Exemplo n.º 1
0
void e2fsck_pass5(e2fsck_t ctx)
{
#ifdef RESOURCE_TRACK
	struct resource_track	rtrack;
#endif
	struct problem_context	pctx;
	
#ifdef MTRACE
	mtrace_print("Pass 5");
#endif

#ifdef RESOURCE_TRACK
	init_resource_track(&rtrack);
#endif
	
	clear_problem_context(&pctx);

	if (!(ctx->options & E2F_OPT_PREEN))
		fix_problem(ctx, PR_5_PASS_HEADER, &pctx);

	if (ctx->progress)
		if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2))
			return;

	e2fsck_read_bitmaps(ctx);

	check_block_bitmaps(ctx);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
		return;
	check_inode_bitmaps(ctx);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
		return;
	check_inode_end(ctx);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
		return;
	check_block_end(ctx);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
		return;

	ext2fs_free_inode_bitmap(ctx->inode_used_map);
	ctx->inode_used_map = 0;
	ext2fs_free_inode_bitmap(ctx->inode_dir_map);
	ctx->inode_dir_map = 0;
	ext2fs_free_block_bitmap(ctx->block_found_map);
	ctx->block_found_map = 0;

#ifdef RESOURCE_TRACK
	if (ctx->options & E2F_OPT_TIME2) {
		e2fsck_clear_progbar(ctx);
		print_resource_track(_("Pass 5"), &rtrack);
	}
#endif
}
Exemplo n.º 2
0
void ext2fs_free_icount(ext2_icount_t icount)
{
	if (!icount)
		return;

	icount->magic = 0;
	if (icount->list)
		ext2fs_free_mem(&icount->list);
	if (icount->single)
		ext2fs_free_inode_bitmap(icount->single);
	if (icount->multiple)
		ext2fs_free_inode_bitmap(icount->multiple);
	ext2fs_free_mem(&icount);
}
Exemplo n.º 3
0
void ext2fs_free(ext2_filsys fs)
{
	if (!fs || (fs->magic != EXT2_ET_MAGIC_EXT2FS_FILSYS))
		return;
	if (fs->image_io != fs->io) {
		if (fs->image_io)
			io_channel_close(fs->image_io);
	}
	if (fs->io) {
		io_channel_close(fs->io);
	}
	ext2fs_free_mem(&fs->device_name);
	ext2fs_free_mem(&fs->super);
	ext2fs_free_mem(&fs->orig_super);
	ext2fs_free_mem(&fs->group_desc);
	ext2fs_free_block_bitmap(fs->block_map);
	ext2fs_free_inode_bitmap(fs->inode_map);

	ext2fs_badblocks_list_free(fs->badblocks);
	fs->badblocks = 0;

	ext2fs_free_dblist(fs->dblist);

	if (fs->icache)
		ext2fs_free_inode_cache(fs->icache);

	fs->magic = 0;

	ext2fs_free_mem(&fs);
}
Exemplo n.º 4
0
void ext2fs_free_icount(ext2_icount_t icount)
{
	if (!icount)
		return;

	icount->magic = 0;
	if (icount->list)
		ext2fs_free_mem(&icount->list);
	if (icount->single)
		ext2fs_free_inode_bitmap(icount->single);
	if (icount->multiple)
		ext2fs_free_inode_bitmap(icount->multiple);
	if (icount->tdb)
		tdb_close(icount->tdb);
	if (icount->tdb_fn) {
		unlink(icount->tdb_fn);
		free(icount->tdb_fn);
	}

	ext2fs_free_mem(&icount);
}
Exemplo n.º 5
0
void free_empty_dirblock(empty_dir_info edi)
{
	if (!edi)
		return;
	if (edi->empty_dblist)
		ext2fs_free_dblist(edi->empty_dblist);
	if (edi->empty_dir_blocks)
		ext2fs_free_block_bitmap(edi->empty_dir_blocks);
	if (edi->dir_map)
		ext2fs_free_inode_bitmap(edi->dir_map);

	memset(edi, 0, sizeof(struct empty_dir_info_struct));
	free(edi);
}
Exemplo n.º 6
0
static void setup_filesystem(const char *name,
			     unsigned int blocks, unsigned int inodes,
			     unsigned int type, int flags)
{
	struct ext2_super_block param;
	errcode_t retval;

	memset(&param, 0, sizeof(param));
	ext2fs_blocks_count_set(&param, blocks);
	param.s_inodes_count = inodes;

	retval = ext2fs_initialize("test fs", flags, &param,
				   test_io_manager, &test_fs);

	if (retval) {
		com_err(name, retval, "while initializing filesystem");
		return;
	}
	test_fs->default_bitmap_type = type;
	ext2fs_free_block_bitmap(test_fs->block_map);
	test_fs->block_map = 0;
	ext2fs_free_inode_bitmap(test_fs->inode_map);
	test_fs->inode_map = 0;
	retval = ext2fs_allocate_block_bitmap(test_fs, "block bitmap",
					      &test_fs->block_map);
	if (retval) {
		com_err(name, retval, "while allocating block bitmap");
		goto errout;
	}
	retval = ext2fs_allocate_inode_bitmap(test_fs, "inode bitmap",
					      &test_fs->inode_map);
	if (retval) {
		com_err(name, retval, "while allocating inode bitmap");
		goto errout;
	}
	return;

errout:
	ext2fs_close_free(&test_fs);
}
Exemplo n.º 7
0
static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
{
	dgrp_t i;
	char *block_bitmap = 0, *inode_bitmap = 0;
	char *buf;
	errcode_t retval;
	int block_nbytes = (int) EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
	int inode_nbytes = (int) EXT2_INODES_PER_GROUP(fs->super) / 8;
	int lazy_flag = 0;
	blk_t	blk;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	fs->write_bitmaps = ext2fs_write_bitmaps;

	if (EXT2_HAS_COMPAT_FEATURE(fs->super, 
				    EXT2_FEATURE_COMPAT_LAZY_BG))
		lazy_flag = 1;

	retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
	if (retval)
		return retval;
	if (do_block) {
		if (fs->block_map)
			ext2fs_free_block_bitmap(fs->block_map);
		sprintf(buf, "block bitmap for %s", fs->device_name);
		retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
		if (retval)
			goto cleanup;
		block_bitmap = fs->block_map->bitmap;
	}
	if (do_inode) {
		if (fs->inode_map)
			ext2fs_free_inode_bitmap(fs->inode_map);
		sprintf(buf, "inode bitmap for %s", fs->device_name);
		retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
		if (retval)
			goto cleanup;
		inode_bitmap = fs->inode_map->bitmap;
	}
	ext2fs_free_mem(&buf);

	if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
		if (inode_bitmap) {
			blk = (fs->image_header->offset_inodemap /
			       fs->blocksize);
			retval = io_channel_read_blk(fs->image_io, blk,
			     -(inode_nbytes * fs->group_desc_count),
			     inode_bitmap);
			if (retval)
				goto cleanup;
		}
		if (block_bitmap) {
			blk = (fs->image_header->offset_blockmap /
			       fs->blocksize);
			retval = io_channel_read_blk(fs->image_io, blk, 
			     -(block_nbytes * fs->group_desc_count),
			     block_bitmap);
			if (retval)
				goto cleanup;
		}
		return 0;
	}

	for (i = 0; i < fs->group_desc_count; i++) {
		if (block_bitmap) {
			blk = fs->group_desc[i].bg_block_bitmap;
			if (lazy_flag && fs->group_desc[i].bg_flags &
			    EXT2_BG_BLOCK_UNINIT)
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk(fs->io, blk,
					     -block_nbytes, block_bitmap);
				if (retval) {
					retval = EXT2_ET_BLOCK_BITMAP_READ;
					goto cleanup;
				}
#ifdef EXT2_BIG_ENDIAN_BITMAPS
				if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
				      (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)))
					ext2fs_swap_bitmap(fs, block_bitmap, block_nbytes);
#endif
			} else
				memset(block_bitmap, 0xff, block_nbytes);
			block_bitmap += block_nbytes;
		}
		if (inode_bitmap) {
			blk = fs->group_desc[i].bg_inode_bitmap;
			if (lazy_flag && fs->group_desc[i].bg_flags &
			    EXT2_BG_INODE_UNINIT)
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk(fs->io, blk,
					     -inode_nbytes, inode_bitmap);
				if (retval) {
					retval = EXT2_ET_INODE_BITMAP_READ;
					goto cleanup;
				}
#ifdef EXT2_BIG_ENDIAN_BITMAPS
				if (!((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
				      (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)))
					ext2fs_swap_bitmap(fs, inode_bitmap, inode_nbytes);
#endif
			} else
				memset(inode_bitmap, 0xff, inode_nbytes);
			inode_bitmap += inode_nbytes;
		}
	}
	return 0;
	
cleanup:
	if (do_block) {
		ext2fs_free_mem(&fs->block_map);
		fs->block_map = 0;
	}
	if (do_inode) {
		ext2fs_free_mem(&fs->inode_map);
		fs->inode_map = 0;
	}
	if (buf)
		ext2fs_free_mem(&buf);
	return retval;
}
Exemplo n.º 8
0
static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
{
	dgrp_t i;
	char *block_bitmap = 0, *inode_bitmap = 0;
	char *buf;
	errcode_t retval;
	int block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
	int inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
	int csum_flag;
	unsigned int	cnt;
	blk64_t	blk;
	blk64_t	blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
	blk64_t   blk_cnt;
	ext2_ino_t ino_itr = 1;
	ext2_ino_t ino_cnt;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	if ((block_nbytes > (int) fs->blocksize) ||
	    (inode_nbytes > (int) fs->blocksize))
		return EXT2_ET_CORRUPT_SUPERBLOCK;

	fs->write_bitmaps = ext2fs_write_bitmaps;

	csum_flag = ext2fs_has_group_desc_csum(fs);

	retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
	if (retval)
		return retval;
	if (do_block) {
		if (fs->block_map)
			ext2fs_free_block_bitmap(fs->block_map);
		strcpy(buf, "block bitmap for ");
		strcat(buf, fs->device_name);
		retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
		if (retval)
			goto cleanup;
		retval = io_channel_alloc_buf(fs->io, 0, &block_bitmap);
		if (retval)
			goto cleanup;
	} else
		block_nbytes = 0;
	if (do_inode) {
		if (fs->inode_map)
			ext2fs_free_inode_bitmap(fs->inode_map);
		strcpy(buf, "inode bitmap for ");
		strcat(buf, fs->device_name);
		retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
		if (retval)
			goto cleanup;
		retval = io_channel_alloc_buf(fs->io, 0, &inode_bitmap);
		if (retval)
			goto cleanup;
	} else
		inode_nbytes = 0;
	ext2fs_free_mem(&buf);

	if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
		blk = (ext2fs_le32_to_cpu(fs->image_header->offset_inodemap) / fs->blocksize);
		ino_cnt = fs->super->s_inodes_count;
		while (inode_bitmap && ino_cnt > 0) {
			retval = io_channel_read_blk64(fs->image_io, blk++,
						     1, inode_bitmap);
			if (retval)
				goto cleanup;
			cnt = fs->blocksize << 3;
			if (cnt > ino_cnt)
				cnt = ino_cnt;
			retval = ext2fs_set_inode_bitmap_range2(fs->inode_map,
					       ino_itr, cnt, inode_bitmap);
			if (retval)
				goto cleanup;
			ino_itr += cnt;
			ino_cnt -= cnt;
		}
		blk = (ext2fs_le32_to_cpu(fs->image_header->offset_blockmap) /
		       fs->blocksize);
		blk_cnt = EXT2_GROUPS_TO_CLUSTERS(fs->super,
						  fs->group_desc_count);
		while (block_bitmap && blk_cnt > 0) {
			retval = io_channel_read_blk64(fs->image_io, blk++,
						     1, block_bitmap);
			if (retval)
				goto cleanup;
			cnt = fs->blocksize << 3;
			if (cnt > blk_cnt)
				cnt = blk_cnt;
			retval = ext2fs_set_block_bitmap_range2(fs->block_map,
				       blk_itr, cnt, block_bitmap);
			if (retval)
				goto cleanup;
			blk_itr += cnt;
			blk_cnt -= cnt;
		}
		goto success_cleanup;
	}

	for (i = 0; i < fs->group_desc_count; i++) {
		if (block_bitmap) {
			blk = ext2fs_block_bitmap_loc(fs, i);
			if (csum_flag &&
			    ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) &&
			    ext2fs_group_desc_csum_verify(fs, i))
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk64(fs->io, blk,
							       1, block_bitmap);
				if (retval) {
					retval = EXT2_ET_BLOCK_BITMAP_READ;
					goto cleanup;
				}
				/* verify block bitmap checksum */
				if (!(fs->flags &
				      EXT2_FLAG_IGNORE_CSUM_ERRORS) &&
				    !ext2fs_block_bitmap_csum_verify(fs, i,
						block_bitmap, block_nbytes)) {
					retval =
					EXT2_ET_BLOCK_BITMAP_CSUM_INVALID;
					goto cleanup;
				}
			} else
				memset(block_bitmap, 0, block_nbytes);
			cnt = block_nbytes << 3;
			retval = ext2fs_set_block_bitmap_range2(fs->block_map,
					       blk_itr, cnt, block_bitmap);
			if (retval)
				goto cleanup;
			blk_itr += block_nbytes << 3;
		}
		if (inode_bitmap) {
			blk = ext2fs_inode_bitmap_loc(fs, i);
			if (csum_flag &&
			    ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) &&
			    ext2fs_group_desc_csum_verify(fs, i))
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk64(fs->io, blk,
							       1, inode_bitmap);
				if (retval) {
					retval = EXT2_ET_INODE_BITMAP_READ;
					goto cleanup;
				}

				/* verify inode bitmap checksum */
				if (!(fs->flags &
				      EXT2_FLAG_IGNORE_CSUM_ERRORS) &&
				    !ext2fs_inode_bitmap_csum_verify(fs, i,
						inode_bitmap, inode_nbytes)) {
					retval =
					EXT2_ET_INODE_BITMAP_CSUM_INVALID;
					goto cleanup;
				}
			} else
				memset(inode_bitmap, 0, inode_nbytes);
			cnt = inode_nbytes << 3;
			retval = ext2fs_set_inode_bitmap_range2(fs->inode_map,
					       ino_itr, cnt, inode_bitmap);
			if (retval)
				goto cleanup;
			ino_itr += inode_nbytes << 3;
		}
	}

	/* Mark group blocks for any BLOCK_UNINIT groups */
	if (do_block) {
		retval = mark_uninit_bg_group_blocks(fs);
		if (retval)
			goto cleanup;
	}

success_cleanup:
	if (inode_bitmap)
		ext2fs_free_mem(&inode_bitmap);
	if (block_bitmap)
		ext2fs_free_mem(&block_bitmap);
	return 0;

cleanup:
	if (do_block) {
		ext2fs_free_mem(&fs->block_map);
		fs->block_map = 0;
	}
	if (do_inode) {
		ext2fs_free_mem(&fs->inode_map);
		fs->inode_map = 0;
	}
	if (inode_bitmap)
		ext2fs_free_mem(&inode_bitmap);
	if (block_bitmap)
		ext2fs_free_mem(&block_bitmap);
	if (buf)
		ext2fs_free_mem(&buf);
	return retval;
}
Exemplo n.º 9
0
void e2fsck_pass3(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	struct dir_info_iter *iter;
#ifdef RESOURCE_TRACK
	struct resource_track	rtrack;
#endif
	struct problem_context	pctx;
	struct dir_info	*dir;
	unsigned long maxdirs, count;

	init_resource_track(&rtrack, ctx->fs->io);
	clear_problem_context(&pctx);

#ifdef MTRACE
	mtrace_print("Pass 3");
#endif

	if (!(ctx->options & E2F_OPT_PREEN))
		fix_problem(ctx, PR_3_PASS_HEADER, &pctx);

	/*
	 * Allocate some bitmaps to do loop detection.
	 */
	pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("inode done bitmap"),
					EXT2FS_BMAP64_AUTODIR,
					"inode_done_map", &inode_done_map);
	if (pctx.errcode) {
		pctx.num = 2;
		fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		goto abort_exit;
	}
	print_resource_track(ctx, _("Peak memory"), &ctx->global_rtrack, NULL);

	check_root(ctx);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
		goto abort_exit;

	ext2fs_mark_inode_bitmap2(inode_done_map, EXT2_ROOT_INO);

	maxdirs = e2fsck_get_num_dirinfo(ctx);
	count = 1;

	if (ctx->progress)
		if ((ctx->progress)(ctx, 3, 0, maxdirs))
			goto abort_exit;

	iter = e2fsck_dir_info_iter_begin(ctx);
	while ((dir = e2fsck_dir_info_iter(ctx, iter)) != 0) {
		if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
			goto abort_exit;
		if (ctx->progress && (ctx->progress)(ctx, 3, count++, maxdirs))
			goto abort_exit;
		if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, dir->ino))
			if (check_directory(ctx, dir->ino, &pctx))
				goto abort_exit;
	}
	e2fsck_dir_info_iter_end(ctx, iter);

	/*
	 * Force the creation of /lost+found if not present
	 */
	if ((ctx->flags & E2F_OPT_READONLY) == 0)
		e2fsck_get_lost_and_found(ctx, 1);

	/*
	 * If there are any directories that need to be indexed or
	 * optimized, do it here.
	 */
	e2fsck_rehash_directories(ctx);

abort_exit:
	e2fsck_free_dir_info(ctx);
	if (inode_loop_detect) {
		ext2fs_free_inode_bitmap(inode_loop_detect);
		inode_loop_detect = 0;
	}
	if (inode_done_map) {
		ext2fs_free_inode_bitmap(inode_done_map);
		inode_done_map = 0;
	}

	print_resource_track(ctx, _("Pass 3"), &rtrack, ctx->fs->io);
}
Exemplo n.º 10
0
void e2fsck_pass2(e2fsck_t ctx)
{
	struct ext2_super_block *sb = ctx->fs->super;
	struct problem_context	pctx;
	ext2_filsys 		fs = ctx->fs;
	char			*buf;
#ifdef RESOURCE_TRACK
	struct resource_track	rtrack;
#endif
	struct check_dir_struct cd;
	struct dx_dir_info	*dx_dir;
	struct dx_dirblock_info	*dx_db, *dx_parent;
	unsigned int		save_type;
	int			b;
	int			i, depth;
	problem_t		code;
	int			bad_dir;

	init_resource_track(&rtrack, ctx->fs->io);
	clear_problem_context(&cd.pctx);

#ifdef MTRACE
	mtrace_print("Pass 2");
#endif

	if (!(ctx->options & E2F_OPT_PREEN))
		fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx);

	e2fsck_setup_tdb_icount(ctx, EXT2_ICOUNT_OPT_INCREMENT,
				&ctx->inode_count);
	if (ctx->inode_count)
		cd.pctx.errcode = 0;
	else {
		e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE,
				       "inode_count", &save_type);
		cd.pctx.errcode = ext2fs_create_icount2(fs,
						EXT2_ICOUNT_OPT_INCREMENT,
						0, ctx->inode_link_info,
						&ctx->inode_count);
		fs->default_bitmap_type = save_type;
	}
	if (cd.pctx.errcode) {
		fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		return;
	}
	buf = (char *) e2fsck_allocate_memory(ctx, 2*fs->blocksize,
					      "directory scan buffer");

	/*
	 * Set up the parent pointer for the root directory, if
	 * present.  (If the root directory is not present, we will
	 * create it in pass 3.)
	 */
	(void) e2fsck_dir_info_set_parent(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO);

	cd.buf = buf;
	cd.ctx = ctx;
	cd.count = 1;
	cd.max = ext2fs_dblist_count2(fs->dblist);

	if (ctx->progress)
		(void) (ctx->progress)(ctx, 2, 0, cd.max);

	if (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX)
		ext2fs_dblist_sort2(fs->dblist, special_dir_block_cmp);

	cd.pctx.errcode = ext2fs_dblist_iterate2(fs->dblist, check_dir_block,
						 &cd);
	if (ctx->flags & E2F_FLAG_SIGNAL_MASK || ctx->flags & E2F_FLAG_RESTART)
		return;

	if (ctx->flags & E2F_FLAG_RESTART_LATER) {
		ctx->flags |= E2F_FLAG_RESTART;
		return;
	}

	if (cd.pctx.errcode) {
		fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		return;
	}

#ifdef ENABLE_HTREE
	for (i=0; (dx_dir = e2fsck_dx_dir_info_iter(ctx, &i)) != 0;) {
		if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
			return;
		if (dx_dir->numblocks == 0)
			continue;
		clear_problem_context(&pctx);
		bad_dir = 0;
		pctx.dir = dx_dir->ino;
		dx_db = dx_dir->dx_block;
		if (dx_db->flags & DX_FLAG_REFERENCED)
			dx_db->flags |= DX_FLAG_DUP_REF;
		else
			dx_db->flags |= DX_FLAG_REFERENCED;
		/*
		 * Find all of the first and last leaf blocks, and
		 * update their parent's min and max hash values
		 */
		for (b=0, dx_db = dx_dir->dx_block;
		     b < dx_dir->numblocks;
		     b++, dx_db++) {
			if ((dx_db->type != DX_DIRBLOCK_LEAF) ||
			    !(dx_db->flags & (DX_FLAG_FIRST | DX_FLAG_LAST)))
				continue;
			dx_parent = &dx_dir->dx_block[dx_db->parent];
			/*
			 * XXX Make sure dx_parent->min_hash > dx_db->min_hash
			 */
			if (dx_db->flags & DX_FLAG_FIRST)
				dx_parent->min_hash = dx_db->min_hash;
			/*
			 * XXX Make sure dx_parent->max_hash < dx_db->max_hash
			 */
			if (dx_db->flags & DX_FLAG_LAST)
				dx_parent->max_hash = dx_db->max_hash;
		}

		for (b=0, dx_db = dx_dir->dx_block;
		     b < dx_dir->numblocks;
		     b++, dx_db++) {
			pctx.blkcount = b;
			pctx.group = dx_db->parent;
			code = 0;
			if (!(dx_db->flags & DX_FLAG_FIRST) &&
			    (dx_db->min_hash < dx_db->node_min_hash)) {
				pctx.blk = dx_db->min_hash;
				pctx.blk2 = dx_db->node_min_hash;
				code = PR_2_HTREE_MIN_HASH;
				fix_problem(ctx, code, &pctx);
				bad_dir++;
			}
			if (dx_db->type == DX_DIRBLOCK_LEAF) {
				depth = htree_depth(dx_dir, dx_db);
				if (depth != dx_dir->depth) {
					pctx.num = dx_dir->depth;
					code = PR_2_HTREE_BAD_DEPTH;
					fix_problem(ctx, code, &pctx);
					bad_dir++;
				}
			}
			/*
			 * This test doesn't apply for the root block
			 * at block #0
			 */
			if (b &&
			    (dx_db->max_hash > dx_db->node_max_hash)) {
				pctx.blk = dx_db->max_hash;
				pctx.blk2 = dx_db->node_max_hash;
				code = PR_2_HTREE_MAX_HASH;
				fix_problem(ctx, code, &pctx);
				bad_dir++;
			}
			if (!(dx_db->flags & DX_FLAG_REFERENCED)) {
				code = PR_2_HTREE_NOTREF;
				fix_problem(ctx, code, &pctx);
				bad_dir++;
			} else if (dx_db->flags & DX_FLAG_DUP_REF) {
				code = PR_2_HTREE_DUPREF;
				fix_problem(ctx, code, &pctx);
				bad_dir++;
			}
		}
		if (bad_dir && fix_problem(ctx, PR_2_HTREE_CLEAR, &pctx)) {
			clear_htree(ctx, dx_dir->ino);
			dx_dir->numblocks = 0;
		}
	}
	e2fsck_free_dx_dir_info(ctx);
#endif
	ext2fs_free_mem(&buf);
	ext2fs_free_dblist(fs->dblist);

	if (ctx->inode_bad_map) {
		ext2fs_free_inode_bitmap(ctx->inode_bad_map);
		ctx->inode_bad_map = 0;
	}
	if (ctx->inode_reg_map) {
		ext2fs_free_inode_bitmap(ctx->inode_reg_map);
		ctx->inode_reg_map = 0;
	}

	clear_problem_context(&pctx);
	if (ctx->large_files) {
		if (!(sb->s_feature_ro_compat &
		      EXT2_FEATURE_RO_COMPAT_LARGE_FILE) &&
		    fix_problem(ctx, PR_2_FEATURE_LARGE_FILES, &pctx)) {
			sb->s_feature_ro_compat |=
				EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
			fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
			ext2fs_mark_super_dirty(fs);
		}
		if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
		    fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
			ext2fs_update_dynamic_rev(fs);
			ext2fs_mark_super_dirty(fs);
		}
	}

	print_resource_track(ctx, _("Pass 2"), &rtrack, fs->io);
}
Exemplo n.º 11
0
void e2fsck_pass2(e2fsck_t ctx)
{
    struct ext2_super_block *sb = ctx->fs->super;
    struct problem_context	pctx;
    ext2_filsys 		fs = ctx->fs;
    char			*buf;
#ifdef RESOURCE_TRACK
    struct resource_track	rtrack;
#endif
    struct dir_info 	*dir;
    struct check_dir_struct cd;

#ifdef RESOURCE_TRACK
    init_resource_track(&rtrack);
#endif

    clear_problem_context(&cd.pctx);

#ifdef MTRACE
    mtrace_print("Pass 2");
#endif

    if (!(ctx->options & E2F_OPT_PREEN))
        fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx);

    cd.pctx.errcode = ext2fs_create_icount2(fs, EXT2_ICOUNT_OPT_INCREMENT,
                                            0, ctx->inode_link_info,
                                            &ctx->inode_count);
    if (cd.pctx.errcode) {
        fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx);
        ctx->flags |= E2F_FLAG_ABORT;
        return;
    }
    buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize,
                                          "directory scan buffer");

    /*
     * Set up the parent pointer for the root directory, if
     * present.  (If the root directory is not present, we will
     * create it in pass 3.)
     */
    dir = e2fsck_get_dir_info(ctx, EXT2_ROOT_INO);
    if (dir)
        dir->parent = EXT2_ROOT_INO;

    cd.buf = buf;
    cd.ctx = ctx;
    cd.count = 1;
    cd.max = ext2fs_dblist_count(fs->dblist);

    if (ctx->progress)
        (void) (ctx->progress)(ctx, 2, 0, cd.max);

    cd.pctx.errcode = ext2fs_dblist_iterate(fs->dblist, check_dir_block,
                                            &cd);
    if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
        return;
    if (cd.pctx.errcode) {
        fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx);
        ctx->flags |= E2F_FLAG_ABORT;
        return;
    }

    ext2fs_free_mem((void **) &buf);
    ext2fs_free_dblist(fs->dblist);

    if (ctx->inode_bad_map) {
        ext2fs_free_inode_bitmap(ctx->inode_bad_map);
        ctx->inode_bad_map = 0;
    }
    if (ctx->inode_reg_map) {
        ext2fs_free_inode_bitmap(ctx->inode_reg_map);
        ctx->inode_reg_map = 0;
    }

    clear_problem_context(&pctx);
    if (ctx->large_files) {
        if (!(sb->s_feature_ro_compat &
                EXT2_FEATURE_RO_COMPAT_LARGE_FILE) &&
                fix_problem(ctx, PR_2_FEATURE_LARGE_FILES, &pctx)) {
            sb->s_feature_ro_compat |=
                EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
            ext2fs_mark_super_dirty(fs);
        }
        if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
                fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
            ext2fs_update_dynamic_rev(fs);
            ext2fs_mark_super_dirty(fs);
        }
    } else if (!ctx->large_files &&
               (sb->s_feature_ro_compat &
                EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
        if (fs->flags & EXT2_FLAG_RW) {
            sb->s_feature_ro_compat &=
                ~EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
            ext2fs_mark_super_dirty(fs);
        }
    }

#ifdef RESOURCE_TRACK
    if (ctx->options & E2F_OPT_TIME2) {
        e2fsck_clear_progbar(ctx);
        print_resource_track("Pass 2", &rtrack);
    }
#endif
}
Exemplo n.º 12
0
/*
 * This function resets an e2fsck context; it is called when e2fsck
 * needs to be restarted.
 */
errcode_t e2fsck_reset_context(e2fsck_t ctx)
{
	int	i;

	ctx->flags &= E2F_RESET_FLAGS;
	ctx->lost_and_found = 0;
	ctx->bad_lost_and_found = 0;
	if (ctx->inode_used_map) {
		ext2fs_free_inode_bitmap(ctx->inode_used_map);
		ctx->inode_used_map = 0;
	}
	if (ctx->inode_dir_map) {
		ext2fs_free_inode_bitmap(ctx->inode_dir_map);
		ctx->inode_dir_map = 0;
	}
	if (ctx->inode_reg_map) {
		ext2fs_free_inode_bitmap(ctx->inode_reg_map);
		ctx->inode_reg_map = 0;
	}
	if (ctx->block_found_map) {
		ext2fs_free_block_bitmap(ctx->block_found_map);
		ctx->block_found_map = 0;
	}
	if (ctx->inode_link_info) {
		ext2fs_free_icount(ctx->inode_link_info);
		ctx->inode_link_info = 0;
	}
	if (ctx->journal_io) {
		if (ctx->fs && ctx->fs->io != ctx->journal_io)
			io_channel_close(ctx->journal_io);
		ctx->journal_io = 0;
	}
	if (ctx->fs && ctx->fs->dblist) {
		ext2fs_free_dblist(ctx->fs->dblist);
		ctx->fs->dblist = 0;
	}
	e2fsck_free_dir_info(ctx);
	e2fsck_free_dx_dir_info(ctx);
	if (ctx->refcount) {
		ea_refcount_free(ctx->refcount);
		ctx->refcount = 0;
	}
	if (ctx->refcount_extra) {
		ea_refcount_free(ctx->refcount_extra);
		ctx->refcount_extra = 0;
	}
	if (ctx->block_dup_map) {
		ext2fs_free_block_bitmap(ctx->block_dup_map);
		ctx->block_dup_map = 0;
	}
	if (ctx->block_ea_map) {
		ext2fs_free_block_bitmap(ctx->block_ea_map);
		ctx->block_ea_map = 0;
	}
	if (ctx->block_metadata_map) {
		ext2fs_free_block_bitmap(ctx->block_metadata_map);
		ctx->block_metadata_map = 0;
	}
	if (ctx->inode_bb_map) {
		ext2fs_free_inode_bitmap(ctx->inode_bb_map);
		ctx->inode_bb_map = 0;
	}
	if (ctx->inode_bad_map) {
		ext2fs_free_inode_bitmap(ctx->inode_bad_map);
		ctx->inode_bad_map = 0;
	}
	if (ctx->inode_imagic_map) {
		ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
		ctx->inode_imagic_map = 0;
	}
	if (ctx->dirs_to_hash) {
		ext2fs_u32_list_free(ctx->dirs_to_hash);
		ctx->dirs_to_hash = 0;
	}

	/*
	 * Clear the array of invalid meta-data flags
	 */
	if (ctx->invalid_inode_bitmap_flag) {
		ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag);
		ctx->invalid_inode_bitmap_flag = 0;
	}
	if (ctx->invalid_block_bitmap_flag) {
		ext2fs_free_mem(&ctx->invalid_block_bitmap_flag);
		ctx->invalid_block_bitmap_flag = 0;
	}
	if (ctx->invalid_inode_table_flag) {
		ext2fs_free_mem(&ctx->invalid_inode_table_flag);
		ctx->invalid_inode_table_flag = 0;
	}
	if (ctx->encrypted_dirs) {
		ext2fs_u32_list_free(ctx->encrypted_dirs);
		ctx->encrypted_dirs = 0;
	}
	if (ctx->inode_count) {
		ext2fs_free_icount(ctx->inode_count);
		ctx->inode_count = 0;
	}

	/* Clear statistic counters */
	ctx->fs_directory_count = 0;
	ctx->fs_regular_count = 0;
	ctx->fs_blockdev_count = 0;
	ctx->fs_chardev_count = 0;
	ctx->fs_links_count = 0;
	ctx->fs_symlinks_count = 0;
	ctx->fs_fast_symlinks_count = 0;
	ctx->fs_fifo_count = 0;
	ctx->fs_total_count = 0;
	ctx->fs_badblocks_count = 0;
	ctx->fs_sockets_count = 0;
	ctx->fs_ind_count = 0;
	ctx->fs_dind_count = 0;
	ctx->fs_tind_count = 0;
	ctx->fs_fragmented = 0;
	ctx->fs_fragmented_dir = 0;
	ctx->large_files = 0;

	for (i=0; i < MAX_EXTENT_DEPTH_COUNT; i++)
		ctx->extent_depth_count[i] = 0;

	/* Reset the superblock to the user's requested value */
	ctx->superblock = ctx->use_superblock;

	return 0;
}
Exemplo n.º 13
0
static void check_inode_bitmaps(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t	i;
	unsigned int	free_inodes = 0;
	int		group_free = 0;
	int		dirs_count = 0;
	int		group = 0;
	unsigned int	inodes = 0;
	ext2_ino_t	*free_array;
	ext2_ino_t	*dir_array;
	int		actual, bitmap;
	errcode_t	retval;
	struct problem_context	pctx;
	int		problem, save_problem, fixit, had_problem;
	int		csum_flag;
	int		skip_group = 0;
	int		redo_flag = 0;
	ext2_ino_t		first_free = fs->super->s_inodes_per_group + 1;

	clear_problem_context(&pctx);
	free_array = (ext2_ino_t *) e2fsck_allocate_memory(ctx,
	    fs->group_desc_count * sizeof(ext2_ino_t), "free inode count array");

	dir_array = (ext2_ino_t *) e2fsck_allocate_memory(ctx,
	   fs->group_desc_count * sizeof(ext2_ino_t), "directory count array");

	if ((1 < ext2fs_get_inode_bitmap_start2(ctx->inode_used_map)) ||
	    (fs->super->s_inodes_count >
	     ext2fs_get_inode_bitmap_end2(ctx->inode_used_map))) {
		pctx.num = 3;
		pctx.blk = 1;
		pctx.blk2 = fs->super->s_inodes_count;
		pctx.ino = ext2fs_get_inode_bitmap_start2(ctx->inode_used_map);
		pctx.ino2 = ext2fs_get_inode_bitmap_end2(ctx->inode_used_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}
	if ((1 < ext2fs_get_inode_bitmap_start2(fs->inode_map)) ||
	    (fs->super->s_inodes_count >
	     ext2fs_get_inode_bitmap_end2(fs->inode_map))) {
		pctx.num = 4;
		pctx.blk = 1;
		pctx.blk2 = fs->super->s_inodes_count;
		pctx.ino = ext2fs_get_inode_bitmap_start2(fs->inode_map);
		pctx.ino2 = ext2fs_get_inode_bitmap_end2(fs->inode_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

	csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
					       EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
redo_counts:
	had_problem = 0;
	save_problem = 0;
	pctx.ino = pctx.ino2 = 0;
	if (csum_flag &&
	    (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)))
		skip_group++;

	/* Protect loop from wrap-around if inodes_count is maxed */
	for (i = 1; i <= fs->super->s_inodes_count && i > 0; i++) {
		bitmap = 0;
		if (skip_group &&
		    i % fs->super->s_inodes_per_group == 1) {
			/*
			 * Current inode is the first inode
			 * in the current block group.
			 */
			if (ext2fs_test_inode_bitmap_range(
				    ctx->inode_used_map, i,
				    fs->super->s_inodes_per_group)) {
				/*
				 * When the compared inodes in inodes bitmap
				 * are 0, count the free inode,
				 * skip the current block group.
				 */
				first_free = 1;
				inodes = fs->super->s_inodes_per_group - 1;
				group_free = inodes;
				free_inodes += inodes;
				i += inodes;
				skip_group = 0;
				goto do_counts;
			}
		}

		actual = ext2fs_fast_test_inode_bitmap2(ctx->inode_used_map, i);
		if (redo_flag)
			bitmap = actual;
		else if (!skip_group)
			bitmap = ext2fs_fast_test_inode_bitmap2(fs->inode_map, i);
		if (!actual == !bitmap)
			goto do_counts;

		if (!actual && bitmap) {
			/*
			 * Inode wasn't used, but marked in bitmap
			 */
			problem = PR_5_INODE_UNUSED;
		} else /* if (actual && !bitmap) */ {
			/*
			 * Inode used, but not in bitmap
			 */
			problem = PR_5_INODE_USED;

			/* We should never hit this, because it means that
			 * inodes were marked in use that weren't noticed
			 * in pass1 or pass 2. It is easier to fix the problem
			 * than to kill e2fsck and leave the user stuck. */
			if (skip_group) {
				struct problem_context pctx2;
				pctx2.blk = i;
				pctx2.group = group;
				if (fix_problem(ctx, PR_5_INODE_UNINIT,&pctx2)){
					ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
					skip_group = 0;
				}
			}
		}
		if (pctx.ino == 0) {
			pctx.ino = pctx.ino2 = i;
			save_problem = problem;
		} else {
			if ((problem == save_problem) &&
			    (pctx.ino2 == i-1))
				pctx.ino2++;
			else {
				print_bitmap_problem(ctx, save_problem, &pctx);
				pctx.ino = pctx.ino2 = i;
				save_problem = problem;
			}
		}
		ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
		had_problem++;
		/*
		 * If there a problem we should turn off the discard so we
		 * do not compromise the filesystem.
		 */
		ctx->options &= ~E2F_OPT_DISCARD;

do_counts:
		inodes++;
		if (bitmap) {
			if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, i))
				dirs_count++;
			if (inodes > first_free) {
				e2fsck_discard_inodes(ctx, group, first_free,
						      inodes - first_free);
				first_free = fs->super->s_inodes_per_group + 1;
			}
		} else {
			group_free++;
			free_inodes++;
			if (first_free > inodes)
				first_free = inodes;
		}

		if ((inodes == fs->super->s_inodes_per_group) ||
		    (i == fs->super->s_inodes_count)) {
			/*
			 * If the last inode is free, we can discard it as well.
			 */
			if (!bitmap && inodes >= first_free)
				e2fsck_discard_inodes(ctx, group, first_free,
						      inodes - first_free + 1);
			/*
			 * If discard zeroes data and the group inode table
			 * was not zeroed yet, set itable as zeroed
			 */
			if ((ctx->options & E2F_OPT_DISCARD) &&
			    io_channel_discard_zeroes_data(fs->io) &&
			    !(ext2fs_bg_flags_test(fs, group,
						   EXT2_BG_INODE_ZEROED))) {
				ext2fs_bg_flags_set(fs, group,
						    EXT2_BG_INODE_ZEROED);
				ext2fs_group_desc_csum_set(fs, group);
			}

			first_free = fs->super->s_inodes_per_group + 1;
			free_array[group] = group_free;
			dir_array[group] = dirs_count;
			group ++;
			inodes = 0;
			skip_group = 0;
			group_free = 0;
			dirs_count = 0;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 5,
					    group + fs->group_desc_count,
					    fs->group_desc_count*2))
					goto errout;
			if (csum_flag &&
			    (i != fs->super->s_inodes_count) &&
			    (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)
			     ))
				skip_group++;
		}
	}
	if (pctx.ino)
		print_bitmap_problem(ctx, save_problem, &pctx);

	if (had_problem)
		fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP);
	else
		fixit = -1;
	ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;

	if (fixit == 1) {
		ext2fs_free_inode_bitmap(fs->inode_map);
		retval = ext2fs_copy_bitmap(ctx->inode_used_map,
						  &fs->inode_map);
		if (retval) {
			clear_problem_context(&pctx);
			fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			goto errout;
		}
		ext2fs_set_bitmap_padding(fs->inode_map);
		ext2fs_mark_ib_dirty(fs);

		/* redo counts */
		inodes = 0; free_inodes = 0; group_free = 0;
		dirs_count = 0; group = 0;
		memset(free_array, 0, fs->group_desc_count * sizeof(int));
		memset(dir_array, 0, fs->group_desc_count * sizeof(int));
		redo_flag++;
		goto redo_counts;
	} else if (fixit == 0)
		ext2fs_unmark_valid(fs);

	for (i = 0; i < fs->group_desc_count; i++) {
		if (free_array[i] != ext2fs_bg_free_inodes_count(fs, i)) {
			pctx.group = i;
			pctx.ino = ext2fs_bg_free_inodes_count(fs, i);
			pctx.ino2 = free_array[i];
			if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP,
					&pctx)) {
				ext2fs_bg_free_inodes_count_set(fs, i, free_array[i]);
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
		if (dir_array[i] != ext2fs_bg_used_dirs_count(fs, i)) {
			pctx.group = i;
			pctx.ino = ext2fs_bg_used_dirs_count(fs, i);
			pctx.ino2 = dir_array[i];

			if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP,
					&pctx)) {
				ext2fs_bg_used_dirs_count_set(fs, i, dir_array[i]);
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
	}
	if (free_inodes != fs->super->s_free_inodes_count) {
		pctx.group = -1;
		pctx.ino = fs->super->s_free_inodes_count;
		pctx.ino2 = free_inodes;

		if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
			fs->super->s_free_inodes_count = free_inodes;
			ext2fs_mark_super_dirty(fs);
		}
	}
errout:
	ext2fs_free_mem(&free_array);
	ext2fs_free_mem(&dir_array);
}
Exemplo n.º 14
0
void e2fsck_pass4(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t	i;
	struct ext2_inode	inode;
#ifdef RESOURCE_TRACK
	struct resource_track	rtrack;
#endif
	struct problem_context	pctx;
	__u16	link_count, link_counted;
	char	*buf = 0;
	int	group, maxgroup;
	
#ifdef RESOURCE_TRACK
	init_resource_track(&rtrack);
#endif

#ifdef MTRACE
	mtrace_print("Pass 4");
#endif

	clear_problem_context(&pctx);

	if (!(ctx->options & E2F_OPT_PREEN))
		fix_problem(ctx, PR_4_PASS_HEADER, &pctx);

	group = 0;
	maxgroup = fs->group_desc_count;
	if (ctx->progress)
		if ((ctx->progress)(ctx, 4, 0, maxgroup))
			return;

	/* Protect loop from wrap-around if s_inodes_count maxed */
	for (i=1; i <= fs->super->s_inodes_count && i > 0; i++) {
		if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
			goto errout;
		if ((i % fs->super->s_inodes_per_group) == 0) {
			group++;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 4, group, maxgroup))
					goto errout;
		}
		if (i == EXT2_BAD_INO ||
		    (i > EXT2_ROOT_INO && i < EXT2_FIRST_INODE(fs->super)))
			continue;
		if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map, i)) ||
		    (ctx->inode_imagic_map &&
		     ext2fs_test_inode_bitmap(ctx->inode_imagic_map, i)) ||
		    (ctx->inode_bb_map &&
		     ext2fs_test_inode_bitmap(ctx->inode_bb_map, i)))
			continue;
		ext2fs_icount_fetch(ctx->inode_link_info, i, &link_count);
		ext2fs_icount_fetch(ctx->inode_count, i, &link_counted);
		if (link_counted == 0) {
			if (!buf)
				buf = e2fsck_allocate_memory(ctx,
				     fs->blocksize, "bad_inode buffer");
			if (e2fsck_process_bad_inode(ctx, 0, i, buf))
				continue;
			if (disconnect_inode(ctx, i))
				continue;
			ext2fs_icount_fetch(ctx->inode_link_info, i,
					    &link_count);
			ext2fs_icount_fetch(ctx->inode_count, i,
					    &link_counted);
		}
		if (link_counted != link_count) {
			e2fsck_read_inode(ctx, i, &inode, "pass4");
			pctx.ino = i;
			pctx.inode = &inode;
			if (link_count != inode.i_links_count) {
				pctx.num = link_count;
				fix_problem(ctx,
					    PR_4_INCONSISTENT_COUNT, &pctx);
			}
			pctx.num = link_counted;
			if (fix_problem(ctx, PR_4_BAD_REF_COUNT, &pctx)) {
				inode.i_links_count = link_counted;
				e2fsck_write_inode(ctx, i, &inode, "pass4");
			}
		}
	}
	ext2fs_free_icount(ctx->inode_link_info); ctx->inode_link_info = 0;
	ext2fs_free_icount(ctx->inode_count); ctx->inode_count = 0;
	ext2fs_free_inode_bitmap(ctx->inode_bb_map);
	ctx->inode_bb_map = 0;
	ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
	ctx->inode_imagic_map = 0;
errout:
	if (buf)
		ext2fs_free_mem(&buf);
#ifdef RESOURCE_TRACK
	if (ctx->options & E2F_OPT_TIME2) {
		e2fsck_clear_progbar(ctx);
		print_resource_track(_("Pass 4"), &rtrack);
	}
#endif
}
Exemplo n.º 15
0
static void check_inode_bitmaps(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t	i;
	unsigned int	free_inodes = 0;
	int		group_free = 0;
	int		dirs_count = 0;
	int		group = 0;
	unsigned int	inodes = 0;
	int		*free_array;
	int		*dir_array;
	int		actual, bitmap;
	errcode_t	retval;
	struct problem_context	pctx;
	int		problem, save_problem, fixit, had_problem;
	int		lazy_bg = 0;
	int		skip_group = 0;

	clear_problem_context(&pctx);
	free_array = (int *) e2fsck_allocate_memory(ctx,
	    fs->group_desc_count * sizeof(int), "free inode count array");

	dir_array = (int *) e2fsck_allocate_memory(ctx,
	   fs->group_desc_count * sizeof(int), "directory count array");

	if ((1 < ext2fs_get_inode_bitmap_start(ctx->inode_used_map)) ||
	    (fs->super->s_inodes_count >
	     ext2fs_get_inode_bitmap_end(ctx->inode_used_map))) {
		pctx.num = 3;
		pctx.blk = 1;
		pctx.blk2 = fs->super->s_inodes_count;
		pctx.ino = ext2fs_get_inode_bitmap_start(ctx->inode_used_map);
		pctx.ino2 = ext2fs_get_inode_bitmap_end(ctx->inode_used_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}
	if ((1 < ext2fs_get_inode_bitmap_start(fs->inode_map)) ||
	    (fs->super->s_inodes_count >
	     ext2fs_get_inode_bitmap_end(fs->inode_map))) {
		pctx.num = 4;
		pctx.blk = 1;
		pctx.blk2 = fs->super->s_inodes_count;
		pctx.ino = ext2fs_get_inode_bitmap_start(fs->inode_map);
		pctx.ino2 = ext2fs_get_inode_bitmap_end(fs->inode_map);
		fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);

		ctx->flags |= E2F_FLAG_ABORT; /* fatal */
		goto errout;
	}

	if (EXT2_HAS_COMPAT_FEATURE(fs->super,
				    EXT2_FEATURE_COMPAT_LAZY_BG))
		lazy_bg++;

redo_counts:
	had_problem = 0;
	save_problem = 0;
	pctx.ino = pctx.ino2 = 0;
	if (lazy_bg && (fs->group_desc[group].bg_flags &
			EXT2_BG_INODE_UNINIT))
		skip_group++;

	/* Protect loop from wrap-around if inodes_count is maxed */
	for (i = 1; i <= fs->super->s_inodes_count && i > 0; i++) {
		actual = ext2fs_fast_test_inode_bitmap(ctx->inode_used_map, i);
		if (skip_group)
			bitmap = 0;
		else
			bitmap = ext2fs_fast_test_inode_bitmap(fs->inode_map, i);
		if (actual == bitmap)
			goto do_counts;

		if (!actual && bitmap) {
			/*
			 * Inode wasn't used, but marked in bitmap
			 */
			problem = PR_5_INODE_UNUSED;
		} else /* if (actual && !bitmap) */ {
			/*
			 * Inode used, but not in bitmap
			 */
			problem = PR_5_INODE_USED;
		}
		if (pctx.ino == 0) {
			pctx.ino = pctx.ino2 = i;
			save_problem = problem;
		} else {
			if ((problem == save_problem) &&
			    (pctx.ino2 == i-1))
				pctx.ino2++;
			else {
				print_bitmap_problem(ctx, save_problem, &pctx);
				pctx.ino = pctx.ino2 = i;
				save_problem = problem;
			}
		}
		ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
		had_problem++;

do_counts:
		if (bitmap) {
			if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, i))
				dirs_count++;
		} else if (!skip_group) {
			group_free++;
			free_inodes++;
		}
		inodes++;
		if ((inodes == fs->super->s_inodes_per_group) ||
		    (i == fs->super->s_inodes_count)) {
			free_array[group] = group_free;
			dir_array[group] = dirs_count;
			group ++;
			inodes = 0;
			skip_group = 0;
			group_free = 0;
			dirs_count = 0;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 5,
					    group + fs->group_desc_count,
					    fs->group_desc_count*2))
					goto errout;
			if (lazy_bg &&
			    (i != fs->super->s_inodes_count) &&
			    (fs->group_desc[group].bg_flags &
			     EXT2_BG_INODE_UNINIT))
				skip_group++;
		}
	}
	if (pctx.ino)
		print_bitmap_problem(ctx, save_problem, &pctx);

	if (had_problem)
		fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP);
	else
		fixit = -1;
	ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;

	if (fixit == 1) {
		ext2fs_free_inode_bitmap(fs->inode_map);
		retval = ext2fs_copy_bitmap(ctx->inode_used_map,
						  &fs->inode_map);
		if (retval) {
			clear_problem_context(&pctx);
			fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			goto errout;
		}
		ext2fs_set_bitmap_padding(fs->inode_map);
		ext2fs_mark_ib_dirty(fs);

		/* redo counts */
		inodes = 0; free_inodes = 0; group_free = 0;
		dirs_count = 0; group = 0;
		memset(free_array, 0, fs->group_desc_count * sizeof(int));
		memset(dir_array, 0, fs->group_desc_count * sizeof(int));
		goto redo_counts;
	} else if (fixit == 0)
		ext2fs_unmark_valid(fs);

	for (i = 0; i < fs->group_desc_count; i++) {
		if (free_array[i] != fs->group_desc[i].bg_free_inodes_count) {
			pctx.group = i;
			pctx.ino = fs->group_desc[i].bg_free_inodes_count;
			pctx.ino2 = free_array[i];
			if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP,
					&pctx)) {
				fs->group_desc[i].bg_free_inodes_count =
					free_array[i];
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
		if (dir_array[i] != fs->group_desc[i].bg_used_dirs_count) {
			pctx.group = i;
			pctx.ino = fs->group_desc[i].bg_used_dirs_count;
			pctx.ino2 = dir_array[i];

			if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP,
					&pctx)) {
				fs->group_desc[i].bg_used_dirs_count =
					dir_array[i];
				ext2fs_mark_super_dirty(fs);
			} else
				ext2fs_unmark_valid(fs);
		}
	}
	if (free_inodes != fs->super->s_free_inodes_count) {
		pctx.group = -1;
		pctx.ino = fs->super->s_free_inodes_count;
		pctx.ino2 = free_inodes;

		if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
			fs->super->s_free_inodes_count = free_inodes;
			ext2fs_mark_super_dirty(fs);
		} else
			ext2fs_unmark_valid(fs);
	}
errout:
	ext2fs_free_mem(&free_array);
	ext2fs_free_mem(&dir_array);
}
Exemplo n.º 16
0
/*
 * This function resets an e2fsck context; it is called when e2fsck
 * needs to be restarted.
 */
errcode_t e2fsck_reset_context(e2fsck_t ctx)
{
	ctx->flags = 0;
	ctx->lost_and_found = 0;
	ctx->bad_lost_and_found = 0;
	if (ctx->inode_used_map) {
		ext2fs_free_inode_bitmap(ctx->inode_used_map);
		ctx->inode_used_map = 0;
	}
	if (ctx->inode_dir_map) {
		ext2fs_free_inode_bitmap(ctx->inode_dir_map);
		ctx->inode_dir_map = 0;
	}
	if (ctx->inode_reg_map) {
		ext2fs_free_inode_bitmap(ctx->inode_reg_map);
		ctx->inode_reg_map = 0;
	}
	if (ctx->block_found_map) {
		ext2fs_free_block_bitmap(ctx->block_found_map);
		ctx->block_found_map = 0;
	}
	if (ctx->inode_link_info) {
		ext2fs_free_icount(ctx->inode_link_info);
		ctx->inode_link_info = 0;
	}
	if (ctx->journal_io) {
		if (ctx->fs && ctx->fs->io != ctx->journal_io)
			io_channel_close(ctx->journal_io);
		ctx->journal_io = 0;
	}
	if (ctx->fs && ctx->fs->dblist) {
		ext2fs_free_dblist(ctx->fs->dblist);
		ctx->fs->dblist = 0;
	}
	e2fsck_free_dir_info(ctx);
#ifdef ENABLE_HTREE
	e2fsck_free_dx_dir_info(ctx);
#endif
	if (ctx->refcount) {
		ea_refcount_free(ctx->refcount);
		ctx->refcount = 0;
	}
	if (ctx->refcount_extra) {
		ea_refcount_free(ctx->refcount_extra);
		ctx->refcount_extra = 0;
	}
	if (ctx->block_dup_map) {
		ext2fs_free_block_bitmap(ctx->block_dup_map);
		ctx->block_dup_map = 0;
	}
	if (ctx->block_ea_map) {
		ext2fs_free_block_bitmap(ctx->block_ea_map);
		ctx->block_ea_map = 0;
	}
	if (ctx->inode_bb_map) {
		ext2fs_free_inode_bitmap(ctx->inode_bb_map);
		ctx->inode_bb_map = 0;
	}
	if (ctx->inode_bad_map) {
		ext2fs_free_inode_bitmap(ctx->inode_bad_map);
		ctx->inode_bad_map = 0;
	}
	if (ctx->inode_imagic_map) {
		ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
		ctx->inode_imagic_map = 0;
	}
	if (ctx->dirs_to_hash) {
		ext2fs_u32_list_free(ctx->dirs_to_hash);
		ctx->dirs_to_hash = 0;
	}

	/*
	 * Clear the array of invalid meta-data flags
	 */
	if (ctx->invalid_inode_bitmap_flag) {
		ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag);
		ctx->invalid_inode_bitmap_flag = 0;
	}
	if (ctx->invalid_block_bitmap_flag) {
		ext2fs_free_mem(&ctx->invalid_block_bitmap_flag);
		ctx->invalid_block_bitmap_flag = 0;
	}
	if (ctx->invalid_inode_table_flag) {
		ext2fs_free_mem(&ctx->invalid_inode_table_flag);
		ctx->invalid_inode_table_flag = 0;
	}

	/* Clear statistic counters */
	ctx->fs_directory_count = 0;
	ctx->fs_regular_count = 0;
	ctx->fs_blockdev_count = 0;
	ctx->fs_chardev_count = 0;
	ctx->fs_links_count = 0;
	ctx->fs_symlinks_count = 0;
	ctx->fs_fast_symlinks_count = 0;
	ctx->fs_fifo_count = 0;
	ctx->fs_total_count = 0;
	ctx->fs_badblocks_count = 0;
	ctx->fs_sockets_count = 0;
	ctx->fs_ind_count = 0;
	ctx->fs_dind_count = 0;
	ctx->fs_tind_count = 0;
	ctx->fs_fragmented = 0;
	ctx->large_files = 0;

	/* Reset the superblock to the user's requested value */
	ctx->superblock = ctx->use_superblock;
	
	return 0;
}
Exemplo n.º 17
0
static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
{
	dgrp_t i;
	char *block_bitmap = 0, *inode_bitmap = 0;
	char *buf;
	errcode_t retval;
	int block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
	int inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
	int csum_flag = 0;
	unsigned int	cnt;
	blk64_t	blk;
	blk64_t	blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
	blk64_t   blk_cnt;
	ext2_ino_t ino_itr = 1;
	ext2_ino_t ino_cnt;

	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);

	if ((block_nbytes > fs->blocksize) || (inode_nbytes > fs->blocksize))
		return EXT2_ET_CORRUPT_SUPERBLOCK;

	fs->write_bitmaps = ext2fs_write_bitmaps;

	if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
				       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
		csum_flag = 1;

	retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
	if (retval)
		return retval;
	if (do_block) {
		if (fs->block_map)
			ext2fs_free_block_bitmap(fs->block_map);
		strcpy(buf, "block bitmap for ");
		strcat(buf, fs->device_name);
		retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
		if (retval)
			goto cleanup;
		retval = io_channel_alloc_buf(fs->io, 0, &block_bitmap);
		if (retval)
			goto cleanup;
	} else
		block_nbytes = 0;
	if (do_inode) {
		if (fs->inode_map)
			ext2fs_free_inode_bitmap(fs->inode_map);
		strcpy(buf, "inode bitmap for ");
		strcat(buf, fs->device_name);
		retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
		if (retval)
			goto cleanup;
		retval = io_channel_alloc_buf(fs->io, 0, &inode_bitmap);
		if (retval)
			goto cleanup;
	} else
		inode_nbytes = 0;
	ext2fs_free_mem(&buf);

	if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
		blk = (fs->image_header->offset_inodemap / fs->blocksize);
		ino_cnt = fs->super->s_inodes_count;
		while (inode_nbytes > 0) {
			retval = io_channel_read_blk64(fs->image_io, blk++,
						     1, inode_bitmap);
			if (retval)
				goto cleanup;
			cnt = fs->blocksize << 3;
			if (cnt > ino_cnt)
				cnt = ino_cnt;
			retval = ext2fs_set_inode_bitmap_range2(fs->inode_map,
					       ino_itr, cnt, inode_bitmap);
			if (retval)
				goto cleanup;
			ino_itr += fs->blocksize << 3;
			ino_cnt -= fs->blocksize << 3;
			inode_nbytes -= fs->blocksize;
		}
		blk = (fs->image_header->offset_blockmap /
		       fs->blocksize);
		blk_cnt = (blk64_t)EXT2_CLUSTERS_PER_GROUP(fs->super) *
			fs->group_desc_count;
		while (block_nbytes > 0) {
			retval = io_channel_read_blk64(fs->image_io, blk++,
						     1, block_bitmap);
			if (retval)
				goto cleanup;
			cnt = fs->blocksize << 3;
			if (cnt > blk_cnt)
				cnt = blk_cnt;
			retval = ext2fs_set_block_bitmap_range2(fs->block_map,
				       blk_itr, cnt, block_bitmap);
			if (retval)
				goto cleanup;
			blk_itr += fs->blocksize << 3;
			blk_cnt -= fs->blocksize << 3;
			block_nbytes -= fs->blocksize;
		}
		goto success_cleanup;
	}

	for (i = 0; i < fs->group_desc_count; i++) {
		if (block_bitmap) {
			blk = ext2fs_block_bitmap_loc(fs, i);
			if (csum_flag &&
			    ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) &&
			    ext2fs_group_desc_csum_verify(fs, i))
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk64(fs->io, blk,
							       1, block_bitmap);
				if (retval) {
					retval = EXT2_ET_BLOCK_BITMAP_READ;
					goto cleanup;
				}
			} else
				memset(block_bitmap, 0, block_nbytes);
			cnt = block_nbytes << 3;
			retval = ext2fs_set_block_bitmap_range2(fs->block_map,
					       blk_itr, cnt, block_bitmap);
			if (retval)
				goto cleanup;
			blk_itr += block_nbytes << 3;
		}
		if (inode_bitmap) {
			blk = ext2fs_inode_bitmap_loc(fs, i);
			if (csum_flag &&
			    ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) &&
			    ext2fs_group_desc_csum_verify(fs, i))
				blk = 0;
			if (blk) {
				retval = io_channel_read_blk64(fs->io, blk,
							       1, inode_bitmap);
				if (retval) {
					retval = EXT2_ET_INODE_BITMAP_READ;
					goto cleanup;
				}
			} else
				memset(inode_bitmap, 0, inode_nbytes);
			cnt = inode_nbytes << 3;
			retval = ext2fs_set_inode_bitmap_range2(fs->inode_map,
					       ino_itr, cnt, inode_bitmap);
			if (retval)
				goto cleanup;
			ino_itr += inode_nbytes << 3;
		}
	}
success_cleanup:
	if (inode_bitmap)
		ext2fs_free_mem(&inode_bitmap);
	if (block_bitmap)
		ext2fs_free_mem(&block_bitmap);
	return 0;

cleanup:
	if (do_block) {
		ext2fs_free_mem(&fs->block_map);
		fs->block_map = 0;
	}
	if (do_inode) {
		ext2fs_free_mem(&fs->inode_map);
		fs->inode_map = 0;
	}
	if (inode_bitmap)
		ext2fs_free_mem(&inode_bitmap);
	if (block_bitmap)
		ext2fs_free_mem(&block_bitmap);
	if (buf)
		ext2fs_free_mem(&buf);
	return retval;
}
Exemplo n.º 18
0
void e2fsck_pass4(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t	i;
	struct ext2_inode	*inode;
#ifdef RESOURCE_TRACK
	struct resource_track	rtrack;
#endif
	struct problem_context	pctx;
	__u16	link_count, link_counted;
	char	*buf = 0;
	dgrp_t	group, maxgroup;

	init_resource_track(&rtrack, ctx->fs->io);

#ifdef MTRACE
	mtrace_print("Pass 4");
#endif

	clear_problem_context(&pctx);

	if (!(ctx->options & E2F_OPT_PREEN))
		fix_problem(ctx, PR_4_PASS_HEADER, &pctx);

	group = 0;
	maxgroup = fs->group_desc_count;
	if (ctx->progress)
		if ((ctx->progress)(ctx, 4, 0, maxgroup))
			return;

	inode = e2fsck_allocate_memory(ctx, EXT2_INODE_SIZE(fs->super),
				       "scratch inode");

	/* Protect loop from wrap-around if s_inodes_count maxed */
	for (i=1; i <= fs->super->s_inodes_count && i > 0; i++) {
		int isdir;

		if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
			goto errout;
		if ((i % fs->super->s_inodes_per_group) == 0) {
			group++;
			if (ctx->progress)
				if ((ctx->progress)(ctx, 4, group, maxgroup))
					goto errout;
		}
		if (i == EXT2_BAD_INO ||
		    (i > EXT2_ROOT_INO && i < EXT2_FIRST_INODE(fs->super)))
			continue;
		if (!(ext2fs_test_inode_bitmap2(ctx->inode_used_map, i)) ||
		    (ctx->inode_imagic_map &&
		     ext2fs_test_inode_bitmap2(ctx->inode_imagic_map, i)) ||
		    (ctx->inode_bb_map &&
		     ext2fs_test_inode_bitmap2(ctx->inode_bb_map, i)))
			continue;
		ext2fs_icount_fetch(ctx->inode_link_info, i, &link_count);
		ext2fs_icount_fetch(ctx->inode_count, i, &link_counted);
		if (link_counted == 0) {
			if (!buf)
				buf = e2fsck_allocate_memory(ctx,
				     fs->blocksize, "bad_inode buffer");
			if (e2fsck_process_bad_inode(ctx, 0, i, buf))
				continue;
			if (disconnect_inode(ctx, i, inode))
				continue;
			ext2fs_icount_fetch(ctx->inode_link_info, i,
					    &link_count);
			ext2fs_icount_fetch(ctx->inode_count, i,
					    &link_counted);
		}
		isdir = ext2fs_test_inode_bitmap2(ctx->inode_dir_map, i);
		if (isdir && (link_counted > EXT2_LINK_MAX))
			link_counted = 1;
		if (link_counted != link_count) {
			e2fsck_read_inode(ctx, i, inode, "pass4");
			pctx.ino = i;
			pctx.inode = inode;
			if ((link_count != inode->i_links_count) && !isdir &&
			    (inode->i_links_count <= EXT2_LINK_MAX)) {
				pctx.num = link_count;
				fix_problem(ctx,
					    PR_4_INCONSISTENT_COUNT, &pctx);
			}
			pctx.num = link_counted;
			/* i_link_count was previously exceeded, but no longer
			 * is, fix this but don't consider it an error */
			if ((isdir && link_counted > 1 &&
			     (inode->i_flags & EXT2_INDEX_FL) &&
			     link_count == 1 && !(ctx->options & E2F_OPT_NO)) ||
			    fix_problem(ctx, PR_4_BAD_REF_COUNT, &pctx)) {
				inode->i_links_count = link_counted;
				e2fsck_write_inode(ctx, i, inode, "pass4");
			}
		}
	}
	ext2fs_free_icount(ctx->inode_link_info); ctx->inode_link_info = 0;
	ext2fs_free_icount(ctx->inode_count); ctx->inode_count = 0;
	ext2fs_free_inode_bitmap(ctx->inode_bb_map);
	ctx->inode_bb_map = 0;
	ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
	ctx->inode_imagic_map = 0;
errout:
	if (buf)
		ext2fs_free_mem(&buf);

	ext2fs_free_mem(&inode);
	print_resource_track(ctx, _("Pass 4"), &rtrack, ctx->fs->io);
}