1 /*
2 * mkquota.c --- create quota files for a filesystem
3 *
4 * Aditya Kali <adityakali@google.com>
5 */
6 #include "config.h"
7 #include <sys/types.h>
8 #include <sys/stat.h>
9 #include <unistd.h>
10 #include <errno.h>
11 #include <string.h>
12 #include <fcntl.h>
13
14 #include "ext2fs/ext2_fs.h"
15 #include "ext2fs/ext2fs.h"
16 #include "e2p/e2p.h"
17
18 #include "quotaio.h"
19 #include "quotaio_v2.h"
20 #include "quotaio_tree.h"
21 #include "common.h"
22 #include "dict.h"
23
24 /* Needed for architectures where sizeof(int) != sizeof(void *) */
25 #define UINT_TO_VOIDPTR(val) ((void *)(intptr_t)(val))
26 #define VOIDPTR_TO_UINT(ptr) ((unsigned int)(intptr_t)(ptr))
27
28 #if DEBUG_QUOTA
print_inode(struct ext2_inode * inode)29 static void print_inode(struct ext2_inode *inode)
30 {
31 if (!inode)
32 return;
33
34 fprintf(stderr, " i_mode = %d\n", inode->i_mode);
35 fprintf(stderr, " i_uid = %d\n", inode->i_uid);
36 fprintf(stderr, " i_size = %d\n", inode->i_size);
37 fprintf(stderr, " i_atime = %d\n", inode->i_atime);
38 fprintf(stderr, " i_ctime = %d\n", inode->i_ctime);
39 fprintf(stderr, " i_mtime = %d\n", inode->i_mtime);
40 fprintf(stderr, " i_dtime = %d\n", inode->i_dtime);
41 fprintf(stderr, " i_gid = %d\n", inode->i_gid);
42 fprintf(stderr, " i_links_count = %d\n", inode->i_links_count);
43 fprintf(stderr, " i_blocks = %d\n", inode->i_blocks);
44 fprintf(stderr, " i_flags = %d\n", inode->i_flags);
45
46 return;
47 }
48
print_dquot(const char * desc,struct dquot * dq)49 static void print_dquot(const char *desc, struct dquot *dq)
50 {
51 if (desc)
52 fprintf(stderr, "%s: ", desc);
53 fprintf(stderr, "%u %lld:%lld:%lld %lld:%lld:%lld\n",
54 dq->dq_id, (long long) dq->dq_dqb.dqb_curspace,
55 (long long) dq->dq_dqb.dqb_bsoftlimit,
56 (long long) dq->dq_dqb.dqb_bhardlimit,
57 (long long) dq->dq_dqb.dqb_curinodes,
58 (long long) dq->dq_dqb.dqb_isoftlimit,
59 (long long) dq->dq_dqb.dqb_ihardlimit);
60 }
61 #else
print_dquot(const char * desc EXT2FS_ATTR ((unused)),struct dquot * dq EXT2FS_ATTR ((unused)))62 static void print_dquot(const char *desc EXT2FS_ATTR((unused)),
63 struct dquot *dq EXT2FS_ATTR((unused)))
64 {
65 }
66 #endif
67
68 /*
69 * Returns 0 if not able to find the quota file, otherwise returns its
70 * inode number.
71 */
quota_file_exists(ext2_filsys fs,enum quota_type qtype)72 int quota_file_exists(ext2_filsys fs, enum quota_type qtype)
73 {
74 char qf_name[256];
75 errcode_t ret;
76 ext2_ino_t ino;
77
78 if (qtype >= MAXQUOTAS)
79 return -EINVAL;
80
81 quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
82
83 ret = ext2fs_lookup(fs, EXT2_ROOT_INO, qf_name, strlen(qf_name), 0,
84 &ino);
85 if (ret)
86 return 0;
87
88 return ino;
89 }
90
91 /*
92 * Set the value for reserved quota inode number field in superblock.
93 */
quota_set_sb_inum(ext2_filsys fs,ext2_ino_t ino,enum quota_type qtype)94 void quota_set_sb_inum(ext2_filsys fs, ext2_ino_t ino, enum quota_type qtype)
95 {
96 ext2_ino_t *inump;
97
98 inump = quota_sb_inump(fs->super, qtype);
99
100 log_debug("setting quota ino in superblock: ino=%u, type=%d", ino,
101 qtype);
102 *inump = ino;
103 ext2fs_mark_super_dirty(fs);
104 }
105
quota_remove_inode(ext2_filsys fs,enum quota_type qtype)106 errcode_t quota_remove_inode(ext2_filsys fs, enum quota_type qtype)
107 {
108 ext2_ino_t qf_ino;
109 errcode_t retval;
110
111 retval = ext2fs_read_bitmaps(fs);
112 if (retval) {
113 log_debug("Couldn't read bitmaps: %s", error_message(retval));
114 return retval;
115 }
116
117 qf_ino = *quota_sb_inump(fs->super, qtype);
118 if (qf_ino == 0)
119 return 0;
120 retval = quota_inode_truncate(fs, qf_ino);
121 if (retval)
122 return retval;
123 if (qf_ino >= EXT2_FIRST_INODE(fs->super)) {
124 struct ext2_inode inode;
125
126 retval = ext2fs_read_inode(fs, qf_ino, &inode);
127 if (!retval) {
128 memset(&inode, 0, sizeof(struct ext2_inode));
129 ext2fs_write_inode(fs, qf_ino, &inode);
130 }
131 ext2fs_inode_alloc_stats2(fs, qf_ino, -1, 0);
132 ext2fs_mark_ib_dirty(fs);
133
134 }
135 quota_set_sb_inum(fs, 0, qtype);
136
137 ext2fs_mark_super_dirty(fs);
138 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
139 retval = ext2fs_write_bitmaps(fs);
140 if (retval) {
141 log_debug("Couldn't write bitmaps: %s", error_message(retval));
142 return retval;
143 }
144 return 0;
145 }
146
write_dquots(dict_t * dict,struct quota_handle * qh)147 static void write_dquots(dict_t *dict, struct quota_handle *qh)
148 {
149 dnode_t *n;
150 struct dquot *dq;
151
152 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
153 dq = dnode_get(n);
154 if (dq) {
155 print_dquot("write", dq);
156 dq->dq_h = qh;
157 update_grace_times(dq);
158 qh->qh_ops->commit_dquot(dq);
159 }
160 }
161 }
162
quota_write_inode(quota_ctx_t qctx,unsigned int qtype_bits)163 errcode_t quota_write_inode(quota_ctx_t qctx, unsigned int qtype_bits)
164 {
165 int retval = 0;
166 enum quota_type qtype;
167 dict_t *dict;
168 ext2_filsys fs;
169 struct quota_handle *h = NULL;
170 int fmt = QFMT_VFS_V1;
171
172 if (!qctx)
173 return 0;
174
175 fs = qctx->fs;
176 retval = ext2fs_get_mem(sizeof(struct quota_handle), &h);
177 if (retval) {
178 log_debug("Unable to allocate quota handle: %s",
179 error_message(retval));
180 goto out;
181 }
182
183 retval = ext2fs_read_bitmaps(fs);
184 if (retval) {
185 log_debug("Couldn't read bitmaps: %s", error_message(retval));
186 goto out;
187 }
188
189 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
190 if (((1 << qtype) & qtype_bits) == 0)
191 continue;
192
193 dict = qctx->quota_dict[qtype];
194 if (!dict)
195 continue;
196
197 retval = quota_file_create(h, fs, qtype, fmt);
198 if (retval) {
199 log_debug("Cannot initialize io on quotafile: %s",
200 error_message(retval));
201 goto out;
202 }
203
204 write_dquots(dict, h);
205 retval = quota_file_close(qctx, h);
206 if (retval) {
207 log_debug("Cannot finish IO on new quotafile: %s",
208 strerror(errno));
209 if (h->qh_qf.e2_file)
210 ext2fs_file_close(h->qh_qf.e2_file);
211 (void) quota_inode_truncate(fs, h->qh_qf.ino);
212 goto out;
213 }
214
215 /* Set quota inode numbers in superblock. */
216 quota_set_sb_inum(fs, h->qh_qf.ino, qtype);
217 ext2fs_mark_super_dirty(fs);
218 ext2fs_mark_bb_dirty(fs);
219 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
220 }
221
222 retval = ext2fs_write_bitmaps(fs);
223 if (retval) {
224 log_debug("Couldn't write bitmaps: %s", error_message(retval));
225 goto out;
226 }
227 out:
228 if (h)
229 ext2fs_free_mem(&h);
230 return retval;
231 }
232
233 /******************************************************************/
234 /* Helper functions for computing quota in memory. */
235 /******************************************************************/
236
dict_uint_cmp(const void * cmp_ctx EXT2FS_ATTR ((unused)),const void * a,const void * b)237 static int dict_uint_cmp(const void *cmp_ctx EXT2FS_ATTR((unused)),
238 const void *a, const void *b)
239 {
240 unsigned int c, d;
241
242 c = VOIDPTR_TO_UINT(a);
243 d = VOIDPTR_TO_UINT(b);
244
245 if (c == d)
246 return 0;
247 else if (c > d)
248 return 1;
249 else
250 return -1;
251 }
252
project_quota_valid(quota_ctx_t qctx)253 static inline int project_quota_valid(quota_ctx_t qctx)
254 {
255 return (EXT2_INODE_SIZE(qctx->fs->super) > EXT2_GOOD_OLD_INODE_SIZE);
256 }
257
get_qid(struct ext2_inode_large * inode,enum quota_type qtype)258 static inline qid_t get_qid(struct ext2_inode_large *inode, enum quota_type qtype)
259 {
260 unsigned int inode_size;
261
262 switch (qtype) {
263 case USRQUOTA:
264 return inode_uid(*inode);
265 case GRPQUOTA:
266 return inode_gid(*inode);
267 case PRJQUOTA:
268 inode_size = EXT2_GOOD_OLD_INODE_SIZE +
269 inode->i_extra_isize;
270 if (inode_includes(inode_size, i_projid))
271 return inode_projid(*inode);
272 return 0;
273 default:
274 return 0;
275 }
276
277 return 0;
278 }
279
quota_dnode_free(dnode_t * node,void * context EXT2FS_ATTR ((unused)))280 static void quota_dnode_free(dnode_t *node,
281 void *context EXT2FS_ATTR((unused)))
282 {
283 void *ptr = node ? dnode_get(node) : 0;
284
285 ext2fs_free_mem(&ptr);
286 free(node);
287 }
288
289 /*
290 * Set up the quota tracking data structures.
291 */
quota_init_context(quota_ctx_t * qctx,ext2_filsys fs,unsigned int qtype_bits)292 errcode_t quota_init_context(quota_ctx_t *qctx, ext2_filsys fs,
293 unsigned int qtype_bits)
294 {
295 errcode_t err;
296 dict_t *dict;
297 quota_ctx_t ctx;
298 enum quota_type qtype;
299
300 err = ext2fs_get_mem(sizeof(struct quota_ctx), &ctx);
301 if (err) {
302 log_debug("Failed to allocate quota context");
303 return err;
304 }
305
306 memset(ctx, 0, sizeof(struct quota_ctx));
307 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
308 ctx->quota_file[qtype] = NULL;
309 if (qtype_bits) {
310 if (((1 << qtype) & qtype_bits) == 0)
311 continue;
312 } else {
313 if (*quota_sb_inump(fs->super, qtype) == 0)
314 continue;
315 }
316 err = ext2fs_get_mem(sizeof(dict_t), &dict);
317 if (err) {
318 log_debug("Failed to allocate dictionary");
319 quota_release_context(&ctx);
320 return err;
321 }
322 ctx->quota_dict[qtype] = dict;
323 dict_init(dict, DICTCOUNT_T_MAX, dict_uint_cmp);
324 dict_set_allocator(dict, NULL, quota_dnode_free, NULL);
325 }
326
327 ctx->fs = fs;
328 *qctx = ctx;
329 return 0;
330 }
331
quota_release_context(quota_ctx_t * qctx)332 void quota_release_context(quota_ctx_t *qctx)
333 {
334 errcode_t err;
335 dict_t *dict;
336 enum quota_type qtype;
337 quota_ctx_t ctx;
338
339 if (!qctx)
340 return;
341
342 ctx = *qctx;
343 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
344 dict = ctx->quota_dict[qtype];
345 ctx->quota_dict[qtype] = 0;
346 if (dict) {
347 dict_free_nodes(dict);
348 free(dict);
349 }
350 if (ctx->quota_file[qtype]) {
351 err = quota_file_close(ctx, ctx->quota_file[qtype]);
352 if (err) {
353 log_err("Cannot close quotafile: %s",
354 strerror(errno));
355 ext2fs_free_mem(&ctx->quota_file[qtype]);
356 }
357 }
358 }
359 *qctx = NULL;
360 free(ctx);
361 }
362
get_dq(dict_t * dict,__u32 key)363 static struct dquot *get_dq(dict_t *dict, __u32 key)
364 {
365 struct dquot *dq;
366 dnode_t *n;
367
368 n = dict_lookup(dict, UINT_TO_VOIDPTR(key));
369 if (n)
370 dq = dnode_get(n);
371 else {
372 if (ext2fs_get_mem(sizeof(struct dquot), &dq)) {
373 log_err("Unable to allocate dquot");
374 return NULL;
375 }
376 memset(dq, 0, sizeof(struct dquot));
377 dict_alloc_insert(dict, UINT_TO_VOIDPTR(key), dq);
378 dq->dq_id = key;
379 }
380 return dq;
381 }
382
383
384 /*
385 * Called to update the blocks used by a particular inode
386 */
quota_data_add(quota_ctx_t qctx,struct ext2_inode_large * inode,ext2_ino_t ino EXT2FS_ATTR ((unused)),qsize_t space)387 void quota_data_add(quota_ctx_t qctx, struct ext2_inode_large *inode,
388 ext2_ino_t ino EXT2FS_ATTR((unused)),
389 qsize_t space)
390 {
391 struct dquot *dq;
392 dict_t *dict;
393 enum quota_type qtype;
394
395 if (!qctx)
396 return;
397
398 log_debug("ADD_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
399 inode_uid(*inode),
400 inode_gid(*inode), space);
401 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
402 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
403 continue;
404 dict = qctx->quota_dict[qtype];
405 if (dict) {
406 dq = get_dq(dict, get_qid(inode, qtype));
407 if (dq)
408 dq->dq_dqb.dqb_curspace += space;
409 }
410 }
411 }
412
413 /*
414 * Called to remove some blocks used by a particular inode
415 */
quota_data_sub(quota_ctx_t qctx,struct ext2_inode_large * inode,ext2_ino_t ino EXT2FS_ATTR ((unused)),qsize_t space)416 void quota_data_sub(quota_ctx_t qctx, struct ext2_inode_large *inode,
417 ext2_ino_t ino EXT2FS_ATTR((unused)),
418 qsize_t space)
419 {
420 struct dquot *dq;
421 dict_t *dict;
422 enum quota_type qtype;
423
424 if (!qctx)
425 return;
426
427 log_debug("SUB_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
428 inode_uid(*inode),
429 inode_gid(*inode), space);
430 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
431 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
432 continue;
433 dict = qctx->quota_dict[qtype];
434 if (dict) {
435 dq = get_dq(dict, get_qid(inode, qtype));
436 dq->dq_dqb.dqb_curspace -= space;
437 }
438 }
439 }
440
441 /*
442 * Called to count the files used by an inode's user/group
443 */
quota_data_inodes(quota_ctx_t qctx,struct ext2_inode_large * inode,ext2_ino_t ino EXT2FS_ATTR ((unused)),int adjust)444 void quota_data_inodes(quota_ctx_t qctx, struct ext2_inode_large *inode,
445 ext2_ino_t ino EXT2FS_ATTR((unused)), int adjust)
446 {
447 struct dquot *dq;
448 dict_t *dict;
449 enum quota_type qtype;
450
451 if (!qctx)
452 return;
453
454 log_debug("ADJ_INODE: Inode: %u, UID/GID: %u/%u, adjust: %d", ino,
455 inode_uid(*inode),
456 inode_gid(*inode), adjust);
457 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
458 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
459 continue;
460 dict = qctx->quota_dict[qtype];
461 if (dict) {
462 dq = get_dq(dict, get_qid(inode, qtype));
463 dq->dq_dqb.dqb_curinodes += adjust;
464 }
465 }
466 }
467
quota_compute_usage(quota_ctx_t qctx)468 errcode_t quota_compute_usage(quota_ctx_t qctx)
469 {
470 ext2_filsys fs;
471 ext2_ino_t ino;
472 errcode_t ret;
473 struct ext2_inode_large *inode;
474 int inode_size;
475 qsize_t space;
476 ext2_inode_scan scan;
477
478 if (!qctx)
479 return 0;
480
481 fs = qctx->fs;
482 ret = ext2fs_open_inode_scan(fs, 0, &scan);
483 if (ret) {
484 log_err("while opening inode scan. ret=%ld", ret);
485 return ret;
486 }
487 inode_size = fs->super->s_inode_size;
488 inode = malloc(inode_size);
489 if (!inode) {
490 ext2fs_close_inode_scan(scan);
491 return ENOMEM;
492 }
493 while (1) {
494 ret = ext2fs_get_next_inode_full(scan, &ino,
495 EXT2_INODE(inode), inode_size);
496 if (ret) {
497 log_err("while getting next inode. ret=%ld", ret);
498 ext2fs_close_inode_scan(scan);
499 free(inode);
500 return ret;
501 }
502 if (ino == 0)
503 break;
504 if (inode->i_links_count &&
505 (ino == EXT2_ROOT_INO ||
506 ino >= EXT2_FIRST_INODE(fs->super))) {
507 space = ext2fs_get_stat_i_blocks(fs,
508 EXT2_INODE(inode)) << 9;
509 quota_data_add(qctx, inode, ino, space);
510 quota_data_inodes(qctx, inode, ino, +1);
511 }
512 }
513
514 ext2fs_close_inode_scan(scan);
515 free(inode);
516 return 0;
517 }
518
519 struct scan_dquots_data {
520 dict_t *quota_dict;
521 int update_limits; /* update limits from disk */
522 int update_usage;
523 int check_consistency;
524 int usage_is_inconsistent;
525 };
526
scan_dquots_callback(struct dquot * dquot,void * cb_data)527 static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
528 {
529 struct scan_dquots_data *scan_data = cb_data;
530 dict_t *quota_dict = scan_data->quota_dict;
531 struct dquot *dq;
532
533 dq = get_dq(quota_dict, dquot->dq_id);
534 dq->dq_id = dquot->dq_id;
535 dq->dq_flags |= DQF_SEEN;
536
537 print_dquot("mem", dq);
538 print_dquot("dsk", dquot);
539
540 /* Check if there is inconsistency */
541 if (scan_data->check_consistency &&
542 (dq->dq_dqb.dqb_curspace != dquot->dq_dqb.dqb_curspace ||
543 dq->dq_dqb.dqb_curinodes != dquot->dq_dqb.dqb_curinodes)) {
544 scan_data->usage_is_inconsistent = 1;
545 fprintf(stderr, "[QUOTA WARNING] Usage inconsistent for ID %u:"
546 "actual (%lld, %lld) != expected (%lld, %lld)\n",
547 dq->dq_id, (long long) dq->dq_dqb.dqb_curspace,
548 (long long) dq->dq_dqb.dqb_curinodes,
549 (long long) dquot->dq_dqb.dqb_curspace,
550 (long long) dquot->dq_dqb.dqb_curinodes);
551 }
552
553 if (scan_data->update_limits) {
554 dq->dq_dqb.dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
555 dq->dq_dqb.dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
556 dq->dq_dqb.dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
557 dq->dq_dqb.dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
558 }
559
560 if (scan_data->update_usage) {
561 dq->dq_dqb.dqb_curspace = dquot->dq_dqb.dqb_curspace;
562 dq->dq_dqb.dqb_curinodes = dquot->dq_dqb.dqb_curinodes;
563 }
564
565 return 0;
566 }
567
568 /*
569 * Read all dquots from quota file into memory
570 */
quota_read_all_dquots(struct quota_handle * qh,quota_ctx_t qctx,int update_limits EXT2FS_ATTR ((unused)))571 static errcode_t quota_read_all_dquots(struct quota_handle *qh,
572 quota_ctx_t qctx,
573 int update_limits EXT2FS_ATTR((unused)))
574 {
575 struct scan_dquots_data scan_data;
576
577 scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
578 scan_data.check_consistency = 0;
579 scan_data.update_limits = 0;
580 scan_data.update_usage = 1;
581
582 return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
583 }
584
585 /*
586 * Write all memory dquots into quota file
587 */
588 #if 0 /* currently unused, but may be useful in the future? */
589 static errcode_t quota_write_all_dquots(struct quota_handle *qh,
590 quota_ctx_t qctx)
591 {
592 errcode_t err;
593
594 err = ext2fs_read_bitmaps(qctx->fs);
595 if (err)
596 return err;
597 write_dquots(qctx->quota_dict[qh->qh_type], qh);
598 ext2fs_mark_bb_dirty(qctx->fs);
599 qctx->fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
600 ext2fs_write_bitmaps(qctx->fs);
601 return 0;
602 }
603 #endif
604
605 /*
606 * Updates the in-memory quota limits from the given quota inode.
607 */
quota_update_limits(quota_ctx_t qctx,ext2_ino_t qf_ino,enum quota_type qtype)608 errcode_t quota_update_limits(quota_ctx_t qctx, ext2_ino_t qf_ino,
609 enum quota_type qtype)
610 {
611 struct quota_handle *qh;
612 errcode_t err;
613
614 if (!qctx)
615 return 0;
616
617 err = ext2fs_get_mem(sizeof(struct quota_handle), &qh);
618 if (err) {
619 log_debug("Unable to allocate quota handle");
620 return err;
621 }
622
623 err = quota_file_open(qctx, qh, qf_ino, qtype, -1, 0);
624 if (err) {
625 log_debug("Open quota file failed");
626 goto out;
627 }
628
629 quota_read_all_dquots(qh, qctx, 1);
630
631 err = quota_file_close(qctx, qh);
632 if (err) {
633 log_debug("Cannot finish IO on new quotafile: %s",
634 strerror(errno));
635 if (qh->qh_qf.e2_file)
636 ext2fs_file_close(qh->qh_qf.e2_file);
637 }
638 out:
639 ext2fs_free_mem(&qh);
640 return err;
641 }
642
643 /*
644 * Compares the measured quota in qctx->quota_dict with that in the quota inode
645 * on disk and updates the limits in qctx->quota_dict. 'usage_inconsistent' is
646 * set to 1 if the supplied and on-disk quota usage values are not identical.
647 */
quota_compare_and_update(quota_ctx_t qctx,enum quota_type qtype,int * usage_inconsistent)648 errcode_t quota_compare_and_update(quota_ctx_t qctx, enum quota_type qtype,
649 int *usage_inconsistent)
650 {
651 struct quota_handle qh;
652 struct scan_dquots_data scan_data;
653 struct dquot *dq;
654 dnode_t *n;
655 dict_t *dict = qctx->quota_dict[qtype];
656 errcode_t err = 0;
657
658 if (!dict)
659 goto out;
660
661 err = quota_file_open(qctx, &qh, 0, qtype, -1, 0);
662 if (err) {
663 log_debug("Open quota file failed");
664 goto out;
665 }
666
667 scan_data.quota_dict = qctx->quota_dict[qtype];
668 scan_data.update_limits = 1;
669 scan_data.update_usage = 0;
670 scan_data.check_consistency = 1;
671 scan_data.usage_is_inconsistent = 0;
672 err = qh.qh_ops->scan_dquots(&qh, scan_dquots_callback, &scan_data);
673 if (err) {
674 log_debug("Error scanning dquots");
675 *usage_inconsistent = 1;
676 goto out_close_qh;
677 }
678
679 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
680 dq = dnode_get(n);
681 if (!dq)
682 continue;
683 if ((dq->dq_flags & DQF_SEEN) == 0) {
684 fprintf(stderr, "[QUOTA WARNING] "
685 "Missing quota entry ID %d\n", dq->dq_id);
686 scan_data.usage_is_inconsistent = 1;
687 }
688 }
689 *usage_inconsistent = scan_data.usage_is_inconsistent;
690
691 out_close_qh:
692 err = quota_file_close(qctx, &qh);
693 if (err) {
694 log_debug("Cannot close quotafile: %s", error_message(errno));
695 if (qh.qh_qf.e2_file)
696 ext2fs_file_close(qh.qh_qf.e2_file);
697 }
698 out:
699 return err;
700 }
701
parse_quota_opts(const char * opts,int (* func)(char *))702 int parse_quota_opts(const char *opts, int (*func)(char *))
703 {
704 char *buf, *token, *next, *p;
705 int len;
706 int ret = 0;
707
708 len = strlen(opts);
709 buf = malloc(len + 1);
710 if (!buf) {
711 fprintf(stderr,
712 "Couldn't allocate memory to parse quota options!\n");
713 return -ENOMEM;
714 }
715 strcpy(buf, opts);
716 for (token = buf; token && *token; token = next) {
717 p = strchr(token, ',');
718 next = 0;
719 if (p) {
720 *p = 0;
721 next = p + 1;
722 }
723 ret = func(token);
724 if (ret)
725 break;
726 }
727 free(buf);
728 return ret;
729 }
730