2 * Copyright (C) 2007-2008 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file fsck.c The program used to check an osl table. */
10 #include <sys/types.h>
19 #include "fsck.cmdline.h"
21 /** version text used by various commands if -V switch was given */
22 #define VERSION_TEXT(prefix) "osl_" prefix " " VERSION " " "\n" \
23 "Copyright (C) 2008 Andre Noll\n" \
24 "This is free software with ABSOLUTELY NO WARRANTY." \
25 " See COPYING for details.\n" \
26 "Written by Andre Noll.\n" \
27 "Report bugs to <maan@systemlinux.org>.\n"
29 /** print out \p VERSION_TEXT and exit if version flag was given */
30 #define HANDLE_VERSION_FLAG(_prefix, _args_info_struct) \
31 if (_args_info_struct.version_given) { \
32 printf("%s", VERSION_TEXT(_prefix)); \
36 static struct fsck_args_info conf;
39 FSCK_ERROR(RANGE_VIOLATION, "range violation detected, very bad"), \
40 FSCK_ERROR(NOT_A_REGULAR_FILE, "not a regular file"), \
41 FSCK_ERROR(SYNTAX, "fsck syntax error"), \
42 FSCK_ERROR(ACCESS, "permission denied"), \
43 FSCK_ERROR(CHDIR, "could not change directory"), \
44 FSCK_ERROR(OPENDIR, "could not open directory"),
46 #define FSCK_ERROR_BIT 29
47 #define FSCK_ERROR(num, txt) E_FSCK_ ## num
49 FSCK_DUMMY = (1 << FSCK_ERROR_BIT) - 1,
53 #define FSCK_ERROR(num, txt) txt
54 const char const *fsck_errors[] = {
58 static const char *fsck_strerror(int num)
60 if (num & (1 << FSCK_ERROR_BIT))
61 return fsck_errors[num & ((1 << FSCK_ERROR_BIT) - 1)];
62 return osl_strerror(num);
68 signed char hexval_table[256] = {
69 -1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */
70 -1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */
71 -1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */
72 -1, -1, -1, -1, -1, -1, -1, -1, /* 18-1f */
73 -1, -1, -1, -1, -1, -1, -1, -1, /* 20-27 */
74 -1, -1, -1, -1, -1, -1, -1, -1, /* 28-2f */
75 0, 1, 2, 3, 4, 5, 6, 7, /* 30-37 */
76 8, 9, -1, -1, -1, -1, -1, -1, /* 38-3f */
77 -1, 10, 11, 12, 13, 14, 15, -1, /* 40-47 */
78 -1, -1, -1, -1, -1, -1, -1, -1, /* 48-4f */
79 -1, -1, -1, -1, -1, -1, -1, -1, /* 50-57 */
80 -1, -1, -1, -1, -1, -1, -1, -1, /* 58-5f */
81 -1, 10, 11, 12, 13, 14, 15, -1, /* 60-67 */
82 -1, -1, -1, -1, -1, -1, -1, -1, /* 68-67 */
83 -1, -1, -1, -1, -1, -1, -1, -1, /* 70-77 */
84 -1, -1, -1, -1, -1, -1, -1, -1, /* 78-7f */
85 -1, -1, -1, -1, -1, -1, -1, -1, /* 80-87 */
86 -1, -1, -1, -1, -1, -1, -1, -1, /* 88-8f */
87 -1, -1, -1, -1, -1, -1, -1, -1, /* 90-97 */
88 -1, -1, -1, -1, -1, -1, -1, -1, /* 98-9f */
89 -1, -1, -1, -1, -1, -1, -1, -1, /* a0-a7 */
90 -1, -1, -1, -1, -1, -1, -1, -1, /* a8-af */
91 -1, -1, -1, -1, -1, -1, -1, -1, /* b0-b7 */
92 -1, -1, -1, -1, -1, -1, -1, -1, /* b8-bf */
93 -1, -1, -1, -1, -1, -1, -1, -1, /* c0-c7 */
94 -1, -1, -1, -1, -1, -1, -1, -1, /* c8-cf */
95 -1, -1, -1, -1, -1, -1, -1, -1, /* d0-d7 */
96 -1, -1, -1, -1, -1, -1, -1, -1, /* d8-df */
97 -1, -1, -1, -1, -1, -1, -1, -1, /* e0-e7 */
98 -1, -1, -1, -1, -1, -1, -1, -1, /* e8-ef */
99 -1, -1, -1, -1, -1, -1, -1, -1, /* f0-f7 */
100 -1, -1, -1, -1, -1, -1, -1, -1, /* f8-ff */
103 int asc_to_hash(const char *asc_hash, int len, HASH_TYPE *hash)
106 const unsigned char *asc = (const unsigned char *) asc_hash;
108 while (*asc && i++ < len) {
109 unsigned int val = (hexval_table[asc[0]] << 4) | hexval_table[asc[1]];
119 static int _write_all(int fd, const char *buf, size_t len)
121 return write_all(fd, buf, &len);
125 * Wrapper for malloc().
127 * \param size The desired new size.
129 * A wrapper for malloc(3) which exits on errors.
131 * \return A pointer to the allocated memory, which is suitably aligned for any
136 __must_check __malloc static void *fsck_malloc(size_t size)
139 void *p = malloc(size);
142 EMERG_LOG("malloc failed (size = %zu), aborting\n",
150 * Allocate memory and fill with zeros.
152 * \param size The desired new size.
154 * A wrapper for calloc(3) which exits on errors.
156 * \return A pointer to the allocated and zeroed-out memory, which is suitably
157 * aligned for any kind of variable.
161 __must_check __malloc static void *fsck_calloc(size_t size)
163 void *ret = fsck_malloc(size);
165 memset(ret, 0, size);
170 * Save version of strdup().
172 * \param s The string to be duplicated.
174 * A wrapper for strdup(3). It calls \p exit(EXIT_FAILURE) on errors, i.e.
175 * there is no need to check the return value in the caller.
177 * \return A pointer to the duplicated string. If \p s was the NULL pointer,
178 * an pointer to an empty string is returned.
182 __must_check __malloc static char *fsck_strdup(const char *s)
186 if ((ret = strdup(s? s: "")))
188 EMERG_LOG("strdup failed, aborting\n");
193 * Compare two osl objects pointing to unsigned integers of 32 bit size.
195 * \param obj1 Pointer to the first integer.
196 * \param obj2 Pointer to the second integer.
198 * \return The values required for an osl compare function.
200 * \sa osl_compare_func, osl_hash_compare().
202 static int uint32_compare(const struct osl_object *obj1, const struct osl_object *obj2)
204 uint32_t d1 = read_u32((const char *)obj1->data);
205 uint32_t d2 = read_u32((const char *)obj2->data);
215 * A wrapper for fchdir().
217 * \param fd An open file descriptor.
221 static inline int __fchdir(int fd)
225 return errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_CHDIR;
229 * Wrapper for chdir(2).
231 * \param path The specified directory.
235 _static_inline_ int __chdir(const char *path)
237 if (chdir(path) >= 0)
239 return errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_CHDIR;
243 * Save the cwd and open a given directory.
245 * \param dirname Path to the directory to open.
246 * \param dir Result pointer.
247 * \param cwd File descriptor of the current working directory.
251 * Opening the current directory (".") and calling fchdir() to return is
252 * usually faster and more reliable than saving cwd in some buffer and calling
253 * chdir() afterwards.
255 * If \a cwd is not \p NULL "." is opened and the resulting file descriptor is
256 * stored in \a cwd. If the function returns success, and \a cwd is not \p
257 * NULL, the caller must close this file descriptor (probably after calling
260 * On errors, the function undos everything, so the caller needs neither close
261 * any files, nor change back to the original working directory.
266 static int fsck_opendir(const char *dirname, DIR **dir, int *cwd)
271 ret = osl_open(".", O_RDONLY, 0);
276 ret = __chdir(dirname);
282 ret = errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_OPENDIR;
283 /* Ignore return value of fchdir() and close(). We're busted anyway. */
295 * Traverse the given directory recursively.
297 * \param dirname The directory to traverse.
298 * \param func The function to call for each entry.
299 * \param private_data Pointer to an arbitrary data structure.
301 * For each regular file under \a dirname, the supplied function \a func is
302 * called. The full path of the regular file and the \a private_data pointer
303 * are passed to \a func. Directories for which the calling process has no
304 * permissions to change to are silently ignored.
308 static int for_each_file_in_dir(const char *dirname,
309 int (*func)(const char *, void *), void *private_data)
312 struct dirent *entry;
313 int cwd_fd, ret2, ret = fsck_opendir(dirname, &dir, &cwd_fd);
316 return ret == -E_FSCK_ACCESS? 1 : ret;
317 /* scan cwd recursively */
318 while ((entry = readdir(dir))) {
323 if (!strcmp(entry->d_name, "."))
325 if (!strcmp(entry->d_name, ".."))
327 if (lstat(entry->d_name, &s) == -1)
330 if (!S_ISREG(m) && !S_ISDIR(m))
332 tmp = make_message("%s/%s", dirname, entry->d_name);
334 ret = func(tmp, private_data);
341 ret = for_each_file_in_dir(tmp, func, private_data);
349 ret2 = __fchdir(cwd_fd);
350 if (ret2 < 0 && ret >= 0)
357 * check for object boundary violations
359 * test whether the range pointed to by the index entry for a given cell is
360 * contained in mapped data file. This should always be the case. Otherwise
361 * we are in real trouble.
363 static int check_range(struct osl_table *t, uint32_t row_num, uint32_t col_num)
366 struct osl_object obj;
367 struct osl_column *col;
369 char *map_start, *obj_start;
371 ret = get_cell_index(t, row_num, col_num, &index_entry);
374 ret = get_mapped_object(t, col_num, row_num, &obj);
377 col = t->columns + col_num;
378 obj_start = obj.data;
379 map_start = col->data_map.data;
380 // INFO_LOG("obj: %p..%p\n", obj_start, obj_start + obj.size);
381 // INFO_LOG("map: %p..%p\n", map_start, map_start + col->data_map.size);
382 if (obj_start < map_start || obj_start + obj.size > map_start + col->data_map.size) {
383 CRIT_LOG("range violation in row %u, col %u\n", row_num,
385 return -E_FSCK_RANGE_VIOLATION;
387 DEBUG_LOG("col %u: ok\n", col_num);
392 * check all cells of the given table for boundary violations
394 static int check_index_ranges(struct osl_table *t)
398 INFO_LOG("checking for range violations in index\n");
399 //DEBUG_LOG("%d rows. %d columns\n", t->num_rows, t->desc->num_columns);
400 t->num_invalid_rows = 0;
401 for (i = 0; i < t->num_rows; i++) {
402 if (row_is_invalid(t, i)) {
403 t->num_invalid_rows++;
406 for (j = 0; j < t->desc->num_columns; j++) { /* FXIME */
407 const struct osl_column_description *cd =
408 get_column_description(t->desc, j);
409 if (cd->storage_type != OSL_MAPPED_STORAGE)
411 ret = check_range(t, i, j);
413 if (ret != -E_FSCK_RANGE_VIOLATION)
415 ret = mark_row_invalid(t, i);
418 t->num_invalid_rows++;
424 if (t->num_invalid_rows)
425 NOTICE_LOG("ranges OK. %d invalid row(s) detected\n",
426 t->num_invalid_rows);
428 INFO_LOG("no invalid rows, no range violations, good\n");
434 static int move_index_entry(struct osl_table *t, uint32_t dest, uint32_t src)
436 char *dest_ie, *src_ie;
437 int ret = get_row_index(t, dest, &dest_ie);
441 ret = get_row_index(t, src, &src_ie);
444 INFO_LOG("moving entry #%u to position %u\n", src, dest);
445 memcpy(dest_ie, src_ie, t->row_index_size);
449 static int map_index(const struct osl_table_description *desc, struct osl_object *map)
451 char *filename = index_filename(desc);
454 ret = mmap_full_file(filename, O_RDWR, &map->data, &map->size, NULL);
455 DEBUG_LOG("mapping index %s: ret: %d, size: %zu\n", filename, ret, map->size);
460 static int prune_invalid_rows_from_index(struct osl_table *t)
462 uint32_t top = 0, bottom;
466 if (!t->num_invalid_rows) {
467 INFO_LOG("all rows are valid, good\n");
470 NOTICE_LOG("deleting %u invalid row(s) (%d bytes) from index\n",
471 t->num_invalid_rows, t->row_index_size * t->num_invalid_rows);
472 bottom = t->num_rows - 1;
473 while (top < bottom) {
474 if (!row_is_invalid(t, top)) {
478 while (bottom > top) {
479 if (row_is_invalid(t, bottom)) {
483 /* move bottom index entry to top */
484 move_index_entry(t, top, bottom);
490 DEBUG_LOG("unmapping index\n");
491 osl_munmap(t->index_map.data, t->index_map.size);
492 filename = index_filename(t->desc);
493 ret = truncate_file(filename, t->row_index_size
494 * t->num_invalid_rows);
498 ret = map_index(t->desc, &t->index_map);
501 t->num_rows = table_num_rows(t);
505 static int check_for_invalid_objects(struct osl_table *t, uint32_t **lost_bytes)
508 const struct osl_column_description *cd;
509 uint32_t *loss = fsck_malloc(sizeof(uint32_t) * t->desc->num_columns);
511 INFO_LOG("looking for mapped objects not contained in index\n");
512 /* first count used bytes */
513 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
514 loss[i] = t->columns[i].data_map.size;
515 for (j = 0; j < t->num_rows; j++) {
516 struct osl_object obj;
517 ret = get_mapped_object(t, i, j, &obj);
524 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
526 NOTICE_LOG("column %u contains %u lost bytes\n",
532 INFO_LOG("all mapped objects are valid, good\n");
540 /* prune_invalid_rows() must be run on the table before calling this */
541 static int prune_mapped_column(struct osl_table *t, uint32_t col_num, int fd)
544 uint32_t written = 0;
545 struct osl_column *col = t->columns + col_num;
547 INFO_LOG("pruning col %u\n", col_num);
548 for (i = 0; i < t->num_rows; i++) {
549 struct osl_object obj;
552 DEBUG_LOG("checking row %u/%u\n", i, t->num_rows);
553 ret = get_mapped_object(t, col_num, i, &obj);
556 ret = _write_all(fd, (char *)(obj.data), obj.size);
560 ret = get_row_index(t, i, &index_entry);
563 update_cell_index(index_entry, col, written, obj.size);
568 static int prune_objects(struct osl_table *t, uint32_t *lost_bytes)
571 const struct osl_column_description *cd;
572 char **col_filenames = fsck_calloc(t->desc->num_columns * sizeof(char *));
573 char **new_col_filenames = fsck_calloc(t->desc->num_columns * sizeof(char *));
574 char *idx_filename = index_filename(t->desc);
575 char *old_idx_filename = make_message("%s.bak", idx_filename);
578 NOTICE_LOG("removing unreferenced objects from data files\n");
579 /* first make a copy of the index */
580 DEBUG_LOG("opening %s\n", old_idx_filename);
581 ret = osl_open(old_idx_filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
585 ret = _write_all(fd, t->index_map.data, t->index_map.size);
589 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
592 col_filenames[i] = column_filename(t, i);
593 new_col_filenames[i] = make_message("%s.fsck", col_filenames[i]);
594 ret = osl_open(new_col_filenames[i], O_WRONLY | O_CREAT | O_EXCL, 0644);
596 goto out_unlink_data;
598 ret = prune_mapped_column(t, i, fd);
601 goto out_unlink_data;
603 ret = unmap_table(t, OSL_MARK_CLEAN);
605 goto out_unlink_data;
606 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
609 ret = osl_rename(new_col_filenames[i], col_filenames[i]);
610 if (ret < 0) { /* we're kinda screwed here */
611 CRIT_LOG("rename of col %i failed: %s\n", i,
612 osl_strerror(errno));
616 unlink(old_idx_filename);
617 ret = map_table(t, 0);
620 FOR_EACH_MAPPED_COLUMN(i, t, cd)
621 unlink(new_col_filenames[i]);
623 free(old_idx_filename);
625 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
626 free(col_filenames[i]);
627 free(new_col_filenames[i]);
630 free(new_col_filenames);
634 static struct osl_column_description hash_tree_table_cols[] = {
636 .storage_type = OSL_NO_STORAGE,
637 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
639 .compare_function = uint32_compare,
640 .data_size = HASH_SIZE
644 static const struct osl_table_description hash_tree_table_desc = {
645 .dir = "/", /* irrelevant */
649 .column_descriptions = hash_tree_table_cols
653 * The hash_tree table contains all hashes of the disk storage name column.
654 * of each row. It is used for checking if a disk storage file has a reference
657 static struct osl_table *hash_tree_table;
658 static HASH_TYPE *hashes;
660 static int check_disk_storage_column(struct osl_table *t, int row_num,
661 int col_num, char *ds_name, unsigned *num_missing_objects)
665 char *path = disk_storage_path(t, col_num, ds_name);
666 unsigned dsnc = t->disk_storage_name_column;
667 struct osl_object obj;
669 DEBUG_LOG("checking if %s is a regular file\n", path);
670 ret = stat(path, &statbuf);
671 if (ret < 0 && errno == ENOENT) {
673 (*num_missing_objects)++;
674 ERROR_LOG("row %d: object %s is missing\n", row_num, path);
675 NOTICE_LOG("trying to delete row %d\n", row_num);
676 ret = osl_get_row(t, dsnc, &obj, &row);
678 CRIT_LOG("unable to get row %d\n", row_num);
679 mark_row_invalid(t, row_num);
680 CRIT_LOG("Please re-run fsck\n");
683 ret = osl_del_row(t, row);
691 ret = -E_FSCK_NOT_A_REGULAR_FILE;
692 if (!(S_IFREG & statbuf.st_mode))
697 static int check_disk_storage_presence(struct osl_table *t)
700 struct osl_object obj, hash_obj = {.size = HASH_SIZE};
702 const struct osl_column_description *cd;
703 unsigned dsnc = t->disk_storage_name_column, missing_objects = 0;
707 hashes = fsck_malloc(t->num_rows * HASH_SIZE);
708 INFO_LOG("looking for missing disk storage objects\n");
709 for (i = 0; i < t->num_rows; i++) {
710 if (row_is_invalid(t, i))
712 ret = get_mapped_object(t, dsnc, i, &obj);
715 hash_object(&obj, hashes + i * HASH_SIZE);
716 hash_obj.data = hashes + i * HASH_SIZE;
717 osl_add_row(hash_tree_table, &hash_obj);
718 ds_name = disk_storage_name_of_hash(t, hashes + i * HASH_SIZE);
719 FOR_EACH_DISK_STORAGE_COLUMN(j, t, cd) {
720 ret = check_disk_storage_column(t, i, j, ds_name,
727 if (!missing_objects)
728 INFO_LOG("all referenced disk storage objects exist, good\n");
730 NOTICE_LOG("%d missing object(s)\n", missing_objects);
731 return missing_objects;
737 static int dummy_compare(const struct osl_object *obj1, const struct osl_object *obj2)
746 static unsigned files_pruned;
748 int prune_disk_storage_file(const char *path, void *private_data)
750 HASH_TYPE hash[HASH_SIZE];
751 uint8_t flags = *(uint8_t *)private_data;
752 struct osl_object obj = {.data = hash, .size = HASH_SIZE};
755 size_t len = strlen(path);
758 DEBUG_LOG("path: %s\n", path);
759 if (flags & OSL_LARGE_TABLE) {
760 if (len < HASH_SIZE * 2 + 2)
762 // NOTICE_LOG("p: %s\n", path + len - 2 * HASH_SIZE - 1);
763 ret = asc_to_hash(path + len - 2 * HASH_SIZE - 1, 1, hash);
766 ret = asc_to_hash(path + len - 2 * HASH_SIZE + 2, HASH_SIZE - 1,
770 // INFO_LOG("high: %x, low: %x, hash: %x\n", high, low, hash);
772 if (len < 2 * HASH_SIZE + 1)
774 ret = asc_to_hash(path + len - 2 * HASH_SIZE, 2 * HASH_SIZE, hash);
777 // INFO_LOG("hash: %x\n", hash);
781 char asc[2 * HASH_SIZE + 1];
782 hash_to_asc(hash, asc);
783 NOTICE_LOG("before: %s\nafter: %s\n", path, asc);
786 ret = osl_get_row(hash_tree_table, 0, &obj, &row);
789 NOTICE_LOG("unreferenced file in hash dir: %s\n", path);
792 ERROR_LOG("could not read hash value of %s\n", path);
794 NOTICE_LOG("removing %s\n", path);
800 static int prune_disk_storage_files(struct osl_table *t)
803 const struct osl_column_description *cd;
805 INFO_LOG("looking for unreferenced disk storage files\n");
806 FOR_EACH_DISK_STORAGE_COLUMN(i, t, cd) {
807 char *dirname = column_filename(t, i);
808 uint8_t flags = t->desc->flags;
809 ret = for_each_file_in_dir(dirname, prune_disk_storage_file,
814 NOTICE_LOG("%u disk storage files deleted\n",
817 INFO_LOG("all files are are referenced, good\n");
821 static int check_disk_storage_columns(struct osl_table *t)
824 const struct osl_column_description *cd;
826 if (!t->num_disk_storage_columns) {
827 INFO_LOG("no disk storage columns in table '%s', "
828 "skipping checks\n", t->desc->name);
831 FOR_EACH_COLUMN(i, t->desc, cd)
832 t->desc->column_descriptions[i].compare_function = dummy_compare;
833 ret = init_rbtrees(t);
836 INFO_LOG("creating rbtree for disk storage hash values\n");
837 ret = osl_open_table(&hash_tree_table_desc, &hash_tree_table);
840 ret = check_disk_storage_presence(t);
842 goto out_close_hash_tree;
843 ret = prune_disk_storage_files(t);
845 osl_close_table(hash_tree_table, 0);
849 clear_rbtrees(t); /* TODO why are we doing that here? Seems odd */
853 static void set_dummy_contents(struct osl_table_description *desc)
856 struct osl_column_description *cd;
858 for (i = 0; i < desc->num_columns; i++) {
859 cd = get_column_description(desc, i);
860 cd->compare_function = dummy_compare;
864 static int fsck_init(struct osl_table_description *desc, struct osl_table **t)
866 struct osl_object map;
867 int ret = map_index(desc, &map);
871 ret = read_table_desc(&map, desc);
873 osl_munmap(map.data, map.size);
876 set_dummy_contents(desc);
877 ret = init_table_structure(desc, t);
879 osl_munmap(map.data, map.size);
882 DEBUG_LOG("unmapping index\n");
883 osl_munmap(map.data, map.size);
884 if (conf.force_given)
885 ret = map_table(*t, (MAP_TBL_FL_IGNORE_DIRTY));
887 ret = map_table(*t, 0);
889 (*t)->num_rows = table_num_rows(*t);
894 static void fsck_cleanup(struct osl_table *t)
900 if (t->desc->column_descriptions) {
901 struct osl_column_description *cd;
902 for (i = 0; i < t->desc->num_columns; i++) {
903 cd = get_column_description(t->desc, i);
904 free((char*)cd->name);
906 free(t->desc->column_descriptions);
913 #define ST_CASE(st) case st: return #st
915 const char *get_asc_storage_type(enum osl_storage_type st)
918 ST_CASE(OSL_MAPPED_STORAGE);
919 ST_CASE(OSL_DISK_STORAGE);
920 ST_CASE(OSL_NO_STORAGE);
925 #define APPEND_ASC_SF(sf, flag, str) do { if (sf & flag) { \
926 if (str) str = make_message("%s%s", str, " | " # flag); \
927 else str = fsck_strdup(#flag); }} while (0)
930 char *get_asc_storage_flags(enum osl_storage_type sf)
934 APPEND_ASC_SF(sf, OSL_RBTREE, asc_sf);
935 APPEND_ASC_SF(sf, OSL_FIXED_SIZE, asc_sf);
936 APPEND_ASC_SF(sf, OSL_UNIQUE, asc_sf);
940 static int dump_table_desc(struct osl_table *t, int fd)
942 const struct osl_table_description *desc = t->desc;
944 struct osl_column_description *cd;
945 char *msg = make_message("static struct osl_column_description cols[] = {\n");
946 ret = _write_all(fd, msg, strlen(msg));
950 FOR_EACH_COLUMN(i, desc, cd) {
952 msg = make_message("\t[%d] = {\n", i);
953 ret = _write_all(fd, msg, strlen(msg));
957 asc_st = get_asc_storage_type(cd->storage_type);
958 msg = make_message("\t\t.storage_type = %s,\n", asc_st);
959 ret = _write_all(fd, msg, strlen(msg));
963 if (cd->storage_flags) {
964 char *asc_sf = get_asc_storage_flags(cd->storage_flags);
965 msg = make_message("\t\t,storage_flags = %s,\n", asc_sf);
967 ret = _write_all(fd, msg, strlen(msg));
972 if (cd->storage_flags & OSL_FIXED_SIZE) {
973 msg = make_message("\t\t.data_size = %u,\n", cd->data_size);
974 ret = _write_all(fd, msg, strlen(msg));
979 msg = make_message("\t\t.name = \"%s\",\n", cd->name);
980 ret = _write_all(fd, msg, strlen(msg));
984 if (cd->storage_flags & OSL_RBTREE) {
985 msg = make_message("\t\t.compare_function = compare_func,\n");
986 ret = _write_all(fd, msg, strlen(msg));
991 msg = make_message("\t},\n");
992 ret = _write_all(fd, msg, strlen(msg));
997 msg = make_message("};\n");
998 ret = _write_all(fd, msg, strlen(msg));
1005 static int dump_row(struct osl_table *t, unsigned row_num, const char *row_dir)
1008 const struct osl_column_description *cd;
1010 struct osl_object obj;
1012 HASH_TYPE hash[HASH_SIZE];
1015 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
1016 ret = get_mapped_object(t, i, row_num, &obj);
1019 filename = make_message("%s/col_%03u", row_dir, i);
1020 ret = write_file(filename, obj.data, obj.size);
1025 if (!t->num_disk_storage_columns)
1027 dsnc = t->disk_storage_name_column;
1028 ret = get_mapped_object(t, dsnc, row_num, &obj);
1031 hash_object(&obj, hash);
1032 ds_name = disk_storage_name_of_hash(t, hash);
1033 FOR_EACH_DISK_STORAGE_COLUMN(i, t, cd) {
1034 filename = disk_storage_path(t, i, ds_name);
1035 ret = mmap_full_file(filename, O_RDONLY, &obj.data, &obj.size, NULL);
1039 filename = make_message("%s/col_%03u", row_dir, i);
1040 ret = write_file(filename, obj.data, obj.size);
1051 static int dump_rows(char *dump_dir, struct osl_table *t)
1054 char *current_dir = NULL;
1057 for (i = 0; i < t->num_rows; i++) {
1059 if (row_is_invalid(t, i))
1063 current_dir = make_message("%s/rows_%u-%u", dump_dir, i, i + 999);
1064 NOTICE_LOG("dumping rows %u - %u\n", i, i + 999);
1065 ret = osl_mkdir(current_dir, 0777);
1066 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1069 row_dir = make_message("%s/row_%03u", current_dir, i);
1070 ret = osl_mkdir(row_dir, 0777);
1071 if (ret < 0 && ret != -E_OSL_DIR_EXISTS) {
1075 ret = dump_row(t, i, row_dir);
1085 static int dump_table(char *dump_dir, struct osl_table_description *desc)
1087 struct osl_table *t = NULL;
1088 int fd, ret = fsck_init(desc, &t);
1090 char *table_dump_dir = NULL;
1094 ret = osl_mkdir(dump_dir, 0777);
1095 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1097 table_dump_dir = make_message("%s/%s", dump_dir, desc->name);
1098 ret = osl_mkdir(table_dump_dir, 0777);
1099 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1101 desc_file = make_message("%s/table_description.c", table_dump_dir);
1102 ret = osl_open(desc_file, O_WRONLY | O_CREAT | O_EXCL, 0644);
1107 ret = dump_table_desc(t, fd);
1111 ret = dump_rows(table_dump_dir, t);
1113 free(table_dump_dir);
1118 static int fsck(struct osl_table_description *desc)
1121 struct osl_table *t = NULL;
1122 uint32_t *lost_bytes = NULL;
1124 ret = fsck_init(desc, &t);
1127 ret = check_index_ranges(t);
1130 ret = check_disk_storage_columns(t);
1133 ret = prune_invalid_rows_from_index(t);
1136 ret = check_for_invalid_objects(t, &lost_bytes);
1139 if (ret > 0) { /* at least one mapped data file needs pruning */
1140 ret = prune_objects(t, lost_bytes);
1146 unmap_table(t, OSL_MARK_CLEAN);
1152 static int check_table(char *db_dir, char *table_name)
1154 struct osl_table_description desc = {
1155 .column_descriptions = NULL,
1161 INFO_LOG("checking table %s\n", table_name);
1162 if (!conf.no_fsck_given) {
1168 if (!conf.dump_dir_given || !*conf.dump_dir_arg)
1170 ret = dump_table(conf.dump_dir_arg, &desc);
1173 ERROR_LOG("failed to check table %s: %s\n", table_name,
1174 fsck_strerror(-ret));
1176 NOTICE_LOG("successfully checked table %s\n", table_name);
1180 static int check_all_tables(char *db_dir)
1183 struct dirent *entry;
1184 int cwd_fd, ret2, ret = fsck_opendir(db_dir, &dir, &cwd_fd);
1188 while ((entry = readdir(dir))) {
1191 if (!strcmp(entry->d_name, "."))
1193 if (!strcmp(entry->d_name, ".."))
1195 if (lstat(entry->d_name, &s) == -1)
1200 ret = check_table(db_dir, entry->d_name);
1205 ret2 = __fchdir(cwd_fd);
1206 if (ret2 < 0 && ret >= 0)
1212 int main(int argc, char **argv)
1215 struct fsck_cmdline_parser_params params = {
1218 .check_required = 1,
1219 .check_ambiguity = 1,
1222 ret = fsck_cmdline_parser_ext(argc, argv, &conf, ¶ms);
1225 ret = -E_FSCK_SYNTAX;
1228 loglevel = conf.loglevel_arg;
1229 HANDLE_VERSION_FLAG("fsck", conf);
1230 INFO_LOG("database dir: %s\n", conf.database_dir_arg);
1231 if (!conf.inputs_num) {
1232 ret = check_all_tables(conf.database_dir_arg);
1235 for (i = 0; i < conf.inputs_num; i++) {
1236 ret = check_table(conf.database_dir_arg, conf.inputs[i]);
1242 ERROR_LOG("%s\n", fsck_strerror(-ret));
1243 if (conf.loglevel_arg > 1)
1244 EMERG_LOG("re-run with \"--loglevel %d\" to increase verbosity\n",
1245 conf.loglevel_arg - 1);
1247 NOTICE_LOG("success\n");
1248 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;