diff options
Diffstat (limited to 'e2fsprogs/e2fsck/pass1.c')
| -rw-r--r-- | e2fsprogs/e2fsck/pass1.c | 2122 |
1 files changed, 0 insertions, 2122 deletions
diff --git a/e2fsprogs/e2fsck/pass1.c b/e2fsprogs/e2fsck/pass1.c deleted file mode 100644 index 8d01cae..0000000 --- a/e2fsprogs/e2fsck/pass1.c +++ /dev/null @@ -1,2122 +0,0 @@ -/* - * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table - * - * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. - * - * %Begin-Header% - * This file may be redistributed under the terms of the GNU Public - * License. - * %End-Header% - * - * Pass 1 of e2fsck iterates over all the inodes in the filesystems, - * and applies the following tests to each inode: - * - * - The mode field of the inode must be legal. - * - The size and block count fields of the inode are correct. - * - A data block must not be used by another inode - * - * Pass 1 also gathers the collects the following information: - * - * - A bitmap of which inodes are in use. (inode_used_map) - * - A bitmap of which inodes are directories. (inode_dir_map) - * - A bitmap of which inodes are regular files. (inode_reg_map) - * - A bitmap of which inodes have bad fields. (inode_bad_map) - * - A bitmap of which inodes are in bad blocks. (inode_bb_map) - * - A bitmap of which inodes are imagic inodes. (inode_imagic_map) - * - A bitmap of which blocks are in use. (block_found_map) - * - A bitmap of which blocks are in use by two inodes (block_dup_map) - * - The data blocks of the directory inodes. (dir_map) - * - * Pass 1 is designed to stash away enough information so that the - * other passes should not need to read in the inode information - * during the normal course of a filesystem check. (Althogh if an - * inconsistency is detected, other passes may need to read in an - * inode to fix it.) - * - * Note that pass 1B will be invoked if there are any duplicate blocks - * found. - */ - -#define _GNU_SOURCE 1 /* get strnlen() */ -#include <string.h> -#include <time.h> -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif - -#include "e2fsck.h" -#include <ext2fs/ext2_ext_attr.h> - -#include "problem.h" - -#ifdef NO_INLINE_FUNCS -#define _INLINE_ -#else -#define _INLINE_ inline -#endif - -static int process_block(ext2_filsys fs, blk_t *blocknr, - e2_blkcnt_t blockcnt, blk_t ref_blk, - int ref_offset, void *priv_data); -static int process_bad_block(ext2_filsys fs, blk_t *block_nr, - e2_blkcnt_t blockcnt, blk_t ref_blk, - int ref_offset, void *priv_data); -static void check_blocks(e2fsck_t ctx, struct problem_context *pctx, - char *block_buf); -static void mark_table_blocks(e2fsck_t ctx); -static void alloc_bb_map(e2fsck_t ctx); -static void alloc_imagic_map(e2fsck_t ctx); -static void mark_inode_bad(e2fsck_t ctx, ino_t ino); -static void handle_fs_bad_blocks(e2fsck_t ctx); -static void process_inodes(e2fsck_t ctx, char *block_buf); -static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b); -static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan, - dgrp_t group, void * priv_data); -static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount, - char *block_buf, int adjust_sign); -/* static char *describe_illegal_block(ext2_filsys fs, blk_t block); */ - -extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino, - struct ext2_inode * inode, int bufsize, - const char *proc); - -struct process_block_struct { - ext2_ino_t ino; - unsigned is_dir:1, is_reg:1, clear:1, suppress:1, - fragmented:1, compressed:1, bbcheck:1; - blk_t num_blocks; - blk_t max_blocks; - e2_blkcnt_t last_block; - int num_illegal_blocks; - blk_t previous_block; - struct ext2_inode *inode; - struct problem_context *pctx; - ext2fs_block_bitmap fs_meta_blocks; - e2fsck_t ctx; -}; - -struct process_inode_block { - ext2_ino_t ino; - struct ext2_inode inode; -}; - -struct scan_callback_struct { - e2fsck_t ctx; - char *block_buf; -}; - -/* - * For the inodes to process list. - */ -static struct process_inode_block *inodes_to_process; -static int process_inode_count; - -static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE - - EXT2_MIN_BLOCK_LOG_SIZE + 1]; - -/* - * Free all memory allocated by pass1 in preparation for restarting - * things. - */ -static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused))) -{ - ext2fs_free_mem(&inodes_to_process); - inodes_to_process = 0; -} - -/* - * Check to make sure a device inode is real. Returns 1 if the device - * checks out, 0 if not. - * - * Note: this routine is now also used to check FIFO's and Sockets, - * since they have the same requirement; the i_block fields should be - * zero. - */ -int e2fsck_pass1_check_device_inode(ext2_filsys fs, struct ext2_inode *inode) -{ - int i; - - /* - * If i_blocks is non-zero, or the index flag is set, then - * this is a bogus device/fifo/socket - */ - if ((ext2fs_inode_data_blocks(fs, inode) != 0) || - (inode->i_flags & EXT2_INDEX_FL)) - return 0; - - /* - * We should be able to do the test below all the time, but - * because the kernel doesn't forcibly clear the device - * inode's additional i_block fields, there are some rare - * occasions when a legitimate device inode will have non-zero - * additional i_block fields. So for now, we only complain - * when the immutable flag is set, which should never happen - * for devices. (And that's when the problem is caused, since - * you can't set or clear immutable flags for devices.) Once - * the kernel has been fixed we can change this... - */ - if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) { - for (i=4; i < EXT2_N_BLOCKS; i++) - if (inode->i_block[i]) - return 0; - } - return 1; -} - -/* - * Check to make sure a symlink inode is real. Returns 1 if the symlink - * checks out, 0 if not. - */ -int e2fsck_pass1_check_symlink(ext2_filsys fs, struct ext2_inode *inode, - char *buf) -{ - unsigned int len; - int i; - blk_t blocks; - - if ((inode->i_size_high || inode->i_size == 0) || - (inode->i_flags & EXT2_INDEX_FL)) - return 0; - - blocks = ext2fs_inode_data_blocks(fs, inode); - if (blocks) { - if ((inode->i_size >= fs->blocksize) || - (blocks != fs->blocksize >> 9) || - (inode->i_block[0] < fs->super->s_first_data_block) || - (inode->i_block[0] >= fs->super->s_blocks_count)) - return 0; - - for (i = 1; i < EXT2_N_BLOCKS; i++) - if (inode->i_block[i]) - return 0; - - if (io_channel_read_blk(fs->io, inode->i_block[0], 1, buf)) - return 0; - - len = strnlen(buf, fs->blocksize); - if (len == fs->blocksize) - return 0; - } else { - if (inode->i_size >= sizeof(inode->i_block)) - return 0; - - len = strnlen((char *)inode->i_block, sizeof(inode->i_block)); - if (len == sizeof(inode->i_block)) - return 0; - } - if (len != inode->i_size) - return 0; - return 1; -} - -/* - * If the immutable (or append-only) flag is set on the inode, offer - * to clear it. - */ -#define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL) -static void check_immutable(e2fsck_t ctx, struct problem_context *pctx) -{ - if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS)) - return; - - if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx)) - return; - - pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS; - e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1"); -} - -/* - * If device, fifo or socket, check size is zero -- if not offer to - * clear it - */ -static void check_size(e2fsck_t ctx, struct problem_context *pctx) -{ - struct ext2_inode *inode = pctx->inode; - - if ((inode->i_size == 0) && (inode->i_size_high == 0)) - return; - - if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx)) - return; - - inode->i_size = 0; - inode->i_size_high = 0; - e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1"); -} - -static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx) -{ - struct ext2_super_block *sb = ctx->fs->super; - struct ext2_inode_large *inode; - struct ext2_ext_attr_entry *entry; - char *start, *end; - int storage_size, remain, offs; - int problem = 0; - - inode = (struct ext2_inode_large *) pctx->inode; - storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE - - inode->i_extra_isize; - start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE + - inode->i_extra_isize + sizeof(__u32); - end = (char *) inode + EXT2_INODE_SIZE(ctx->fs->super); - entry = (struct ext2_ext_attr_entry *) start; - - /* scan all entry's headers first */ - - /* take finish entry 0UL into account */ - remain = storage_size - sizeof(__u32); - offs = end - start; - - while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { - - /* header eats this space */ - remain -= sizeof(struct ext2_ext_attr_entry); - - /* is attribute name valid? */ - if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) { - pctx->num = entry->e_name_len; - problem = PR_1_ATTR_NAME_LEN; - goto fix; - } - - /* attribute len eats this space */ - remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len); - - /* check value size */ - if (entry->e_value_size == 0 || entry->e_value_size > remain) { - pctx->num = entry->e_value_size; - problem = PR_1_ATTR_VALUE_SIZE; - goto fix; - } - - /* check value placement */ - if (entry->e_value_offs + - EXT2_XATTR_SIZE(entry->e_value_size) != offs) { - printf("(entry->e_value_offs + entry->e_value_size: %d, offs: %d)\n", entry->e_value_offs + entry->e_value_size, offs); - pctx->num = entry->e_value_offs; - problem = PR_1_ATTR_VALUE_OFFSET; - goto fix; - } - - /* e_value_block must be 0 in inode's ea */ - if (entry->e_value_block != 0) { - pctx->num = entry->e_value_block; - problem = PR_1_ATTR_VALUE_BLOCK; - goto fix; - } - - /* e_hash must be 0 in inode's ea */ - if (entry->e_hash != 0) { - pctx->num = entry->e_hash; - problem = PR_1_ATTR_HASH; - goto fix; - } - - remain -= entry->e_value_size; - offs -= EXT2_XATTR_SIZE(entry->e_value_size); - - entry = EXT2_EXT_ATTR_NEXT(entry); - } -fix: - /* - * it seems like a corruption. it's very unlikely we could repair - * EA(s) in automatic fashion -bzzz - */ -#if 0 - problem = PR_1_ATTR_HASH; -#endif - if (problem == 0 || !fix_problem(ctx, problem, pctx)) - return; - - /* simple remove all possible EA(s) */ - *((__u32 *)start) = 0UL; - e2fsck_write_inode_full(ctx, pctx->ino, (struct ext2_inode *)inode, - EXT2_INODE_SIZE(sb), "pass1"); -} - -static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx) -{ - struct ext2_super_block *sb = ctx->fs->super; - struct ext2_inode_large *inode; - __u32 *eamagic; - int min, max; - - inode = (struct ext2_inode_large *) pctx->inode; - if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) { - /* this isn't large inode. so, nothing to check */ - return; - } - -#if 0 - printf("inode #%u, i_extra_size %d\n", pctx->ino, - inode->i_extra_isize); -#endif - /* i_extra_isize must cover i_extra_isize + i_pad1 at least */ - min = sizeof(inode->i_extra_isize) + sizeof(inode->i_pad1); - max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE; - /* - * For now we will allow i_extra_isize to be 0, but really - * implementations should never allow i_extra_isize to be 0 - */ - if (inode->i_extra_isize && - (inode->i_extra_isize < min || inode->i_extra_isize > max)) { - if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx)) - return; - inode->i_extra_isize = min; - e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode, - EXT2_INODE_SIZE(sb), "pass1"); - return; - } - - eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE + - inode->i_extra_isize); - if (*eamagic == EXT2_EXT_ATTR_MAGIC) { - /* it seems inode has an extended attribute(s) in body */ - check_ea_in_inode(ctx, pctx); - } -} - -void e2fsck_pass1(e2fsck_t ctx) -{ - int i; - __u64 max_sizes; - ext2_filsys fs = ctx->fs; - ext2_ino_t ino; - struct ext2_inode *inode; - ext2_inode_scan scan; - char *block_buf; -#ifdef RESOURCE_TRACK - struct resource_track rtrack; -#endif - unsigned char frag, fsize; - struct problem_context pctx; - struct scan_callback_struct scan_struct; - struct ext2_super_block *sb = ctx->fs->super; - int imagic_fs; - int busted_fs_time = 0; - int inode_size; - -#ifdef RESOURCE_TRACK - init_resource_track(&rtrack); -#endif - clear_problem_context(&pctx); - - if (!(ctx->options & E2F_OPT_PREEN)) - fix_problem(ctx, PR_1_PASS_HEADER, &pctx); - - if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) && - !(ctx->options & E2F_OPT_NO)) { - if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50)) - ctx->dirs_to_hash = 0; - } - -#ifdef MTRACE - mtrace_print("Pass 1"); -#endif - -#define EXT2_BPP(bits) (1ULL << ((bits) - 2)) - - for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) { - max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i); - max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i); - max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i); - max_sizes = (max_sizes * (1UL << i)) - 1; - ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes; - } -#undef EXT2_BPP - - imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES); - - /* - * Allocate bitmaps structures - */ - pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("in-use inode map"), - &ctx->inode_used_map); - if (pctx.errcode) { - pctx.num = 1; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - pctx.errcode = ext2fs_allocate_inode_bitmap(fs, - _("directory inode map"), &ctx->inode_dir_map); - if (pctx.errcode) { - pctx.num = 2; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - pctx.errcode = ext2fs_allocate_inode_bitmap(fs, - _("regular file inode map"), &ctx->inode_reg_map); - if (pctx.errcode) { - pctx.num = 6; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - pctx.errcode = ext2fs_allocate_block_bitmap(fs, _("in-use block map"), - &ctx->block_found_map); - if (pctx.errcode) { - pctx.num = 1; - fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0, - &ctx->inode_link_info); - if (pctx.errcode) { - fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - inode_size = EXT2_INODE_SIZE(fs->super); - inode = (struct ext2_inode *) - e2fsck_allocate_memory(ctx, inode_size, "scratch inode"); - - inodes_to_process = (struct process_inode_block *) - e2fsck_allocate_memory(ctx, - (ctx->process_inode_size * - sizeof(struct process_inode_block)), - "array of inodes to process"); - process_inode_count = 0; - - pctx.errcode = ext2fs_init_dblist(fs, 0); - if (pctx.errcode) { - fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - - /* - * If the last orphan field is set, clear it, since the pass1 - * processing will automatically find and clear the orphans. - * In the future, we may want to try using the last_orphan - * linked list ourselves, but for now, we clear it so that the - * ext3 mount code won't get confused. - */ - if (!(ctx->options & E2F_OPT_READONLY)) { - if (fs->super->s_last_orphan) { - fs->super->s_last_orphan = 0; - ext2fs_mark_super_dirty(fs); - } - } - - mark_table_blocks(ctx); - block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3, - "block interate buffer"); - e2fsck_use_inode_shortcuts(ctx, 1); - ehandler_operation(_("doing inode scan")); - pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks, - &scan); - if (pctx.errcode) { - fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0); - ctx->stashed_inode = inode; - scan_struct.ctx = ctx; - scan_struct.block_buf = block_buf; - ext2fs_set_inode_callback(scan, scan_callback, &scan_struct); - if (ctx->progress) - if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count)) - return; - if (fs->super->s_wtime < fs->super->s_inodes_count) - busted_fs_time = 1; - - while (1) { - pctx.errcode = ext2fs_get_next_inode_full(scan, &ino, - inode, inode_size); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) { - if (!ctx->inode_bb_map) - alloc_bb_map(ctx); - ext2fs_mark_inode_bitmap(ctx->inode_bb_map, ino); - ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); - continue; - } - if (pctx.errcode) { - fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - if (!ino) - break; - pctx.ino = ino; - pctx.inode = inode; - ctx->stashed_ino = ino; - if (inode->i_links_count) { - pctx.errcode = ext2fs_icount_store(ctx->inode_link_info, - ino, inode->i_links_count); - if (pctx.errcode) { - pctx.num = inode->i_links_count; - fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - } - if (ino == EXT2_BAD_INO) { - struct process_block_struct pb; - - pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map, - &pb.fs_meta_blocks); - if (pctx.errcode) { - pctx.num = 4; - fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - pb.ino = EXT2_BAD_INO; - pb.num_blocks = pb.last_block = 0; - pb.num_illegal_blocks = 0; - pb.suppress = 0; pb.clear = 0; pb.is_dir = 0; - pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0; - pb.inode = inode; - pb.pctx = &pctx; - pb.ctx = ctx; - pctx.errcode = ext2fs_block_iterate2(fs, ino, 0, - block_buf, process_bad_block, &pb); - ext2fs_free_block_bitmap(pb.fs_meta_blocks); - if (pctx.errcode) { - fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx); - ctx->flags |= E2F_FLAG_ABORT; - return; - } - if (pb.bbcheck) - if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) { - ctx->flags |= E2F_FLAG_ABORT; - return; - } - ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); - clear_problem_context(&pctx); - continue; - } else if (ino == EXT2_ROOT_INO) { - /* - * Make sure the root inode is a directory; if - * not, offer to clear it. It will be - * regnerated in pass #3. - */ - if (!LINUX_S_ISDIR(inode->i_mode)) { - if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) { - inode->i_dtime = time(0); - inode->i_links_count = 0; - ext2fs_icount_store(ctx->inode_link_info, - ino, 0); - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - - } - /* - * If dtime is set, offer to clear it. mke2fs - * version 0.2b created filesystems with the - * dtime field set for the root and lost+found - * directories. We won't worry about - * /lost+found, since that can be regenerated - * easily. But we will fix the root directory - * as a special case. - */ - if (inode->i_dtime && inode->i_links_count) { - if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) { - inode->i_dtime = 0; - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - } - } else if (ino == EXT2_JOURNAL_INO) { - ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); - if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) { - if (!LINUX_S_ISREG(inode->i_mode) && - fix_problem(ctx, PR_1_JOURNAL_BAD_MODE, - &pctx)) { - inode->i_mode = LINUX_S_IFREG; - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - check_blocks(ctx, &pctx, block_buf); - continue; - } - if ((inode->i_links_count || inode->i_blocks || - inode->i_blocks || inode->i_block[0]) && - fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR, - &pctx)) { - memset(inode, 0, inode_size); - ext2fs_icount_store(ctx->inode_link_info, - ino, 0); - e2fsck_write_inode_full(ctx, ino, inode, - inode_size, "pass1"); - } - } else if (ino < EXT2_FIRST_INODE(fs->super)) { - int problem = 0; - - ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); - if (ino == EXT2_BOOT_LOADER_INO) { - if (LINUX_S_ISDIR(inode->i_mode)) - problem = PR_1_RESERVED_BAD_MODE; - } else if (ino == EXT2_RESIZE_INO) { - if (inode->i_mode && - !LINUX_S_ISREG(inode->i_mode)) - problem = PR_1_RESERVED_BAD_MODE; - } else { - if (inode->i_mode != 0) - problem = PR_1_RESERVED_BAD_MODE; - } - if (problem) { - if (fix_problem(ctx, problem, &pctx)) { - inode->i_mode = 0; - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - } - check_blocks(ctx, &pctx, block_buf); - continue; - } - /* - * Check for inodes who might have been part of the - * orphaned list linked list. They should have gotten - * dealt with by now, unless the list had somehow been - * corrupted. - * - * FIXME: In the future, inodes which are still in use - * (and which are therefore) pending truncation should - * be handled specially. Right now we just clear the - * dtime field, and the normal e2fsck handling of - * inodes where i_size and the inode blocks are - * inconsistent is to fix i_size, instead of releasing - * the extra blocks. This won't catch the inodes that - * was at the end of the orphan list, but it's better - * than nothing. The right answer is that there - * shouldn't be any bugs in the orphan list handling. :-) - */ - if (inode->i_dtime && !busted_fs_time && - inode->i_dtime < ctx->fs->super->s_inodes_count) { - if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) { - inode->i_dtime = inode->i_links_count ? - 0 : time(0); - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - } - - /* - * This code assumes that deleted inodes have - * i_links_count set to 0. - */ - if (!inode->i_links_count) { - if (!inode->i_dtime && inode->i_mode) { - if (fix_problem(ctx, - PR_1_ZERO_DTIME, &pctx)) { - inode->i_dtime = time(0); - e2fsck_write_inode(ctx, ino, inode, - "pass1"); - } - } - continue; - } - /* - * n.b. 0.3c ext2fs code didn't clear i_links_count for - * deleted files. Oops. - * - * Since all new ext2 implementations get this right, - * we now assume that the case of non-zero - * i_links_count and non-zero dtime means that we - * should keep the file, not delete it. - * - */ - if (inode->i_dtime) { - if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) { - inode->i_dtime = 0; - e2fsck_write_inode(ctx, ino, inode, "pass1"); - } - } - - ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); - switch (fs->super->s_creator_os) { - case EXT2_OS_LINUX: - frag = inode->osd2.linux2.l_i_frag; - fsize = inode->osd2.linux2.l_i_fsize; - break; - case EXT2_OS_HURD: - frag = inode->osd2.hurd2.h_i_frag; - fsize = inode->osd2.hurd2.h_i_fsize; - break; - case EXT2_OS_MASIX: - frag = inode->osd2.masix2.m_i_frag; - fsize = inode->osd2.masix2.m_i_fsize; - break; - default: - frag = fsize = 0; - } - - if (inode->i_faddr || frag || fsize || - (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl)) - mark_inode_bad(ctx, ino); - if (inode->i_flags & EXT2_IMAGIC_FL) { - if (imagic_fs) { - if (!ctx->inode_imagic_map) - alloc_imagic_map(ctx); - ext2fs_mark_inode_bitmap(ctx->inode_imagic_map, - ino); - } else { - if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) { - inode->i_flags &= ~EXT2_IMAGIC_FL; - e2fsck_write_inode(ctx, ino, - inode, "pass1"); - } - } - } - - check_inode_extra_space(ctx, &pctx); - - if (LINUX_S_ISDIR(inode->i_mode)) { - ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino); - e2fsck_add_dir_info(ctx, ino, 0); - ctx->fs_directory_count++; - } else if (LINUX_S_ISREG (inode->i_mode)) { - ext2fs_mark_inode_bitmap(ctx->inode_reg_map, ino); - ctx->fs_regular_count++; - } else if (LINUX_S_ISCHR (inode->i_mode) && - e2fsck_pass1_check_device_inode(fs, inode)) { - check_immutable(ctx, &pctx); - check_size(ctx, &pctx); - ctx->fs_chardev_count++; - } else if (LINUX_S_ISBLK (inode->i_mode) && - e2fsck_pass1_check_device_inode(fs, inode)) { - check_immutable(ctx, &pctx); - check_size(ctx, &pctx); - ctx->fs_blockdev_count++; - } else if (LINUX_S_ISLNK (inode->i_mode) && - e2fsck_pass1_check_symlink(fs, inode, block_buf)) { - check_immutable(ctx, &pctx); - ctx->fs_symlinks_count++; - if (ext2fs_inode_data_blocks(fs, inode) == 0) { - ctx->fs_fast_symlinks_count++; - check_blocks(ctx, &pctx, block_buf); - continue; - } - } - else if (LINUX_S_ISFIFO (inode->i_mode) && - e2fsck_pass1_check_device_inode(fs, inode)) { - check_immutable(ctx, &pctx); - check_size(ctx, &pctx); - ctx->fs_fifo_count++; - } else if ((LINUX_S_ISSOCK (inode->i_mode)) && - e2fsck_pass1_check_device_inode(fs, inode)) { - check_immutable(ctx, &pctx); - check_size(ctx, &pctx); - ctx->fs_sockets_count++; - } else - mark_inode_bad(ctx, ino); - if (inode->i_block[EXT2_IND_BLOCK]) - ctx->fs_ind_count++; - if (inode->i_block[EXT2_DIND_BLOCK]) - ctx->fs_dind_count++; - if (inode->i_block[EXT2_TIND_BLOCK]) - ctx->fs_tind_count++; - if (inode->i_block[EXT2_IND_BLOCK] || - inode->i_block[EXT2_DIND_BLOCK] || - inode->i_block[EXT2_TIND_BLOCK] || - inode->i_file_acl) { - inodes_to_process[process_inode_count].ino = ino; - inodes_to_process[process_inode_count].inode = *inode; - process_inode_count++; - } else - check_blocks(ctx, &pctx, block_buf); - - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - - if (process_inode_count >= ctx->process_inode_size) { - process_inodes(ctx, block_buf); - - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return; - } - } - process_inodes(ctx, block_buf); - ext2fs_close_inode_scan(scan); - ehandler_operation(0); - - /* - * If any extended attribute blocks' reference counts need to - * be adjusted, either up (ctx->refcount_extra), or down - * (ctx->refcount), then fix them. - */ - if (ctx->refcount) { - adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1); - ea_refcount_free(ctx->refcount); - ctx->refcount = 0; - } - if (ctx->refcount_extra) { - adjust_extattr_refcount(ctx, ctx->refcount_extra, - block_buf, +1); - ea_refcount_free(ctx->refcount_extra); - ctx->refcount_extra = 0; - } - - if (ctx->invalid_bitmaps) - handle_fs_bad_blocks(ctx); - - /* We don't need the block_ea_map any more */ - if (ctx->block_ea_map) { - ext2fs_free_block_bitmap(ctx->block_ea_map); - ctx->block_ea_map = 0; - } - - if (ctx->flags & E2F_FLAG_RESIZE_INODE) { - ext2fs_block_bitmap save_bmap; - - save_bmap = fs->block_map; - fs->block_map = ctx->block_found_map; - clear_problem_context(&pctx); - pctx.errcode = ext2fs_create_resize_inode(fs); - if (pctx.errcode) { - fix_problem(ctx, PR_1_RESIZE_INODE_CREATE, &pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return; - } - fs->block_map = save_bmap; - ctx->flags &= ~E2F_FLAG_RESIZE_INODE; - } - - if (ctx->flags & E2F_FLAG_RESTART) { - /* - * Only the master copy of the superblock and block - * group descriptors are going to be written during a - * restart, so set the superblock to be used to be the - * master superblock. - */ - ctx->use_superblock = 0; - unwind_pass1(fs); - goto endit; - } - - if (ctx->block_dup_map) { - if (ctx->options & E2F_OPT_PREEN) { - clear_problem_context(&pctx); - fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx); - } - e2fsck_pass1_dupblocks(ctx, block_buf); - } - ext2fs_free_mem(&inodes_to_process); -endit: - e2fsck_use_inode_shortcuts(ctx, 0); - - ext2fs_free_mem(&block_buf); - ext2fs_free_mem(&inode); - -#ifdef RESOURCE_TRACK - if (ctx->options & E2F_OPT_TIME2) { - e2fsck_clear_progbar(ctx); - print_resource_track(_("Pass 1"), &rtrack); - } -#endif -} - -/* - * When the inode_scan routines call this callback at the end of the - * glock group, call process_inodes. - */ -static errcode_t scan_callback(ext2_filsys fs, - ext2_inode_scan scan EXT2FS_ATTR((unused)), - dgrp_t group, void * priv_data) -{ - struct scan_callback_struct *scan_struct; - e2fsck_t ctx; - - scan_struct = (struct scan_callback_struct *) priv_data; - ctx = scan_struct->ctx; - - process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf); - - if (ctx->progress) - if ((ctx->progress)(ctx, 1, group+1, - ctx->fs->group_desc_count)) - return EXT2_ET_CANCEL_REQUESTED; - - return 0; -} - -/* - * Process the inodes in the "inodes to process" list. - */ -static void process_inodes(e2fsck_t ctx, char *block_buf) -{ - int i; - struct ext2_inode *old_stashed_inode; - ext2_ino_t old_stashed_ino; - const char *old_operation; - char buf[80]; - struct problem_context pctx; - -#if 0 - printf("begin process_inodes: "); -#endif - if (process_inode_count == 0) - return; - old_operation = ehandler_operation(0); - old_stashed_inode = ctx->stashed_inode; - old_stashed_ino = ctx->stashed_ino; - qsort(inodes_to_process, process_inode_count, - sizeof(struct process_inode_block), process_inode_cmp); - clear_problem_context(&pctx); - for (i=0; i < process_inode_count; i++) { - pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode; - pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino; - -#if 0 - printf("%u ", pctx.ino); -#endif - sprintf(buf, _("reading indirect blocks of inode %u"), - pctx.ino); - ehandler_operation(buf); - check_blocks(ctx, &pctx, block_buf); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - break; - } - ctx->stashed_inode = old_stashed_inode; - ctx->stashed_ino = old_stashed_ino; - process_inode_count = 0; -#if 0 - printf("end process inodes\n"); -#endif - ehandler_operation(old_operation); -} - -static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b) -{ - const struct process_inode_block *ib_a = - (const struct process_inode_block *) a; - const struct process_inode_block *ib_b = - (const struct process_inode_block *) b; - int ret; - - ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] - - ib_b->inode.i_block[EXT2_IND_BLOCK]); - if (ret == 0) - ret = ib_a->inode.i_file_acl - ib_b->inode.i_file_acl; - return ret; -} - -/* - * Mark an inode as being bad in some what - */ -static void mark_inode_bad(e2fsck_t ctx, ino_t ino) -{ - struct problem_context pctx; - - if (!ctx->inode_bad_map) { - clear_problem_context(&pctx); - - pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs, - _("bad inode map"), &ctx->inode_bad_map); - if (pctx.errcode) { - pctx.num = 3; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return; - } - } - ext2fs_mark_inode_bitmap(ctx->inode_bad_map, ino); -} - - -/* - * This procedure will allocate the inode "bb" (badblock) map table - */ -static void alloc_bb_map(e2fsck_t ctx) -{ - struct problem_context pctx; - - clear_problem_context(&pctx); - pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs, - _("inode in bad block map"), - &ctx->inode_bb_map); - if (pctx.errcode) { - pctx.num = 4; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return; - } -} - -/* - * This procedure will allocate the inode imagic table - */ -static void alloc_imagic_map(e2fsck_t ctx) -{ - struct problem_context pctx; - - clear_problem_context(&pctx); - pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs, - _("imagic inode map"), - &ctx->inode_imagic_map); - if (pctx.errcode) { - pctx.num = 5; - fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return; - } -} - -/* - * Marks a block as in use, setting the dup_map if it's been set - * already. Called by process_block and process_bad_block. - * - * WARNING: Assumes checks have already been done to make sure block - * is valid. This is true in both process_block and process_bad_block. - */ -static _INLINE_ void mark_block_used(e2fsck_t ctx, blk_t block) -{ - struct problem_context pctx; - - clear_problem_context(&pctx); - - if (ext2fs_fast_test_block_bitmap(ctx->block_found_map, block)) { - if (!ctx->block_dup_map) { - pctx.errcode = ext2fs_allocate_block_bitmap(ctx->fs, - _("multiply claimed block map"), - &ctx->block_dup_map); - if (pctx.errcode) { - pctx.num = 3; - fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, - &pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return; - } - } - ext2fs_fast_mark_block_bitmap(ctx->block_dup_map, block); - } else { - ext2fs_fast_mark_block_bitmap(ctx->block_found_map, block); - } -} - -/* - * Adjust the extended attribute block's reference counts at the end - * of pass 1, either by subtracting out references for EA blocks that - * are still referenced in ctx->refcount, or by adding references for - * EA blocks that had extra references as accounted for in - * ctx->refcount_extra. - */ -static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount, - char *block_buf, int adjust_sign) -{ - struct ext2_ext_attr_header *header; - struct problem_context pctx; - ext2_filsys fs = ctx->fs; - blk_t blk; - __u32 should_be; - int count; - - clear_problem_context(&pctx); - - ea_refcount_intr_begin(refcount); - while (1) { - if ((blk = ea_refcount_intr_next(refcount, &count)) == 0) - break; - pctx.blk = blk; - pctx.errcode = ext2fs_read_ext_attr(fs, blk, block_buf); - if (pctx.errcode) { - fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx); - return; - } - header = (struct ext2_ext_attr_header *) block_buf; - pctx.blkcount = header->h_refcount; - should_be = header->h_refcount + adjust_sign * count; - pctx.num = should_be; - if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) { - header->h_refcount = should_be; - pctx.errcode = ext2fs_write_ext_attr(fs, blk, - block_buf); - if (pctx.errcode) { - fix_problem(ctx, PR_1_EXTATTR_WRITE, &pctx); - continue; - } - } - } -} - -/* - * Handle processing the extended attribute blocks - */ -static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx, - char *block_buf) -{ - ext2_filsys fs = ctx->fs; - ext2_ino_t ino = pctx->ino; - struct ext2_inode *inode = pctx->inode; - blk_t blk; - char * end; - struct ext2_ext_attr_header *header; - struct ext2_ext_attr_entry *entry; - int count; - region_t region; - - blk = inode->i_file_acl; - if (blk == 0) - return 0; - - /* - * If the Extended attribute flag isn't set, then a non-zero - * file acl means that the inode is corrupted. - * - * Or if the extended attribute block is an invalid block, - * then the inode is also corrupted. - */ - if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) || - (blk < fs->super->s_first_data_block) || - (blk >= fs->super->s_blocks_count)) { - mark_inode_bad(ctx, ino); - return 0; - } - - /* If ea bitmap hasn't been allocated, create it */ - if (!ctx->block_ea_map) { - pctx->errcode = ext2fs_allocate_block_bitmap(fs, - _("ext attr block map"), - &ctx->block_ea_map); - if (pctx->errcode) { - pctx->num = 2; - fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx); - ctx->flags |= E2F_FLAG_ABORT; - return 0; - } - } - - /* Create the EA refcount structure if necessary */ - if (!ctx->refcount) { - pctx->errcode = ea_refcount_create(0, &ctx->refcount); - if (pctx->errcode) { - pctx->num = 1; - fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx); - ctx->flags |= E2F_FLAG_ABORT; - return 0; - } - } - -#if 0 - /* Debugging text */ - printf("Inode %u has EA block %u\n", ino, blk); -#endif - - /* Have we seen this EA block before? */ - if (ext2fs_fast_test_block_bitmap(ctx->block_ea_map, blk)) { - if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0) - return 1; - /* Ooops, this EA was referenced more than it stated */ - if (!ctx->refcount_extra) { - pctx->errcode = ea_refcount_create(0, - &ctx->refcount_extra); - if (pctx->errcode) { - pctx->num = 2; - fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx); - ctx->flags |= E2F_FLAG_ABORT; - return 0; - } - } - ea_refcount_increment(ctx->refcount_extra, blk, 0); - return 1; - } - - /* - * OK, we haven't seen this EA block yet. So we need to - * validate it - */ - pctx->blk = blk; - pctx->errcode = ext2fs_read_ext_attr(fs, blk, block_buf); - if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) - goto clear_extattr; - header = (struct ext2_ext_attr_header *) block_buf; - pctx->blk = inode->i_file_acl; - if (((ctx->ext_attr_ver == 1) && - (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) || - ((ctx->ext_attr_ver == 2) && - (header->h_magic != EXT2_EXT_ATTR_MAGIC))) { - if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx)) - goto clear_extattr; - } - - if (header->h_blocks != 1) { - if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx)) - goto clear_extattr; - } - - region = region_create(0, fs->blocksize); - if (!region) { - fix_problem(ctx, PR_1_EA_ALLOC_REGION, pctx); - ctx->flags |= E2F_FLAG_ABORT; - return 0; - } - if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) { - if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) - goto clear_extattr; - } - - entry = (struct ext2_ext_attr_entry *)(header+1); - end = block_buf + fs->blocksize; - while ((char *)entry < end && *(__u32 *)entry) { - if (region_allocate(region, (char *)entry - (char *)header, - EXT2_EXT_ATTR_LEN(entry->e_name_len))) { - if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) - goto clear_extattr; - } - if ((ctx->ext_attr_ver == 1 && - (entry->e_name_len == 0 || entry->e_name_index != 0)) || - (ctx->ext_attr_ver == 2 && - entry->e_name_index == 0)) { - if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx)) - goto clear_extattr; - } - if (entry->e_value_block != 0) { - if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx)) - goto clear_extattr; - } - if (entry->e_value_size && - region_allocate(region, entry->e_value_offs, - EXT2_EXT_ATTR_SIZE(entry->e_value_size))) { - if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) - goto clear_extattr; - } - entry = EXT2_EXT_ATTR_NEXT(entry); - } - if (region_allocate(region, (char *)entry - (char *)header, 4)) { - if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx)) - goto clear_extattr; - } - region_free(region); - - count = header->h_refcount - 1; - if (count) - ea_refcount_store(ctx->refcount, blk, count); - mark_block_used(ctx, blk); - ext2fs_fast_mark_block_bitmap(ctx->block_ea_map, blk); - - return 1; - -clear_extattr: - inode->i_file_acl = 0; - e2fsck_write_inode(ctx, ino, inode, "check_ext_attr"); - return 0; -} - -/* Returns 1 if bad htree, 0 if OK */ -static int handle_htree(e2fsck_t ctx, struct problem_context *pctx, - ext2_ino_t ino EXT2FS_ATTR((unused)), - struct ext2_inode *inode, - char *block_buf) -{ - struct ext2_dx_root_info *root; - ext2_filsys fs = ctx->fs; - errcode_t retval; - blk_t blk; - - if ((!LINUX_S_ISDIR(inode->i_mode) && - fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) || - (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) && - fix_problem(ctx, PR_1_HTREE_SET, pctx))) - return 1; - - blk = inode->i_block[0]; - if (((blk == 0) || - (blk < fs->super->s_first_data_block) || - (blk >= fs->super->s_blocks_count)) && - fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) - return 1; - - retval = io_channel_read_blk(fs->io, blk, 1, block_buf); - if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) - return 1; - - /* XXX should check that beginning matches a directory */ - root = (struct ext2_dx_root_info *) (block_buf + 24); - - if ((root->reserved_zero || root->info_length < 8) && - fix_problem(ctx, PR_1_HTREE_BADROOT, pctx)) - return 1; - - pctx->num = root->hash_version; - if ((root->hash_version != EXT2_HASH_LEGACY) && - (root->hash_version != EXT2_HASH_HALF_MD4) && - (root->hash_version != EXT2_HASH_TEA) && - fix_problem(ctx, PR_1_HTREE_HASHV, pctx)) - return 1; - - if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) && - fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx)) - return 1; - - pctx->num = root->indirect_levels; - if ((root->indirect_levels > 1) && - fix_problem(ctx, PR_1_HTREE_DEPTH, pctx)) - return 1; - - return 0; -} - -/* - * This subroutine is called on each inode to account for all of the - * blocks used by that inode. - */ -static void check_blocks(e2fsck_t ctx, struct problem_context *pctx, - char *block_buf) -{ - ext2_filsys fs = ctx->fs; - struct process_block_struct pb; - ext2_ino_t ino = pctx->ino; - struct ext2_inode *inode = pctx->inode; - int bad_size = 0; - int dirty_inode = 0; - __u64 size; - - pb.ino = ino; - pb.num_blocks = 0; - pb.last_block = -1; - pb.num_illegal_blocks = 0; - pb.suppress = 0; pb.clear = 0; - pb.fragmented = 0; - pb.compressed = 0; - pb.previous_block = 0; - pb.is_dir = LINUX_S_ISDIR(inode->i_mode); - pb.is_reg = LINUX_S_ISREG(inode->i_mode); - pb.max_blocks = 1 << (31 - fs->super->s_log_block_size); - pb.inode = inode; - pb.pctx = pctx; - pb.ctx = ctx; - pctx->ino = ino; - pctx->errcode = 0; - - if (inode->i_flags & EXT2_COMPRBLK_FL) { - if (fs->super->s_feature_incompat & - EXT2_FEATURE_INCOMPAT_COMPRESSION) - pb.compressed = 1; - else { - if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) { - inode->i_flags &= ~EXT2_COMPRBLK_FL; - dirty_inode++; - } - } - } - - if (inode->i_file_acl && check_ext_attr(ctx, pctx, block_buf)) - pb.num_blocks++; - - if (ext2fs_inode_has_valid_blocks(inode)) - pctx->errcode = ext2fs_block_iterate2(fs, ino, - pb.is_dir ? BLOCK_FLAG_HOLE : 0, - block_buf, process_block, &pb); - end_problem_latch(ctx, PR_LATCH_BLOCK); - end_problem_latch(ctx, PR_LATCH_TOOBIG); - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - goto out; - if (pctx->errcode) - fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx); - - if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) - ctx->fs_fragmented++; - - if (pb.clear) { - inode->i_links_count = 0; - ext2fs_icount_store(ctx->inode_link_info, ino, 0); - inode->i_dtime = time(0); - dirty_inode++; - ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino); - ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino); - ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino); - /* - * The inode was probably partially accounted for - * before processing was aborted, so we need to - * restart the pass 1 scan. - */ - ctx->flags |= E2F_FLAG_RESTART; - goto out; - } - - if (inode->i_flags & EXT2_INDEX_FL) { - if (handle_htree(ctx, pctx, ino, inode, block_buf)) { - inode->i_flags &= ~EXT2_INDEX_FL; - dirty_inode++; - } else { -#ifdef ENABLE_HTREE - e2fsck_add_dx_dir(ctx, ino, pb.last_block+1); -#endif - } - } - if (ctx->dirs_to_hash && pb.is_dir && - !(inode->i_flags & EXT2_INDEX_FL) && - ((inode->i_size / fs->blocksize) >= 3)) - ext2fs_u32_list_add(ctx->dirs_to_hash, ino); - - if (!pb.num_blocks && pb.is_dir) { - if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) { - inode->i_links_count = 0; - ext2fs_icount_store(ctx->inode_link_info, ino, 0); - inode->i_dtime = time(0); - dirty_inode++; - ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino); - ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino); - ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino); - ctx->fs_directory_count--; - goto out; - } - } - - pb.num_blocks *= (fs->blocksize / 512); -#if 0 - printf("inode %u, i_size = %lu, last_block = %lld, i_blocks=%lu, num_blocks = %lu\n", - ino, inode->i_size, pb.last_block, inode->i_blocks, - pb.num_blocks); -#endif - if (pb.is_dir) { - int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super); - if (nblock > (pb.last_block + 1)) - bad_size = 1; - else if (nblock < (pb.last_block + 1)) { - if (((pb.last_block + 1) - nblock) > - fs->super->s_prealloc_dir_blocks) - bad_size = 2; - } - } else { - size = EXT2_I_SIZE(inode); - if ((pb.last_block >= 0) && - (size < (__u64) pb.last_block * fs->blocksize)) - bad_size = 3; - else if (size > ext2_max_sizes[fs->super->s_log_block_size]) - bad_size = 4; - } - /* i_size for symlinks is checked elsewhere */ - if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) { - pctx->num = (pb.last_block+1) * fs->blocksize; - if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) { - inode->i_size = pctx->num; - if (!LINUX_S_ISDIR(inode->i_mode)) - inode->i_size_high = pctx->num >> 32; - dirty_inode++; - } - pctx->num = 0; - } - if (LINUX_S_ISREG(inode->i_mode) && - (inode->i_size_high || inode->i_size & 0x80000000UL)) - ctx->large_files++; - if (pb.num_blocks != inode->i_blocks) { - pctx->num = pb.num_blocks; - if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) { - inode->i_blocks = pb.num_blocks; - dirty_inode++; - } - pctx->num = 0; - } -out: - if (dirty_inode) - e2fsck_write_inode(ctx, ino, inode, "check_blocks"); -} - -#if 0 -/* - * Helper function called by process block when an illegal block is - * found. It returns a description about why the block is illegal - */ -static char *describe_illegal_block(ext2_filsys fs, blk_t block) -{ - blk_t super; - int i; - static char problem[80]; - - super = fs->super->s_first_data_block; - strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block"); - if (block < super) { - sprintf(problem, "< FIRSTBLOCK (%u)", super); - return(problem); - } else if (block >= fs->super->s_blocks_count) { - sprintf(problem, "> BLOCKS (%u)", fs->super->s_blocks_count); - return(problem); - } - for (i = 0; i < fs->group_desc_count; i++) { - if (block == super) { - sprintf(problem, "is the superblock in group %d", i); - break; - } - if (block > super && - block <= (super + fs->desc_blocks)) { - sprintf(problem, "is in the group descriptors " - "of group %d", i); - break; - } - if (block == fs->group_desc[i].bg_block_bitmap) { - sprintf(problem, "is the block bitmap of group %d", i); - break; - } - if (block == fs->group_desc[i].bg_inode_bitmap) { - sprintf(problem, "is the inode bitmap of group %d", i); - break; - } - if (block >= fs->group_desc[i].bg_inode_table && - (block < fs->group_desc[i].bg_inode_table - + fs->inode_blocks_per_group)) { - sprintf(problem, "is in the inode table of group %d", - i); - break; - } - super += fs->super->s_blocks_per_group; - } - return(problem); -} -#endif - -/* - * This is a helper function for check_blocks(). - */ -static int process_block(ext2_filsys fs, - blk_t *block_nr, - e2_blkcnt_t blockcnt, - blk_t ref_block EXT2FS_ATTR((unused)), - int ref_offset EXT2FS_ATTR((unused)), - void *priv_data) -{ - struct process_block_struct *p; - struct problem_context *pctx; - blk_t blk = *block_nr; - int ret_code = 0; - int problem = 0; - e2fsck_t ctx; - - p = (struct process_block_struct *) priv_data; - pctx = p->pctx; - ctx = p->ctx; - - if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) { - /* todo: Check that the comprblk_fl is high, that the - blkaddr pattern looks right (all non-holes up to - first EXT2FS_COMPRESSED_BLKADDR, then all - EXT2FS_COMPRESSED_BLKADDR up to end of cluster), - that the feature_incompat bit is high, and that the - inode is a regular file. If we're doing a "full - check" (a concept introduced to e2fsck by e2compr, - meaning that we look at data blocks as well as - metadata) then call some library routine that - checks the compressed data. I'll have to think - about this, because one particularly important - problem to be able to fix is to recalculate the - cluster size if necessary. I think that perhaps - we'd better do most/all e2compr-specific checks - separately, after the non-e2compr checks. If not - doing a full check, it may be useful to test that - the personality is linux; e.g. if it isn't then - perhaps this really is just an illegal block. */ - return 0; - } - - if (blk == 0) { - if (p->is_dir == 0) { - /* - * Should never happen, since only directories - * get called with BLOCK_FLAG_HOLE - */ -#if DEBUG_E2FSCK - printf("process_block() called with blk == 0, " - "blockcnt=%d, inode %lu???\n", - blockcnt, p->ino); -#endif - return 0; - } - if (blockcnt < 0) - return 0; - if (blockcnt * fs->blocksize < p->inode->i_size) { -#if 0 - printf("Missing block (#%d) in directory inode %lu!\n", - blockcnt, p->ino); -#endif - goto mark_dir; - } - return 0; - } - -#if 0 - printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk, - blockcnt); -#endif - - /* - * Simplistic fragmentation check. We merely require that the - * file be contiguous. (Which can never be true for really - * big files that are greater than a block group.) - */ - if (!HOLE_BLKADDR(p->previous_block)) { - if (p->previous_block+1 != blk) - p->fragmented = 1; - } - p->previous_block = blk; - - if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size))) - problem = PR_1_TOOBIG_DIR; - if (p->is_reg && p->num_blocks+1 >= p->max_blocks) - problem = PR_1_TOOBIG_REG; - if (!p->is_dir && !p->is_reg && blockcnt > 0) - problem = PR_1_TOOBIG_SYMLINK; - - if (blk < fs->super->s_first_data_block || - blk >= fs->super->s_blocks_count) - problem = PR_1_ILLEGAL_BLOCK_NUM; - - if (problem) { - p->num_illegal_blocks++; - if (!p->suppress && (p->num_illegal_blocks % 12) == 0) { - if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) { - p->clear = 1; - return BLOCK_ABORT; - } - if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) { - p->suppress = 1; - set_latch_flags(PR_LATCH_BLOCK, - PRL_SUPPRESS, 0); - } - } - pctx->blk = blk; - pctx->blkcount = blockcnt; - if (fix_problem(ctx, problem, pctx)) { - blk = *block_nr = 0; - ret_code = BLOCK_CHANGED; - goto mark_dir; - } else - return 0; - } - - if (p->ino == EXT2_RESIZE_INO) { - /* - * The resize inode has already be sanity checked - * during pass #0 (the superblock checks). All we - * have to do is mark the double indirect block as - * being in use; all of the other blocks are handled - * by mark_table_blocks()). - */ - if (blockcnt == BLOCK_COUNT_DIND) - mark_block_used(ctx, blk); - } else - mark_block_used(ctx, blk); - p->num_blocks++; - if (blockcnt >= 0) - p->last_block = blockcnt; -mark_dir: - if (p->is_dir && (blockcnt >= 0)) { - pctx->errcode = ext2fs_add_dir_block(fs->dblist, p->ino, - blk, blockcnt); - if (pctx->errcode) { - pctx->blk = blk; - pctx->num = blockcnt; - fix_problem(ctx, PR_1_ADD_DBLOCK, pctx); - /* Should never get here */ - ctx->flags |= E2F_FLAG_ABORT; - return BLOCK_ABORT; - } - } - return ret_code; -} - -static int process_bad_block(ext2_filsys fs, - blk_t *block_nr, - e2_blkcnt_t blockcnt, - blk_t ref_block EXT2FS_ATTR((unused)), - int ref_offset EXT2FS_ATTR((unused)), - void *priv_data) -{ - struct process_block_struct *p; - blk_t blk = *block_nr; - blk_t first_block; - dgrp_t i; - struct problem_context *pctx; - e2fsck_t ctx; - - /* - * Note: This function processes blocks for the bad blocks - * inode, which is never compressed. So we don't use HOLE_BLKADDR(). - */ - - if (!blk) - return 0; - - p = (struct process_block_struct *) priv_data; - ctx = p->ctx; - pctx = p->pctx; - - pctx->ino = EXT2_BAD_INO; - pctx->blk = blk; - pctx->blkcount = blockcnt; - - if ((blk < fs->super->s_first_data_block) || - (blk >= fs->super->s_blocks_count)) { - if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } else - return 0; - } - - if (blockcnt < 0) { - if (ext2fs_test_block_bitmap(p->fs_meta_blocks, blk)) { - p->bbcheck = 1; - if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } - } else if (ext2fs_test_block_bitmap(ctx->block_found_map, - blk)) { - p->bbcheck = 1; - if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, - pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return BLOCK_ABORT; - } else - mark_block_used(ctx, blk); - return 0; - } -#if 0 - printf ("DEBUG: Marking %u as bad.\n", blk); -#endif - ctx->fs_badblocks_count++; - /* - * If the block is not used, then mark it as used and return. - * If it is already marked as found, this must mean that - * there's an overlap between the filesystem table blocks - * (bitmaps and inode table) and the bad block list. - */ - if (!ext2fs_test_block_bitmap(ctx->block_found_map, blk)) { - ext2fs_mark_block_bitmap(ctx->block_found_map, blk); - return 0; - } - /* - * Try to find the where the filesystem block was used... - */ - first_block = fs->super->s_first_data_block; - - for (i = 0; i < fs->group_desc_count; i++ ) { - pctx->group = i; - pctx->blk = blk; - if (!ext2fs_bg_has_super(fs, i)) - goto skip_super; - if (blk == first_block) { - if (i == 0) { - if (fix_problem(ctx, - PR_1_BAD_PRIMARY_SUPERBLOCK, - pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } - return 0; - } - fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx); - return 0; - } - if ((blk > first_block) && - (blk <= first_block + fs->desc_blocks)) { - if (i == 0) { - pctx->blk = *block_nr; - if (fix_problem(ctx, - PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } - return 0; - } - fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx); - return 0; - } - skip_super: - if (blk == fs->group_desc[i].bg_block_bitmap) { - if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) { - ctx->invalid_block_bitmap_flag[i]++; - ctx->invalid_bitmaps++; - } - return 0; - } - if (blk == fs->group_desc[i].bg_inode_bitmap) { - if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) { - ctx->invalid_inode_bitmap_flag[i]++; - ctx->invalid_bitmaps++; - } - return 0; - } - if ((blk >= fs->group_desc[i].bg_inode_table) && - (blk < (fs->group_desc[i].bg_inode_table + - fs->inode_blocks_per_group))) { - /* - * If there are bad blocks in the inode table, - * the inode scan code will try to do - * something reasonable automatically. - */ - return 0; - } - first_block += fs->super->s_blocks_per_group; - } - /* - * If we've gotten to this point, then the only - * possibility is that the bad block inode meta data - * is using a bad block. - */ - if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) || - (blk == p->inode->i_block[EXT2_DIND_BLOCK]) || - (blk == p->inode->i_block[EXT2_TIND_BLOCK])) { - p->bbcheck = 1; - if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) { - *block_nr = 0; - return BLOCK_CHANGED; - } - if (ctx->flags & E2F_FLAG_SIGNAL_MASK) - return BLOCK_ABORT; - return 0; - } - - pctx->group = -1; - - /* Warn user that the block wasn't claimed */ - fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx); - - return 0; -} - -static void new_table_block(e2fsck_t ctx, blk_t first_block, int group, - const char *name, int num, blk_t *new_block) -{ - ext2_filsys fs = ctx->fs; - blk_t old_block = *new_block; - int i; - char *buf; - struct problem_context pctx; - - clear_problem_context(&pctx); - - pctx.group = group; - pctx.blk = old_block; - pctx.str = name; - - pctx.errcode = ext2fs_get_free_blocks(fs, first_block, - first_block + fs->super->s_blocks_per_group, - num, ctx->block_found_map, new_block); - if (pctx.errcode) { - pctx.num = num; - fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx); - ext2fs_unmark_valid(fs); - return; - } - pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf); - if (pctx.errcode) { - fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx); - ext2fs_unmark_valid(fs); - return; - } - ext2fs_mark_super_dirty(fs); - fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; - pctx.blk2 = *new_block; - fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO : - PR_1_RELOC_TO), &pctx); - pctx.blk2 = 0; - for (i = 0; i < num; i++) { - pctx.blk = i; - ext2fs_mark_block_bitmap(ctx->block_found_map, (*new_block)+i); - if (old_block) { - pctx.errcode = io_channel_read_blk(fs->io, - old_block + i, 1, buf); - if (pctx.errcode) - fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx); - } else - memset(buf, 0, fs->blocksize); - - pctx.blk = (*new_block) + i; - pctx.errcode = io_channel_write_blk(fs->io, pctx.blk, - 1, buf); - if (pctx.errcode) - fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx); - } - ext2fs_free_mem(&buf); -} - -/* - * This routine gets called at the end of pass 1 if bad blocks are - * detected in the superblock, group descriptors, inode_bitmaps, or - * block bitmaps. At this point, all of the blocks have been mapped - * out, so we can try to allocate new block(s) to replace the bad - * blocks. - */ -static void handle_fs_bad_blocks(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - dgrp_t i; - int first_block = fs->super->s_first_data_block; - - for (i = 0; i < fs->group_desc_count; i++) { - if (ctx->invalid_block_bitmap_flag[i]) { - new_table_block(ctx, first_block, i, _("block bitmap"), - 1, &fs->group_desc[i].bg_block_bitmap); - } - if (ctx->invalid_inode_bitmap_flag[i]) { - new_table_block(ctx, first_block, i, _("inode bitmap"), - 1, &fs->group_desc[i].bg_inode_bitmap); - } - if (ctx->invalid_inode_table_flag[i]) { - new_table_block(ctx, first_block, i, _("inode table"), - fs->inode_blocks_per_group, - &fs->group_desc[i].bg_inode_table); - ctx->flags |= E2F_FLAG_RESTART; - } - first_block += fs->super->s_blocks_per_group; - } - ctx->invalid_bitmaps = 0; -} - -/* - * This routine marks all blocks which are used by the superblock, - * group descriptors, inode bitmaps, and block bitmaps. - */ -static void mark_table_blocks(e2fsck_t ctx) -{ - ext2_filsys fs = ctx->fs; - blk_t block, b; - dgrp_t i; - int j; - struct problem_context pctx; - - clear_problem_context(&pctx); - - block = fs->super->s_first_data_block; - for (i = 0; i < fs->group_desc_count; i++) { - pctx.group = i; - - ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map); - - /* - * Mark the blocks used for the inode table - */ - if (fs->group_desc[i].bg_inode_table) { - for (j = 0, b = fs->group_desc[i].bg_inode_table; - j < fs->inode_blocks_per_group; - j++, b++) { - if (ext2fs_test_block_bitmap(ctx->block_found_map, - b)) { - pctx.blk = b; - if (fix_problem(ctx, - PR_1_ITABLE_CONFLICT, &pctx)) { - ctx->invalid_inode_table_flag[i]++; - ctx->invalid_bitmaps++; - } - } else { - ext2fs_mark_block_bitmap(ctx->block_found_map, - b); - } - } - } - - /* - * Mark block used for the block bitmap - */ - if (fs->group_desc[i].bg_block_bitmap) { - if (ext2fs_test_block_bitmap(ctx->block_found_map, - fs->group_desc[i].bg_block_bitmap)) { - pctx.blk = fs->group_desc[i].bg_block_bitmap; - if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) { - ctx->invalid_block_bitmap_flag[i]++; - ctx->invalid_bitmaps++; - } - } else { - ext2fs_mark_block_bitmap(ctx->block_found_map, - fs->group_desc[i].bg_block_bitmap); - } - - } - /* - * Mark block used for the inode bitmap - */ - if (fs->group_desc[i].bg_inode_bitmap) { - if (ext2fs_test_block_bitmap(ctx->block_found_map, - fs->group_desc[i].bg_inode_bitmap)) { - pctx.blk = fs->group_desc[i].bg_inode_bitmap; - if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) { - ctx->invalid_inode_bitmap_flag[i]++; - ctx->invalid_bitmaps++; - } - } else { - ext2fs_mark_block_bitmap(ctx->block_found_map, - fs->group_desc[i].bg_inode_bitmap); - } - } - block += fs->super->s_blocks_per_group; - } -} - -/* - * Thes subroutines short circuits ext2fs_get_blocks and - * ext2fs_check_directory; we use them since we already have the inode - * structure, so there's no point in letting the ext2fs library read - * the inode again. - */ -static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino, - blk_t *blocks) -{ - e2fsck_t ctx = (e2fsck_t) fs->priv_data; - int i; - - if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) - return EXT2_ET_CALLBACK_NOTHANDLED; - - for (i=0; i < EXT2_N_BLOCKS; i++) - blocks[i] = ctx->stashed_inode->i_block[i]; - return 0; -} - -static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino, - struct ext2_inode *inode) -{ - e2fsck_t ctx = (e2fsck_t) fs->priv_data; - - if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) - return EXT2_ET_CALLBACK_NOTHANDLED; - *inode = *ctx->stashed_inode; - return 0; -} - -static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino, - struct ext2_inode *inode) -{ - e2fsck_t ctx = (e2fsck_t) fs->priv_data; - - if ((ino == ctx->stashed_ino) && ctx->stashed_inode) - *ctx->stashed_inode = *inode; - return EXT2_ET_CALLBACK_NOTHANDLED; -} - -static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino) -{ - e2fsck_t ctx = (e2fsck_t) fs->priv_data; - - if ((ino != ctx->stashed_ino) || !ctx->stashed_inode) - return EXT2_ET_CALLBACK_NOTHANDLED; - - if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode)) - return EXT2_ET_NO_DIRECTORY; - return 0; -} - -void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool) -{ - ext2_filsys fs = ctx->fs; - - if (bool) { - fs->get_blocks = pass1_get_blocks; - fs->check_directory = pass1_check_directory; - fs->read_inode = pass1_read_inode; - fs->write_inode = pass1_write_inode; - ctx->stashed_ino = 0; - } else { - fs->get_blocks = 0; - fs->check_directory = 0; - fs->read_inode = 0; - fs->write_inode = 0; - } -} |