source: vendor/3.6.23/source3/lib/sysquotas.c

Last change on this file was 746, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated vendor to 3.6.9
File size: 12.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 System QUOTA function wrappers
4 Copyright (C) Stefan (metze) Metzmacher 2003
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19
20
21#include "includes.h"
22
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_QUOTA
25
26#ifdef HAVE_SYS_QUOTAS
27
28#if defined(HAVE_QUOTACTL_4A)
29
30/*#endif HAVE_QUOTACTL_4A */
31#elif defined(HAVE_QUOTACTL_4B)
32
33#error HAVE_QUOTACTL_4B not implemeted
34
35/*#endif HAVE_QUOTACTL_4B */
36#elif defined(HAVE_QUOTACTL_3)
37
38#error HAVE_QUOTACTL_3 not implemented
39
40/* #endif HAVE_QUOTACTL_3 */
41#else /* NO_QUOTACTL_USED */
42
43#endif /* NO_QUOTACTL_USED */
44
45#ifdef HAVE_MNTENT
46static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
47{
48 int ret = -1;
49 SMB_STRUCT_STAT S;
50 FILE *fp;
51 struct mntent *mnt;
52 SMB_DEV_T devno;
53
54 /* find the block device file */
55
56 if (!path||!mntpath||!bdev||!fs)
57 smb_panic("sys_path_to_bdev: called with NULL pointer");
58
59 (*mntpath) = NULL;
60 (*bdev) = NULL;
61 (*fs) = NULL;
62
63 if ( sys_stat(path, &S, false) == -1 )
64 return (-1);
65
66 devno = S.st_ex_dev ;
67
68 fp = setmntent(MOUNTED,"r");
69 if (fp == NULL) {
70 return -1;
71 }
72
73 while ((mnt = getmntent(fp))) {
74 if ( sys_stat(mnt->mnt_dir, &S, false) == -1 )
75 continue ;
76
77 if (S.st_ex_dev == devno) {
78 (*mntpath) = SMB_STRDUP(mnt->mnt_dir);
79 (*bdev) = SMB_STRDUP(mnt->mnt_fsname);
80 (*fs) = SMB_STRDUP(mnt->mnt_type);
81 if ((*mntpath)&&(*bdev)&&(*fs)) {
82 ret = 0;
83 } else {
84 SAFE_FREE(*mntpath);
85 SAFE_FREE(*bdev);
86 SAFE_FREE(*fs);
87 ret = -1;
88 }
89
90 break;
91 }
92 }
93
94 endmntent(fp) ;
95
96 return ret;
97}
98/* #endif HAVE_MNTENT */
99#elif defined(HAVE_DEVNM)
100
101/* we have this on HPUX, ... */
102static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
103{
104 int ret = -1;
105 char dev_disk[256];
106 SMB_STRUCT_STAT S;
107
108 if (!path||!mntpath||!bdev||!fs)
109 smb_panic("sys_path_to_bdev: called with NULL pointer");
110
111 (*mntpath) = NULL;
112 (*bdev) = NULL;
113 (*fs) = NULL;
114
115 /* find the block device file */
116
117 if ((ret=sys_stat(path, &S, false))!=0) {
118 return ret;
119 }
120
121 if ((ret=devnm(S_IFBLK, S.st_ex_dev, dev_disk, 256, 1))!=0) {
122 return ret;
123 }
124
125 /* we should get the mntpath right...
126 * but I don't know how
127 * --metze
128 */
129 (*mntpath) = SMB_STRDUP(path);
130 (*bdev) = SMB_STRDUP(dev_disk);
131 if ((*mntpath)&&(*bdev)) {
132 ret = 0;
133 } else {
134 SAFE_FREE(*mntpath);
135 SAFE_FREE(*bdev);
136 ret = -1;
137 }
138
139
140 return ret;
141}
142
143/* #endif HAVE_DEVNM */
144#else
145/* we should fake this up...*/
146static int sys_path_to_bdev(const char *path, char **mntpath, char **bdev, char **fs)
147{
148 int ret = -1;
149
150 if (!path||!mntpath||!bdev||!fs)
151 smb_panic("sys_path_to_bdev: called with NULL pointer");
152
153 (*mntpath) = NULL;
154 (*bdev) = NULL;
155 (*fs) = NULL;
156
157 (*mntpath) = SMB_STRDUP(path);
158 if (*mntpath) {
159 ret = 0;
160 } else {
161 SAFE_FREE(*mntpath);
162 ret = -1;
163 }
164
165 return ret;
166}
167#endif
168
169/*********************************************************************
170 Now the list of all filesystem specific quota systems we have found
171**********************************************************************/
172static struct {
173 const char *name;
174 int (*get_quota)(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
175 int (*set_quota)(const char *path, const char *bdev, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp);
176} sys_quota_backends[] = {
177#ifdef HAVE_XFS_QUOTAS
178 {"xfs", sys_get_xfs_quota, sys_set_xfs_quota},
179 {"gfs", sys_get_xfs_quota, sys_set_xfs_quota},
180 {"gfs2", sys_get_xfs_quota, sys_set_xfs_quota},
181#endif /* HAVE_XFS_QUOTAS */
182#ifdef HAVE_NFS_QUOTAS
183 {"nfs", sys_get_nfs_quota, sys_set_nfs_quota},
184 {"nfs4", sys_get_nfs_quota, sys_set_nfs_quota},
185#endif /* HAVE_NFS_QUOTAS */
186 {NULL, NULL, NULL}
187};
188
189static int command_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
190{
191 const char *get_quota_command;
192 char **lines = NULL;
193
194 get_quota_command = lp_get_quota_command();
195 if (get_quota_command && *get_quota_command) {
196 const char *p;
197 char *p2;
198 char *syscmd = NULL;
199 int _id = -1;
200
201 switch(qtype) {
202 case SMB_USER_QUOTA_TYPE:
203 case SMB_USER_FS_QUOTA_TYPE:
204 _id = id.uid;
205 break;
206 case SMB_GROUP_QUOTA_TYPE:
207 case SMB_GROUP_FS_QUOTA_TYPE:
208 _id = id.gid;
209 break;
210 default:
211 DEBUG(0,("invalid quota type.\n"));
212 return -1;
213 }
214
215 if (asprintf(&syscmd, "%s \"%s\" %d %d",
216 get_quota_command, path, qtype, _id) < 0) {
217 return -1;
218 }
219
220 DEBUG (3, ("get_quota: Running command %s\n", syscmd));
221
222 lines = file_lines_pload(syscmd, NULL);
223 SAFE_FREE(syscmd);
224
225 if (lines) {
226 char *line = lines[0];
227
228 DEBUG (3, ("Read output from get_quota, \"%s\"\n", line));
229
230 /* we need to deal with long long unsigned here, if supported */
231
232 dp->qflags = (enum SMB_QUOTA_TYPE)strtoul(line, &p2, 10);
233 p = p2;
234 while (p && *p && isspace(*p)) {
235 p++;
236 }
237
238 if (p && *p) {
239 dp->curblocks = STR_TO_SMB_BIG_UINT(p, &p);
240 } else {
241 goto invalid_param;
242 }
243
244 while (p && *p && isspace(*p)) {
245 p++;
246 }
247
248 if (p && *p) {
249 dp->softlimit = STR_TO_SMB_BIG_UINT(p, &p);
250 } else {
251 goto invalid_param;
252 }
253
254 while (p && *p && isspace(*p)) {
255 p++;
256 }
257
258 if (p && *p) {
259 dp->hardlimit = STR_TO_SMB_BIG_UINT(p, &p);
260 } else {
261 goto invalid_param;
262 }
263
264 while (p && *p && isspace(*p)) {
265 p++;
266 }
267
268 if (p && *p) {
269 dp->curinodes = STR_TO_SMB_BIG_UINT(p, &p);
270 } else {
271 goto invalid_param;
272 }
273
274 while (p && *p && isspace(*p)) {
275 p++;
276 }
277
278 if (p && *p) {
279 dp->isoftlimit = STR_TO_SMB_BIG_UINT(p, &p);
280 } else {
281 goto invalid_param;
282 }
283
284 while (p && *p && isspace(*p)) {
285 p++;
286 }
287
288 if (p && *p) {
289 dp->ihardlimit = STR_TO_SMB_BIG_UINT(p, &p);
290 } else {
291 goto invalid_param;
292 }
293
294 while (p && *p && isspace(*p)) {
295 p++;
296 }
297
298 if (p && *p) {
299 dp->bsize = STR_TO_SMB_BIG_UINT(p, NULL);
300 } else {
301 dp->bsize = 1024;
302 }
303
304 TALLOC_FREE(lines);
305 lines = NULL;
306
307 DEBUG (3, ("Parsed output of get_quota, ...\n"));
308
309 DEBUGADD (5,(
310 "qflags:%u curblocks:%llu softlimit:%llu hardlimit:%llu\n"
311 "curinodes:%llu isoftlimit:%llu ihardlimit:%llu bsize:%llu\n",
312 dp->qflags,(long long unsigned)dp->curblocks,
313 (long long unsigned)dp->softlimit,(long long unsigned)dp->hardlimit,
314 (long long unsigned)dp->curinodes,
315 (long long unsigned)dp->isoftlimit,(long long unsigned)dp->ihardlimit,
316 (long long unsigned)dp->bsize));
317 return 0;
318 }
319
320 DEBUG (0, ("get_quota_command failed!\n"));
321 return -1;
322 }
323
324 errno = ENOSYS;
325 return -1;
326
327invalid_param:
328
329 TALLOC_FREE(lines);
330 DEBUG(0,("The output of get_quota_command is invalid!\n"));
331 return -1;
332}
333
334static int command_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
335{
336 const char *set_quota_command;
337
338 set_quota_command = lp_set_quota_command();
339 if (set_quota_command && *set_quota_command) {
340 char **lines = NULL;
341 char *syscmd = NULL;
342 int _id = -1;
343
344 switch(qtype) {
345 case SMB_USER_QUOTA_TYPE:
346 case SMB_USER_FS_QUOTA_TYPE:
347 _id = id.uid;
348 break;
349 case SMB_GROUP_QUOTA_TYPE:
350 case SMB_GROUP_FS_QUOTA_TYPE:
351 _id = id.gid;
352 break;
353 default:
354 return -1;
355 }
356
357 if (asprintf(&syscmd,
358 "%s \"%s\" %d %d "
359 "%u %llu %llu "
360 "%llu %llu %llu ",
361 set_quota_command, path, qtype, _id, dp->qflags,
362 (long long unsigned)dp->softlimit,(long long unsigned)dp->hardlimit,
363 (long long unsigned)dp->isoftlimit,(long long unsigned)dp->ihardlimit,
364 (long long unsigned)dp->bsize) < 0) {
365 return -1;
366 }
367
368 DEBUG (3, ("get_quota: Running command %s\n", syscmd));
369
370 lines = file_lines_pload(syscmd, NULL);
371 SAFE_FREE(syscmd);
372 if (lines) {
373 char *line = lines[0];
374
375 DEBUG (3, ("Read output from set_quota, \"%s\"\n", line));
376
377 TALLOC_FREE(lines);
378
379 return 0;
380 }
381 DEBUG (0, ("set_quota_command failed!\n"));
382 return -1;
383 }
384
385 errno = ENOSYS;
386 return -1;
387}
388
389int sys_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
390{
391 int ret = -1;
392 int i;
393 bool ready = False;
394 char *mntpath = NULL;
395 char *bdev = NULL;
396 char *fs = NULL;
397
398 if (!path||!dp)
399 smb_panic("sys_get_quota: called with NULL pointer");
400
401 if (command_get_quota(path, qtype, id, dp)==0) {
402 return 0;
403 } else if (errno != ENOSYS) {
404 return -1;
405 }
406
407 if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
408 DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
409 return ret;
410 }
411
412 errno = 0;
413 DEBUG(10,("sys_get_quota() uid(%u, %u)\n", (unsigned)getuid(), (unsigned)geteuid()));
414
415 for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].get_quota);i++) {
416 if (strcmp(fs,sys_quota_backends[i].name)==0) {
417 ret = sys_quota_backends[i].get_quota(mntpath, bdev, qtype, id, dp);
418 if (ret!=0) {
419 DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
420 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
421 } else {
422 DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
423 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
424 }
425 ready = True;
426 break;
427 }
428 }
429
430 if (!ready) {
431 /* use the default vfs quota functions */
432 ret=sys_get_vfs_quota(mntpath, bdev, qtype, id, dp);
433 if (ret!=0) {
434 DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s\n",
435 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
436 } else {
437 DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
438 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
439 }
440 }
441
442 SAFE_FREE(mntpath);
443 SAFE_FREE(bdev);
444 SAFE_FREE(fs);
445
446 if ((ret!=0)&& (errno == EDQUOT)) {
447 DEBUG(10,("sys_get_quota() warning over quota!\n"));
448 return 0;
449 }
450
451 return ret;
452}
453
454int sys_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
455{
456 int ret = -1;
457 int i;
458 bool ready = False;
459 char *mntpath = NULL;
460 char *bdev = NULL;
461 char *fs = NULL;
462
463 /* find the block device file */
464
465 if (!path||!dp)
466 smb_panic("get_smb_quota: called with NULL pointer");
467
468 if (command_set_quota(path, qtype, id, dp)==0) {
469 return 0;
470 } else if (errno != ENOSYS) {
471 return -1;
472 }
473
474 if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
475 DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
476 return ret;
477 }
478
479 errno = 0;
480 DEBUG(10,("sys_set_quota() uid(%u, %u)\n", (unsigned)getuid(), (unsigned)geteuid()));
481
482 for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].set_quota);i++) {
483 if (strcmp(fs,sys_quota_backends[i].name)==0) {
484 ret = sys_quota_backends[i].set_quota(mntpath, bdev, qtype, id, dp);
485 if (ret!=0) {
486 DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
487 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
488 } else {
489 DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
490 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
491 }
492 ready = True;
493 break;
494 }
495 }
496
497 if (!ready) {
498 /* use the default vfs quota functions */
499 ret=sys_set_vfs_quota(mntpath, bdev, qtype, id, dp);
500 if (ret!=0) {
501 DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
502 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
503 } else {
504 DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
505 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
506 }
507 }
508
509 SAFE_FREE(mntpath);
510 SAFE_FREE(bdev);
511 SAFE_FREE(fs);
512
513 if ((ret!=0)&& (errno == EDQUOT)) {
514 DEBUG(10,("sys_set_quota() warning over quota!\n"));
515 return 0;
516 }
517
518 return ret;
519}
520
521#else /* HAVE_SYS_QUOTAS */
522 void dummy_sysquotas_c(void);
523
524 void dummy_sysquotas_c(void)
525{
526 return;
527}
528#endif /* HAVE_SYS_QUOTAS */
529
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