2 * Copyright (C) 2007-2009 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 #define VERSION_TEXT(prefix) "osl" prefix " " VERSION " " "\n" \
22 "Copyright (C) 2008-2009 Andre Noll\n" \
23 "This is free software with ABSOLUTELY NO WARRANTY." \
24 " See COPYING for details.\n" \
25 "Written by Andre Noll.\n" \
26 "Report bugs to <maan@systemlinux.org>.\n"
28 /** print out \p VERSION_TEXT and exit if version flag was given */
29 #define HANDLE_VERSION_FLAG(_prefix, _args_info_struct) \
30 if (_args_info_struct.version_given) { \
31 printf("%s", VERSION_TEXT(_prefix)); \
35 static struct fsck_args_info conf;
38 FSCK_ERROR(RANGE_VIOLATION, "range violation detected, very bad"), \
39 FSCK_ERROR(NOT_A_REGULAR_FILE, "not a regular file"), \
40 FSCK_ERROR(SYNTAX, "fsck syntax error"), \
41 FSCK_ERROR(ACCESS, "permission denied"), \
42 FSCK_ERROR(CHDIR, "could not change directory"), \
43 FSCK_ERROR(OPENDIR, "could not open directory"),
45 #define FSCK_ERROR_BIT 29
46 #define FSCK_ERROR(num, txt) E_FSCK_ ## num
48 FSCK_DUMMY = (1 << FSCK_ERROR_BIT) - 1,
52 #define FSCK_ERROR(num, txt) txt
53 static const char *fsck_errors[] = {
57 static const char *fsck_strerror(int num)
59 if (num & (1 << FSCK_ERROR_BIT))
60 return fsck_errors[num & ((1 << FSCK_ERROR_BIT) - 1)];
61 return osl_strerror(num);
67 static signed char hexval_table[256] = {
68 -1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */
69 -1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */
70 -1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */
71 -1, -1, -1, -1, -1, -1, -1, -1, /* 18-1f */
72 -1, -1, -1, -1, -1, -1, -1, -1, /* 20-27 */
73 -1, -1, -1, -1, -1, -1, -1, -1, /* 28-2f */
74 0, 1, 2, 3, 4, 5, 6, 7, /* 30-37 */
75 8, 9, -1, -1, -1, -1, -1, -1, /* 38-3f */
76 -1, 10, 11, 12, 13, 14, 15, -1, /* 40-47 */
77 -1, -1, -1, -1, -1, -1, -1, -1, /* 48-4f */
78 -1, -1, -1, -1, -1, -1, -1, -1, /* 50-57 */
79 -1, -1, -1, -1, -1, -1, -1, -1, /* 58-5f */
80 -1, 10, 11, 12, 13, 14, 15, -1, /* 60-67 */
81 -1, -1, -1, -1, -1, -1, -1, -1, /* 68-67 */
82 -1, -1, -1, -1, -1, -1, -1, -1, /* 70-77 */
83 -1, -1, -1, -1, -1, -1, -1, -1, /* 78-7f */
84 -1, -1, -1, -1, -1, -1, -1, -1, /* 80-87 */
85 -1, -1, -1, -1, -1, -1, -1, -1, /* 88-8f */
86 -1, -1, -1, -1, -1, -1, -1, -1, /* 90-97 */
87 -1, -1, -1, -1, -1, -1, -1, -1, /* 98-9f */
88 -1, -1, -1, -1, -1, -1, -1, -1, /* a0-a7 */
89 -1, -1, -1, -1, -1, -1, -1, -1, /* a8-af */
90 -1, -1, -1, -1, -1, -1, -1, -1, /* b0-b7 */
91 -1, -1, -1, -1, -1, -1, -1, -1, /* b8-bf */
92 -1, -1, -1, -1, -1, -1, -1, -1, /* c0-c7 */
93 -1, -1, -1, -1, -1, -1, -1, -1, /* c8-cf */
94 -1, -1, -1, -1, -1, -1, -1, -1, /* d0-d7 */
95 -1, -1, -1, -1, -1, -1, -1, -1, /* d8-df */
96 -1, -1, -1, -1, -1, -1, -1, -1, /* e0-e7 */
97 -1, -1, -1, -1, -1, -1, -1, -1, /* e8-ef */
98 -1, -1, -1, -1, -1, -1, -1, -1, /* f0-f7 */
99 -1, -1, -1, -1, -1, -1, -1, -1, /* f8-ff */
102 static int asc_to_hash(const char *asc_hash, int len, HASH_TYPE *hash)
105 const unsigned char *asc = (const unsigned char *) asc_hash;
107 while (*asc && i++ < len) {
108 unsigned int val = (hexval_table[asc[0]] << 4) | hexval_table[asc[1]];
118 static int _write_all(int fd, const char *buf, size_t len)
120 return write_all(fd, buf, &len);
124 * Wrapper for malloc().
126 * \param size The desired new size.
128 * A wrapper for malloc(3) which exits on errors.
130 * \return A pointer to the allocated memory, which is suitably aligned for any
135 __must_check __malloc static void *fsck_malloc(size_t size)
138 void *p = malloc(size);
141 EMERG_LOG("malloc failed (size = %zu), aborting\n",
149 * Allocate memory and fill with zeros.
151 * \param size The desired new size.
153 * A wrapper for calloc(3) which exits on errors.
155 * \return A pointer to the allocated and zeroed-out memory, which is suitably
156 * aligned for any kind of variable.
160 __must_check __malloc static void *fsck_calloc(size_t size)
162 void *ret = fsck_malloc(size);
164 memset(ret, 0, size);
169 * Save version of strdup().
171 * \param s The string to be duplicated.
173 * A wrapper for strdup(3). It calls \p exit(EXIT_FAILURE) on errors, i.e.
174 * there is no need to check the return value in the caller.
176 * \return A pointer to the duplicated string. If \p s was the NULL pointer,
177 * an pointer to an empty string is returned.
181 __must_check __malloc static char *fsck_strdup(const char *s)
185 if ((ret = strdup(s? s: "")))
187 EMERG_LOG("strdup failed, aborting\n");
192 * Compare two osl objects pointing to unsigned integers of 32 bit size.
194 * \param obj1 Pointer to the first integer.
195 * \param obj2 Pointer to the second integer.
197 * \return The values required for an osl compare function.
199 * \sa osl_compare_func, osl_hash_compare().
201 static int uint32_compare(const struct osl_object *obj1, const struct osl_object *obj2)
203 uint32_t d1 = read_u32((const char *)obj1->data);
204 uint32_t d2 = read_u32((const char *)obj2->data);
214 * A wrapper for fchdir().
216 * \param fd An open file descriptor.
220 static inline int __fchdir(int fd)
224 return errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_CHDIR;
228 * Wrapper for chdir(2).
230 * \param path The specified directory.
234 _static_inline_ int __chdir(const char *path)
236 if (chdir(path) >= 0)
238 return errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_CHDIR;
242 * Save the cwd and open a given directory.
244 * \param dirname Path to the directory to open.
245 * \param dir Result pointer.
246 * \param cwd File descriptor of the current working directory.
250 * Opening the current directory (".") and calling fchdir() to return is
251 * usually faster and more reliable than saving cwd in some buffer and calling
252 * chdir() afterwards.
254 * If \a cwd is not \p NULL "." is opened and the resulting file descriptor is
255 * stored in \a cwd. If the function returns success, and \a cwd is not \p
256 * NULL, the caller must close this file descriptor (probably after calling
259 * On errors, the function undos everything, so the caller needs neither close
260 * any files, nor change back to the original working directory.
265 static int fsck_opendir(const char *dirname, DIR **dir, int *cwd)
270 ret = osl_open(".", O_RDONLY, 0);
275 ret = __chdir(dirname);
281 ret = errno == EACCES? -E_FSCK_ACCESS : -E_FSCK_OPENDIR;
282 /* Ignore return value of fchdir() and close(). We're busted anyway. */
294 * Traverse the given directory recursively.
296 * \param dirname The directory to traverse.
297 * \param func The function to call for each entry.
298 * \param private_data Pointer to an arbitrary data structure.
300 * For each regular file under \a dirname, the supplied function \a func is
301 * called. The full path of the regular file and the \a private_data pointer
302 * are passed to \a func. Directories for which the calling process has no
303 * permissions to change to are silently ignored.
307 static int for_each_file_in_dir(const char *dirname,
308 int (*func)(const char *, void *), void *private_data)
311 struct dirent *entry;
312 int cwd_fd, ret2, ret = fsck_opendir(dirname, &dir, &cwd_fd);
315 return ret == -E_FSCK_ACCESS? 1 : ret;
316 /* scan cwd recursively */
317 while ((entry = readdir(dir))) {
322 if (!strcmp(entry->d_name, "."))
324 if (!strcmp(entry->d_name, ".."))
326 if (lstat(entry->d_name, &s) == -1)
329 if (!S_ISREG(m) && !S_ISDIR(m))
331 tmp = make_message("%s/%s", dirname, entry->d_name);
333 ret = func(tmp, private_data);
340 ret = for_each_file_in_dir(tmp, func, private_data);
348 ret2 = __fchdir(cwd_fd);
349 if (ret2 < 0 && ret >= 0)
356 * check for object boundary violations
358 * test whether the range pointed to by the index entry for a given cell is
359 * contained in mapped data file. This should always be the case. Otherwise
360 * we are in real trouble.
362 static int check_range(struct osl_table *t, uint32_t row_num, uint32_t col_num)
365 struct osl_object obj;
366 struct osl_column *col;
368 char *map_start, *obj_start;
370 ret = get_cell_index(t, row_num, col_num, &index_entry);
373 ret = get_mapped_object(t, col_num, row_num, &obj);
376 col = t->columns + col_num;
377 obj_start = obj.data;
378 map_start = col->data_map.data;
379 // INFO_LOG("obj: %p..%p\n", obj_start, obj_start + obj.size);
380 // INFO_LOG("map: %p..%p\n", map_start, map_start + col->data_map.size);
381 if (obj_start < map_start || obj_start + obj.size > map_start + col->data_map.size) {
382 CRIT_LOG("range violation in row %u, col %u\n", row_num,
384 return -E_FSCK_RANGE_VIOLATION;
386 DEBUG_LOG("col %u: ok\n", col_num);
390 static int fsck_mark_row_invalid(struct osl_table *t, int i)
392 if (conf.dry_run_given)
394 return mark_row_invalid(t, i);
398 * check all cells of the given table for boundary violations
400 static int check_index_ranges(struct osl_table *t)
404 INFO_LOG("checking for range violations in index\n");
405 //DEBUG_LOG("%d rows. %d columns\n", t->num_rows, t->desc->num_columns);
406 t->num_invalid_rows = 0;
407 for (i = 0; i < t->num_rows; i++) {
408 const struct osl_column_description *cd;
410 if (row_is_invalid(t, i)) {
411 t->num_invalid_rows++;
414 FOR_EACH_MAPPED_COLUMN(j, t, cd) {
415 ret = check_range(t, i, j);
417 if (ret != -E_FSCK_RANGE_VIOLATION)
419 ret = fsck_mark_row_invalid(t, i);
422 t->num_invalid_rows++;
428 if (t->num_invalid_rows)
429 NOTICE_LOG("ranges OK. %d invalid row(s) detected\n",
430 t->num_invalid_rows);
432 INFO_LOG("no invalid rows, no range violations, good\n");
438 static int move_index_entry(struct osl_table *t, uint32_t dest, uint32_t src)
440 char *dest_ie, *src_ie;
441 int ret = get_row_index(t, dest, &dest_ie);
445 ret = get_row_index(t, src, &src_ie);
448 INFO_LOG("moving entry #%u to position %u\n", src, dest);
449 memcpy(dest_ie, src_ie, t->row_index_size);
453 static int map_index(const struct osl_table_description *desc, struct osl_object *map)
455 char *filename = index_filename(desc);
458 ret = mmap_full_file(filename, O_RDWR, &map->data, &map->size, NULL);
459 DEBUG_LOG("mapping index %s: ret: %d, size: %zu\n", filename, ret, map->size);
464 static int prune_invalid_rows_from_index(struct osl_table *t)
466 uint32_t top = 0, bottom;
470 if (!t->num_invalid_rows) {
471 INFO_LOG("all rows are valid, good\n");
474 NOTICE_LOG("index contains %u invalid row(s) (%d bytes)\n",
475 t->num_invalid_rows, t->row_index_size * t->num_invalid_rows);
476 if (conf.dry_run_given)
478 NOTICE_LOG("removing invalid rows from index\n");
479 bottom = t->num_rows - 1;
480 while (top < bottom) {
481 if (!row_is_invalid(t, top)) {
485 while (bottom > top) {
486 if (row_is_invalid(t, bottom)) {
490 /* move bottom index entry to top */
491 move_index_entry(t, top, bottom);
497 DEBUG_LOG("unmapping index\n");
498 osl_munmap(t->index_map.data, t->index_map.size);
499 filename = index_filename(t->desc);
500 ret = truncate_file(filename, t->row_index_size
501 * t->num_invalid_rows);
505 ret = map_index(t->desc, &t->index_map);
508 t->num_rows = table_num_rows(t);
512 static int check_for_invalid_objects(struct osl_table *t, uint32_t **lost_bytes)
515 const struct osl_column_description *cd;
516 uint32_t *loss = fsck_malloc(sizeof(uint32_t) * t->desc->num_columns);
518 INFO_LOG("looking for mapped objects not contained in index\n");
519 /* first count used bytes */
520 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
521 loss[i] = t->columns[i].data_map.size;
522 DEBUG_LOG("column %i data map: %zu bytes\n", i,
523 t->columns[i].data_map.size);
524 for (j = 0; j < t->num_rows; j++) {
525 struct osl_object obj;
526 ret = get_mapped_object(t, i, j, &obj);
533 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
535 NOTICE_LOG("column %u contains %u lost bytes\n",
541 INFO_LOG("all mapped objects are valid, good\n");
549 /* prune_invalid_rows() must be run on the table before calling this */
550 static int prune_mapped_column(struct osl_table *t, uint32_t col_num, int fd)
553 uint32_t written = 0;
554 struct osl_column *col = t->columns + col_num;
556 INFO_LOG("pruning col %u\n", col_num);
557 for (i = 0; i < t->num_rows; i++) {
558 struct osl_object obj;
561 DEBUG_LOG("checking row %u/%u\n", i, t->num_rows);
562 ret = get_mapped_object(t, col_num, i, &obj);
565 ret = _write_all(fd, (char *)(obj.data), obj.size);
569 ret = get_row_index(t, i, &index_entry);
572 update_cell_index(index_entry, col, written, obj.size);
577 static int prune_objects(struct osl_table *t, uint32_t *lost_bytes)
580 const struct osl_column_description *cd;
581 char **col_filenames = fsck_calloc(t->desc->num_columns * sizeof(char *));
582 char **new_col_filenames = fsck_calloc(t->desc->num_columns * sizeof(char *));
583 char *idx_filename = index_filename(t->desc);
584 char *old_idx_filename = make_message("%s.bak", idx_filename);
587 NOTICE_LOG("removing unreferenced objects from data files\n");
588 /* first make a copy of the index */
589 DEBUG_LOG("opening %s\n", old_idx_filename);
590 ret = osl_open(old_idx_filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
594 ret = _write_all(fd, t->index_map.data, t->index_map.size);
598 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
601 col_filenames[i] = column_filename(t, i);
602 new_col_filenames[i] = make_message("%s.fsck", col_filenames[i]);
603 ret = osl_open(new_col_filenames[i], O_WRONLY | O_CREAT | O_EXCL, 0644);
605 goto out_unlink_data;
607 ret = prune_mapped_column(t, i, fd);
610 goto out_unlink_data;
612 ret = unmap_table(t, OSL_MARK_CLEAN);
614 goto out_unlink_data;
615 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
618 ret = osl_rename(new_col_filenames[i], col_filenames[i]);
619 if (ret < 0) { /* we're kinda screwed here */
620 CRIT_LOG("rename of col %i failed: %s\n", i,
621 osl_strerror(errno));
625 unlink(old_idx_filename);
626 ret = map_table(t, 0);
629 FOR_EACH_MAPPED_COLUMN(i, t, cd)
630 unlink(new_col_filenames[i]);
632 free(old_idx_filename);
634 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
635 free(col_filenames[i]);
636 free(new_col_filenames[i]);
639 free(new_col_filenames);
643 static struct osl_column_description hash_tree_table_cols[] = {
645 .storage_type = OSL_NO_STORAGE,
646 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
648 .compare_function = uint32_compare,
649 .data_size = HASH_SIZE
653 static const struct osl_table_description hash_tree_table_desc = {
654 .dir = "/", /* irrelevant */
658 .column_descriptions = hash_tree_table_cols
662 * The hash_tree table contains all hashes of the disk storage name column.
663 * of each row. It is used for checking if a disk storage file has a reference
666 static struct osl_table *hash_tree_table;
667 static HASH_TYPE *hashes;
669 static int check_disk_storage_column(struct osl_table *t, int row_num,
670 int col_num, char *ds_name, unsigned *num_missing_objects)
674 char *path = disk_storage_path(t, col_num, ds_name);
675 unsigned dsnc = t->disk_storage_name_column;
676 struct osl_object obj;
678 DEBUG_LOG("checking if %s is a regular file\n", path);
679 ret = stat(path, &statbuf);
680 if (ret < 0 && errno == ENOENT) {
682 (*num_missing_objects)++;
683 ERROR_LOG("row %d: object %s is missing\n", row_num, path);
685 if (conf.dry_run_given)
687 NOTICE_LOG("trying to delete row %d\n", row_num);
688 ret = osl_get_row(t, dsnc, &obj, &row);
690 CRIT_LOG("unable to get row %d\n", row_num);
691 fsck_mark_row_invalid(t, row_num);
692 CRIT_LOG("Please re-run fsck\n");
695 ret = osl_del_row(t, row);
703 ret = -E_FSCK_NOT_A_REGULAR_FILE;
704 if (!(S_IFREG & statbuf.st_mode))
709 static int check_disk_storage_presence(struct osl_table *t)
712 struct osl_object obj, hash_obj = {.size = HASH_SIZE};
714 const struct osl_column_description *cd;
715 unsigned dsnc = t->disk_storage_name_column, missing_objects = 0;
719 hashes = fsck_malloc(t->num_rows * HASH_SIZE);
720 INFO_LOG("looking for missing disk storage objects\n");
721 for (i = 0; i < t->num_rows; i++) {
722 if (row_is_invalid(t, i))
724 ret = get_mapped_object(t, dsnc, i, &obj);
727 hash_object(&obj, hashes + i * HASH_SIZE);
728 hash_obj.data = hashes + i * HASH_SIZE;
729 osl_add_row(hash_tree_table, &hash_obj);
730 ds_name = disk_storage_name_of_hash(t, hashes + i * HASH_SIZE);
731 FOR_EACH_DISK_STORAGE_COLUMN(j, t, cd) {
732 ret = check_disk_storage_column(t, i, j, ds_name,
739 if (!missing_objects)
740 INFO_LOG("all referenced disk storage objects exist, good\n");
742 NOTICE_LOG("%d missing object(s)\n", missing_objects);
743 return missing_objects;
749 static int dummy_compare(const struct osl_object *obj1, const struct osl_object *obj2)
758 static unsigned files_pruned;
760 static int prune_disk_storage_file(const char *path, void *private_data)
762 HASH_TYPE hash[HASH_SIZE];
763 uint8_t flags = *(uint8_t *)private_data;
764 struct osl_object obj = {.data = hash, .size = HASH_SIZE};
767 size_t len = strlen(path);
770 DEBUG_LOG("path: %s\n", path);
771 if (flags & OSL_LARGE_TABLE) {
772 if (len < HASH_SIZE * 2 + 2)
774 // NOTICE_LOG("p: %s\n", path + len - 2 * HASH_SIZE - 1);
775 ret = asc_to_hash(path + len - 2 * HASH_SIZE - 1, 1, hash);
778 ret = asc_to_hash(path + len - 2 * HASH_SIZE + 2, HASH_SIZE - 1,
782 // INFO_LOG("high: %x, low: %x, hash: %x\n", high, low, hash);
784 if (len < 2 * HASH_SIZE + 1)
786 ret = asc_to_hash(path + len - 2 * HASH_SIZE, 2 * HASH_SIZE, hash);
789 // INFO_LOG("hash: %x\n", hash);
793 char asc[2 * HASH_SIZE + 1];
794 hash_to_asc(hash, asc);
795 NOTICE_LOG("before: %s\nafter: %s\n", path, asc);
798 ret = osl_get_row(hash_tree_table, 0, &obj, &row);
801 NOTICE_LOG("unreferenced file in hash dir: %s\n", path);
804 ERROR_LOG("could not read hash value of %s\n", path);
806 if (conf.dry_run_given)
808 NOTICE_LOG("removing %s\n", path);
814 static int prune_disk_storage_files(struct osl_table *t)
817 const struct osl_column_description *cd;
819 INFO_LOG("looking for unreferenced disk storage files\n");
820 FOR_EACH_DISK_STORAGE_COLUMN(i, t, cd) {
821 char *dirname = column_filename(t, i);
822 uint8_t flags = t->desc->flags;
823 ret = for_each_file_in_dir(dirname, prune_disk_storage_file,
828 NOTICE_LOG("%u disk storage files deleted\n",
831 INFO_LOG("all files are are referenced, good\n");
835 static int check_disk_storage_columns(struct osl_table *t)
838 const struct osl_column_description *cd;
840 if (!t->num_disk_storage_columns) {
841 INFO_LOG("no disk storage columns in table '%s', "
842 "skipping checks\n", t->desc->name);
845 FOR_EACH_COLUMN(i, t->desc, cd)
846 t->desc->column_descriptions[i].compare_function = dummy_compare;
847 ret = init_rbtrees(t);
850 INFO_LOG("creating rbtree for disk storage hash values\n");
851 ret = osl_open_table(&hash_tree_table_desc, &hash_tree_table);
854 ret = check_disk_storage_presence(t);
856 goto out_close_hash_tree;
857 ret = prune_disk_storage_files(t);
859 osl_close_table(hash_tree_table, 0);
863 clear_rbtrees(t); /* TODO why are we doing that here? Seems odd */
867 static void set_dummy_contents(struct osl_table_description *desc)
870 struct osl_column_description *cd;
872 for (i = 0; i < desc->num_columns; i++) {
873 cd = get_column_description(desc, i);
874 cd->compare_function = dummy_compare;
878 static int fsck_init(struct osl_table_description *desc, struct osl_table **t)
880 struct osl_object map;
881 int ret = map_index(desc, &map);
885 ret = read_table_desc(&map, desc);
887 osl_munmap(map.data, map.size);
890 set_dummy_contents(desc);
891 ret = init_table_structure(desc, t);
893 osl_munmap(map.data, map.size);
896 DEBUG_LOG("unmapping index\n");
897 osl_munmap(map.data, map.size);
898 if (conf.force_given)
899 ret = map_table(*t, (MAP_TBL_FL_IGNORE_DIRTY));
901 ret = map_table(*t, 0);
903 (*t)->num_rows = table_num_rows(*t);
904 DEBUG_LOG("index header size: %d\n", (*t)->index_header_size);
905 DEBUG_LOG("row index size: %d\n", (*t)->row_index_size);
911 static void fsck_cleanup(struct osl_table *t)
917 if (t->desc->column_descriptions) {
918 struct osl_column_description *cd;
919 for (i = 0; i < t->desc->num_columns; i++) {
920 cd = get_column_description(t->desc, i);
921 free((char*)cd->name);
923 free(t->desc->column_descriptions);
930 #define ST_CASE(st) case st: return #st
932 static const char *get_asc_storage_type(enum osl_storage_type st)
935 ST_CASE(OSL_MAPPED_STORAGE);
936 ST_CASE(OSL_DISK_STORAGE);
937 ST_CASE(OSL_NO_STORAGE);
942 #define APPEND_ASC_SF(sf, flag, str) do { if (sf & flag) { \
943 if (str) str = make_message("%s%s", str, " | " # flag); \
944 else str = fsck_strdup(#flag); }} while (0)
947 static char *get_asc_storage_flags(enum osl_storage_type sf)
951 APPEND_ASC_SF(sf, OSL_RBTREE, asc_sf);
952 APPEND_ASC_SF(sf, OSL_FIXED_SIZE, asc_sf);
953 APPEND_ASC_SF(sf, OSL_UNIQUE, asc_sf);
957 static int dump_table_desc(struct osl_table *t, int fd)
959 const struct osl_table_description *desc = t->desc;
961 struct osl_column_description *cd;
962 char *msg = make_message("static struct osl_column_description cols[] = {\n");
963 ret = _write_all(fd, msg, strlen(msg));
967 FOR_EACH_COLUMN(i, desc, cd) {
969 msg = make_message("\t[%d] = {\n", i);
970 ret = _write_all(fd, msg, strlen(msg));
974 asc_st = get_asc_storage_type(cd->storage_type);
975 msg = make_message("\t\t.storage_type = %s,\n", asc_st);
976 ret = _write_all(fd, msg, strlen(msg));
980 if (cd->storage_flags) {
981 char *asc_sf = get_asc_storage_flags(cd->storage_flags);
982 msg = make_message("\t\t,storage_flags = %s,\n", asc_sf);
984 ret = _write_all(fd, msg, strlen(msg));
989 if (cd->storage_flags & OSL_FIXED_SIZE) {
990 msg = make_message("\t\t.data_size = %u,\n", cd->data_size);
991 ret = _write_all(fd, msg, strlen(msg));
996 msg = make_message("\t\t.name = \"%s\",\n", cd->name);
997 ret = _write_all(fd, msg, strlen(msg));
1001 if (cd->storage_flags & OSL_RBTREE) {
1002 msg = make_message("\t\t.compare_function = compare_func,\n");
1003 ret = _write_all(fd, msg, strlen(msg));
1008 msg = make_message("\t},\n");
1009 ret = _write_all(fd, msg, strlen(msg));
1014 msg = make_message("};\n");
1015 ret = _write_all(fd, msg, strlen(msg));
1022 static int dump_row(struct osl_table *t, unsigned row_num, const char *row_dir)
1025 const struct osl_column_description *cd;
1027 struct osl_object obj;
1029 HASH_TYPE hash[HASH_SIZE];
1032 FOR_EACH_MAPPED_COLUMN(i, t, cd) {
1033 ret = get_mapped_object(t, i, row_num, &obj);
1036 filename = make_message("%s/col_%03u", row_dir, i);
1037 ret = write_file(filename, obj.data, obj.size);
1042 if (!t->num_disk_storage_columns)
1044 dsnc = t->disk_storage_name_column;
1045 ret = get_mapped_object(t, dsnc, row_num, &obj);
1048 hash_object(&obj, hash);
1049 ds_name = disk_storage_name_of_hash(t, hash);
1050 FOR_EACH_DISK_STORAGE_COLUMN(i, t, cd) {
1051 filename = disk_storage_path(t, i, ds_name);
1052 ret = mmap_full_file(filename, O_RDONLY, &obj.data, &obj.size, NULL);
1056 filename = make_message("%s/col_%03u", row_dir, i);
1057 ret = write_file(filename, obj.data, obj.size);
1068 static int dump_rows(char *dump_dir, struct osl_table *t)
1071 char *current_dir = NULL;
1074 for (i = 0; i < t->num_rows; i++) {
1076 if (row_is_invalid(t, i))
1080 current_dir = make_message("%s/rows_%u-%u", dump_dir, i, i + 999);
1081 NOTICE_LOG("dumping rows %u - %u\n", i, i + 999);
1082 ret = osl_mkdir(current_dir, 0777);
1083 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1086 row_dir = make_message("%s/row_%03u", current_dir, i);
1087 ret = osl_mkdir(row_dir, 0777);
1088 if (ret < 0 && ret != -E_OSL_DIR_EXISTS) {
1092 ret = dump_row(t, i, row_dir);
1102 static int dump_table(char *dump_dir, struct osl_table_description *desc)
1104 struct osl_table *t = NULL;
1105 int fd, ret = fsck_init(desc, &t);
1107 char *table_dump_dir = NULL;
1111 ret = osl_mkdir(dump_dir, 0777);
1112 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1114 table_dump_dir = make_message("%s/%s", dump_dir, desc->name);
1115 ret = osl_mkdir(table_dump_dir, 0777);
1116 if (ret < 0 && ret != -E_OSL_DIR_EXISTS)
1118 desc_file = make_message("%s/table_description.c", table_dump_dir);
1119 ret = osl_open(desc_file, O_WRONLY | O_CREAT | O_EXCL, 0644);
1124 ret = dump_table_desc(t, fd);
1128 ret = dump_rows(table_dump_dir, t);
1130 free(table_dump_dir);
1135 static int fsck(struct osl_table_description *desc)
1138 struct osl_table *t = NULL;
1139 uint32_t *lost_bytes = NULL;
1141 ret = fsck_init(desc, &t);
1144 ret = check_index_ranges(t);
1147 ret = check_disk_storage_columns(t);
1150 ret = prune_invalid_rows_from_index(t);
1153 ret = check_for_invalid_objects(t, &lost_bytes);
1156 if (ret > 0 && !conf.dry_run_given) { /* at least one mapped data file needs pruning */
1157 ret = prune_objects(t, lost_bytes);
1163 unmap_table(t, OSL_MARK_CLEAN);
1169 static int check_table(char *db_dir, char *table_name)
1171 struct osl_table_description desc = {
1172 .column_descriptions = NULL,
1178 INFO_LOG("checking table %s\n", table_name);
1179 if (!conf.no_fsck_given) {
1185 if (!conf.dump_dir_given || !*conf.dump_dir_arg)
1187 ret = dump_table(conf.dump_dir_arg, &desc);
1190 ERROR_LOG("failed to check table %s: %s\n", table_name,
1191 fsck_strerror(-ret));
1193 NOTICE_LOG("successfully checked table %s\n", table_name);
1197 static int check_all_tables(char *db_dir)
1200 struct dirent *entry;
1201 int cwd_fd, ret2, ret = fsck_opendir(db_dir, &dir, &cwd_fd);
1205 while ((entry = readdir(dir))) {
1208 if (!strcmp(entry->d_name, "."))
1210 if (!strcmp(entry->d_name, ".."))
1212 if (lstat(entry->d_name, &s) == -1)
1217 ret = check_table(db_dir, entry->d_name);
1222 ret2 = __fchdir(cwd_fd);
1223 if (ret2 < 0 && ret >= 0)
1229 int main(int argc, char **argv)
1232 struct fsck_cmdline_parser_params params = {
1235 .check_required = 1,
1236 .check_ambiguity = 1,
1239 ret = fsck_cmdline_parser_ext(argc, argv, &conf, ¶ms);
1242 ret = -E_FSCK_SYNTAX;
1245 loglevel = conf.loglevel_arg;
1246 HANDLE_VERSION_FLAG("fsck", conf);
1247 INFO_LOG("database dir: %s\n", conf.database_dir_arg);
1248 if (!conf.inputs_num) {
1249 ret = check_all_tables(conf.database_dir_arg);
1252 for (i = 0; i < conf.inputs_num; i++) {
1253 ret = check_table(conf.database_dir_arg, conf.inputs[i]);
1259 ERROR_LOG("%s\n", fsck_strerror(-ret));
1260 if (conf.loglevel_arg > 1)
1261 EMERG_LOG("re-run with \"--loglevel %d\" to increase verbosity\n",
1262 conf.loglevel_arg - 1);
1264 NOTICE_LOG("success\n");
1265 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;