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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" |
1da177e4 LT |
33 | |
34 | void | |
35 | cifs_dump_mem(char *label, void *data, int length) | |
36 | { | |
0b456f04 | 37 | pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); |
55d83e0d AS |
38 | print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, |
39 | data, length, true); | |
1da177e4 LT |
40 | } |
41 | ||
f96637be JP |
42 | #ifdef CONFIG_CIFS_DEBUG |
43 | void cifs_vfs_err(const char *fmt, ...) | |
44 | { | |
45 | struct va_format vaf; | |
46 | va_list args; | |
47 | ||
48 | va_start(args, fmt); | |
49 | ||
50 | vaf.fmt = fmt; | |
51 | vaf.va = &args; | |
52 | ||
ec7147a9 | 53 | pr_err_ratelimited("CIFS VFS: %pV", &vaf); |
f96637be JP |
54 | |
55 | va_end(args); | |
56 | } | |
57 | #endif | |
58 | ||
d4e4854f | 59 | void cifs_dump_detail(void *buf) |
3979877e | 60 | { |
8aa26f3e | 61 | #ifdef CONFIG_CIFS_DEBUG2 |
d4e4854f PS |
62 | struct smb_hdr *smb = (struct smb_hdr *)buf; |
63 | ||
f96637be JP |
64 | cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n", |
65 | smb->Command, smb->Status.CifsError, | |
66 | smb->Flags, smb->Flags2, smb->Mid, smb->Pid); | |
67 | cifs_dbg(VFS, "smb buf %p len %u\n", smb, smbCalcSize(smb)); | |
8aa26f3e | 68 | #endif /* CONFIG_CIFS_DEBUG2 */ |
3979877e SF |
69 | } |
70 | ||
ffdd6e4d | 71 | void cifs_dump_mids(struct TCP_Server_Info *server) |
3979877e | 72 | { |
8aa26f3e | 73 | #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 74 | struct list_head *tmp; |
ffdd6e4d | 75 | struct mid_q_entry *mid_entry; |
3979877e | 76 | |
221601c3 | 77 | if (server == NULL) |
3979877e SF |
78 | return; |
79 | ||
f96637be | 80 | cifs_dbg(VFS, "Dump pending requests:\n"); |
3979877e SF |
81 | spin_lock(&GlobalMid_Lock); |
82 | list_for_each(tmp, &server->pending_mid_q) { | |
83 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
f96637be JP |
84 | cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", |
85 | mid_entry->mid_state, | |
86 | le16_to_cpu(mid_entry->command), | |
87 | mid_entry->pid, | |
88 | mid_entry->callback_data, | |
89 | mid_entry->mid); | |
3979877e | 90 | #ifdef CONFIG_CIFS_STATS2 |
f96637be JP |
91 | cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", |
92 | mid_entry->large_buf, | |
93 | mid_entry->resp_buf, | |
94 | mid_entry->when_received, | |
95 | jiffies); | |
3979877e | 96 | #endif /* STATS2 */ |
f96637be JP |
97 | cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", |
98 | mid_entry->multiRsp, mid_entry->multiEnd); | |
ad8b15f0 SF |
99 | if (mid_entry->resp_buf) { |
100 | cifs_dump_detail(mid_entry->resp_buf); | |
101 | cifs_dump_mem("existing buf: ", | |
102 | mid_entry->resp_buf, 62); | |
3979877e SF |
103 | } |
104 | } | |
105 | spin_unlock(&GlobalMid_Lock); | |
3979877e | 106 | #endif /* CONFIG_CIFS_DEBUG2 */ |
8aa26f3e | 107 | } |
3979877e | 108 | |
1da177e4 | 109 | #ifdef CONFIG_PROC_FS |
ba928f4d AA |
110 | static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) |
111 | { | |
112 | __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); | |
113 | ||
114 | seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count); | |
115 | if (tcon->nativeFileSystem) | |
116 | seq_printf(m, "Type: %s ", tcon->nativeFileSystem); | |
117 | seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", | |
118 | le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), | |
119 | le32_to_cpu(tcon->fsAttrInfo.Attributes), | |
120 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), | |
121 | tcon->tidStatus); | |
122 | if (dev_type == FILE_DEVICE_DISK) | |
123 | seq_puts(m, " type: DISK "); | |
124 | else if (dev_type == FILE_DEVICE_CD_ROM) | |
125 | seq_puts(m, " type: CDROM "); | |
126 | else | |
127 | seq_printf(m, " type: %d ", dev_type); | |
128 | if (tcon->ses->server->ops->dump_share_caps) | |
129 | tcon->ses->server->ops->dump_share_caps(m, tcon); | |
130 | ||
131 | if (tcon->need_reconnect) | |
132 | seq_puts(m, "\tDISCONNECTED "); | |
133 | seq_putc(m, '\n'); | |
134 | } | |
135 | ||
f984c7b9 | 136 | static int cifs_debug_data_proc_show(struct seq_file *m, void *v) |
1da177e4 | 137 | { |
f1987b44 | 138 | struct list_head *tmp1, *tmp2, *tmp3; |
ffdd6e4d | 139 | struct mid_q_entry *mid_entry; |
14fbf50d | 140 | struct TCP_Server_Info *server; |
96daf2b0 SF |
141 | struct cifs_ses *ses; |
142 | struct cifs_tcon *tcon; | |
f1987b44 | 143 | int i, j; |
1da177e4 | 144 | |
f984c7b9 | 145 | seq_puts(m, |
1da177e4 LT |
146 | "Display Internal CIFS Data Structures for Debugging\n" |
147 | "---------------------------------------------------\n"); | |
f984c7b9 | 148 | seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); |
ca40b714 | 149 | seq_printf(m, "Features:"); |
f579903e | 150 | #ifdef CONFIG_CIFS_DFS_UPCALL |
ca40b714 | 151 | seq_printf(m, " dfs"); |
f579903e SJ |
152 | #endif |
153 | #ifdef CONFIG_CIFS_FSCACHE | |
ca40b714 | 154 | seq_printf(m, " fscache"); |
f579903e SJ |
155 | #endif |
156 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
ca40b714 | 157 | seq_printf(m, " lanman"); |
f579903e SJ |
158 | #endif |
159 | #ifdef CONFIG_CIFS_POSIX | |
ca40b714 | 160 | seq_printf(m, " posix"); |
f579903e SJ |
161 | #endif |
162 | #ifdef CONFIG_CIFS_UPCALL | |
ca40b714 | 163 | seq_printf(m, " spnego"); |
f579903e SJ |
164 | #endif |
165 | #ifdef CONFIG_CIFS_XATTR | |
ca40b714 JL |
166 | seq_printf(m, " xattr"); |
167 | #endif | |
168 | #ifdef CONFIG_CIFS_ACL | |
169 | seq_printf(m, " acl"); | |
f579903e SJ |
170 | #endif |
171 | seq_putc(m, '\n'); | |
f984c7b9 AD |
172 | seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); |
173 | seq_printf(m, "Servers:"); | |
1da177e4 LT |
174 | |
175 | i = 0; | |
3f9bcca7 | 176 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
177 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
178 | server = list_entry(tmp1, struct TCP_Server_Info, | |
14fbf50d | 179 | tcp_ses_list); |
9742805d | 180 | seq_printf(m, "\nNumber of credits: %d", server->credits); |
1da177e4 | 181 | i++; |
14fbf50d | 182 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 183 | ses = list_entry(tmp2, struct cifs_ses, |
14fbf50d JL |
184 | smb_ses_list); |
185 | if ((ses->serverDomain == NULL) || | |
186 | (ses->serverOS == NULL) || | |
187 | (ses->serverNOS == NULL)) { | |
1fa089ec SF |
188 | seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t", |
189 | i, ses->serverName, ses->ses_count, | |
190 | ses->capabilities, ses->status); | |
191 | if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) | |
192 | seq_printf(m, "Guest\t"); | |
193 | else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
194 | seq_printf(m, "Anonymous\t"); | |
14fbf50d JL |
195 | } else { |
196 | seq_printf(m, | |
f1987b44 JL |
197 | "\n%d) Name: %s Domain: %s Uses: %d OS:" |
198 | " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB" | |
221601c3 | 199 | " session status: %d\t", |
b8643e1b | 200 | i, ses->serverName, ses->serverDomain, |
14fbf50d | 201 | ses->ses_count, ses->serverOS, ses->serverNOS, |
221601c3 | 202 | ses->capabilities, ses->status); |
14fbf50d | 203 | } |
f984c7b9 | 204 | seq_printf(m, "TCP status: %d\n\tLocal Users To " |
14fbf50d JL |
205 | "Server: %d SecMode: 0x%x Req On Wire: %d", |
206 | server->tcpStatus, server->srv_count, | |
fc40f9cf | 207 | server->sec_mode, in_flight(server)); |
131afd0b SF |
208 | |
209 | #ifdef CONFIG_CIFS_STATS2 | |
f984c7b9 | 210 | seq_printf(m, " In Send: %d In MaxReq Wait: %d", |
789e6661 | 211 | atomic_read(&server->in_send), |
14fbf50d | 212 | atomic_read(&server->num_waiters)); |
131afd0b SF |
213 | #endif |
214 | ||
f1987b44 JL |
215 | seq_puts(m, "\n\tShares:"); |
216 | j = 0; | |
ba928f4d AA |
217 | |
218 | seq_printf(m, "\n\t%d) IPC: ", j); | |
219 | if (ses->tcon_ipc) | |
220 | cifs_debug_tcon(m, ses->tcon_ipc); | |
221 | else | |
222 | seq_puts(m, "none\n"); | |
223 | ||
f1987b44 | 224 | list_for_each(tmp3, &ses->tcon_list) { |
96daf2b0 | 225 | tcon = list_entry(tmp3, struct cifs_tcon, |
f1987b44 JL |
226 | tcon_list); |
227 | ++j; | |
ba928f4d AA |
228 | seq_printf(m, "\n\t%d) ", j); |
229 | cifs_debug_tcon(m, tcon); | |
f1987b44 JL |
230 | } |
231 | ||
232 | seq_puts(m, "\n\tMIDs:\n"); | |
1da177e4 LT |
233 | |
234 | spin_lock(&GlobalMid_Lock); | |
14fbf50d | 235 | list_for_each(tmp3, &server->pending_mid_q) { |
f1987b44 | 236 | mid_entry = list_entry(tmp3, struct mid_q_entry, |
1da177e4 | 237 | qhead); |
f1987b44 | 238 | seq_printf(m, "\tState: %d com: %d pid:" |
7c9421e1 PS |
239 | " %d cbdata: %p mid %llu\n", |
240 | mid_entry->mid_state, | |
241 | le16_to_cpu(mid_entry->command), | |
242 | mid_entry->pid, | |
243 | mid_entry->callback_data, | |
244 | mid_entry->mid); | |
1da177e4 | 245 | } |
221601c3 | 246 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 247 | } |
1da177e4 | 248 | } |
3f9bcca7 | 249 | spin_unlock(&cifs_tcp_ses_lock); |
f984c7b9 | 250 | seq_putc(m, '\n'); |
1da177e4 | 251 | |
1da177e4 | 252 | /* BB add code to dump additional info such as TCP session info now */ |
f984c7b9 AD |
253 | return 0; |
254 | } | |
1da177e4 | 255 | |
f984c7b9 AD |
256 | static int cifs_debug_data_proc_open(struct inode *inode, struct file *file) |
257 | { | |
258 | return single_open(file, cifs_debug_data_proc_show, NULL); | |
1da177e4 LT |
259 | } |
260 | ||
f984c7b9 | 261 | static const struct file_operations cifs_debug_data_proc_fops = { |
f984c7b9 AD |
262 | .open = cifs_debug_data_proc_open, |
263 | .read = seq_read, | |
264 | .llseek = seq_lseek, | |
265 | .release = single_release, | |
266 | }; | |
1047abc1 | 267 | |
f984c7b9 AD |
268 | #ifdef CONFIG_CIFS_STATS |
269 | static ssize_t cifs_stats_proc_write(struct file *file, | |
270 | const char __user *buffer, size_t count, loff_t *ppos) | |
1047abc1 | 271 | { |
28e2aed2 | 272 | bool bv; |
221601c3 | 273 | int rc; |
f1987b44 JL |
274 | struct list_head *tmp1, *tmp2, *tmp3; |
275 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
276 | struct cifs_ses *ses; |
277 | struct cifs_tcon *tcon; | |
1047abc1 | 278 | |
1404297e KC |
279 | rc = kstrtobool_from_user(buffer, count, &bv); |
280 | if (rc == 0) { | |
4498eed5 SF |
281 | #ifdef CONFIG_CIFS_STATS2 |
282 | atomic_set(&totBufAllocCount, 0); | |
283 | atomic_set(&totSmBufAllocCount, 0); | |
284 | #endif /* CONFIG_CIFS_STATS2 */ | |
3f9bcca7 | 285 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
286 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
287 | server = list_entry(tmp1, struct TCP_Server_Info, | |
288 | tcp_ses_list); | |
c2b3382c | 289 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 290 | ses = list_entry(tmp2, struct cifs_ses, |
c2b3382c | 291 | smb_ses_list); |
f1987b44 JL |
292 | list_for_each(tmp3, &ses->tcon_list) { |
293 | tcon = list_entry(tmp3, | |
96daf2b0 | 294 | struct cifs_tcon, |
f1987b44 JL |
295 | tcon_list); |
296 | atomic_set(&tcon->num_smbs_sent, 0); | |
44c58186 PS |
297 | if (server->ops->clear_stats) |
298 | server->ops->clear_stats(tcon); | |
f1987b44 JL |
299 | } |
300 | } | |
1047abc1 | 301 | } |
3f9bcca7 | 302 | spin_unlock(&cifs_tcp_ses_lock); |
1404297e KC |
303 | } else { |
304 | return rc; | |
1047abc1 SF |
305 | } |
306 | ||
221601c3 | 307 | return count; |
1047abc1 SF |
308 | } |
309 | ||
f984c7b9 | 310 | static int cifs_stats_proc_show(struct seq_file *m, void *v) |
1da177e4 | 311 | { |
f984c7b9 | 312 | int i; |
f1987b44 JL |
313 | struct list_head *tmp1, *tmp2, *tmp3; |
314 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
315 | struct cifs_ses *ses; |
316 | struct cifs_tcon *tcon; | |
1da177e4 | 317 | |
f984c7b9 | 318 | seq_printf(m, |
1da177e4 LT |
319 | "Resources in use\nCIFS Session: %d\n", |
320 | sesInfoAllocCount.counter); | |
f984c7b9 | 321 | seq_printf(m, "Share (unique mount targets): %d\n", |
1da177e4 | 322 | tconInfoAllocCount.counter); |
f984c7b9 | 323 | seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", |
b8643e1b SF |
324 | bufAllocCount.counter, |
325 | cifs_min_rcv + tcpSesAllocCount.counter); | |
f984c7b9 | 326 | seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", |
221601c3 | 327 | smBufAllocCount.counter, cifs_min_small); |
07475ffb | 328 | #ifdef CONFIG_CIFS_STATS2 |
f984c7b9 | 329 | seq_printf(m, "Total Large %d Small %d Allocations\n", |
07475ffb | 330 | atomic_read(&totBufAllocCount), |
221601c3 | 331 | atomic_read(&totSmBufAllocCount)); |
07475ffb SF |
332 | #endif /* CONFIG_CIFS_STATS2 */ |
333 | ||
8097531a | 334 | seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); |
f984c7b9 | 335 | seq_printf(m, |
1da177e4 | 336 | "\n%d session %d share reconnects\n", |
221601c3 | 337 | tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); |
1da177e4 | 338 | |
f984c7b9 | 339 | seq_printf(m, |
1da177e4 | 340 | "Total vfs operations: %d maximum at one time: %d\n", |
221601c3 | 341 | GlobalCurrentXid, GlobalMaxActiveXid); |
1da177e4 LT |
342 | |
343 | i = 0; | |
3f9bcca7 | 344 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
345 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
346 | server = list_entry(tmp1, struct TCP_Server_Info, | |
347 | tcp_ses_list); | |
348 | list_for_each(tmp2, &server->smb_ses_list) { | |
96daf2b0 | 349 | ses = list_entry(tmp2, struct cifs_ses, |
f1987b44 JL |
350 | smb_ses_list); |
351 | list_for_each(tmp3, &ses->tcon_list) { | |
352 | tcon = list_entry(tmp3, | |
96daf2b0 | 353 | struct cifs_tcon, |
f1987b44 JL |
354 | tcon_list); |
355 | i++; | |
356 | seq_printf(m, "\n%d) %s", i, tcon->treeName); | |
357 | if (tcon->need_reconnect) | |
358 | seq_puts(m, "\tDISCONNECTED "); | |
44c58186 PS |
359 | seq_printf(m, "\nSMBs: %d", |
360 | atomic_read(&tcon->num_smbs_sent)); | |
361 | if (server->ops->print_stats) | |
362 | server->ops->print_stats(m, tcon); | |
f1987b44 JL |
363 | } |
364 | } | |
1da177e4 | 365 | } |
3f9bcca7 | 366 | spin_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 367 | |
f984c7b9 AD |
368 | seq_putc(m, '\n'); |
369 | return 0; | |
370 | } | |
221601c3 | 371 | |
f984c7b9 AD |
372 | static int cifs_stats_proc_open(struct inode *inode, struct file *file) |
373 | { | |
374 | return single_open(file, cifs_stats_proc_show, NULL); | |
1da177e4 | 375 | } |
f984c7b9 AD |
376 | |
377 | static const struct file_operations cifs_stats_proc_fops = { | |
f984c7b9 AD |
378 | .open = cifs_stats_proc_open, |
379 | .read = seq_read, | |
380 | .llseek = seq_lseek, | |
381 | .release = single_release, | |
382 | .write = cifs_stats_proc_write, | |
383 | }; | |
90c81e0b | 384 | #endif /* STATS */ |
1da177e4 LT |
385 | |
386 | static struct proc_dir_entry *proc_fs_cifs; | |
f984c7b9 | 387 | static const struct file_operations cifsFYI_proc_fops; |
f984c7b9 AD |
388 | static const struct file_operations cifs_lookup_cache_proc_fops; |
389 | static const struct file_operations traceSMB_proc_fops; | |
f984c7b9 | 390 | static const struct file_operations cifs_security_flags_proc_fops; |
f984c7b9 | 391 | static const struct file_operations cifs_linux_ext_proc_fops; |
1da177e4 LT |
392 | |
393 | void | |
394 | cifs_proc_init(void) | |
395 | { | |
36a5aeb8 | 396 | proc_fs_cifs = proc_mkdir("fs/cifs", NULL); |
1da177e4 LT |
397 | if (proc_fs_cifs == NULL) |
398 | return; | |
399 | ||
f984c7b9 | 400 | proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops); |
1da177e4 LT |
401 | |
402 | #ifdef CONFIG_CIFS_STATS | |
f984c7b9 | 403 | proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops); |
90c81e0b | 404 | #endif /* STATS */ |
f984c7b9 AD |
405 | proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops); |
406 | proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops); | |
99b1f5b2 SF |
407 | proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs, |
408 | &cifs_linux_ext_proc_fops); | |
99b1f5b2 SF |
409 | proc_create("SecurityFlags", 0, proc_fs_cifs, |
410 | &cifs_security_flags_proc_fops); | |
411 | proc_create("LookupCacheEnabled", 0, proc_fs_cifs, | |
412 | &cifs_lookup_cache_proc_fops); | |
1da177e4 LT |
413 | } |
414 | ||
415 | void | |
416 | cifs_proc_clean(void) | |
417 | { | |
418 | if (proc_fs_cifs == NULL) | |
419 | return; | |
420 | ||
421 | remove_proc_entry("DebugData", proc_fs_cifs); | |
422 | remove_proc_entry("cifsFYI", proc_fs_cifs); | |
423 | remove_proc_entry("traceSMB", proc_fs_cifs); | |
424 | #ifdef CONFIG_CIFS_STATS | |
425 | remove_proc_entry("Stats", proc_fs_cifs); | |
426 | #endif | |
221601c3 | 427 | remove_proc_entry("SecurityFlags", proc_fs_cifs); |
221601c3 | 428 | remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); |
221601c3 | 429 | remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); |
36a5aeb8 | 430 | remove_proc_entry("fs/cifs", NULL); |
1da177e4 LT |
431 | } |
432 | ||
f984c7b9 | 433 | static int cifsFYI_proc_show(struct seq_file *m, void *v) |
1da177e4 | 434 | { |
f984c7b9 AD |
435 | seq_printf(m, "%d\n", cifsFYI); |
436 | return 0; | |
437 | } | |
1da177e4 | 438 | |
f984c7b9 AD |
439 | static int cifsFYI_proc_open(struct inode *inode, struct file *file) |
440 | { | |
441 | return single_open(file, cifsFYI_proc_show, NULL); | |
1da177e4 | 442 | } |
f984c7b9 AD |
443 | |
444 | static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, | |
445 | size_t count, loff_t *ppos) | |
1da177e4 | 446 | { |
1404297e | 447 | char c[2] = { '\0' }; |
28e2aed2 | 448 | bool bv; |
1da177e4 LT |
449 | int rc; |
450 | ||
1404297e | 451 | rc = get_user(c[0], buffer); |
1da177e4 LT |
452 | if (rc) |
453 | return rc; | |
1404297e | 454 | if (strtobool(c, &bv) == 0) |
28e2aed2 | 455 | cifsFYI = bv; |
1404297e KC |
456 | else if ((c[0] > '1') && (c[0] <= '9')) |
457 | cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ | |
1da177e4 LT |
458 | |
459 | return count; | |
460 | } | |
461 | ||
f984c7b9 | 462 | static const struct file_operations cifsFYI_proc_fops = { |
f984c7b9 AD |
463 | .open = cifsFYI_proc_open, |
464 | .read = seq_read, | |
465 | .llseek = seq_lseek, | |
466 | .release = single_release, | |
467 | .write = cifsFYI_proc_write, | |
468 | }; | |
1da177e4 | 469 | |
f984c7b9 AD |
470 | static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) |
471 | { | |
472 | seq_printf(m, "%d\n", linuxExtEnabled); | |
473 | return 0; | |
474 | } | |
1da177e4 | 475 | |
f984c7b9 AD |
476 | static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) |
477 | { | |
478 | return single_open(file, cifs_linux_ext_proc_show, NULL); | |
1da177e4 | 479 | } |
f984c7b9 AD |
480 | |
481 | static ssize_t cifs_linux_ext_proc_write(struct file *file, | |
482 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 483 | { |
221601c3 SF |
484 | int rc; |
485 | ||
1404297e | 486 | rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); |
221601c3 SF |
487 | if (rc) |
488 | return rc; | |
28e2aed2 | 489 | |
221601c3 | 490 | return count; |
1da177e4 LT |
491 | } |
492 | ||
f984c7b9 | 493 | static const struct file_operations cifs_linux_ext_proc_fops = { |
f984c7b9 AD |
494 | .open = cifs_linux_ext_proc_open, |
495 | .read = seq_read, | |
496 | .llseek = seq_lseek, | |
497 | .release = single_release, | |
498 | .write = cifs_linux_ext_proc_write, | |
499 | }; | |
1da177e4 | 500 | |
f984c7b9 | 501 | static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) |
1da177e4 | 502 | { |
f984c7b9 AD |
503 | seq_printf(m, "%d\n", lookupCacheEnabled); |
504 | return 0; | |
505 | } | |
1da177e4 | 506 | |
f984c7b9 AD |
507 | static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) |
508 | { | |
509 | return single_open(file, cifs_lookup_cache_proc_show, NULL); | |
1da177e4 | 510 | } |
f984c7b9 AD |
511 | |
512 | static ssize_t cifs_lookup_cache_proc_write(struct file *file, | |
513 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 514 | { |
1da177e4 LT |
515 | int rc; |
516 | ||
1404297e | 517 | rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); |
1da177e4 LT |
518 | if (rc) |
519 | return rc; | |
28e2aed2 | 520 | |
1da177e4 LT |
521 | return count; |
522 | } | |
1da177e4 | 523 | |
f984c7b9 | 524 | static const struct file_operations cifs_lookup_cache_proc_fops = { |
f984c7b9 AD |
525 | .open = cifs_lookup_cache_proc_open, |
526 | .read = seq_read, | |
527 | .llseek = seq_lseek, | |
528 | .release = single_release, | |
529 | .write = cifs_lookup_cache_proc_write, | |
530 | }; | |
1da177e4 | 531 | |
f984c7b9 AD |
532 | static int traceSMB_proc_show(struct seq_file *m, void *v) |
533 | { | |
534 | seq_printf(m, "%d\n", traceSMB); | |
535 | return 0; | |
536 | } | |
1da177e4 | 537 | |
f984c7b9 AD |
538 | static int traceSMB_proc_open(struct inode *inode, struct file *file) |
539 | { | |
540 | return single_open(file, traceSMB_proc_show, NULL); | |
1da177e4 | 541 | } |
f984c7b9 AD |
542 | |
543 | static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, | |
544 | size_t count, loff_t *ppos) | |
1da177e4 | 545 | { |
1da177e4 LT |
546 | int rc; |
547 | ||
1404297e | 548 | rc = kstrtobool_from_user(buffer, count, &traceSMB); |
1da177e4 LT |
549 | if (rc) |
550 | return rc; | |
28e2aed2 | 551 | |
1da177e4 LT |
552 | return count; |
553 | } | |
554 | ||
f984c7b9 | 555 | static const struct file_operations traceSMB_proc_fops = { |
f984c7b9 AD |
556 | .open = traceSMB_proc_open, |
557 | .read = seq_read, | |
558 | .llseek = seq_lseek, | |
559 | .release = single_release, | |
560 | .write = traceSMB_proc_write, | |
561 | }; | |
1da177e4 | 562 | |
f984c7b9 AD |
563 | static int cifs_security_flags_proc_show(struct seq_file *m, void *v) |
564 | { | |
04912d6a | 565 | seq_printf(m, "0x%x\n", global_secflags); |
f984c7b9 AD |
566 | return 0; |
567 | } | |
1da177e4 | 568 | |
f984c7b9 AD |
569 | static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) |
570 | { | |
571 | return single_open(file, cifs_security_flags_proc_show, NULL); | |
1da177e4 | 572 | } |
f984c7b9 | 573 | |
52dfb446 JL |
574 | /* |
575 | * Ensure that if someone sets a MUST flag, that we disable all other MAY | |
576 | * flags except for the ones corresponding to the given MUST flag. If there are | |
577 | * multiple MUST flags, then try to prefer more secure ones. | |
578 | */ | |
579 | static void | |
580 | cifs_security_flags_handle_must_flags(unsigned int *flags) | |
581 | { | |
582 | unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; | |
583 | ||
584 | if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
585 | *flags = CIFSSEC_MUST_KRB5; | |
586 | else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
587 | *flags = CIFSSEC_MUST_NTLMSSP; | |
588 | else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) | |
589 | *flags = CIFSSEC_MUST_NTLMV2; | |
590 | else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM) | |
591 | *flags = CIFSSEC_MUST_NTLM; | |
7a1ceba0 NC |
592 | else if (CIFSSEC_MUST_LANMAN && |
593 | (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) | |
52dfb446 | 594 | *flags = CIFSSEC_MUST_LANMAN; |
7a1ceba0 NC |
595 | else if (CIFSSEC_MUST_PLNTXT && |
596 | (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) | |
52dfb446 JL |
597 | *flags = CIFSSEC_MUST_PLNTXT; |
598 | ||
599 | *flags |= signflags; | |
600 | } | |
601 | ||
f984c7b9 AD |
602 | static ssize_t cifs_security_flags_proc_write(struct file *file, |
603 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 604 | { |
7715dad8 | 605 | int rc; |
bdc4bf6e SF |
606 | unsigned int flags; |
607 | char flags_string[12]; | |
28e2aed2 | 608 | bool bv; |
bdc4bf6e | 609 | |
221601c3 | 610 | if ((count < 1) || (count > 11)) |
3979877e | 611 | return -EINVAL; |
1da177e4 | 612 | |
bdc4bf6e | 613 | memset(flags_string, 0, 12); |
3979877e | 614 | |
221601c3 | 615 | if (copy_from_user(flags_string, buffer, count)) |
bdc4bf6e | 616 | return -EFAULT; |
3979877e | 617 | |
221601c3 | 618 | if (count < 3) { |
bdc4bf6e | 619 | /* single char or single char followed by null */ |
1404297e | 620 | if (strtobool(flags_string, &bv) == 0) { |
28e2aed2 | 621 | global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; |
a013689d | 622 | return count; |
1404297e | 623 | } else if (!isdigit(flags_string[0])) { |
7715dad8 JL |
624 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", |
625 | flags_string); | |
a013689d SF |
626 | return -EINVAL; |
627 | } | |
bdc4bf6e | 628 | } |
bdc4bf6e | 629 | |
7715dad8 JL |
630 | /* else we have a number */ |
631 | rc = kstrtouint(flags_string, 0, &flags); | |
632 | if (rc) { | |
633 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", | |
634 | flags_string); | |
635 | return rc; | |
636 | } | |
bdc4bf6e | 637 | |
f96637be | 638 | cifs_dbg(FYI, "sec flags 0x%x\n", flags); |
bdc4bf6e | 639 | |
7715dad8 JL |
640 | if (flags == 0) { |
641 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); | |
bdc4bf6e SF |
642 | return -EINVAL; |
643 | } | |
1da177e4 | 644 | |
221601c3 | 645 | if (flags & ~CIFSSEC_MASK) { |
7715dad8 | 646 | cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", |
f96637be | 647 | flags & ~CIFSSEC_MASK); |
bdc4bf6e SF |
648 | return -EINVAL; |
649 | } | |
7715dad8 | 650 | |
52dfb446 JL |
651 | cifs_security_flags_handle_must_flags(&flags); |
652 | ||
bdc4bf6e | 653 | /* flags look ok - update the global security flags for cifs module */ |
04912d6a JL |
654 | global_secflags = flags; |
655 | if (global_secflags & CIFSSEC_MUST_SIGN) { | |
762e5ab7 | 656 | /* requiring signing implies signing is allowed */ |
04912d6a | 657 | global_secflags |= CIFSSEC_MAY_SIGN; |
f96637be | 658 | cifs_dbg(FYI, "packet signing now required\n"); |
04912d6a | 659 | } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { |
f96637be | 660 | cifs_dbg(FYI, "packet signing disabled\n"); |
762e5ab7 SF |
661 | } |
662 | /* BB should we turn on MAY flags for other MUST options? */ | |
1da177e4 LT |
663 | return count; |
664 | } | |
f984c7b9 AD |
665 | |
666 | static const struct file_operations cifs_security_flags_proc_fops = { | |
f984c7b9 AD |
667 | .open = cifs_security_flags_proc_open, |
668 | .read = seq_read, | |
669 | .llseek = seq_lseek, | |
670 | .release = single_release, | |
671 | .write = cifs_security_flags_proc_write, | |
672 | }; | |
90c81e0b | 673 | #else |
e086fcea | 674 | inline void cifs_proc_init(void) |
90c81e0b SF |
675 | { |
676 | } | |
677 | ||
e086fcea | 678 | inline void cifs_proc_clean(void) |
90c81e0b SF |
679 | { |
680 | } | |
681 | #endif /* PROC_FS */ |