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  • Committer: Chuck Short
  • Date: 2010-09-28 20:38:39 UTC
  • Revision ID: zulcss@ubuntu.com-20100928203839-pgjulytsi9ue63x1
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source3/lib/sysquotas.c
 
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
 
46
static 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, ... */
 
102
static 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...*/
 
146
static 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
**********************************************************************/
 
172
static 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
 
 
183
static 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
                        TALLOC_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
 
 
332
invalid_param:
 
333
 
 
334
        TALLOC_FREE(lines);
 
335
        DEBUG(0,("The output of get_quota_command is invalid!\n"));
 
336
        return -1;
 
337
}
 
338
 
 
339
static 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
                        TALLOC_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
 
 
407
int 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
 
 
472
int 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