *file,
743 const char __user *buffer, size_t count, loff_t *ppos)
747 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
754 static const struct file_operations cifs_linux_ext_proc_fops = {
755 .open = cifs_linux_ext_proc_open,
758 .release = single_release,
759 .write = cifs_linux_ext_proc_write,
762 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
764 seq_printf(m, "%d\n", lookupCacheEnabled);
768 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
770 return single_open(file, cifs_lookup_cache_proc_show, NULL);
773 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
774 const char __user *buffer, size_t count, loff_t *ppos)
778 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
785 static const struct file_operations cifs_lookup_cache_proc_fops = {
786 .open = cifs_lookup_cache_proc_open,
789 .release = single_release,
790 .write = cifs_lookup_cache_proc_write,
793 static int traceSMB_proc_show(struct seq_file *m, void *v)
795 seq_printf(m, "%d\n", traceSMB);
799 static int traceSMB_proc_open(struct inode *inode, struct file *file)
801 return single_open(file, traceSMB_proc_show, NULL);
804 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
805 size_t count, loff_t *ppos)
809 rc = kstrtobool_from_user(buffer, count, &traceSMB);
816 static const struct file_operations traceSMB_proc_fops = {
817 .open = traceSMB_proc_open,
820 .release = single_release,
821 .write = traceSMB_proc_write,
824 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
826 seq_printf(m, "0x%x\n", global_secflags);
830 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
832 return single_open(file, cifs_security_flags_proc_show, NULL);
836 * Ensure that if someone sets a MUST flag, that we disable all other MAY
837 * flags except for the ones corresponding to the given MUST flag. If there are
838 * multiple MUST flags, then try to prefer more secure ones.
841 cifs_security_flags_handle_must_flags(unsigned int *flags)
843 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
845 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
846 *flags = CIFSSEC_MUST_KRB5;
847 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
848 *flags = CIFSSEC_MUST_NTLMSSP;
849 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
850 *flags = CIFSSEC_MUST_NTLMV2;
851 else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
852 *flags = CIFSSEC_MUST_NTLM;
853 else if (CIFSSEC_MUST_LANMAN &&
854 (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
855 *flags = CIFSSEC_MUST_LANMAN;
856 else if (CIFSSEC_MUST_PLNTXT &&
857 (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
858 *flags = CIFSSEC_MUST_PLNTXT;
863 static ssize_t cifs_security_flags_proc_write(struct file *file,
864 const char __user *buffer, size_t count, loff_t *ppos)
868 char flags_string[12];
871 if ((count < 1) || (count > 11))
874 memset(flags_string, 0, 12);
876 if (copy_from_user(flags_string, buffer, count))
880 /* single char or single char followed by null */
881 if (strtobool(flags_string, &bv) == 0) {
882 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
884 } else if (!isdigit(flags_string[0])) {
885 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
891 /* else we have a number */
892 rc = kstrtouint(flags_string, 0, &flags);
894 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
899 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
902 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
906 if (flags & ~CIFSSEC_MASK) {
907 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
908 flags & ~CIFSSEC_MASK);
912 cifs_security_flags_handle_must_flags(&flags);
914 /* flags look ok - update the global security flags for cifs module */
915 global_secflags = flags;
916 if (global_secflags & CIFSSEC_MUST_SIGN) {
917 /* requiring signing implies signing is allowed */
918 global_secflags |= CIFSSEC_MAY_SIGN;
919 cifs_dbg(FYI, "packet signing now required\n");
920 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
921 cifs_dbg(FYI, "packet signing disabled\n");
923 /* BB should we turn on MAY flags for other MUST options? */
927 static const struct file_operations cifs_security_flags_proc_fops = {
928 .open = cifs_security_flags_proc_open,
931 .release = single_release,
932 .write = cifs_security_flags_proc_write,
935 inline void cifs_proc_init(void)
939 inline void cifs_proc_clean(void)