Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs_debug.c | |
3 | * | |
b8643e1b | 4 | * Copyright (C) International Business Machines Corp., 2000,2005 |
1da177e4 LT |
5 | * |
6 | * Modified by Steve French (sfrench@us.ibm.com) | |
7 | * | |
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 | |
221601c3 | 10 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 11 | * (at your option) any later version. |
221601c3 | 12 | * |
1da177e4 LT |
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. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
221601c3 | 19 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | */ | |
22 | #include <linux/fs.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/ctype.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/proc_fs.h> | |
7c0f6ba6 | 27 | #include <linux/uaccess.h> |
1da177e4 LT |
28 | #include "cifspdu.h" |
29 | #include "cifsglob.h" | |
30 | #include "cifsproto.h" | |
31 | #include "cifs_debug.h" | |
6c91d362 | 32 | #include "cifsfs.h" |
d8ec913b LL |
33 | #ifdef CONFIG_CIFS_SMB_DIRECT |
34 | #include "smbdirect.h" | |
35 | #endif | |
1da177e4 LT |
36 | |
37 | void | |
38 | cifs_dump_mem(char *label, void *data, int length) | |
39 | { | |
0b456f04 | 40 | pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); |
55d83e0d AS |
41 | print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, |
42 | data, length, true); | |
1da177e4 LT |
43 | } |
44 | ||
f96637be JP |
45 | #ifdef CONFIG_CIFS_DEBUG |
46 | void cifs_vfs_err(const char *fmt, ...) | |
47 | { | |
48 | struct va_format vaf; | |
49 | va_list args; | |
50 | ||
51 | va_start(args, fmt); | |
52 | ||
53 | vaf.fmt = fmt; | |
54 | vaf.va = &args; | |
55 | ||
ec7147a9 | 56 | pr_err_ratelimited("CIFS VFS: %pV", &vaf); |
f96637be JP |
57 | |
58 | va_end(args); | |
59 | } | |
60 | #endif | |
61 | ||
d4e4854f | 62 | void cifs_dump_detail(void *buf) |
3979877e | 63 | { |
8aa26f3e | 64 | #ifdef CONFIG_CIFS_DEBUG2 |
d4e4854f PS |
65 | struct smb_hdr *smb = (struct smb_hdr *)buf; |
66 | ||
f96637be JP |
67 | cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n", |
68 | smb->Command, smb->Status.CifsError, | |
69 | smb->Flags, smb->Flags2, smb->Mid, smb->Pid); | |
70 | cifs_dbg(VFS, "smb buf %p len %u\n", smb, smbCalcSize(smb)); | |
8aa26f3e | 71 | #endif /* CONFIG_CIFS_DEBUG2 */ |
3979877e SF |
72 | } |
73 | ||
ffdd6e4d | 74 | void cifs_dump_mids(struct TCP_Server_Info *server) |
3979877e | 75 | { |
8aa26f3e | 76 | #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 77 | struct list_head *tmp; |
ffdd6e4d | 78 | struct mid_q_entry *mid_entry; |
3979877e | 79 | |
221601c3 | 80 | if (server == NULL) |
3979877e SF |
81 | return; |
82 | ||
f96637be | 83 | cifs_dbg(VFS, "Dump pending requests:\n"); |
3979877e SF |
84 | spin_lock(&GlobalMid_Lock); |
85 | list_for_each(tmp, &server->pending_mid_q) { | |
86 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
f96637be JP |
87 | cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", |
88 | mid_entry->mid_state, | |
89 | le16_to_cpu(mid_entry->command), | |
90 | mid_entry->pid, | |
91 | mid_entry->callback_data, | |
92 | mid_entry->mid); | |
3979877e | 93 | #ifdef CONFIG_CIFS_STATS2 |
f96637be JP |
94 | cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", |
95 | mid_entry->large_buf, | |
96 | mid_entry->resp_buf, | |
97 | mid_entry->when_received, | |
98 | jiffies); | |
3979877e | 99 | #endif /* STATS2 */ |
f96637be JP |
100 | cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", |
101 | mid_entry->multiRsp, mid_entry->multiEnd); | |
ad8b15f0 SF |
102 | if (mid_entry->resp_buf) { |
103 | cifs_dump_detail(mid_entry->resp_buf); | |
104 | cifs_dump_mem("existing buf: ", | |
105 | mid_entry->resp_buf, 62); | |
3979877e SF |
106 | } |
107 | } | |
108 | spin_unlock(&GlobalMid_Lock); | |
3979877e | 109 | #endif /* CONFIG_CIFS_DEBUG2 */ |
8aa26f3e | 110 | } |
3979877e | 111 | |
1da177e4 | 112 | #ifdef CONFIG_PROC_FS |
02cf5905 AA |
113 | static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) |
114 | { | |
115 | __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); | |
116 | ||
117 | seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count); | |
118 | if (tcon->nativeFileSystem) | |
119 | seq_printf(m, "Type: %s ", tcon->nativeFileSystem); | |
120 | seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", | |
121 | le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), | |
122 | le32_to_cpu(tcon->fsAttrInfo.Attributes), | |
123 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), | |
124 | tcon->tidStatus); | |
125 | if (dev_type == FILE_DEVICE_DISK) | |
126 | seq_puts(m, " type: DISK "); | |
127 | else if (dev_type == FILE_DEVICE_CD_ROM) | |
128 | seq_puts(m, " type: CDROM "); | |
129 | else | |
130 | seq_printf(m, " type: %d ", dev_type); | |
131 | if (tcon->ses->server->ops->dump_share_caps) | |
132 | tcon->ses->server->ops->dump_share_caps(m, tcon); | |
133 | ||
134 | if (tcon->need_reconnect) | |
135 | seq_puts(m, "\tDISCONNECTED "); | |
136 | seq_putc(m, '\n'); | |
137 | } | |
138 | ||
f984c7b9 | 139 | static int cifs_debug_data_proc_show(struct seq_file *m, void *v) |
1da177e4 | 140 | { |
f1987b44 | 141 | struct list_head *tmp1, *tmp2, *tmp3; |
ffdd6e4d | 142 | struct mid_q_entry *mid_entry; |
14fbf50d | 143 | struct TCP_Server_Info *server; |
96daf2b0 SF |
144 | struct cifs_ses *ses; |
145 | struct cifs_tcon *tcon; | |
f1987b44 | 146 | int i, j; |
1da177e4 | 147 | |
f984c7b9 | 148 | seq_puts(m, |
1da177e4 LT |
149 | "Display Internal CIFS Data Structures for Debugging\n" |
150 | "---------------------------------------------------\n"); | |
f984c7b9 | 151 | seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); |
ca40b714 | 152 | seq_printf(m, "Features:"); |
f579903e | 153 | #ifdef CONFIG_CIFS_DFS_UPCALL |
ca40b714 | 154 | seq_printf(m, " dfs"); |
f579903e SJ |
155 | #endif |
156 | #ifdef CONFIG_CIFS_FSCACHE | |
ca40b714 | 157 | seq_printf(m, " fscache"); |
f579903e SJ |
158 | #endif |
159 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
ca40b714 | 160 | seq_printf(m, " lanman"); |
f579903e SJ |
161 | #endif |
162 | #ifdef CONFIG_CIFS_POSIX | |
ca40b714 | 163 | seq_printf(m, " posix"); |
f579903e SJ |
164 | #endif |
165 | #ifdef CONFIG_CIFS_UPCALL | |
ca40b714 | 166 | seq_printf(m, " spnego"); |
f579903e SJ |
167 | #endif |
168 | #ifdef CONFIG_CIFS_XATTR | |
ca40b714 JL |
169 | seq_printf(m, " xattr"); |
170 | #endif | |
171 | #ifdef CONFIG_CIFS_ACL | |
172 | seq_printf(m, " acl"); | |
f579903e SJ |
173 | #endif |
174 | seq_putc(m, '\n'); | |
f984c7b9 AD |
175 | seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); |
176 | seq_printf(m, "Servers:"); | |
1da177e4 LT |
177 | |
178 | i = 0; | |
3f9bcca7 | 179 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
180 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
181 | server = list_entry(tmp1, struct TCP_Server_Info, | |
14fbf50d | 182 | tcp_ses_list); |
08a3b969 LL |
183 | |
184 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
185 | if (!server->rdma) | |
186 | goto skip_rdma; | |
187 | ||
188 | seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " | |
189 | "transport status: %x", | |
190 | server->smbd_conn->protocol, | |
191 | server->smbd_conn->transport_status); | |
192 | seq_printf(m, "\nConn receive_credit_max: %x " | |
193 | "send_credit_target: %x max_send_size: %x", | |
194 | server->smbd_conn->receive_credit_max, | |
195 | server->smbd_conn->send_credit_target, | |
196 | server->smbd_conn->max_send_size); | |
197 | seq_printf(m, "\nConn max_fragmented_recv_size: %x " | |
198 | "max_fragmented_send_size: %x max_receive_size:%x", | |
199 | server->smbd_conn->max_fragmented_recv_size, | |
200 | server->smbd_conn->max_fragmented_send_size, | |
201 | server->smbd_conn->max_receive_size); | |
202 | seq_printf(m, "\nConn keep_alive_interval: %x " | |
203 | "max_readwrite_size: %x rdma_readwrite_threshold: %x", | |
204 | server->smbd_conn->keep_alive_interval, | |
205 | server->smbd_conn->max_readwrite_size, | |
206 | server->smbd_conn->rdma_readwrite_threshold); | |
207 | seq_printf(m, "\nDebug count_get_receive_buffer: %x " | |
208 | "count_put_receive_buffer: %x count_send_empty: %x", | |
209 | server->smbd_conn->count_get_receive_buffer, | |
210 | server->smbd_conn->count_put_receive_buffer, | |
211 | server->smbd_conn->count_send_empty); | |
212 | seq_printf(m, "\nRead Queue count_reassembly_queue: %x " | |
213 | "count_enqueue_reassembly_queue: %x " | |
214 | "count_dequeue_reassembly_queue: %x " | |
215 | "fragment_reassembly_remaining: %x " | |
216 | "reassembly_data_length: %x " | |
217 | "reassembly_queue_length: %x", | |
218 | server->smbd_conn->count_reassembly_queue, | |
219 | server->smbd_conn->count_enqueue_reassembly_queue, | |
220 | server->smbd_conn->count_dequeue_reassembly_queue, | |
221 | server->smbd_conn->fragment_reassembly_remaining, | |
222 | server->smbd_conn->reassembly_data_length, | |
223 | server->smbd_conn->reassembly_queue_length); | |
224 | seq_printf(m, "\nCurrent Credits send_credits: %x " | |
225 | "receive_credits: %x receive_credit_target: %x", | |
226 | atomic_read(&server->smbd_conn->send_credits), | |
227 | atomic_read(&server->smbd_conn->receive_credits), | |
228 | server->smbd_conn->receive_credit_target); | |
229 | seq_printf(m, "\nPending send_pending: %x send_payload_pending:" | |
230 | " %x smbd_send_pending: %x smbd_recv_pending: %x", | |
231 | atomic_read(&server->smbd_conn->send_pending), | |
232 | atomic_read(&server->smbd_conn->send_payload_pending), | |
233 | server->smbd_conn->smbd_send_pending, | |
234 | server->smbd_conn->smbd_recv_pending); | |
235 | seq_printf(m, "\nReceive buffers count_receive_queue: %x " | |
236 | "count_empty_packet_queue: %x", | |
237 | server->smbd_conn->count_receive_queue, | |
238 | server->smbd_conn->count_empty_packet_queue); | |
239 | seq_printf(m, "\nMR responder_resources: %x " | |
240 | "max_frmr_depth: %x mr_type: %x", | |
241 | server->smbd_conn->responder_resources, | |
242 | server->smbd_conn->max_frmr_depth, | |
243 | server->smbd_conn->mr_type); | |
244 | seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", | |
245 | atomic_read(&server->smbd_conn->mr_ready_count), | |
246 | atomic_read(&server->smbd_conn->mr_used_count)); | |
247 | skip_rdma: | |
248 | #endif | |
9742805d | 249 | seq_printf(m, "\nNumber of credits: %d", server->credits); |
1da177e4 | 250 | i++; |
14fbf50d | 251 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 252 | ses = list_entry(tmp2, struct cifs_ses, |
14fbf50d JL |
253 | smb_ses_list); |
254 | if ((ses->serverDomain == NULL) || | |
255 | (ses->serverOS == NULL) || | |
256 | (ses->serverNOS == NULL)) { | |
1fa089ec SF |
257 | seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t", |
258 | i, ses->serverName, ses->ses_count, | |
259 | ses->capabilities, ses->status); | |
260 | if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) | |
261 | seq_printf(m, "Guest\t"); | |
262 | else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
263 | seq_printf(m, "Anonymous\t"); | |
14fbf50d JL |
264 | } else { |
265 | seq_printf(m, | |
f1987b44 JL |
266 | "\n%d) Name: %s Domain: %s Uses: %d OS:" |
267 | " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB" | |
221601c3 | 268 | " session status: %d\t", |
b8643e1b | 269 | i, ses->serverName, ses->serverDomain, |
14fbf50d | 270 | ses->ses_count, ses->serverOS, ses->serverNOS, |
221601c3 | 271 | ses->capabilities, ses->status); |
14fbf50d | 272 | } |
8339dd32 LL |
273 | if (server->rdma) |
274 | seq_printf(m, "RDMA\n\t"); | |
f984c7b9 | 275 | seq_printf(m, "TCP status: %d\n\tLocal Users To " |
14fbf50d JL |
276 | "Server: %d SecMode: 0x%x Req On Wire: %d", |
277 | server->tcpStatus, server->srv_count, | |
fc40f9cf | 278 | server->sec_mode, in_flight(server)); |
131afd0b SF |
279 | |
280 | #ifdef CONFIG_CIFS_STATS2 | |
f984c7b9 | 281 | seq_printf(m, " In Send: %d In MaxReq Wait: %d", |
789e6661 | 282 | atomic_read(&server->in_send), |
14fbf50d | 283 | atomic_read(&server->num_waiters)); |
131afd0b SF |
284 | #endif |
285 | ||
f1987b44 JL |
286 | seq_puts(m, "\n\tShares:"); |
287 | j = 0; | |
02cf5905 AA |
288 | |
289 | seq_printf(m, "\n\t%d) IPC: ", j); | |
290 | if (ses->tcon_ipc) | |
291 | cifs_debug_tcon(m, ses->tcon_ipc); | |
292 | else | |
293 | seq_puts(m, "none\n"); | |
294 | ||
f1987b44 | 295 | list_for_each(tmp3, &ses->tcon_list) { |
96daf2b0 | 296 | tcon = list_entry(tmp3, struct cifs_tcon, |
f1987b44 JL |
297 | tcon_list); |
298 | ++j; | |
02cf5905 AA |
299 | seq_printf(m, "\n\t%d) ", j); |
300 | cifs_debug_tcon(m, tcon); | |
f1987b44 JL |
301 | } |
302 | ||
303 | seq_puts(m, "\n\tMIDs:\n"); | |
1da177e4 LT |
304 | |
305 | spin_lock(&GlobalMid_Lock); | |
14fbf50d | 306 | list_for_each(tmp3, &server->pending_mid_q) { |
f1987b44 | 307 | mid_entry = list_entry(tmp3, struct mid_q_entry, |
1da177e4 | 308 | qhead); |
f1987b44 | 309 | seq_printf(m, "\tState: %d com: %d pid:" |
7c9421e1 PS |
310 | " %d cbdata: %p mid %llu\n", |
311 | mid_entry->mid_state, | |
312 | le16_to_cpu(mid_entry->command), | |
313 | mid_entry->pid, | |
314 | mid_entry->callback_data, | |
315 | mid_entry->mid); | |
1da177e4 | 316 | } |
221601c3 | 317 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 318 | } |
1da177e4 | 319 | } |
3f9bcca7 | 320 | spin_unlock(&cifs_tcp_ses_lock); |
f984c7b9 | 321 | seq_putc(m, '\n'); |
1da177e4 | 322 | |
1da177e4 | 323 | /* BB add code to dump additional info such as TCP session info now */ |
f984c7b9 AD |
324 | return 0; |
325 | } | |
1da177e4 | 326 | |
f984c7b9 AD |
327 | static int cifs_debug_data_proc_open(struct inode *inode, struct file *file) |
328 | { | |
329 | return single_open(file, cifs_debug_data_proc_show, NULL); | |
1da177e4 LT |
330 | } |
331 | ||
f984c7b9 | 332 | static const struct file_operations cifs_debug_data_proc_fops = { |
f984c7b9 AD |
333 | .open = cifs_debug_data_proc_open, |
334 | .read = seq_read, | |
335 | .llseek = seq_lseek, | |
336 | .release = single_release, | |
337 | }; | |
1047abc1 | 338 | |
f984c7b9 AD |
339 | #ifdef CONFIG_CIFS_STATS |
340 | static ssize_t cifs_stats_proc_write(struct file *file, | |
341 | const char __user *buffer, size_t count, loff_t *ppos) | |
1047abc1 | 342 | { |
28e2aed2 | 343 | bool bv; |
221601c3 | 344 | int rc; |
f1987b44 JL |
345 | struct list_head *tmp1, *tmp2, *tmp3; |
346 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
347 | struct cifs_ses *ses; |
348 | struct cifs_tcon *tcon; | |
1047abc1 | 349 | |
1404297e KC |
350 | rc = kstrtobool_from_user(buffer, count, &bv); |
351 | if (rc == 0) { | |
4498eed5 SF |
352 | #ifdef CONFIG_CIFS_STATS2 |
353 | atomic_set(&totBufAllocCount, 0); | |
354 | atomic_set(&totSmBufAllocCount, 0); | |
355 | #endif /* CONFIG_CIFS_STATS2 */ | |
3f9bcca7 | 356 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
357 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
358 | server = list_entry(tmp1, struct TCP_Server_Info, | |
359 | tcp_ses_list); | |
c2b3382c | 360 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 361 | ses = list_entry(tmp2, struct cifs_ses, |
c2b3382c | 362 | smb_ses_list); |
f1987b44 JL |
363 | list_for_each(tmp3, &ses->tcon_list) { |
364 | tcon = list_entry(tmp3, | |
96daf2b0 | 365 | struct cifs_tcon, |
f1987b44 JL |
366 | tcon_list); |
367 | atomic_set(&tcon->num_smbs_sent, 0); | |
44c58186 PS |
368 | if (server->ops->clear_stats) |
369 | server->ops->clear_stats(tcon); | |
f1987b44 JL |
370 | } |
371 | } | |
1047abc1 | 372 | } |
3f9bcca7 | 373 | spin_unlock(&cifs_tcp_ses_lock); |
1404297e KC |
374 | } else { |
375 | return rc; | |
1047abc1 SF |
376 | } |
377 | ||
221601c3 | 378 | return count; |
1047abc1 SF |
379 | } |
380 | ||
f984c7b9 | 381 | static int cifs_stats_proc_show(struct seq_file *m, void *v) |
1da177e4 | 382 | { |
f984c7b9 | 383 | int i; |
f1987b44 JL |
384 | struct list_head *tmp1, *tmp2, *tmp3; |
385 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
386 | struct cifs_ses *ses; |
387 | struct cifs_tcon *tcon; | |
1da177e4 | 388 | |
f984c7b9 | 389 | seq_printf(m, |
1da177e4 LT |
390 | "Resources in use\nCIFS Session: %d\n", |
391 | sesInfoAllocCount.counter); | |
f984c7b9 | 392 | seq_printf(m, "Share (unique mount targets): %d\n", |
1da177e4 | 393 | tconInfoAllocCount.counter); |
f984c7b9 | 394 | seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", |
b8643e1b SF |
395 | bufAllocCount.counter, |
396 | cifs_min_rcv + tcpSesAllocCount.counter); | |
f984c7b9 | 397 | seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", |
221601c3 | 398 | smBufAllocCount.counter, cifs_min_small); |
07475ffb | 399 | #ifdef CONFIG_CIFS_STATS2 |
f984c7b9 | 400 | seq_printf(m, "Total Large %d Small %d Allocations\n", |
07475ffb | 401 | atomic_read(&totBufAllocCount), |
221601c3 | 402 | atomic_read(&totSmBufAllocCount)); |
07475ffb SF |
403 | #endif /* CONFIG_CIFS_STATS2 */ |
404 | ||
8097531a | 405 | seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); |
f984c7b9 | 406 | seq_printf(m, |
1da177e4 | 407 | "\n%d session %d share reconnects\n", |
221601c3 | 408 | tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); |
1da177e4 | 409 | |
f984c7b9 | 410 | seq_printf(m, |
1da177e4 | 411 | "Total vfs operations: %d maximum at one time: %d\n", |
221601c3 | 412 | GlobalCurrentXid, GlobalMaxActiveXid); |
1da177e4 LT |
413 | |
414 | i = 0; | |
3f9bcca7 | 415 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
416 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
417 | server = list_entry(tmp1, struct TCP_Server_Info, | |
418 | tcp_ses_list); | |
419 | list_for_each(tmp2, &server->smb_ses_list) { | |
96daf2b0 | 420 | ses = list_entry(tmp2, struct cifs_ses, |
f1987b44 JL |
421 | smb_ses_list); |
422 | list_for_each(tmp3, &ses->tcon_list) { | |
423 | tcon = list_entry(tmp3, | |
96daf2b0 | 424 | struct cifs_tcon, |
f1987b44 JL |
425 | tcon_list); |
426 | i++; | |
427 | seq_printf(m, "\n%d) %s", i, tcon->treeName); | |
428 | if (tcon->need_reconnect) | |
429 | seq_puts(m, "\tDISCONNECTED "); | |
44c58186 PS |
430 | seq_printf(m, "\nSMBs: %d", |
431 | atomic_read(&tcon->num_smbs_sent)); | |
432 | if (server->ops->print_stats) | |
433 | server->ops->print_stats(m, tcon); | |
f1987b44 JL |
434 | } |
435 | } | |
1da177e4 | 436 | } |
3f9bcca7 | 437 | spin_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 438 | |
f984c7b9 AD |
439 | seq_putc(m, '\n'); |
440 | return 0; | |
441 | } | |
221601c3 | 442 | |
f984c7b9 AD |
443 | static int cifs_stats_proc_open(struct inode *inode, struct file *file) |
444 | { | |
445 | return single_open(file, cifs_stats_proc_show, NULL); | |
1da177e4 | 446 | } |
f984c7b9 AD |
447 | |
448 | static const struct file_operations cifs_stats_proc_fops = { | |
f984c7b9 AD |
449 | .open = cifs_stats_proc_open, |
450 | .read = seq_read, | |
451 | .llseek = seq_lseek, | |
452 | .release = single_release, | |
453 | .write = cifs_stats_proc_write, | |
454 | }; | |
90c81e0b | 455 | #endif /* STATS */ |
1da177e4 | 456 | |
d8ec913b LL |
457 | #ifdef CONFIG_CIFS_SMB_DIRECT |
458 | #define PROC_FILE_DEFINE(name) \ | |
459 | static ssize_t name##_write(struct file *file, const char __user *buffer, \ | |
460 | size_t count, loff_t *ppos) \ | |
461 | { \ | |
462 | int rc; \ | |
463 | rc = kstrtoint_from_user(buffer, count, 10, & name); \ | |
464 | if (rc) \ | |
465 | return rc; \ | |
466 | return count; \ | |
467 | } \ | |
468 | static int name##_proc_show(struct seq_file *m, void *v) \ | |
469 | { \ | |
470 | seq_printf(m, "%d\n", name ); \ | |
471 | return 0; \ | |
472 | } \ | |
473 | static int name##_open(struct inode *inode, struct file *file) \ | |
474 | { \ | |
475 | return single_open(file, name##_proc_show, NULL); \ | |
476 | } \ | |
477 | \ | |
478 | static const struct file_operations cifs_##name##_proc_fops = { \ | |
479 | .open = name##_open, \ | |
480 | .read = seq_read, \ | |
481 | .llseek = seq_lseek, \ | |
482 | .release = single_release, \ | |
483 | .write = name##_write, \ | |
484 | } | |
485 | ||
d8ec913b LL |
486 | PROC_FILE_DEFINE(rdma_readwrite_threshold); |
487 | PROC_FILE_DEFINE(smbd_max_frmr_depth); | |
488 | PROC_FILE_DEFINE(smbd_keep_alive_interval); | |
489 | PROC_FILE_DEFINE(smbd_max_receive_size); | |
490 | PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); | |
491 | PROC_FILE_DEFINE(smbd_max_send_size); | |
492 | PROC_FILE_DEFINE(smbd_send_credit_target); | |
493 | PROC_FILE_DEFINE(smbd_receive_credit_max); | |
494 | #endif | |
495 | ||
1da177e4 | 496 | static struct proc_dir_entry *proc_fs_cifs; |
f984c7b9 | 497 | static const struct file_operations cifsFYI_proc_fops; |
f984c7b9 AD |
498 | static const struct file_operations cifs_lookup_cache_proc_fops; |
499 | static const struct file_operations traceSMB_proc_fops; | |
f984c7b9 | 500 | static const struct file_operations cifs_security_flags_proc_fops; |
f984c7b9 | 501 | static const struct file_operations cifs_linux_ext_proc_fops; |
1da177e4 LT |
502 | |
503 | void | |
504 | cifs_proc_init(void) | |
505 | { | |
36a5aeb8 | 506 | proc_fs_cifs = proc_mkdir("fs/cifs", NULL); |
1da177e4 LT |
507 | if (proc_fs_cifs == NULL) |
508 | return; | |
509 | ||
f984c7b9 | 510 | proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops); |
1da177e4 LT |
511 | |
512 | #ifdef CONFIG_CIFS_STATS | |
f984c7b9 | 513 | proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops); |
90c81e0b | 514 | #endif /* STATS */ |
f984c7b9 AD |
515 | proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops); |
516 | proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops); | |
99b1f5b2 SF |
517 | proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs, |
518 | &cifs_linux_ext_proc_fops); | |
99b1f5b2 SF |
519 | proc_create("SecurityFlags", 0, proc_fs_cifs, |
520 | &cifs_security_flags_proc_fops); | |
521 | proc_create("LookupCacheEnabled", 0, proc_fs_cifs, | |
522 | &cifs_lookup_cache_proc_fops); | |
d8ec913b LL |
523 | #ifdef CONFIG_CIFS_SMB_DIRECT |
524 | proc_create("rdma_readwrite_threshold", 0, proc_fs_cifs, | |
525 | &cifs_rdma_readwrite_threshold_proc_fops); | |
526 | proc_create("smbd_max_frmr_depth", 0, proc_fs_cifs, | |
527 | &cifs_smbd_max_frmr_depth_proc_fops); | |
528 | proc_create("smbd_keep_alive_interval", 0, proc_fs_cifs, | |
529 | &cifs_smbd_keep_alive_interval_proc_fops); | |
530 | proc_create("smbd_max_receive_size", 0, proc_fs_cifs, | |
531 | &cifs_smbd_max_receive_size_proc_fops); | |
532 | proc_create("smbd_max_fragmented_recv_size", 0, proc_fs_cifs, | |
533 | &cifs_smbd_max_fragmented_recv_size_proc_fops); | |
534 | proc_create("smbd_max_send_size", 0, proc_fs_cifs, | |
535 | &cifs_smbd_max_send_size_proc_fops); | |
536 | proc_create("smbd_send_credit_target", 0, proc_fs_cifs, | |
537 | &cifs_smbd_send_credit_target_proc_fops); | |
538 | proc_create("smbd_receive_credit_max", 0, proc_fs_cifs, | |
539 | &cifs_smbd_receive_credit_max_proc_fops); | |
540 | #endif | |
1da177e4 LT |
541 | } |
542 | ||
543 | void | |
544 | cifs_proc_clean(void) | |
545 | { | |
546 | if (proc_fs_cifs == NULL) | |
547 | return; | |
548 | ||
549 | remove_proc_entry("DebugData", proc_fs_cifs); | |
550 | remove_proc_entry("cifsFYI", proc_fs_cifs); | |
551 | remove_proc_entry("traceSMB", proc_fs_cifs); | |
552 | #ifdef CONFIG_CIFS_STATS | |
553 | remove_proc_entry("Stats", proc_fs_cifs); | |
554 | #endif | |
221601c3 | 555 | remove_proc_entry("SecurityFlags", proc_fs_cifs); |
221601c3 | 556 | remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); |
221601c3 | 557 | remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); |
d8ec913b LL |
558 | #ifdef CONFIG_CIFS_SMB_DIRECT |
559 | remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); | |
560 | remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); | |
561 | remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); | |
562 | remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); | |
563 | remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); | |
564 | remove_proc_entry("smbd_max_send_size", proc_fs_cifs); | |
565 | remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); | |
566 | remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); | |
567 | #endif | |
36a5aeb8 | 568 | remove_proc_entry("fs/cifs", NULL); |
1da177e4 LT |
569 | } |
570 | ||
f984c7b9 | 571 | static int cifsFYI_proc_show(struct seq_file *m, void *v) |
1da177e4 | 572 | { |
f984c7b9 AD |
573 | seq_printf(m, "%d\n", cifsFYI); |
574 | return 0; | |
575 | } | |
1da177e4 | 576 | |
f984c7b9 AD |
577 | static int cifsFYI_proc_open(struct inode *inode, struct file *file) |
578 | { | |
579 | return single_open(file, cifsFYI_proc_show, NULL); | |
1da177e4 | 580 | } |
f984c7b9 AD |
581 | |
582 | static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, | |
583 | size_t count, loff_t *ppos) | |
1da177e4 | 584 | { |
1404297e | 585 | char c[2] = { '\0' }; |
28e2aed2 | 586 | bool bv; |
1da177e4 LT |
587 | int rc; |
588 | ||
1404297e | 589 | rc = get_user(c[0], buffer); |
1da177e4 LT |
590 | if (rc) |
591 | return rc; | |
1404297e | 592 | if (strtobool(c, &bv) == 0) |
28e2aed2 | 593 | cifsFYI = bv; |
1404297e KC |
594 | else if ((c[0] > '1') && (c[0] <= '9')) |
595 | cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ | |
1da177e4 LT |
596 | |
597 | return count; | |
598 | } | |
599 | ||
f984c7b9 | 600 | static const struct file_operations cifsFYI_proc_fops = { |
f984c7b9 AD |
601 | .open = cifsFYI_proc_open, |
602 | .read = seq_read, | |
603 | .llseek = seq_lseek, | |
604 | .release = single_release, | |
605 | .write = cifsFYI_proc_write, | |
606 | }; | |
1da177e4 | 607 | |
f984c7b9 AD |
608 | static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) |
609 | { | |
610 | seq_printf(m, "%d\n", linuxExtEnabled); | |
611 | return 0; | |
612 | } | |
1da177e4 | 613 | |
f984c7b9 AD |
614 | static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) |
615 | { | |
616 | return single_open(file, cifs_linux_ext_proc_show, NULL); | |
1da177e4 | 617 | } |
f984c7b9 AD |
618 | |
619 | static ssize_t cifs_linux_ext_proc_write(struct file *file, | |
620 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 621 | { |
221601c3 SF |
622 | int rc; |
623 | ||
1404297e | 624 | rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); |
221601c3 SF |
625 | if (rc) |
626 | return rc; | |
28e2aed2 | 627 | |
221601c3 | 628 | return count; |
1da177e4 LT |
629 | } |
630 | ||
f984c7b9 | 631 | static const struct file_operations cifs_linux_ext_proc_fops = { |
f984c7b9 AD |
632 | .open = cifs_linux_ext_proc_open, |
633 | .read = seq_read, | |
634 | .llseek = seq_lseek, | |
635 | .release = single_release, | |
636 | .write = cifs_linux_ext_proc_write, | |
637 | }; | |
1da177e4 | 638 | |
f984c7b9 | 639 | static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) |
1da177e4 | 640 | { |
f984c7b9 AD |
641 | seq_printf(m, "%d\n", lookupCacheEnabled); |
642 | return 0; | |
643 | } | |
1da177e4 | 644 | |
f984c7b9 AD |
645 | static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) |
646 | { | |
647 | return single_open(file, cifs_lookup_cache_proc_show, NULL); | |
1da177e4 | 648 | } |
f984c7b9 AD |
649 | |
650 | static ssize_t cifs_lookup_cache_proc_write(struct file *file, | |
651 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 652 | { |
1da177e4 LT |
653 | int rc; |
654 | ||
1404297e | 655 | rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); |
1da177e4 LT |
656 | if (rc) |
657 | return rc; | |
28e2aed2 | 658 | |
1da177e4 LT |
659 | return count; |
660 | } | |
1da177e4 | 661 | |
f984c7b9 | 662 | static const struct file_operations cifs_lookup_cache_proc_fops = { |
f984c7b9 AD |
663 | .open = cifs_lookup_cache_proc_open, |
664 | .read = seq_read, | |
665 | .llseek = seq_lseek, | |
666 | .release = single_release, | |
667 | .write = cifs_lookup_cache_proc_write, | |
668 | }; | |
1da177e4 | 669 | |
f984c7b9 AD |
670 | static int traceSMB_proc_show(struct seq_file *m, void *v) |
671 | { | |
672 | seq_printf(m, "%d\n", traceSMB); | |
673 | return 0; | |
674 | } | |
1da177e4 | 675 | |
f984c7b9 AD |
676 | static int traceSMB_proc_open(struct inode *inode, struct file *file) |
677 | { | |
678 | return single_open(file, traceSMB_proc_show, NULL); | |
1da177e4 | 679 | } |
f984c7b9 AD |
680 | |
681 | static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, | |
682 | size_t count, loff_t *ppos) | |
1da177e4 | 683 | { |
1da177e4 LT |
684 | int rc; |
685 | ||
1404297e | 686 | rc = kstrtobool_from_user(buffer, count, &traceSMB); |
1da177e4 LT |
687 | if (rc) |
688 | return rc; | |
28e2aed2 | 689 | |
1da177e4 LT |
690 | return count; |
691 | } | |
692 | ||
f984c7b9 | 693 | static const struct file_operations traceSMB_proc_fops = { |
f984c7b9 AD |
694 | .open = traceSMB_proc_open, |
695 | .read = seq_read, | |
696 | .llseek = seq_lseek, | |
697 | .release = single_release, | |
698 | .write = traceSMB_proc_write, | |
699 | }; | |
1da177e4 | 700 | |
f984c7b9 AD |
701 | static int cifs_security_flags_proc_show(struct seq_file *m, void *v) |
702 | { | |
04912d6a | 703 | seq_printf(m, "0x%x\n", global_secflags); |
f984c7b9 AD |
704 | return 0; |
705 | } | |
1da177e4 | 706 | |
f984c7b9 AD |
707 | static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) |
708 | { | |
709 | return single_open(file, cifs_security_flags_proc_show, NULL); | |
1da177e4 | 710 | } |
f984c7b9 | 711 | |
52dfb446 JL |
712 | /* |
713 | * Ensure that if someone sets a MUST flag, that we disable all other MAY | |
714 | * flags except for the ones corresponding to the given MUST flag. If there are | |
715 | * multiple MUST flags, then try to prefer more secure ones. | |
716 | */ | |
717 | static void | |
718 | cifs_security_flags_handle_must_flags(unsigned int *flags) | |
719 | { | |
720 | unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; | |
721 | ||
722 | if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
723 | *flags = CIFSSEC_MUST_KRB5; | |
724 | else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
725 | *flags = CIFSSEC_MUST_NTLMSSP; | |
726 | else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) | |
727 | *flags = CIFSSEC_MUST_NTLMV2; | |
728 | else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM) | |
729 | *flags = CIFSSEC_MUST_NTLM; | |
7a1ceba0 NC |
730 | else if (CIFSSEC_MUST_LANMAN && |
731 | (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) | |
52dfb446 | 732 | *flags = CIFSSEC_MUST_LANMAN; |
7a1ceba0 NC |
733 | else if (CIFSSEC_MUST_PLNTXT && |
734 | (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) | |
52dfb446 JL |
735 | *flags = CIFSSEC_MUST_PLNTXT; |
736 | ||
737 | *flags |= signflags; | |
738 | } | |
739 | ||
f984c7b9 AD |
740 | static ssize_t cifs_security_flags_proc_write(struct file *file, |
741 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 742 | { |
7715dad8 | 743 | int rc; |
bdc4bf6e SF |
744 | unsigned int flags; |
745 | char flags_string[12]; | |
28e2aed2 | 746 | bool bv; |
bdc4bf6e | 747 | |
221601c3 | 748 | if ((count < 1) || (count > 11)) |
3979877e | 749 | return -EINVAL; |
1da177e4 | 750 | |
bdc4bf6e | 751 | memset(flags_string, 0, 12); |
3979877e | 752 | |
221601c3 | 753 | if (copy_from_user(flags_string, buffer, count)) |
bdc4bf6e | 754 | return -EFAULT; |
3979877e | 755 | |
221601c3 | 756 | if (count < 3) { |
bdc4bf6e | 757 | /* single char or single char followed by null */ |
1404297e | 758 | if (strtobool(flags_string, &bv) == 0) { |
28e2aed2 | 759 | global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; |
a013689d | 760 | return count; |
1404297e | 761 | } else if (!isdigit(flags_string[0])) { |
7715dad8 JL |
762 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", |
763 | flags_string); | |
a013689d SF |
764 | return -EINVAL; |
765 | } | |
bdc4bf6e | 766 | } |
bdc4bf6e | 767 | |
7715dad8 JL |
768 | /* else we have a number */ |
769 | rc = kstrtouint(flags_string, 0, &flags); | |
770 | if (rc) { | |
771 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", | |
772 | flags_string); | |
773 | return rc; | |
774 | } | |
bdc4bf6e | 775 | |
f96637be | 776 | cifs_dbg(FYI, "sec flags 0x%x\n", flags); |
bdc4bf6e | 777 | |
7715dad8 JL |
778 | if (flags == 0) { |
779 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); | |
bdc4bf6e SF |
780 | return -EINVAL; |
781 | } | |
1da177e4 | 782 | |
221601c3 | 783 | if (flags & ~CIFSSEC_MASK) { |
7715dad8 | 784 | cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", |
f96637be | 785 | flags & ~CIFSSEC_MASK); |
bdc4bf6e SF |
786 | return -EINVAL; |
787 | } | |
7715dad8 | 788 | |
52dfb446 JL |
789 | cifs_security_flags_handle_must_flags(&flags); |
790 | ||
bdc4bf6e | 791 | /* flags look ok - update the global security flags for cifs module */ |
04912d6a JL |
792 | global_secflags = flags; |
793 | if (global_secflags & CIFSSEC_MUST_SIGN) { | |
762e5ab7 | 794 | /* requiring signing implies signing is allowed */ |
04912d6a | 795 | global_secflags |= CIFSSEC_MAY_SIGN; |
f96637be | 796 | cifs_dbg(FYI, "packet signing now required\n"); |
04912d6a | 797 | } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { |
f96637be | 798 | cifs_dbg(FYI, "packet signing disabled\n"); |
762e5ab7 SF |
799 | } |
800 | /* BB should we turn on MAY flags for other MUST options? */ | |
1da177e4 LT |
801 | return count; |
802 | } | |
f984c7b9 AD |
803 | |
804 | static const struct file_operations cifs_security_flags_proc_fops = { | |
f984c7b9 AD |
805 | .open = cifs_security_flags_proc_open, |
806 | .read = seq_read, | |
807 | .llseek = seq_lseek, | |
808 | .release = single_release, | |
809 | .write = cifs_security_flags_proc_write, | |
810 | }; | |
90c81e0b | 811 | #else |
e086fcea | 812 | inline void cifs_proc_init(void) |
90c81e0b SF |
813 | { |
814 | } | |
815 | ||
e086fcea | 816 | inline void cifs_proc_clean(void) |
90c81e0b SF |
817 | { |
818 | } | |
819 | #endif /* PROC_FS */ |