source: branches/samba-3.3.x/source/lib/sysquotas.c@ 206

Last change on this file since 206 was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
File size: 12.8 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) == -1 )
64 return (-1);
65
66 devno = S.st_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) == -1 )
75 continue ;
76
77 if (S.st_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))!=0) {
118 return ret;
119 }
120
121 if ((ret=devnm(S_IFBLK, S.st_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#endif /* HAVE_XFS_QUOTAS */
180 {NULL, NULL, NULL}
181};
182
183static int command_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
184{
185 const char *get_quota_command;
186 char **lines = NULL;
187
188 get_quota_command = lp_get_quota_command();
189 if (get_quota_command && *get_quota_command) {
190 const char *p;
191 char *p2;
192 char *syscmd = NULL;
193 int _id = -1;
194
195 switch(qtype) {
196 case SMB_USER_QUOTA_TYPE:
197 case SMB_USER_FS_QUOTA_TYPE:
198 _id = id.uid;
199 break;
200 case SMB_GROUP_QUOTA_TYPE:
201 case SMB_GROUP_FS_QUOTA_TYPE:
202 _id = id.gid;
203 break;
204 default:
205 DEBUG(0,("invalid quota type.\n"));
206 return -1;
207 }
208
209 if (asprintf(&syscmd, "%s \"%s\" %d %d",
210 get_quota_command, path, qtype, _id) < 0) {
211 return -1;
212 }
213
214 DEBUG (3, ("get_quota: Running command %s\n", syscmd));
215
216 lines = file_lines_pload(syscmd, NULL);
217 SAFE_FREE(syscmd);
218
219 if (lines) {
220 char *line = lines[0];
221
222 DEBUG (3, ("Read output from get_quota, \"%s\"\n", line));
223
224 /* we need to deal with long long unsigned here, if supported */
225
226 dp->qflags = (enum SMB_QUOTA_TYPE)strtoul(line, &p2, 10);
227 p = p2;
228 while (p && *p && isspace(*p)) {
229 p++;
230 }
231
232 if (p && *p) {
233 dp->curblocks = STR_TO_SMB_BIG_UINT(p, &p);
234 } else {
235 goto invalid_param;
236 }
237
238 while (p && *p && isspace(*p)) {
239 p++;
240 }
241
242 if (p && *p) {
243 dp->softlimit = STR_TO_SMB_BIG_UINT(p, &p);
244 } else {
245 goto invalid_param;
246 }
247
248 while (p && *p && isspace(*p)) {
249 p++;
250 }
251
252 if (p && *p) {
253 dp->hardlimit = STR_TO_SMB_BIG_UINT(p, &p);
254 } else {
255 goto invalid_param;
256 }
257
258 while (p && *p && isspace(*p)) {
259 p++;
260 }
261
262 if (p && *p) {
263 dp->curinodes = STR_TO_SMB_BIG_UINT(p, &p);
264 } else {
265 goto invalid_param;
266 }
267
268 while (p && *p && isspace(*p)) {
269 p++;
270 }
271
272 if (p && *p) {
273 dp->isoftlimit = STR_TO_SMB_BIG_UINT(p, &p);
274 } else {
275 goto invalid_param;
276 }
277
278 while (p && *p && isspace(*p)) {
279 p++;
280 }
281
282 if (p && *p) {
283 dp->ihardlimit = STR_TO_SMB_BIG_UINT(p, &p);
284 } else {
285 goto invalid_param;
286 }
287
288 while (p && *p && isspace(*p)) {
289 p++;
290 }
291
292 if (p && *p) {
293 dp->bsize = STR_TO_SMB_BIG_UINT(p, NULL);
294 } else {
295 dp->bsize = 1024;
296 }
297
298 file_lines_free(lines);
299 lines = NULL;
300
301 DEBUG (3, ("Parsed output of get_quota, ...\n"));
302
303#ifdef LARGE_SMB_OFF_T
304 DEBUGADD (5,(
305 "qflags:%u curblocks:%llu softlimit:%llu hardlimit:%llu\n"
306 "curinodes:%llu isoftlimit:%llu ihardlimit:%llu bsize:%llu\n",
307 dp->qflags,(long long unsigned)dp->curblocks,
308 (long long unsigned)dp->softlimit,(long long unsigned)dp->hardlimit,
309 (long long unsigned)dp->curinodes,
310 (long long unsigned)dp->isoftlimit,(long long unsigned)dp->ihardlimit,
311 (long long unsigned)dp->bsize));
312#else /* LARGE_SMB_OFF_T */
313 DEBUGADD (5,(
314 "qflags:%u curblocks:%lu softlimit:%lu hardlimit:%lu\n"
315 "curinodes:%lu isoftlimit:%lu ihardlimit:%lu bsize:%lu\n",
316 dp->qflags,(long unsigned)dp->curblocks,
317 (long unsigned)dp->softlimit,(long unsigned)dp->hardlimit,
318 (long unsigned)dp->curinodes,
319 (long unsigned)dp->isoftlimit,(long unsigned)dp->ihardlimit,
320 (long unsigned)dp->bsize));
321#endif /* LARGE_SMB_OFF_T */
322 return 0;
323 }
324
325 DEBUG (0, ("get_quota_command failed!\n"));
326 return -1;
327 }
328
329 errno = ENOSYS;
330 return -1;
331
332invalid_param:
333
334 file_lines_free(lines);
335 DEBUG(0,("The output of get_quota_command is invalid!\n"));
336 return -1;
337}
338
339static int command_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
340{
341 const char *set_quota_command;
342
343 set_quota_command = lp_set_quota_command();
344 if (set_quota_command && *set_quota_command) {
345 char **lines = NULL;
346 char *syscmd = NULL;
347 int _id = -1;
348
349 switch(qtype) {
350 case SMB_USER_QUOTA_TYPE:
351 case SMB_USER_FS_QUOTA_TYPE:
352 _id = id.uid;
353 break;
354 case SMB_GROUP_QUOTA_TYPE:
355 case SMB_GROUP_FS_QUOTA_TYPE:
356 _id = id.gid;
357 break;
358 default:
359 return -1;
360 }
361
362#ifdef LARGE_SMB_OFF_T
363 if (asprintf(&syscmd,
364 "%s \"%s\" %d %d "
365 "%u %llu %llu "
366 "%llu %llu %llu ",
367 set_quota_command, path, qtype, _id, dp->qflags,
368 (long long unsigned)dp->softlimit,(long long unsigned)dp->hardlimit,
369 (long long unsigned)dp->isoftlimit,(long long unsigned)dp->ihardlimit,
370 (long long unsigned)dp->bsize) < 0) {
371 return -1;
372 }
373#else /* LARGE_SMB_OFF_T */
374 if (asprintf(&syscmd,
375 "%s \"%s\" %d %d "
376 "%u %lu %lu "
377 "%lu %lu %lu ",
378 set_quota_command, path, qtype, _id, dp->qflags,
379 (long unsigned)dp->softlimit,(long unsigned)dp->hardlimit,
380 (long unsigned)dp->isoftlimit,(long unsigned)dp->ihardlimit,
381 (long unsigned)dp->bsize) < 0) {
382 return -1;
383 }
384#endif /* LARGE_SMB_OFF_T */
385
386 DEBUG (3, ("get_quota: Running command %s\n", syscmd));
387
388 lines = file_lines_pload(syscmd, NULL);
389 SAFE_FREE(syscmd);
390 if (lines) {
391 char *line = lines[0];
392
393 DEBUG (3, ("Read output from set_quota, \"%s\"\n", line));
394
395 file_lines_free(lines);
396
397 return 0;
398 }
399 DEBUG (0, ("set_quota_command failed!\n"));
400 return -1;
401 }
402
403 errno = ENOSYS;
404 return -1;
405}
406
407int sys_get_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
408{
409 int ret = -1;
410 int i;
411 bool ready = False;
412 char *mntpath = NULL;
413 char *bdev = NULL;
414 char *fs = NULL;
415
416 if (!path||!dp)
417 smb_panic("sys_get_quota: called with NULL pointer");
418
419 if (command_get_quota(path, qtype, id, dp)==0) {
420 return 0;
421 } else if (errno != ENOSYS) {
422 return -1;
423 }
424
425 if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
426 DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
427 return ret;
428 }
429
430 errno = 0;
431 DEBUG(10,("sys_get_quota() uid(%u, %u)\n", (unsigned)getuid(), (unsigned)geteuid()));
432
433 for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].get_quota);i++) {
434 if (strcmp(fs,sys_quota_backends[i].name)==0) {
435 ret = sys_quota_backends[i].get_quota(mntpath, bdev, qtype, id, dp);
436 if (ret!=0) {
437 DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
438 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
439 } else {
440 DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
441 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
442 }
443 ready = True;
444 break;
445 }
446 }
447
448 if (!ready) {
449 /* use the default vfs quota functions */
450 ret=sys_get_vfs_quota(mntpath, bdev, qtype, id, dp);
451 if (ret!=0) {
452 DEBUG(3,("sys_get_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s\n",
453 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
454 } else {
455 DEBUG(10,("sys_get_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
456 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
457 }
458 }
459
460 SAFE_FREE(mntpath);
461 SAFE_FREE(bdev);
462 SAFE_FREE(fs);
463
464 if ((ret!=0)&& (errno == EDQUOT)) {
465 DEBUG(10,("sys_get_quota() warning over quota!\n"));
466 return 0;
467 }
468
469 return ret;
470}
471
472int sys_set_quota(const char *path, enum SMB_QUOTA_TYPE qtype, unid_t id, SMB_DISK_QUOTA *dp)
473{
474 int ret = -1;
475 int i;
476 bool ready = False;
477 char *mntpath = NULL;
478 char *bdev = NULL;
479 char *fs = NULL;
480
481 /* find the block device file */
482
483 if (!path||!dp)
484 smb_panic("get_smb_quota: called with NULL pointer");
485
486 if (command_set_quota(path, qtype, id, dp)==0) {
487 return 0;
488 } else if (errno != ENOSYS) {
489 return -1;
490 }
491
492 if ((ret=sys_path_to_bdev(path,&mntpath,&bdev,&fs))!=0) {
493 DEBUG(0,("sys_path_to_bdev() failed for path [%s]!\n",path));
494 return ret;
495 }
496
497 errno = 0;
498 DEBUG(10,("sys_set_quota() uid(%u, %u)\n", (unsigned)getuid(), (unsigned)geteuid()));
499
500 for (i=0;(fs && sys_quota_backends[i].name && sys_quota_backends[i].set_quota);i++) {
501 if (strcmp(fs,sys_quota_backends[i].name)==0) {
502 ret = sys_quota_backends[i].set_quota(mntpath, bdev, qtype, id, dp);
503 if (ret!=0) {
504 DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
505 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
506 } else {
507 DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
508 fs,mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
509 }
510 ready = True;
511 break;
512 }
513 }
514
515 if (!ready) {
516 /* use the default vfs quota functions */
517 ret=sys_set_vfs_quota(mntpath, bdev, qtype, id, dp);
518 if (ret!=0) {
519 DEBUG(3,("sys_set_%s_quota() failed for mntpath[%s] bdev[%s] qtype[%d] id[%d]: %s.\n",
520 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid),strerror(errno)));
521 } else {
522 DEBUG(10,("sys_set_%s_quota() called for mntpath[%s] bdev[%s] qtype[%d] id[%d].\n",
523 "vfs",mntpath,bdev,qtype,(qtype==SMB_GROUP_QUOTA_TYPE?id.gid:id.uid)));
524 }
525 }
526
527 SAFE_FREE(mntpath);
528 SAFE_FREE(bdev);
529 SAFE_FREE(fs);
530
531 if ((ret!=0)&& (errno == EDQUOT)) {
532 DEBUG(10,("sys_set_quota() warning over quota!\n"));
533 return 0;
534 }
535
536 return ret;
537}
538
539#else /* HAVE_SYS_QUOTAS */
540 void dummy_sysquotas_c(void);
541
542 void dummy_sysquotas_c(void)
543{
544 return;
545}
546#endif /* HAVE_SYS_QUOTAS */
547
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