lib/support/mkquota.c

   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
  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
  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
  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  */
  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  */
  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
 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
 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
 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
 237 static int dict_uint_cmp(const void *a, const void *b)
 238 {
 239         unsigned int    c, d;
 240
 241         c = VOIDPTR_TO_UINT(a);
 242         d = VOIDPTR_TO_UINT(b);
 243
 244         if (c == d)
 245                 return 0;
 246         else if (c > d)
 247                 return 1;
 248         else
 249                 return -1;
 250 }
 251
 252 static inline int project_quota_valid(quota_ctx_t qctx)
 253 {
 254         return (EXT2_INODE_SIZE(qctx->fs->super) > EXT2_GOOD_OLD_INODE_SIZE);
 255 }
 256
 257 static inline qid_t get_qid(struct ext2_inode_large *inode, enum quota_type qtype)
 258 {
 259         unsigned int inode_size;
 260
 261         switch (qtype) {
 262         case USRQUOTA:
 263                 return inode_uid(*inode);
 264         case GRPQUOTA:
 265                 return inode_gid(*inode);
 266         case PRJQUOTA:
 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);
 271                 return 0;
 272         default:
 273                 return 0;
 274         }
 275
 276         return 0;
 277 }
 278
 279 static void quota_dnode_free(dnode_t *node,
 280                              void *context EXT2FS_ATTR((unused)))
 281 {
 282         void *ptr = node ? dnode_get(node) : 0;
 283
 284         ext2fs_free_mem(&ptr);
 285         free(node);
 286 }
 287
 288 /*
 289  * Set up the quota tracking data structures.
 290  */
 291 errcode_t quota_init_context(quota_ctx_t *qctx, ext2_filsys fs,
 292                              unsigned int qtype_bits)
 293 {
 294         errcode_t err;
 295         dict_t  *dict;
 296         quota_ctx_t ctx;
 297         enum quota_type qtype;
 298
 299         err = ext2fs_get_mem(sizeof(struct quota_ctx), &ctx);
 300         if (err) {
 301                 log_debug("Failed to allocate quota context");
 302                 return err;
 303         }
 304
 305         memset(ctx, 0, sizeof(struct quota_ctx));
 306         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 307                 ctx->quota_file[qtype] = NULL;
 308                 if (qtype_bits) {
 309                         if (((1 << qtype) & qtype_bits) == 0)
 310                                 continue;
 311                 } else {
 312                         if (*quota_sb_inump(fs->super, qtype) == 0)
 313                                 continue;
 314                 }
 315                 err = ext2fs_get_mem(sizeof(dict_t), &dict);
 316                 if (err) {
 317                         log_debug("Failed to allocate dictionary");
 318                         quota_release_context(&ctx);
 319                         return err;
 320                 }
 321                 ctx->quota_dict[qtype] = dict;
 322                 dict_init(dict, DICTCOUNT_T_MAX, dict_uint_cmp);
 323                 dict_set_allocator(dict, NULL, quota_dnode_free, NULL);
 324         }
 325
 326         ctx->fs = fs;
 327         *qctx = ctx;
 328         return 0;
 329 }
 330
 331 void quota_release_context(quota_ctx_t *qctx)
 332 {
 333         errcode_t err;
 334         dict_t  *dict;
 335         enum quota_type qtype;
 336         quota_ctx_t ctx;
 337
 338         if (!qctx)
 339                 return;
 340
 341         ctx = *qctx;
 342         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 343                 dict = ctx->quota_dict[qtype];
 344                 ctx->quota_dict[qtype] = 0;
 345                 if (dict) {
 346                         dict_free_nodes(dict);
 347                         free(dict);
 348                 }
 349                 if (ctx->quota_file[qtype]) {
 350                         err = quota_file_close(ctx, ctx->quota_file[qtype]);
 351                         if (err) {
 352                                 log_err("Cannot close quotafile: %s",
 353                                         strerror(errno));
 354                                 ext2fs_free_mem(&ctx->quota_file[qtype]);
 355                         }
 356                 }
 357         }
 358         *qctx = NULL;
 359         free(ctx);
 360 }
 361
 362 static struct dquot *get_dq(dict_t *dict, __u32 key)
 363 {
 364         struct dquot    *dq;
 365         dnode_t         *n;
 366
 367         n = dict_lookup(dict, UINT_TO_VOIDPTR(key));
 368         if (n)
 369                 dq = dnode_get(n);
 370         else {
 371                 if (ext2fs_get_mem(sizeof(struct dquot), &dq)) {
 372                         log_err("Unable to allocate dquot");
 373                         return NULL;
 374                 }
 375                 memset(dq, 0, sizeof(struct dquot));
 376                 dict_alloc_insert(dict, UINT_TO_VOIDPTR(key), dq);
 377                 dq->dq_id = key;
 378         }
 379         return dq;
 380 }
 381
 382
 383 /*
 384  * Called to update the blocks used by a particular inode
 385  */
 386 void quota_data_add(quota_ctx_t qctx, struct ext2_inode_large *inode,
 387                     ext2_ino_t ino EXT2FS_ATTR((unused)),
 388                     qsize_t space)
 389 {
 390         struct dquot    *dq;
 391         dict_t          *dict;
 392         enum quota_type qtype;
 393
 394         if (!qctx)
 395                 return;
 396
 397         log_debug("ADD_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
 398                         inode_uid(*inode),
 399                         inode_gid(*inode), space);
 400         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 401                 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
 402                         continue;
 403                 dict = qctx->quota_dict[qtype];
 404                 if (dict) {
 405                         dq = get_dq(dict, get_qid(inode, qtype));
 406                         if (dq)
 407                                 dq->dq_dqb.dqb_curspace += space;
 408                 }
 409         }
 410 }
 411
 412 /*
 413  * Called to remove some blocks used by a particular inode
 414  */
 415 void quota_data_sub(quota_ctx_t qctx, struct ext2_inode_large *inode,
 416                     ext2_ino_t ino EXT2FS_ATTR((unused)),
 417                     qsize_t space)
 418 {
 419         struct dquot    *dq;
 420         dict_t          *dict;
 421         enum quota_type qtype;
 422
 423         if (!qctx)
 424                 return;
 425
 426         log_debug("SUB_DATA: Inode: %u, UID/GID: %u/%u, space: %ld", ino,
 427                         inode_uid(*inode),
 428                         inode_gid(*inode), space);
 429         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 430                 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
 431                         continue;
 432                 dict = qctx->quota_dict[qtype];
 433                 if (dict) {
 434                         dq = get_dq(dict, get_qid(inode, qtype));
 435                         dq->dq_dqb.dqb_curspace -= space;
 436                 }
 437         }
 438 }
 439
 440 /*
 441  * Called to count the files used by an inode's user/group
 442  */
 443 void quota_data_inodes(quota_ctx_t qctx, struct ext2_inode_large *inode,
 444                        ext2_ino_t ino EXT2FS_ATTR((unused)), int adjust)
 445 {
 446         struct dquot    *dq;
 447         dict_t          *dict;
 448         enum quota_type qtype;
 449
 450         if (!qctx)
 451                 return;
 452
 453         log_debug("ADJ_INODE: Inode: %u, UID/GID: %u/%u, adjust: %d", ino,
 454                         inode_uid(*inode),
 455                         inode_gid(*inode), adjust);
 456         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 457                 if (qtype == PRJQUOTA && !project_quota_valid(qctx))
 458                         continue;
 459                 dict = qctx->quota_dict[qtype];
 460                 if (dict) {
 461                         dq = get_dq(dict, get_qid(inode, qtype));
 462                         dq->dq_dqb.dqb_curinodes += adjust;
 463                 }
 464         }
 465 }
 466
 467 errcode_t quota_compute_usage(quota_ctx_t qctx)
 468 {
 469         ext2_filsys fs;
 470         ext2_ino_t ino;
 471         errcode_t ret;
 472         struct ext2_inode_large *inode;
 473         int inode_size;
 474         qsize_t space;
 475         ext2_inode_scan scan;
 476
 477         if (!qctx)
 478                 return 0;
 479
 480         fs = qctx->fs;
 481         ret = ext2fs_open_inode_scan(fs, 0, &scan);
 482         if (ret) {
 483                 log_err("while opening inode scan. ret=%ld", ret);
 484                 return ret;
 485         }
 486         inode_size = fs->super->s_inode_size;
 487         inode = malloc(inode_size);
 488         if (!inode) {
 489                 ext2fs_close_inode_scan(scan);
 490                 return ENOMEM;
 491         }
 492         while (1) {
 493                 ret = ext2fs_get_next_inode_full(scan, &ino,
 494                                                  EXT2_INODE(inode), inode_size);
 495                 if (ret) {
 496                         log_err("while getting next inode. ret=%ld", ret);
 497                         ext2fs_close_inode_scan(scan);
 498                         free(inode);
 499                         return ret;
 500                 }
 501                 if (ino == 0)
 502                         break;
 503                 if (inode->i_links_count &&
 504                     (ino == EXT2_ROOT_INO ||
 505                      ino >= EXT2_FIRST_INODE(fs->super))) {
 506                         space = ext2fs_inode_i_blocks(fs,
 507                                                       EXT2_INODE(inode)) << 9;
 508                         quota_data_add(qctx, inode, ino, space);
 509                         quota_data_inodes(qctx, inode, ino, +1);
 510                 }
 511         }
 512
 513         ext2fs_close_inode_scan(scan);
 514         free(inode);
 515         return 0;
 516 }
 517
 518 struct scan_dquots_data {
 519         dict_t          *quota_dict;
 520         int             update_limits; /* update limits from disk */
 521         int             update_usage;
 522         int             check_consistency;
 523         int             usage_is_inconsistent;
 524 };
 525
 526 static int scan_dquots_callback(struct dquot *dquot, void *cb_data)
 527 {
 528         struct scan_dquots_data *scan_data = cb_data;
 529         dict_t *quota_dict = scan_data->quota_dict;
 530         struct dquot *dq;
 531
 532         dq = get_dq(quota_dict, dquot->dq_id);
 533         dq->dq_id = dquot->dq_id;
 534         dq->dq_flags |= DQF_SEEN;
 535
 536         print_dquot("mem", dq);
 537         print_dquot("dsk", dquot);
 538
 539         /* Check if there is inconsistency */
 540         if (scan_data->check_consistency &&
 541             (dq->dq_dqb.dqb_curspace != dquot->dq_dqb.dqb_curspace ||
 542              dq->dq_dqb.dqb_curinodes != dquot->dq_dqb.dqb_curinodes)) {
 543                 scan_data->usage_is_inconsistent = 1;
 544                 fprintf(stderr, "[QUOTA WARNING] Usage inconsistent for ID %u:"
 545                         "actual (%lld, %lld) != expected (%lld, %lld)\n",
 546                         dq->dq_id, (long long) dq->dq_dqb.dqb_curspace,
 547                         (long long) dq->dq_dqb.dqb_curinodes,
 548                         (long long) dquot->dq_dqb.dqb_curspace,
 549                         (long long) dquot->dq_dqb.dqb_curinodes);
 550         }
 551
 552         if (scan_data->update_limits) {
 553                 dq->dq_dqb.dqb_ihardlimit = dquot->dq_dqb.dqb_ihardlimit;
 554                 dq->dq_dqb.dqb_isoftlimit = dquot->dq_dqb.dqb_isoftlimit;
 555                 dq->dq_dqb.dqb_bhardlimit = dquot->dq_dqb.dqb_bhardlimit;
 556                 dq->dq_dqb.dqb_bsoftlimit = dquot->dq_dqb.dqb_bsoftlimit;
 557         }
 558
 559         if (scan_data->update_usage) {
 560                 dq->dq_dqb.dqb_curspace = dquot->dq_dqb.dqb_curspace;
 561                 dq->dq_dqb.dqb_curinodes = dquot->dq_dqb.dqb_curinodes;
 562         }
 563
 564         return 0;
 565 }
 566
 567 /*
 568  * Read all dquots from quota file into memory
 569  */
 570 static errcode_t quota_read_all_dquots(struct quota_handle *qh,
 571                                        quota_ctx_t qctx,
 572                                        int update_limits EXT2FS_ATTR((unused)))
 573 {
 574         struct scan_dquots_data scan_data;
 575
 576         scan_data.quota_dict = qctx->quota_dict[qh->qh_type];
 577         scan_data.check_consistency = 0;
 578         scan_data.update_limits = 0;
 579         scan_data.update_usage = 1;
 580
 581         return qh->qh_ops->scan_dquots(qh, scan_dquots_callback, &scan_data);
 582 }
 583
 584 /*
 585  * Write all memory dquots into quota file
 586  */
 587 #if 0 /* currently unused, but may be useful in the future? */
 588 static errcode_t quota_write_all_dquots(struct quota_handle *qh,
 589                                         quota_ctx_t qctx)
 590 {
 591         errcode_t err;
 592
 593         err = ext2fs_read_bitmaps(qctx->fs);
 594         if (err)
 595                 return err;
 596         write_dquots(qctx->quota_dict[qh->qh_type], qh);
 597         ext2fs_mark_bb_dirty(qctx->fs);
 598         qctx->fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 599         ext2fs_write_bitmaps(qctx->fs);
 600         return 0;
 601 }
 602 #endif
 603
 604 /*
 605  * Updates the in-memory quota limits from the given quota inode.
 606  */
 607 errcode_t quota_update_limits(quota_ctx_t qctx, ext2_ino_t qf_ino,
 608                               enum quota_type qtype)
 609 {
 610         struct quota_handle *qh;
 611         errcode_t err;
 612
 613         if (!qctx)
 614                 return 0;
 615
 616         err = ext2fs_get_mem(sizeof(struct quota_handle), &qh);
 617         if (err) {
 618                 log_debug("Unable to allocate quota handle");
 619                 return err;
 620         }
 621
 622         err = quota_file_open(qctx, qh, qf_ino, qtype, -1, 0);
 623         if (err) {
 624                 log_debug("Open quota file failed");
 625                 goto out;
 626         }
 627
 628         quota_read_all_dquots(qh, qctx, 1);
 629
 630         err = quota_file_close(qctx, qh);
 631         if (err) {
 632                 log_debug("Cannot finish IO on new quotafile: %s",
 633                         strerror(errno));
 634                 if (qh->qh_qf.e2_file)
 635                         ext2fs_file_close(qh->qh_qf.e2_file);
 636         }
 637 out:
 638         ext2fs_free_mem(&qh);
 639         return err;
 640 }
 641
 642 /*
 643  * Compares the measured quota in qctx->quota_dict with that in the quota inode
 644  * on disk and updates the limits in qctx->quota_dict. 'usage_inconsistent' is
 645  * set to 1 if the supplied and on-disk quota usage values are not identical.
 646  */
 647 errcode_t quota_compare_and_update(quota_ctx_t qctx, enum quota_type qtype,
 648                                    int *usage_inconsistent)
 649 {
 650         struct quota_handle qh;
 651         struct scan_dquots_data scan_data;
 652         struct dquot *dq;
 653         dnode_t *n;
 654         dict_t *dict = qctx->quota_dict[qtype];
 655         errcode_t err = 0;
 656
 657         if (!dict)
 658                 goto out;
 659
 660         err = quota_file_open(qctx, &qh, 0, qtype, -1, 0);
 661         if (err) {
 662                 log_debug("Open quota file failed");
 663                 goto out;
 664         }
 665
 666         scan_data.quota_dict = qctx->quota_dict[qtype];
 667         scan_data.update_limits = 1;
 668         scan_data.update_usage = 0;
 669         scan_data.check_consistency = 1;
 670         scan_data.usage_is_inconsistent = 0;
 671         err = qh.qh_ops->scan_dquots(&qh, scan_dquots_callback, &scan_data);
 672         if (err) {
 673                 log_debug("Error scanning dquots");
 674                 *usage_inconsistent = 1;
 675                 goto out_close_qh;
 676         }
 677
 678         for (n = dict_first(dict); n; n = dict_next(dict, n)) {
 679                 dq = dnode_get(n);
 680                 if (!dq)
 681                         continue;
 682                 if ((dq->dq_flags & DQF_SEEN) == 0) {
 683                         fprintf(stderr, "[QUOTA WARNING] "
 684                                 "Missing quota entry ID %d\n", dq->dq_id);
 685                         scan_data.usage_is_inconsistent = 1;
 686                 }
 687         }
 688         *usage_inconsistent = scan_data.usage_is_inconsistent;
 689
 690 out_close_qh:
 691         err = quota_file_close(qctx, &qh);
 692         if (err) {
 693                 log_debug("Cannot close quotafile: %s", error_message(errno));
 694                 if (qh.qh_qf.e2_file)
 695                         ext2fs_file_close(qh.qh_qf.e2_file);
 696         }
 697 out:
 698         return err;
 699 }
 700
 701 int parse_quota_opts(const char *opts, int (*func)(char *))
 702 {
 703         char    *buf, *token, *next, *p;
 704         int     len;
 705         int     ret = 0;
 706
 707         len = strlen(opts);
 708         buf = malloc(len + 1);
 709         if (!buf) {
 710                 fprintf(stderr,
 711                         "Couldn't allocate memory to parse quota options!\n");
 712                 return -ENOMEM;
 713         }
 714         strcpy(buf, opts);
 715         for (token = buf; token && *token; token = next) {
 716                 p = strchr(token, ',');
 717                 next = 0;
 718                 if (p) {
 719                         *p = 0;
 720                         next = p + 1;
 721                 }
 722                 ret = func(token);
 723                 if (ret)
 724                         break;
 725         }
 726         free(buf);
 727         return ret;
 728 }