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, dq->dq_dqb.dqb_curspace,
55 dq->dq_dqb.dqb_bsoftlimit, dq->dq_dqb.dqb_bhardlimit,
56 dq->dq_dqb.dqb_curinodes,
57 dq->dq_dqb.dqb_isoftlimit, dq->dq_dqb.dqb_ihardlimit);
60 static void print_dquot(const char *desc EXT2FS_ATTR((unused)),
61 struct dquot *dq EXT2FS_ATTR((unused)))
67 * Returns 0 if not able to find the quota file, otherwise returns its
70 int quota_file_exists(ext2_filsys fs, enum quota_type qtype)
76 if (qtype >= MAXQUOTAS)
79 quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
81 ret = ext2fs_lookup(fs, EXT2_ROOT_INO, qf_name, strlen(qf_name), 0,
90 * Set the value for reserved quota inode number field in superblock.
92 void quota_set_sb_inum(ext2_filsys fs, ext2_ino_t ino, enum quota_type qtype)
96 inump = quota_sb_inump(fs->super, qtype);
98 log_debug("setting quota ino in superblock: ino=%u, type=%d", ino,
101 ext2fs_mark_super_dirty(fs);
104 errcode_t quota_remove_inode(ext2_filsys fs, enum quota_type qtype)
109 retval = ext2fs_read_bitmaps(fs);
111 log_debug("Couldn't read bitmaps: %s", error_message(retval));
115 qf_ino = *quota_sb_inump(fs->super, qtype);
118 retval = quota_inode_truncate(fs, qf_ino);
121 if (qf_ino >= EXT2_FIRST_INODE(fs->super)) {
122 struct ext2_inode inode;
124 retval = ext2fs_read_inode(fs, qf_ino, &inode);
126 memset(&inode, 0, sizeof(struct ext2_inode));
127 ext2fs_write_inode(fs, qf_ino, &inode);
129 ext2fs_inode_alloc_stats2(fs, qf_ino, -1, 0);
130 ext2fs_mark_ib_dirty(fs);
133 quota_set_sb_inum(fs, 0, qtype);
135 ext2fs_mark_super_dirty(fs);
136 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
137 retval = ext2fs_write_bitmaps(fs);
139 log_debug("Couldn't write bitmaps: %s", error_message(retval));
145 static void write_dquots(dict_t *dict, struct quota_handle *qh)
150 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
153 print_dquot("write", dq);
155 update_grace_times(dq);
156 qh->qh_ops->commit_dquot(dq);
161 errcode_t quota_write_inode(quota_ctx_t qctx, unsigned int qtype_bits)
164 enum quota_type qtype;
167 struct quota_handle *h = NULL;
168 int fmt = QFMT_VFS_V1;
174 retval = ext2fs_get_mem(sizeof(struct quota_handle), &h);
176 log_debug("Unable to allocate quota handle: %s",
177 error_message(retval));
181 retval = ext2fs_read_bitmaps(fs);
183 log_debug("Couldn't read bitmaps: %s", error_message(retval));
187 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
188 if (((1 << qtype) & qtype_bits) == 0)
191 dict = qctx->quota_dict[qtype];
195 retval = quota_file_create(h, fs, qtype, fmt);
197 log_debug("Cannot initialize io on quotafile");
201 write_dquots(dict, h);
202 retval = quota_file_close(qctx, h);
204 log_err("Cannot finish IO on new quotafile: %s",
206 if (h->qh_qf.e2_file)
207 ext2fs_file_close(h->qh_qf.e2_file);
208 (void) quota_inode_truncate(fs, h->qh_qf.ino);
212 /* Set quota inode numbers in superblock. */
213 quota_set_sb_inum(fs, h->qh_qf.ino, qtype);
214 ext2fs_mark_super_dirty(fs);
215 ext2fs_mark_bb_dirty(fs);
216 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
219 retval = ext2fs_write_bitmaps(fs);
221 log_debug("Couldn't write bitmaps: %s", error_message(retval));
230 /******************************************************************/
231 /* Helper functions for computing quota in memory. */
232 /******************************************************************/
234 static int dict_uint_cmp(const void *a, const void *b)
238 c = VOIDPTR_TO_UINT(a);
239 d = VOIDPTR_TO_UINT(b);
249 static inline qid_t get_qid(struct ext2_inode_large *inode, enum quota_type qtype)
251 unsigned int inode_size;
255 return inode_uid(*inode);
257 return inode_gid(*inode);
259 inode_size = EXT2_GOOD_OLD_INODE_SIZE +
260 inode->i_extra_isize;
261 if (inode_includes(inode_size, i_projid))
262 return inode_projid(*inode);
270 static void quota_dnode_free(dnode_t *node,
271 void *context EXT2FS_ATTR((unused)))
273 void *ptr = node ? dnode_get(node) : 0;
275 ext2fs_free_mem(&ptr);
280 * Set up the quota tracking data structures.
282 errcode_t quota_init_context(quota_ctx_t *qctx, ext2_filsys fs,
283 unsigned int qtype_bits)
288 enum quota_type qtype;
290 err = ext2fs_get_mem(sizeof(struct quota_ctx), &ctx);
292 log_debug("Failed to allocate quota context");
296 memset(ctx, 0, sizeof(struct quota_ctx));
297 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
298 ctx->quota_file[qtype] = NULL;
299 if (((1 << qtype) & qtype_bits) == 0)
301 err = ext2fs_get_mem(sizeof(dict_t), &dict);
303 log_debug("Failed to allocate dictionary");
304 quota_release_context(&ctx);
307 ctx->quota_dict[qtype] = dict;
308 dict_init(dict, DICTCOUNT_T_MAX, dict_uint_cmp);
309 dict_set_allocator(dict, NULL, quota_dnode_free, NULL);
317 void quota_release_context(quota_ctx_t *qctx)
321 enum quota_type qtype;
328 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
329 dict = ctx->quota_dict[qtype];
330 ctx->quota_dict[qtype] = 0;
332 dict_free_nodes(dict);
335 if (ctx->quota_file[qtype]) {
336 err = quota_file_close(ctx, ctx->quota_file[qtype]);
338 log_err("Cannot close quotafile: %s",
340 ext2fs_free_mem(&ctx->quota_file[qtype]);
348 static struct dquot *get_dq(dict_t *dict, __u32 key)
353 n = dict_lookup(dict, UINT_TO_VOIDPTR(key));
357 if (ext2fs_get_mem(sizeof(struct dquot), &dq)) {
358 log_err("Unable to allocate dquot");
361 memset(dq, 0, sizeof(struct dquot));
362 dict_alloc_insert(dict, UINT_TO_VOIDPTR(key), dq);
370 * Called to update the blocks used by a particular inode
372 void quota_data_add(quota_ctx_t qctx, struct ext2_inode_large *inode,
373 ext2_ino_t ino EXT2FS_ATTR((unused)),
378 enum quota_type qtype;
383 log_debug("ADD_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
385 inode_gid(*inode), space);
386 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
387 dict = qctx->quota_dict[qtype];
389 dq = get_dq(dict, get_qid(inode, qtype));
391 dq->dq_dqb.dqb_curspace += space;
397 * Called to remove some blocks used by a particular inode
399 void quota_data_sub(quota_ctx_t qctx, struct ext2_inode_large *inode,
400 ext2_ino_t ino EXT2FS_ATTR((unused)),
405 enum quota_type qtype;
410 log_debug("SUB_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
412 inode_gid(*inode), space);
413 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
414 dict = qctx->quota_dict[qtype];
416 dq = get_dq(dict, get_qid(inode, qtype));
417 dq->dq_dqb.dqb_curspace -= space;
423 * Called to count the files used by an inode's user/group
425 void quota_data_inodes(quota_ctx_t qctx, struct ext2_inode_large *inode,
426 ext2_ino_t ino EXT2FS_ATTR((unused)), int adjust)
430 enum quota_type qtype;
435 log_debug("ADJ_INODE: Inode: %u, UID/GID: %u/%u, adjust: %d", ino,
437 inode_gid(*inode), adjust);
438 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
439 dict = qctx->quota_dict[qtype];
441 dq = get_dq(dict, get_qid(inode, qtype));
442 dq->dq_dqb.dqb_curinodes += adjust;
447 errcode_t quota_compute_usage(quota_ctx_t qctx)
452 struct ext2_inode_large *inode;
455 ext2_inode_scan scan;
461 ret = ext2fs_open_inode_scan(fs, 0, &scan);
463 log_err("while opening inode scan. ret=%ld", ret);
466 inode_size = fs->super->s_inode_size;
467 inode = malloc(inode_size);
471 ret = ext2fs_get_next_inode_full(scan, &ino,
472 EXT2_INODE(inode), inode_size);
474 log_err("while getting next inode. ret=%ld", ret);
475 ext2fs_close_inode_scan(scan);
481 if (inode->i_links_count &&
482 (ino == EXT2_ROOT_INO ||
483 ino >= EXT2_FIRST_INODE(fs->super))) {
484 space = ext2fs_inode_i_blocks(fs,
485 EXT2_INODE(inode)) << 9;
486 quota_data_add(qctx, inode, ino, space);
487 quota_data_inodes(qctx, inode, ino, +1);
491 ext2fs_close_inode_scan(scan);
496 struct scan_dquots_data {
498 int update_limits; /* update limits from disk */
500 int usage_is_inconsistent;
503 static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
505 struct scan_dquots_data *scan_data = cb_data;
506 dict_t *quota_dict = scan_data->quota_dict;
509 dq = get_dq(quota_dict, dquot->dq_id);
510 dq->dq_id = dquot->dq_id;
511 dq->dq_flags |= DQF_SEEN;
513 print_dquot("mem", dq);
514 print_dquot("dsk", dquot);
516 /* Check if there is inconsistancy. */
517 if (dq->dq_dqb.dqb_curspace != dquot->dq_dqb.dqb_curspace ||
518 dq->dq_dqb.dqb_curinodes != dquot->dq_dqb.dqb_curinodes) {
519 scan_data->usage_is_inconsistent = 1;
520 fprintf(stderr, "[QUOTA WARNING] Usage inconsistent for ID %d:"
521 "actual (%llu, %llu) != expected (%llu, %llu)\n",
522 dq->dq_id, (long long)dq->dq_dqb.dqb_curspace,
523 (long long)dq->dq_dqb.dqb_curinodes,
524 (long long)dquot->dq_dqb.dqb_curspace,
525 (long long)dquot->dq_dqb.dqb_curinodes);
528 if (scan_data->update_limits) {
529 dq->dq_dqb.dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
530 dq->dq_dqb.dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
531 dq->dq_dqb.dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
532 dq->dq_dqb.dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
535 if (scan_data->update_usage) {
536 dq->dq_dqb.dqb_curspace = dquot->dq_dqb.dqb_curspace;
537 dq->dq_dqb.dqb_curinodes = dquot->dq_dqb.dqb_curinodes;
544 * Read all dquots from quota file into memory
546 static errcode_t quota_read_all_dquots(struct quota_handle *qh,
547 quota_ctx_t qctx, int update_limits)
549 struct scan_dquots_data scan_data;
551 scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
552 scan_data.update_limits = update_limits;
553 scan_data.update_usage = 0;
555 return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
559 * Write all memory dquots into quota file
561 #if 0 /* currently unused, but may be useful in the future? */
562 static errcode_t quota_write_all_dquots(struct quota_handle *qh,
567 err = ext2fs_read_bitmaps(qctx->fs);
570 write_dquots(qctx->quota_dict[qh->qh_type], qh);
571 ext2fs_mark_bb_dirty(qctx->fs);
572 qctx->fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
573 ext2fs_write_bitmaps(qctx->fs);
579 * Updates the in-memory quota limits from the given quota inode.
581 errcode_t quota_update_limits(quota_ctx_t qctx, ext2_ino_t qf_ino,
582 enum quota_type qtype)
584 struct quota_handle *qh;
590 err = ext2fs_get_mem(sizeof(struct quota_handle), &qh);
592 log_debug("Unable to allocate quota handle");
596 err = quota_file_open(qctx, qh, qf_ino, qtype, -1, 0);
598 log_debug("Open quota file failed");
602 quota_read_all_dquots(qh, qctx, 1);
604 err = quota_file_close(qctx, qh);
606 log_debug("Cannot finish IO on new quotafile: %s",
608 if (qh->qh_qf.e2_file)
609 ext2fs_file_close(qh->qh_qf.e2_file);
612 ext2fs_free_mem(&qh);
617 * Compares the measured quota in qctx->quota_dict with that in the quota inode
618 * on disk and updates the limits in qctx->quota_dict. 'usage_inconsistent' is
619 * set to 1 if the supplied and on-disk quota usage values are not identical.
621 errcode_t quota_compare_and_update(quota_ctx_t qctx, enum quota_type qtype,
622 int *usage_inconsistent)
624 struct quota_handle qh;
625 struct scan_dquots_data scan_data;
628 dict_t *dict = qctx->quota_dict[qtype];
634 err = quota_file_open(qctx, &qh, 0, qtype, -1, 0);
636 log_debug("Open quota file failed");
640 scan_data.quota_dict = qctx->quota_dict[qtype];
641 scan_data.update_limits = 1;
642 scan_data.update_usage = 0;
643 scan_data.usage_is_inconsistent = 0;
644 err = qh.qh_ops->scan_dquots(&qh, scan_dquots_callback, &scan_data);
646 log_debug("Error scanning dquots");
650 for (n = dict_first(dict); n; n = dict_next(dict, n)) {
654 if ((dq->dq_flags & DQF_SEEN) == 0) {
655 fprintf(stderr, "[QUOTA WARNING] "
656 "Missing quota entry ID %d\n", dq->dq_id);
657 scan_data.usage_is_inconsistent = 1;
660 *usage_inconsistent = scan_data.usage_is_inconsistent;
663 err = quota_file_close(qctx, &qh);
665 log_debug("Cannot close quotafile: %s", error_message(errno));
666 if (qh.qh_qf.e2_file)
667 ext2fs_file_close(qh.qh_qf.e2_file);
673 int parse_quota_opts(const char *opts, int (*func)(char *))
675 char *buf, *token, *next, *p;
680 buf = malloc(len + 1);
683 "Couldn't allocate memory to parse quota options!\n");
687 for (token = buf; token && *token; token = next) {
688 p = strchr(token, ',');