/* * Copyright 1996-2004 by Hans Reiser, licensing governed by * reiserfsprogs/README */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "fsck.h" #include "misc/malloc.h" #include "misc/device.h" #include "util/device.h" #include "util/misc.h" #include #define MIN(a, b) (((a)>(b))?(b):(a)) /* *size is "real" file size, sd_size - size from stat data */ int wrong_st_size (const reiserfs_key_t * key, unsigned long long max_file_size, int blocksize, __u64 * size, __u64 sd_size, int type) { if (sd_size <= max_file_size) { if (sd_size == *size) return 0; if (type == TYPE_DIRENTRY) { /* directory size must match to the sum of length of its entries */ fsck_log ("vpf-10650: The directory %K has the wrong size in the StatData " "(%Lu)%s(%Lu)\n", key, sd_size, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", *size); return 1; } if (sd_size > *size) { /* size in stat data can be bigger than size calculated by items */ if (fsck_adjust_file_size (fs) || type == TYPE_SYMLINK) { /* but it -o is given - fix that */ fsck_log ("vpf-10660: The file %K has too big size in the StatData " "(%Lu)%s(%Lu)\n", key, sd_size, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", *size); sem_pass_stat (fs)->fixed_sizes ++; return 1; } *size = sd_size; return 0; } if (!(*size % blocksize)) { /* last item is extent */ if (((sd_size & ~(blocksize - 1)) == (*size - blocksize)) && sd_size % blocksize) { /* size in stat data is correct */ *size = sd_size; return 0; } } else { /* last item is a direct one */ if (!(*size % 8)) { if (((sd_size & ~7) == (*size - 8)) && sd_size % 8) { /* size in stat data is correct */ *size = sd_size; return 0; } } } } fsck_log ("vpf-10670: The file %K has the wrong size in the StatData (%Lu)%s(%Lu)\n", key, sd_size, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", *size); sem_pass_stat (fs)->fixed_sizes ++; return 1; } /* sd_blocks is 32 bit only */ /* old stat data shares sd_block and sd_dev - do not wipe sd_rdev out */ /* we should fix it as following: |------------------------------------------------------------------| | | 3.6 | 3.5 | |---------------------------------------------------| | | | blocks | r_dev|generation | blocks/r_dev | |------------------------------------------------------------------| | fifo, sockets | 0 | generation | 0 | | chr/blk_dev | 0 | maj:min | maj:min | | file, dir, link | blocks | generation | blocks | |------------------------------------------------------------------| */ int wrong_st_blocks (const reiserfs_key_t * key, __u32 * blocks, __u32 sd_blocks, __u16 mode, int new_format) { int ret = 0; if (S_ISREG (mode) || S_ISLNK (mode) || S_ISDIR (mode)) { if ((!S_ISLNK(mode) && *blocks != sd_blocks) || (S_ISLNK(mode) && *blocks != sd_blocks && (MISC_ROUND_UP(*blocks) != sd_blocks))) { fsck_log ("vpf-10680: The %s %K has the wrong block count in the StatData " "(%u)%s(%u)\n", S_ISDIR (mode) ? "directory" : S_ISREG (mode) ? "file" : "link", key, sd_blocks, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", *blocks); ret = 1; } } else if (new_format || (S_ISFIFO (mode) || S_ISSOCK (mode))) { if (sd_blocks != 0) { fsck_log ("vpf-10690: The object %K has the wrong block count in the StatData " "(%u)%s(%u)\n", key, sd_blocks, fsck_mode(fs) == FSCK_CHECK ? ", should be " : " - corrected to ", 0); *blocks = 0; ret = 1; } } return ret; } /* int wrong_st_rdev (reiserfs_key_t * key, __u32 * sd_rdev, __u16 mode, int new_format) { int ret = 0; if (!new_format) return 0; if (!S_ISCHR (mode) && !S_ISBLK (mode)) { if (*sd_rdev != 0) { fsck_log ("%s %K has wrong sd_rdev %u, has to be 0\n", S_ISDIR (mode) ? "dir" : "file", key, *sd_rdev); *sd_rdev = 0; ret = 1; } } return ret; } */ /* only regular files and symlinks may have items but stat data. Symlink should have body */ int wrong_mode (reiserfs_key_t * key, __u16 * mode, __u64 real_size, int symlink) { int retval = 0; if (S_ISLNK (*mode) && !symlink) { fsck_log ("The file %K (%M) is too big to be the symlink%s regfile\n", key, *mode, fsck_mode(fs) == FSCK_CHECK ? ", should be the" : " - corrected " "to the"); *mode &= ~S_IFMT; *mode |= S_IFREG; retval = 1; } if (misc_device_typec (*mode) != '?') { /* mode looks reasonable */ if (S_ISREG (*mode) || S_ISLNK (*mode)) return retval; /* device, pipe, socket have no items */ if (!real_size) return retval; } /* there are items, so change file mode to regular file. Otherwise - file bodies do not get deleted */ if (fsck_mode(fs) == FSCK_CHECK) { fsck_log ("The object %K has wrong mode (%M)\n", key, *mode); } else { fsck_log("The object %K has wrong mode (%M) - corrected to %M\n", key, *mode, (S_IFREG | 0600)); } *mode = (S_IFREG | 0600); return 1; } /* key is a key of last file item */ int wrong_fdb (reiserfs_key_t * key, int blocksize, __u32 * first_direct_byte, __u32 sd_fdb, __u32 size) { if (!size || reiserfs_key_ext (key)) { /* there is no direct item */ *first_direct_byte = REISERFS_SD_NODIRECT; if (sd_fdb != REISERFS_SD_NODIRECT) { if (fsck_mode(fs) == FSCK_CHECK) { fsck_log ("The file %K: The wrong info about the tail in the StatData, " "first_direct_byte (%d) - should be (%d)\n", key, sd_fdb, *first_direct_byte); } else { fsck_log ("The file %K: The wrong info about the tail in the StatData, " "first_direct_byte (%d) - corrected to (%d)\n", key, sd_fdb, *first_direct_byte); } return 1; } return 0; } /* there is direct item */ *first_direct_byte = (reiserfs_key_get_off (key) & ~(blocksize - 1)) + 1; if (*first_direct_byte != sd_fdb) { if (fsck_mode(fs) == FSCK_CHECK) { fsck_log ("The file %K: The wrong info about the tail in the StatData, " "first_direct_byte (%d) - should be (%d)\n", key, sd_fdb, *first_direct_byte); } else { fsck_log ("The file %K: The wrong info about the tail in the StatData, " "first_direct_byte (%d) - corrected to (%d)\n", key, sd_fdb, *first_direct_byte); } return 1; } return 0; } /* delete all items (but directory ones) with the same key 'ih' has (including stat data of not a directory) and put them back at the other place */ void relocate_dir (reiserfs_ih_t * ih) { const reiserfs_key_t * rkey; reiserfs_ih_t * path_ih; reiserfs_path_t path; __u32 new_objectid; reiserfs_key_t key; saveitem_t * si; int moved; /* starting with the leftmost one - look for all items of file, store them and delete */ key = ih->ih_key; reiserfs_key_set_sec (KEY_FORMAT_1, &key, OFFSET_SD, TYPE_STAT_DATA); si = 0; while (1) { reiserfs_tree_search_item (fs, &key, &path); if (REISERFS_PATH_LEAF_POS (&path) == reiserfs_node_items (REISERFS_PATH_LEAF (&path))) { rkey = reiserfs_tree_rkey (&path, fs); if (rkey && !reiserfs_key_comp2 (&key, rkey)) { /* file continues in the right neighbor */ key = *rkey; reiserfs_tree_pathrelse (&path); continue; } /* there is no more items of a directory */ reiserfs_tree_pathrelse (&path); break; } path_ih = REISERFS_PATH_IH (&path); if (reiserfs_key_comp2 (&key, &(path_ih->ih_key))) { /* there are no more item with this key */ reiserfs_tree_pathrelse (&path); break; } /* ok, item found, but make sure that it is not a directory one */ if ((reiserfs_ih_stat (path_ih) && not_a_directory (REISERFS_PATH_ITEM (&path))) || reiserfs_ih_direct (path_ih) || reiserfs_ih_ext (path_ih)) { /* item of not a directory found. Leave it in the tree. FIXME: should not happen */ key = path_ih->ih_key; reiserfs_key_set_off (KEY_FORMAT_1, &key, reiserfs_key_get_off (&key) + 1); reiserfs_tree_pathrelse (&path); continue; } /* directory stat data ro directory item */ fsck_item_save(&path, &si); reiserfs_tree_delete(fs, &path, 1); } if (!si) { fsck_log ("%s: WARNING: No one item of the directory " "%K found\n", __FUNCTION__, &key); return; } /* get new objectid for relocation or get objectid with which file was relocated already */ new_objectid = fsck_relocate_oid (&ih->ih_key); moved = 0; /* put all items removed back into tree */ while (si) { reiserfs_key_set_oid (&si->si_ih.ih_key, new_objectid); if (reiserfs_key_get_off (&(si->si_ih.ih_key)) == OFFSET_DOT) { /* fix "." entry to point to a directtory properly */ reiserfs_deh_t * deh; deh = (reiserfs_deh_t *)si->si_dnm_data; reiserfs_deh_set_obid (deh, new_objectid); } fsck_tree_insert_item (&(si->si_ih), si->si_dnm_data, 0); si = fsck_item_free(si); moved++; } if (moved) { fsck_log("%s: %d items of dir %K are moved to %u oid\n", __FUNCTION__, moved, &ih->ih_key, new_objectid); } reiserfs_key_set_oid (&ih->ih_key, new_objectid); } /* path is path to stat data. If file will be relocated - new_ih will contain a key file was relocated with */ int rebuild_check_regular_file (reiserfs_path_t * path, void * sd, reiserfs_ih_t * new_ih) { int is_new_file; // reiserfs_key_t sd_key; __u16 mode; __u32 nlink; __u64 real_size, saved_size; __u32 blocks, saved_blocks; /* proper values and value in stat data */ __u32 first_direct_byte, saved_fdb; reiserfs_bh_t * bh; reiserfs_ih_t * ih, sd_ih; int fix_sd; int symlnk = 0; int retval; retval = OK; /* stat data of a file */ ih = REISERFS_PATH_IH (path); bh = REISERFS_PATH_LEAF (path); if (new_ih) { /* this objectid is used already */ *new_ih = *ih; reiserfs_tree_pathrelse (path); fsck_file_relocate (&new_ih->ih_key, 1); fsck_relocate_mklinked(&new_ih->ih_key); sem_pass_stat (fs)->oid_sharing_files_relocated ++; retval = RELOCATED; if (reiserfs_tree_search_item (fs, &(new_ih->ih_key), path) == ITEM_NOT_FOUND) reiserfs_panic ("%s: Could not find the StatData of the relocated file %k", __FUNCTION__, &(new_ih->ih_key)); /* stat data is marked unreachable again due to relocation, fix that */ ih = REISERFS_PATH_IH (path); bh = REISERFS_PATH_LEAF (path); fsck_item_mkreach (ih, bh); sd = REISERFS_PATH_ITEM (path); } id_map_mark(semantic_id_map(fs), reiserfs_key_get_oid (&ih->ih_key)); /* check and set nlink first */ reiserfs_stat_get_nlink (ih, sd, &nlink); nlink ++; reiserfs_stat_set_nlink (ih, sd, &nlink); reiserfs_buffer_mkdirty (bh); if (nlink > 1) return retval; /* firts name of a file found */ if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE) is_new_file = 1; else is_new_file = 0; reiserfs_stat_get_mode (ih, sd, &mode); reiserfs_stat_get_size (ih, sd, &saved_size); reiserfs_stat_get_blocks (ih, sd, &saved_blocks); if (!is_new_file) reiserfs_stat_get_fdb (ih, sd, &saved_fdb); /* we met this file first time */ if (S_ISREG (mode)) { sem_pass_stat(fs)->regular_files ++; } else if (S_ISLNK (mode)) { symlnk = 1; sem_pass_stat (fs)->symlinks ++; } else { sem_pass_stat (fs)->others ++; } sd_ih = *ih; // sd_key = sd_ih.ih_key; reiserfs_tree_pathrelse (path); if (are_file_items_correct (&sd_ih, sd, &real_size, &blocks, 1/*mark reachable*/, &symlnk) != 1) { /* unpassed items will be deleted in pass 4 as they left unaccessed */ fsck_log("%s: some items of %K are left unaccessed.\n", __FUNCTION__, &sd_ih.ih_key); sem_pass_stat (fs)->broken_files ++; } fix_sd = 0; fix_sd += wrong_mode (/*&sd_key, */ &sd_ih.ih_key, &mode, real_size, symlnk); if (!is_new_file) fix_sd += wrong_fdb (&sd_ih.ih_key, fs->fs_blocksize, &first_direct_byte, saved_fdb, real_size); fix_sd += wrong_st_size (/*&sd_key,*/ &sd_ih.ih_key, is_new_file ? REISERFS_SD_SIZE_MAX_V2 : REISERFS_SD_SIZE_MAX_V1, fs->fs_blocksize, &real_size, saved_size, symlnk ? TYPE_SYMLINK : 0); fix_sd += wrong_st_blocks (&sd_ih.ih_key, &blocks, saved_blocks, mode, is_new_file); if (fix_sd) { /* find stat data and correct it */ reiserfs_key_set_sec (KEY_FORMAT_1, &sd_ih.ih_key, OFFSET_SD, TYPE_STAT_DATA); if (reiserfs_tree_search_item (fs, &sd_ih.ih_key, path) != ITEM_FOUND) reiserfs_panic ("%s: The StatData of the file %k could not be found", __FUNCTION__, &sd_ih.ih_key); bh = REISERFS_PATH_LEAF (path); ih = REISERFS_PATH_IH (path); sd = REISERFS_PATH_ITEM (path); reiserfs_stat_set_size (ih, sd, &real_size); reiserfs_stat_set_blocks (ih, sd, &blocks); reiserfs_stat_set_mode (ih, sd, &mode); if (!is_new_file) reiserfs_stat_set_fdb (ih, sd, &first_direct_byte); reiserfs_buffer_mkdirty (bh); } return retval; } static int is_rootdir_key (const reiserfs_key_t * key) { if (reiserfs_key_comp (key, &root_dir_key)) return 0; return 1; } /* returns buffer, containing found directory item.*/ static char * get_next_directory_item (reiserfs_key_t * key, /* on return this will contain key of next item in the tree */ const reiserfs_key_t * parent, reiserfs_ih_t * ih,/*not in tree*/ __u32 * pos_in_item) { const reiserfs_key_t * rdkey; REISERFS_PATH_INIT (path); reiserfs_deh_t * deh; reiserfs_bh_t * bh; char * dir_item; int retval; int i; if ((retval = reiserfs_tree_search_entry (fs, key, &path)) != POSITION_FOUND) reiserfs_panic ("get_next_directory_item: The current directory %k cannot be " "found", key); /* leaf containing directory item */ bh = REISERFS_PATH_LEAF (&path); *pos_in_item = path.pos_in_item; *ih = *REISERFS_PATH_IH (&path); deh = reiserfs_deh (bh, ih); /* make sure, that ".." exists as well */ if (reiserfs_key_get_off (key) == OFFSET_DOT) { if (reiserfs_ih_get_entries (ih) < 2 || reiserfs_direntry_name_len (ih, deh + 1, 1) != 2 || strncmp (reiserfs_deh_name (deh + 1, 1), "..", 2)) { fsck_log ("get_next_directory_item: The entry \"..\" cannot be " "found in %k\n", &ih->ih_key); reiserfs_tree_pathrelse (&path); return 0; } } /* mark hidden entries as visible, set "." and ".." correctly */ deh += *pos_in_item; for (i = *pos_in_item; i < reiserfs_ih_get_entries (ih); i ++, deh ++) { int namelen; char * name; name = reiserfs_deh_name (deh, i); namelen = reiserfs_direntry_name_len (ih, deh, i); if (reiserfs_deh_get_off (deh) == OFFSET_DOT) { if (reiserfs_key_comp2 (&(deh->deh2_dir_id), key)) { /* "." must point to the directory it is in */ //deh->deh_objectid != REISERFS_ROOT_PARENT_OBJECTID)/*????*/ { fsck_log ("get_next_directory_item: The entry \".\" of the " "directory %K points to %K, instead of %K", key, (reiserfs_key_t *)(&(deh->deh2_dir_id)), key); reiserfs_deh_set_did (deh, reiserfs_key_get_did (key)); reiserfs_deh_set_obid (deh, reiserfs_key_get_oid (key)); reiserfs_buffer_mkdirty (bh); fsck_log (" - corrected\n"); } } if (reiserfs_deh_get_off (deh) == OFFSET_DOT_DOT) { /* set ".." so that it points to the correct parent directory */ if (reiserfs_key_comp2 (&(deh->deh2_dir_id), parent)) { fsck_log ("get_next_directory_item: The entry \"..\" of the " "directory %K points to %K, instead of %K", key, (reiserfs_key_t *)(&(deh->deh2_dir_id)), parent); reiserfs_deh_set_did (deh, reiserfs_key_get_did (parent)); reiserfs_deh_set_obid (deh, reiserfs_key_get_oid (parent)); reiserfs_buffer_mkdirty (bh); fsck_log (" - corrected\n"); } } } /* copy directory item to the temporary buffer */ dir_item = misc_getmem (reiserfs_ih_get_len (ih)); memcpy (dir_item, reiserfs_item_by_ih (bh, ih), reiserfs_ih_get_len (ih)); /* next item key */ if ((rdkey = reiserfs_tree_next_key (&path, fs))) reiserfs_key_copy (key, rdkey); else { reiserfs_key_set_did (key, 0); reiserfs_key_set_oid (key, 0); } if (fsck_mode (fs) == FSCK_REBUILD) fsck_item_mkreach (REISERFS_PATH_IH (&path), bh); reiserfs_tree_pathrelse (&path); return dir_item; } // get key of an object pointed by direntry and the key of the entry itself void get_object_key (reiserfs_deh_t * deh, reiserfs_key_t * key, reiserfs_key_t * entry_key, reiserfs_ih_t * ih) { /* entry points to this key */ reiserfs_key_set_did (key, reiserfs_deh_get_did (deh)); reiserfs_key_set_oid (key, reiserfs_deh_get_obid (deh)); reiserfs_key_set_off1 (key, OFFSET_SD); reiserfs_key_set_uni (key, 0); /* key of entry */ reiserfs_key_set_did (entry_key, reiserfs_key_get_did (&ih->ih_key)); reiserfs_key_set_oid (entry_key, reiserfs_key_get_oid (&ih->ih_key)); reiserfs_key_set_off1 (entry_key, reiserfs_deh_get_off (deh)); reiserfs_key_set_uni (entry_key, UNI_DE); } int fix_obviously_wrong_sd_mode (reiserfs_path_t * path) { const reiserfs_key_t * next_key; __u16 mode; int retval = 0; next_key = reiserfs_tree_next_key (path, fs); if (!next_key) return 0; if (reiserfs_key_comp2 (next_key, &REISERFS_PATH_IH(path)->ih_key)) return 0; /* next item exists and of the same file. Fix the SD mode */ if (not_a_directory (REISERFS_PATH_ITEM (path)) && reiserfs_key_dir (next_key)) { /* make SD mode SD of dir */ reiserfs_stat_get_mode (REISERFS_PATH_IH (path), REISERFS_PATH_ITEM (path), &mode); fsck_log ("The directory %K had wrong mode %M", &REISERFS_PATH_IH(path)->ih_key, mode); if (fsck_mode(fs) != FSCK_CHECK) { mode &= ~S_IFMT; mode |= S_IFDIR; fsck_log (" - corrected to %M\n", mode); reiserfs_stat_set_mode (REISERFS_PATH_IH (path), REISERFS_PATH_ITEM (path), &mode); reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF(path)); } else { fsck_log ("\n"); retval = 1; } } else if (!not_a_directory (REISERFS_PATH_ITEM (path)) && !reiserfs_key_dir (next_key)) { /* make SD mode SD of regular file */ reiserfs_stat_get_mode (REISERFS_PATH_IH (path), REISERFS_PATH_ITEM (path), &mode); fsck_log ("The file %K had wrong mode %M", &REISERFS_PATH_IH(path)->ih_key, mode); if (fsck_mode(fs) != FSCK_CHECK) { mode &= ~S_IFMT; mode |= S_IFREG; fsck_log (" - corrected to %M\n", mode); reiserfs_stat_set_mode (REISERFS_PATH_IH (path), REISERFS_PATH_ITEM (path), &mode); reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF(path)); } else { fsck_log ("\n"); retval = 1; } } return retval; } static int is_lost_found (char * name, int namelen) { return (namelen == 10 && !memcmp(name, "lost+found", 10)) ? 1 : 0; } void cb_item_modify (reiserfs_ih_t *ih, void *item) { zero_nlink (ih, item); reiserfs_ih_mkunreach (ih); } /* check recursively the semantic tree. Returns OK if entry points to good object, STAT_DATA_NOT_FOUND if stat data was not found or RELOCATED when file was relocated because its objectid was already marked as used by another file */ int rebuild_semantic_pass (reiserfs_key_t * key, const reiserfs_key_t * parent, int etype, reiserfs_ih_t * new_ih) { reiserfs_path_t path; void * sd; int is_new_dir; __u32 nlink; reiserfs_bh_t * bh; reiserfs_ih_t * ih; int retval, retval1; char * dir_item; __u32 pos_in_item; reiserfs_ih_t tmp_ih; reiserfs_key_t item_key, entry_key, object_key, *found; __u64 dir_size; __u32 blocks; __u64 saved_size; __u32 saved_blocks; int fix_sd; int relocate; int dir_format = 0; __u16 mode; int entry_len; retval = OK; start_again: /* when directory was relocated */ if (!reiserfs_key_stat (key)) reiserfs_panic ("rebuild_semantic_pass: The key %k must " "be key of a StatData", key); /* look for stat data of an object */ if (reiserfs_tree_search_item (fs, key, &path) == ITEM_NOT_FOUND) { if (is_rootdir_key (key)) /* root directory has to exist at this point */ reiserfs_panic ("rebuild_semantic_pass: The root directory " "StatData was not found"); /* If an item of the same object is found, create a stat item. */ found = &REISERFS_PATH_IH(&path)->ih_key; if (!reiserfs_key_comp2(key, found)) { if (reiserfs_key_dir (found) || reiserfs_key_get_off (key) == 1) { sem_pass_stat(fs)->added_sd ++; reiserfs_tree_create_stat (fs, &path, key, cb_item_modify); reiserfs_tree_pathrelse (&path); goto start_again; } } reiserfs_tree_pathrelse (&path); return STAT_DATA_NOT_FOUND; } if ((etype == ET_NAME) && !reiserfs_key_comp2(key, &lost_found_dir_key)) { /* This is not "lost+found" entry that points to "lost+found" object. */ reiserfs_tree_pathrelse (&path); return DIRECTORY_HAS_NO_ITEMS; } /* stat data has been found */ bh = REISERFS_PATH_LEAF (&path); ih = REISERFS_PATH_IH (&path); sd = REISERFS_PATH_ITEM(&path); /* */ reiserfs_stat_get_nlink (ih, sd, &nlink); relocate = 0; if (!nlink) { /* we reached the stat data for the first time */ if (id_map_mark(semantic_id_map(fs), reiserfs_key_get_oid (&ih->ih_key))) { /* calculate number of found files/dirs who are using objectid which is used by another file */ sem_pass_stat (fs)->oid_sharing ++; relocate = 1; } fsck_item_mkreach (ih, bh); } fix_obviously_wrong_sd_mode (&path); if (not_a_directory (sd)) { retval = rebuild_check_regular_file (&path, sd, relocate ? new_ih : 0); reiserfs_tree_pathrelse (&path); return retval; } if (relocate) { if (!new_ih) reiserfs_panic ("rebuild_semantic_pass: Memory is not " "prepared for relocation of %K", &ih->ih_key); *new_ih = *ih; reiserfs_tree_pathrelse (&path); sem_pass_stat (fs)->oid_sharing_dirs_relocated ++; relocate_dir (new_ih); fsck_relocate_mklinked(&new_ih->ih_key); *key = new_ih->ih_key; retval = RELOCATED; goto start_again; } /* it looks like stat data of a directory found */ if (nlink) { /* we saw this directory already */ if (etype != ET_DOT_DOT) { /* this name is not ".." - and hard links are not allowed on directories */ reiserfs_tree_pathrelse (&path); return STAT_DATA_NOT_FOUND; } else { /* ".." found */ nlink ++; reiserfs_stat_set_nlink (ih, sd, &nlink); reiserfs_buffer_mkdirty (bh); reiserfs_tree_pathrelse (&path); return OK; } } /* we see the directory first time */ sem_pass_stat (fs)->directories ++; nlink = 2; if (reiserfs_key_get_oid (key) == REISERFS_ROOT_OBJECTID) nlink ++; reiserfs_stat_set_nlink (ih, sd, &nlink); reiserfs_buffer_mkdirty (bh); if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE) is_new_dir = 1; else is_new_dir = 0; /* { reiserfs_key_t * tmp; // check next item: if it is not a directory item of the same file // therefore sd_mode is corrupted so we just reset it to regular file // mode tmp = reiserfs_tree_next_key (&path); if (tmp && !reiserfs_key_comp2 (tmp, key) && !reiserfs_key_dir (tmp)) { __u16 mode; reiserfs_stat_get_mode (ih, sd, &mode); fsck_log ("file %K had broken mode %M, ", key, mode); mode &= ~S_IFMT; mode |= S_IFREG; fsck_log ("fixed to %M\n", mode); reiserfs_stat_set_mode (ih, sd, &mode); nlink = 0; reiserfs_stat_set_nlink (ih, sd, &nlink); retval = rebuild_check_regular_file (&path, sd, 0); //no relocate reiserfs_tree_pathrelse (&path); return retval; } } */ dir_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) == REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1; /* save stat data's size and st_blocks */ reiserfs_stat_get_size (ih, sd, &saved_size); reiserfs_stat_get_blocks (ih, sd, &saved_blocks); reiserfs_stat_get_mode (ih, sd, &mode); /* release path pointing to stat data */ reiserfs_tree_pathrelse (&path); /* make sure that "." and ".." exist */ entry_len = reiserfs_direntry_entry_estimate (".", dir_format); reiserfs_tree_insert_entry (fs, key, ".", entry_len, key, 1 << IH_Unreachable); entry_len = reiserfs_direntry_entry_estimate ("..", dir_format); reiserfs_tree_insert_entry (fs, key, "..", entry_len, parent, 1 << IH_Unreachable); reiserfs_key_set_did (&item_key, reiserfs_key_get_did (key)); reiserfs_key_set_oid (&item_key, reiserfs_key_get_oid (key)); reiserfs_key_set_off1 (&item_key, OFFSET_DOT); reiserfs_key_set_uni (&item_key, UNI_DE); dir_size = 0; while ((dir_item = get_next_directory_item (&item_key, parent, &tmp_ih, &pos_in_item)) != 0) { /* dir_item is copy of the item in separately allocated memory, item_key is a key of next item in the tree */ int i; char name[REISERFS_NAME_MAX]; int namelen, entry_len; reiserfs_deh_t * deh = (reiserfs_deh_t *)dir_item + pos_in_item; for (i = pos_in_item; i < reiserfs_ih_get_entries (&tmp_ih); i ++, deh ++) { reiserfs_ih_t relocated_ih; name[0] = '\0'; namelen = reiserfs_direntry_name_len (&tmp_ih, deh, i); sprintf(name, "%.*s", namelen, reiserfs_deh_name (deh, i)); entry_len = reiserfs_direntry_entry_len (&tmp_ih, deh, i); get_object_key (deh, &object_key, &entry_key, &tmp_ih); if ((dir_format == KEY_FORMAT_2) && (entry_len % 8 != 0)) { /* not alighed directory of new format - delete it */ fsck_log ("Entry %K (\"%.*s\") in the directory %K is not " "formated properly - fixed.\n", (reiserfs_key_t *)&(deh->deh2_dir_id), namelen, name, &tmp_ih.ih_key); reiserfs_tree_delete_entry (fs, &entry_key); entry_len = reiserfs_direntry_entry_estimate (name, dir_format); reiserfs_tree_insert_entry (fs, key, name, entry_len, (reiserfs_key_t *)&(deh->deh2_dir_id), 0); } /* if ((dir_format == KEY_FORMAT_1) && (namelen != entry_len)) { // aligned entry in directory of old format - remove and // insert it back fsck_log ("Entry %K (\"%.*s\") in the directory %K is not " "formated properly - deleted\n", (reiserfs_key_t *)&(deh->deh2_dir_id), namelen, name, &tmp_ih.ih_key); reiserfs_tree_delete_entry (fs, &entry_key); entry_len = reiserfs_direntry_entry_estimate (name, dir_format); reiserfs_tree_insert_entry (fs, key, name, entry_len, (reiserfs_key_t *)&(deh->deh2_dir_id), 0); } */ if (is_dot (name, namelen)) { dir_size += REISERFS_DEH_SIZE + entry_len; continue; } if (!fsck_quiet(fs)) { util_misc_print_name (fsck_progress_file(fs), name, namelen); } if (!reiserfs_hash_correct (&fs->hash, name, namelen, reiserfs_deh_get_off (deh))) { reiserfs_panic ("rebuild_semantic_pass: Hash mismatch " "detected for (\"%.*s\") in directory %K\n", namelen, name, &tmp_ih.ih_key); } retval1 = rebuild_semantic_pass (&object_key, key, is_dot_dot (name, namelen) ? ET_DOT_DOT : reiserfs_key_get_oid (key) == REISERFS_ROOT_OBJECTID && is_lost_found (name, namelen) ? ET_LOST_FOUND : 0, &relocated_ih); if (!fsck_quiet(fs)) { util_misc_erase_name (fsck_progress_file(fs), namelen); } switch (retval1) { case OK: dir_size += REISERFS_DEH_SIZE + entry_len; break; case STAT_DATA_NOT_FOUND: case DIRECTORY_HAS_NO_ITEMS: if (reiserfs_key_get_off (&entry_key) == OFFSET_DOT_DOT && reiserfs_key_get_oid (&object_key) == REISERFS_ROOT_PARENT_OBJECTID) { /* ".." of root directory can not be found */ dir_size += REISERFS_DEH_SIZE + entry_len; continue; } fsck_log ("%s: The entry %K (\"%.*s\") in directory %K " "points to nowhere - is removed\n", __FUNCTION__, &object_key, namelen, name, &tmp_ih.ih_key); reiserfs_tree_delete_entry (fs, &entry_key); sem_pass_stat (fs)->deleted_entries ++; break; case RELOCATED: /* file was relocated, update key in directory entry */ if (reiserfs_tree_search_entry (fs, &entry_key, &path) != POSITION_FOUND) { fsck_log ("WARNING: Cannot find the name of the relocated " "file %K in the directory %K\n", &object_key, &tmp_ih.ih_key); } else { /* update key dir entry points to */ reiserfs_deh_t * tmp_deh; tmp_deh = reiserfs_deh (REISERFS_PATH_LEAF (&path), REISERFS_PATH_IH (&path)) + path.pos_in_item; fsck_log ("The entry %K (\"%.*s\") in directory %K " "updated to point to ", &object_key, namelen, name, &tmp_ih.ih_key); reiserfs_deh_set_did (tmp_deh, reiserfs_key_get_did (&relocated_ih.ih_key)); reiserfs_deh_set_obid (tmp_deh, reiserfs_key_get_oid (&relocated_ih.ih_key)); fsck_log ("%K\n", &tmp_deh->deh2_dir_id); reiserfs_buffer_mkdirty (REISERFS_PATH_LEAF (&path)); } dir_size += REISERFS_DEH_SIZE + entry_len; reiserfs_tree_pathrelse (&path); break; } } /* for */ misc_freemem (dir_item); if (reiserfs_key_comp2 (&item_key, key) || !reiserfs_key_dir(&item_key)) /* next key is not of this directory */ break; } /* while (dir_item) */ if (dir_size == 0) /* FIXME: is it possible? */ return DIRECTORY_HAS_NO_ITEMS; /* calc correct value of sd_blocks field of stat data */ blocks = REISERFS_DIR_BLOCKS (dir_size); fix_sd = 0; fix_sd += wrong_st_blocks (key, &blocks, saved_blocks, mode, is_new_dir); fix_sd += wrong_st_size (key, is_new_dir ? REISERFS_SD_SIZE_MAX_V2 : REISERFS_SD_SIZE_MAX_V1, fs->fs_blocksize, &dir_size, saved_size, TYPE_DIRENTRY); if (fix_sd) { /* we have to fix either sd_size or sd_blocks, so look for SD again */ if (reiserfs_tree_search_item (fs, key, &path) != ITEM_FOUND) reiserfs_panic ("rebuild_semantic_pass: The StatData of the " "file %K was not found", key); bh = REISERFS_PATH_LEAF (&path); ih = REISERFS_PATH_IH (&path); sd = REISERFS_PATH_ITEM (&path); reiserfs_stat_set_size (ih, sd, &dir_size); reiserfs_stat_set_blocks (ih, sd, &blocks); reiserfs_buffer_mkdirty (bh); reiserfs_tree_pathrelse (&path); } return retval; } int is_dot (char * name, int namelen) { return (namelen == 1 && name[0] == '.') ? 1 : 0; } int is_dot_dot (char * name, int namelen) { return (namelen == 2 && name[0] == '.' && name[1] == '.') ? 1 : 0; } int not_a_directory (void * sd) { /* mode is at the same place and of the same size in both stat datas (v1 and v2) */ reiserfs_sd_v1_t * sd_v1 = sd; return !(S_ISDIR (le16_to_cpu (sd_v1->sd_mode))); } int not_a_regfile (void * sd) { /* mode is at the same place and of the same size in both stat datas (v1 and v2) */ reiserfs_sd_v1_t * sd_v1 = sd; return !(S_ISREG (le16_to_cpu (sd_v1->sd_mode))); } void zero_nlink (reiserfs_ih_t * ih, void * sd) { int zero = 0; if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE_V1 && reiserfs_ih_get_format (ih) != KEY_FORMAT_1) { fsck_log ("zero_nlink: The StatData %k of the wrong format version " "(%d) - corrected to (%d)\n", ih, reiserfs_ih_get_format (ih), KEY_FORMAT_1); reiserfs_ih_set_format (ih, KEY_FORMAT_1); } if (reiserfs_ih_get_len (ih) == REISERFS_SD_SIZE && reiserfs_ih_get_format (ih) != KEY_FORMAT_2) { fsck_log ("zero_nlink: The StatData %k of the wrong format version " "(%d) - corrected to (%d)\n", ih, reiserfs_ih_get_format (ih), KEY_FORMAT_2); reiserfs_ih_set_format (ih, KEY_FORMAT_2); } reiserfs_stat_set_nlink (ih, sd, &zero); } /* mkreiserfs should have created this */ static void make_sure_lost_found_exists (reiserfs_filsys_t * fs, __u16 root_format) { int retval; REISERFS_PATH_INIT (path); unsigned int gen_counter; __u32 objectid; __u64 sd_size; __u32 sd_blocks; reiserfs_bh_t * bh; reiserfs_ih_t * ih; void * sd; int item_len; int entry_len; /* look for "lost+found" in the root directory */ retval = reiserfs_tree_search_name (fs, &root_dir_key, "lost+found", &gen_counter, &lost_found_dir_key); if (!retval) { objectid = id_map_alloc(proper_id_map(fs)); if (!objectid) { fsck_progress ("Could not allocate an objectid for '/lost+found'", "lost files will not be linked\n"); return; } reiserfs_key_set_did (&lost_found_dir_key, REISERFS_ROOT_OBJECTID); reiserfs_key_set_oid (&lost_found_dir_key, objectid); } /* look for stat data of "lost+found" */ retval = reiserfs_tree_search_item (fs, &lost_found_dir_key, &path); if (retval == ITEM_NOT_FOUND) { fs->lost_format = reiserfs_tree_create_stat (fs, &path, &lost_found_dir_key, cb_item_modify); } else { reiserfs_ih_t * ih = REISERFS_PATH_IH (&path); if (!reiserfs_ih_stat (ih)) reiserfs_panic ("It must be lost+found's stat data %k\n", &ih->ih_key); fix_obviously_wrong_sd_mode (&path); if (not_a_directory (REISERFS_PATH_ITEM (&path))) { fsck_progress ("\"/lost+found\" exists, but it is not a " "directory, lost files will not be linked\n"); reiserfs_key_set_oid (&lost_found_dir_key, 0); reiserfs_tree_pathrelse (&path); return; } fs->lost_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) == REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1; reiserfs_tree_pathrelse (&path); } /* add "." and ".." if any of them do not exist */ entry_len = reiserfs_direntry_entry_estimate (".", fs->lost_format); reiserfs_tree_insert_entry (fs, &lost_found_dir_key, ".", entry_len, &lost_found_dir_key, 1 << IH_Unreachable); entry_len = reiserfs_direntry_entry_estimate ("..", fs->lost_format); reiserfs_tree_insert_entry (fs, &lost_found_dir_key, "..", entry_len, &root_dir_key, 1 << IH_Unreachable); entry_len = reiserfs_direntry_entry_estimate ("lost+found", root_format); item_len = reiserfs_tree_insert_entry (fs, &root_dir_key, "lost+found", entry_len, &lost_found_dir_key, 1 << IH_Unreachable); if (item_len) { if (reiserfs_tree_search_item (fs, &root_dir_key, &path) == ITEM_NOT_FOUND) { reiserfs_panic ("%s: StatData of the root directory must exists", __FUNCTION__); } bh = REISERFS_PATH_LEAF (&path); ih = REISERFS_PATH_IH (&path); sd = REISERFS_PATH_ITEM(&path); reiserfs_stat_get_size (ih, sd, &sd_size); sd_size += item_len; reiserfs_stat_set_size (ih, sd, &sd_size); sd_blocks = REISERFS_DIR_BLOCKS (sd_size); reiserfs_stat_set_blocks (ih, sd, &sd_blocks); reiserfs_buffer_mkdirty (bh); reiserfs_tree_pathrelse (&path); } return; } /* Result of the rebuild pass will be saved in the state file which is needed to start fsck again from the next pass. */ static void fsck_semantic_save_result (reiserfs_filsys_t * fs) { FILE * file; int retval; file = util_file_open ("temp_fsck_file.deleteme", "w+"); if (!file) return; fsck_stage_start_put (file, SEMANTIC_DONE); reiserfs_objectid_map_save (file, semantic_id_map (fs)); fsck_stage_end_put (file); fclose (file); retval = rename ("temp_fsck_file.deleteme", state_dump_file (fs)); if (retval != 0) { fsck_progress ("%s: Could not rename the temporary file " "temp_fsck_file.deleteme to %s", __FUNCTION__, state_dump_file (fs)); } } /* we have nothing to load from a state file, but we have to fetch on-disk bitmap, copy it to allocable bitmap, and fetch objectid map */ void fsck_semantic_load_result (FILE * file, reiserfs_filsys_t * fs) { unsigned int gen_counter; REISERFS_PATH_INIT(path); fsck_new_bitmap (fs) = reiserfs_bitmap_create (reiserfs_sb_get_blocks (fs->fs_ondisk_sb)); reiserfs_bitmap_copy (fsck_new_bitmap (fs), fs->fs_bitmap2); fsck_allocable_bitmap (fs) = reiserfs_bitmap_create (reiserfs_sb_get_blocks (fs->fs_ondisk_sb)); reiserfs_bitmap_copy (fsck_allocable_bitmap (fs), fs->fs_bitmap2); fs->block_allocator = reiserfsck_new_blocknrs; fs->block_deallocator = reiserfsck_free_block; /* we need objectid map on semantic pass to be able to relocate files */ proper_id_map (fs) = id_map_init(); fetch_objectid_map (proper_id_map (fs), fs); semantic_id_map (fs) = reiserfs_objectid_map_load (file); /* get the lost_found key. */ if (!(reiserfs_tree_search_name (fs, &root_dir_key, "lost+found", &gen_counter, &lost_found_dir_key))) { reiserfs_panic("Lost&found entry cannot be found in the root dir."); } if (reiserfs_tree_search_item (fs, &lost_found_dir_key, &path) == ITEM_NOT_FOUND) { reiserfs_panic("Lost&found StatData item cannot be found."); } fs->lost_format = (reiserfs_ih_get_len (REISERFS_PATH_IH (&path)) == REISERFS_SD_SIZE) ? KEY_FORMAT_2 : KEY_FORMAT_1; reiserfs_tree_pathrelse (&path); } static void before_pass_3 (reiserfs_filsys_t * fs) { semantic_id_map (fs) = id_map_init(); } static void after_pass_3 (reiserfs_filsys_t * fs) { /* update super block: objectid map, fsck state */ reiserfs_sb_set_state (fs->fs_ondisk_sb, SEMANTIC_DONE); reiserfs_buffer_mkdirty (fs->fs_super_bh); /* write all dirty blocks */ fsck_progress ("Flushing.."); id_map_flush(proper_id_map (fs), fs); fs->fs_dirt = 1; reiserfs_bitmap_flush (fsck_new_bitmap(fs), fs); reiserfs_fs_flush (fs); fsck_progress ("finished\n"); fsck_stage_report (FS_SEMANTIC, fs); if (!fsck_run_one_step (fs)) { if (fsck_info_ask (fs, "Continue? (Yes):", "Yes\n", 1)) /* reiserfsck continues */ return; } fsck_semantic_save_result (fs); id_map_free(proper_id_map (fs)); proper_id_map (fs) = 0; fs->fs_dirt = 1; reiserfs_fs_close (fs); exit(0); } /* this is part of rebuild tree */ void fsck_semantic (reiserfs_filsys_t * fs) { __u16 root_format; before_pass_3 (fs); fsck_progress ("Pass 3 (semantic):\n"); /* when warnings go not to stderr - separate them in the log */ if (fsck_log_file (fs) != stderr) fsck_log ("####### Pass 3 #########\n"); if (!fs->hash) reiserfs_panic ("Hash function should be selected already"); root_format = reiserfs_tree_root (fs, cb_item_modify, 1 << IH_Unreachable); make_sure_lost_found_exists (fs, root_format); id_map_mark(proper_id_map(fs), reiserfs_key_get_oid(&root_dir_key)); id_map_mark(proper_id_map(fs), reiserfs_key_get_oid(&lost_found_dir_key)); /* link all relocated files into /lost+found directory */ fsck_relocate_link_all(); rebuild_semantic_pass ((reiserfs_key_t *)&root_dir_key, &parent_root_dir_key, ET_NAME, 0/*reloc_ih*/); if (!fsck_quiet(fs)) util_misc_fini_name(fsck_progress_file(fs)); reiserfs_badblock_flush(fs, 1); after_pass_3 (fs); }