2 * mkquota.c --- create quota files for a filesystem
4 * Aditya Kali <adityakali@google.com>
14 #include "ext2fs/ext2_fs.h"
15 #include "ext2fs/ext2fs.h"
19 #include "quotaio_v2.h"
20 #include "quotaio_tree.h"
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))
29 static void print_inode(struct ext2_inode *inode)
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);
49 static void print_dquot(const char *desc, struct dquot *dq)
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);
62 static void print_dquot(const char *desc EXT2FS_ATTR((unused)),
63 struct dquot *dq EXT2FS_ATTR((unused)))
69 * Returns 0 if not able to find the quota file, otherwise returns its
72 int quota_file_exists(ext2_filsys fs, enum quota_type qtype)
78 if (qtype >= MAXQUOTAS)
81 quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
83 ret = ext2fs_lookup(fs, EXT2_ROOT_INO, qf_name, strlen(qf_name), 0,
92 * Set the value for reserved quota inode number field in superblock.
94 void quota_set_sb_inum(ext2_filsys fs, ext2_ino_t ino, enum quota_type qtype)
98 inump = quota_sb_inump(fs->super, qtype);
100 log_debug("setting quota ino in superblock: ino=%u, type=%d", ino,
103 ext2fs_mark_super_dirty(fs);
106 errcode_t quota_remove_inode(ext2_filsys fs, enum quota_type qtype)
111 retval = ext2fs_read_bitmaps(fs);
113 log_debug("Couldn't read bitmaps: %s", error_message(retval));
117 qf_ino = *quota_sb_inump(fs->super, qtype);
120 retval = quota_inode_truncate(fs, qf_ino);
123 if (qf_ino >= EXT2_FIRST_INODE(fs->super)) {
124 struct ext2_inode inode;
126 retval = ext2fs_read_inode(fs, qf_ino, &inode);
128 memset(&inode, 0, sizeof(struct ext2_inode));
129 ext2fs_write_inode(fs, qf_ino, &inode);
131 ext2fs_inode_alloc_stats2(fs, qf_ino, -1, 0);
132 ext2fs_mark_ib_dirty(fs);
135 quota_set_sb_inum(fs, 0, qtype);
137 ext2fs_mark_super_dirty(fs);
138 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
139 retval = ext2fs_write_bitmaps(fs);
141 log_debug("Couldn't write bitmaps: %s", error_message(retval));
147 static void write_dquots(dict_t *dict, struct quota_handle *qh)
152 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
155 print_dquot("write", dq);
157 update_grace_times(dq);
158 qh->qh_ops->commit_dquot(dq);
163 errcode_t quota_write_inode(quota_ctx_t qctx, unsigned int qtype_bits)
166 enum quota_type qtype;
169 struct quota_handle *h = NULL;
170 int fmt = QFMT_VFS_V1;
176 retval = ext2fs_get_mem(sizeof(struct quota_handle), &h);
178 log_debug("Unable to allocate quota handle: %s",
179 error_message(retval));
183 retval = ext2fs_read_bitmaps(fs);
185 log_debug("Couldn't read bitmaps: %s", error_message(retval));
189 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
190 if (((1 << qtype) & qtype_bits) == 0)
193 dict = qctx->quota_dict[qtype];
197 retval = quota_file_create(h, fs, qtype, fmt);
199 log_debug("Cannot initialize io on quotafile: %s",
200 error_message(retval));
204 write_dquots(dict, h);
205 retval = quota_file_close(qctx, h);
207 log_debug("Cannot finish IO on new quotafile: %s",
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);
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;
222 retval = ext2fs_write_bitmaps(fs);
224 log_debug("Couldn't write bitmaps: %s", error_message(retval));
233 /******************************************************************/
234 /* Helper functions for computing quota in memory. */
235 /******************************************************************/
237 static int dict_uint_cmp(const void *a, const void *b)
241 c = VOIDPTR_TO_UINT(a);
242 d = VOIDPTR_TO_UINT(b);
252 static inline int project_quota_valid(quota_ctx_t qctx)
254 return (EXT2_INODE_SIZE(qctx->fs->super) > EXT2_GOOD_OLD_INODE_SIZE);
257 static inline qid_t get_qid(struct ext2_inode_large *inode, enum quota_type qtype)
259 unsigned int inode_size;
263 return inode_uid(*inode);
265 return inode_gid(*inode);
267 inode_size = EXT2_GOOD_OLD_INODE_SIZE +
268 inode->i_extra_isize;
269 if (inode_includes(inode_size, i_projid))
270 return inode_projid(*inode);
278 static void quota_dnode_free(dnode_t *node,
279 void *context EXT2FS_ATTR((unused)))
281 void *ptr = node ? dnode_get(node) : 0;
283 ext2fs_free_mem(&ptr);
288 * Set up the quota tracking data structures.
290 errcode_t quota_init_context(quota_ctx_t *qctx, ext2_filsys fs,
291 unsigned int qtype_bits)
296 enum quota_type qtype;
298 err = ext2fs_get_mem(sizeof(struct quota_ctx), &ctx);
300 log_debug("Failed to allocate quota context");
304 memset(ctx, 0, sizeof(struct quota_ctx));
305 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
306 ctx->quota_file[qtype] = NULL;
308 if (((1 << qtype) & qtype_bits) == 0)
311 if (*quota_sb_inump(fs->super, qtype) == 0)
314 err = ext2fs_get_mem(sizeof(dict_t), &dict);
316 log_debug("Failed to allocate dictionary");
317 quota_release_context(&ctx);
320 ctx->quota_dict[qtype] = dict;
321 dict_init(dict, DICTCOUNT_T_MAX, dict_uint_cmp);
322 dict_set_allocator(dict, NULL, quota_dnode_free, NULL);
330 void quota_release_context(quota_ctx_t *qctx)
334 enum quota_type qtype;
341 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
342 dict = ctx->quota_dict[qtype];
343 ctx->quota_dict[qtype] = 0;
345 dict_free_nodes(dict);
348 if (ctx->quota_file[qtype]) {
349 err = quota_file_close(ctx, ctx->quota_file[qtype]);
351 log_err("Cannot close quotafile: %s",
353 ext2fs_free_mem(&ctx->quota_file[qtype]);
361 static struct dquot *get_dq(dict_t *dict, __u32 key)
366 n = dict_lookup(dict, UINT_TO_VOIDPTR(key));
370 if (ext2fs_get_mem(sizeof(struct dquot), &dq)) {
371 log_err("Unable to allocate dquot");
374 memset(dq, 0, sizeof(struct dquot));
375 dict_alloc_insert(dict, UINT_TO_VOIDPTR(key), dq);
383 * Called to update the blocks used by a particular inode
385 void quota_data_add(quota_ctx_t qctx, struct ext2_inode_large *inode,
386 ext2_ino_t ino EXT2FS_ATTR((unused)),
391 enum quota_type qtype;
396 log_debug("ADD_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
398 inode_gid(*inode), space);
399 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
400 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
402 dict = qctx->quota_dict[qtype];
404 dq = get_dq(dict, get_qid(inode, qtype));
406 dq->dq_dqb.dqb_curspace += space;
412 * Called to remove some blocks used by a particular inode
414 void quota_data_sub(quota_ctx_t qctx, struct ext2_inode_large *inode,
415 ext2_ino_t ino EXT2FS_ATTR((unused)),
420 enum quota_type qtype;
425 log_debug("SUB_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
427 inode_gid(*inode), space);
428 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
429 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
431 dict = qctx->quota_dict[qtype];
433 dq = get_dq(dict, get_qid(inode, qtype));
434 dq->dq_dqb.dqb_curspace -= space;
440 * Called to count the files used by an inode's user/group
442 void quota_data_inodes(quota_ctx_t qctx, struct ext2_inode_large *inode,
443 ext2_ino_t ino EXT2FS_ATTR((unused)), int adjust)
447 enum quota_type qtype;
452 log_debug("ADJ_INODE: Inode: %u, UID/GID: %u/%u, adjust: %d", ino,
454 inode_gid(*inode), adjust);
455 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
456 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
458 dict = qctx->quota_dict[qtype];
460 dq = get_dq(dict, get_qid(inode, qtype));
461 dq->dq_dqb.dqb_curinodes += adjust;
466 errcode_t quota_compute_usage(quota_ctx_t qctx)
471 struct ext2_inode_large *inode;
474 ext2_inode_scan scan;
480 ret = ext2fs_open_inode_scan(fs, 0, &scan);
482 log_err("while opening inode scan. ret=%ld", ret);
485 inode_size = fs->super->s_inode_size;
486 inode = malloc(inode_size);
490 ret = ext2fs_get_next_inode_full(scan, &ino,
491 EXT2_INODE(inode), inode_size);
493 log_err("while getting next inode. ret=%ld", ret);
494 ext2fs_close_inode_scan(scan);
500 if (inode->i_links_count &&
501 (ino == EXT2_ROOT_INO ||
502 ino >= EXT2_FIRST_INODE(fs->super))) {
503 space = ext2fs_inode_i_blocks(fs,
504 EXT2_INODE(inode)) << 9;
505 quota_data_add(qctx, inode, ino, space);
506 quota_data_inodes(qctx, inode, ino, +1);
510 ext2fs_close_inode_scan(scan);
515 struct scan_dquots_data {
517 int update_limits; /* update limits from disk */
519 int check_consistency;
520 int usage_is_inconsistent;
523 static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
525 struct scan_dquots_data *scan_data = cb_data;
526 dict_t *quota_dict = scan_data->quota_dict;
529 dq = get_dq(quota_dict, dquot->dq_id);
530 dq->dq_id = dquot->dq_id;
531 dq->dq_flags |= DQF_SEEN;
533 print_dquot("mem", dq);
534 print_dquot("dsk", dquot);
536 /* Check if there is inconsistency */
537 if (scan_data->check_consistency &&
538 (dq->dq_dqb.dqb_curspace != dquot->dq_dqb.dqb_curspace ||
539 dq->dq_dqb.dqb_curinodes != dquot->dq_dqb.dqb_curinodes)) {
540 scan_data->usage_is_inconsistent = 1;
541 fprintf(stderr, "[QUOTA WARNING] Usage inconsistent for ID %u:"
542 "actual (%lld, %lld) != expected (%lld, %lld)\n",
543 dq->dq_id, (long long) dq->dq_dqb.dqb_curspace,
544 (long long) dq->dq_dqb.dqb_curinodes,
545 (long long) dquot->dq_dqb.dqb_curspace,
546 (long long) dquot->dq_dqb.dqb_curinodes);
549 if (scan_data->update_limits) {
550 dq->dq_dqb.dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
551 dq->dq_dqb.dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
552 dq->dq_dqb.dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
553 dq->dq_dqb.dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
556 if (scan_data->update_usage) {
557 dq->dq_dqb.dqb_curspace = dquot->dq_dqb.dqb_curspace;
558 dq->dq_dqb.dqb_curinodes = dquot->dq_dqb.dqb_curinodes;
565 * Read all dquots from quota file into memory
567 static errcode_t quota_read_all_dquots(struct quota_handle *qh,
568 quota_ctx_t qctx, int update_limits)
570 struct scan_dquots_data scan_data;
572 scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
573 scan_data.check_consistency = 0;
574 scan_data.update_limits = 0;
575 scan_data.update_usage = 1;
577 return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
581 * Write all memory dquots into quota file
583 #if 0 /* currently unused, but may be useful in the future? */
584 static errcode_t quota_write_all_dquots(struct quota_handle *qh,
589 err = ext2fs_read_bitmaps(qctx->fs);
592 write_dquots(qctx->quota_dict[qh->qh_type], qh);
593 ext2fs_mark_bb_dirty(qctx->fs);
594 qctx->fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
595 ext2fs_write_bitmaps(qctx->fs);
601 * Updates the in-memory quota limits from the given quota inode.
603 errcode_t quota_update_limits(quota_ctx_t qctx, ext2_ino_t qf_ino,
604 enum quota_type qtype)
606 struct quota_handle *qh;
612 err = ext2fs_get_mem(sizeof(struct quota_handle), &qh);
614 log_debug("Unable to allocate quota handle");
618 err = quota_file_open(qctx, qh, qf_ino, qtype, -1, 0);
620 log_debug("Open quota file failed");
624 quota_read_all_dquots(qh, qctx, 1);
626 err = quota_file_close(qctx, qh);
628 log_debug("Cannot finish IO on new quotafile: %s",
630 if (qh->qh_qf.e2_file)
631 ext2fs_file_close(qh->qh_qf.e2_file);
634 ext2fs_free_mem(&qh);
639 * Compares the measured quota in qctx->quota_dict with that in the quota inode
640 * on disk and updates the limits in qctx->quota_dict. 'usage_inconsistent' is
641 * set to 1 if the supplied and on-disk quota usage values are not identical.
643 errcode_t quota_compare_and_update(quota_ctx_t qctx, enum quota_type qtype,
644 int *usage_inconsistent)
646 struct quota_handle qh;
647 struct scan_dquots_data scan_data;
650 dict_t *dict = qctx->quota_dict[qtype];
656 err = quota_file_open(qctx, &qh, 0, qtype, -1, 0);
658 log_debug("Open quota file failed");
662 scan_data.quota_dict = qctx->quota_dict[qtype];
663 scan_data.update_limits = 1;
664 scan_data.update_usage = 0;
665 scan_data.check_consistency = 1;
666 scan_data.usage_is_inconsistent = 0;
667 err = qh.qh_ops->scan_dquots(&qh, scan_dquots_callback, &scan_data);
669 log_debug("Error scanning dquots");
673 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
677 if ((dq->dq_flags & DQF_SEEN) == 0) {
678 fprintf(stderr, "[QUOTA WARNING] "
679 "Missing quota entry ID %d\n", dq->dq_id);
680 scan_data.usage_is_inconsistent = 1;
683 *usage_inconsistent = scan_data.usage_is_inconsistent;
686 err = quota_file_close(qctx, &qh);
688 log_debug("Cannot close quotafile: %s", error_message(errno));
689 if (qh.qh_qf.e2_file)
690 ext2fs_file_close(qh.qh_qf.e2_file);
696 int parse_quota_opts(const char *opts, int (*func)(char *))
698 char *buf, *token, *next, *p;
703 buf = malloc(len + 1);
706 "Couldn't allocate memory to parse quota options!\n");
710 for (token = buf; token && *token; token = next) {
711 p = strchr(token, ',');