[thirdparty/e2fsprogs.git] / e2fsck / super.c

/*
 * e2fsck.c - superblock checks
 * 
 * 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%
 */

#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif

#ifndef EXT2_SKIP_UUID
#include "uuid/uuid.h"
#endif
#include "e2fsck.h"
#include "problem.h"

#define MIN_CHECK 1
#define MAX_CHECK 2

static void check_super_value(e2fsck_t ctx, const char *descr,
			      unsigned long value, int flags,
			      unsigned long min_val, unsigned long max_val)
{
	struct		problem_context pctx;

	if (((flags & MIN_CHECK) && (value < min_val)) ||
	    ((flags & MAX_CHECK) && (value > max_val))) {
		clear_problem_context(&pctx);
		pctx.num = value;
		pctx.str = descr;
		fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
		ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
	}
}

/*
 * This routine may get stubbed out in special compilations of the
 * e2fsck code..
 */
#ifndef EXT2_SPECIAL_DEVICE_SIZE
errcode_t e2fsck_get_device_size(e2fsck_t ctx)
{
	return (ext2fs_get_device_size(ctx->filesystem_name,
				       EXT2_BLOCK_SIZE(ctx->fs->super),
				       &ctx->num_blocks));
}
#endif

/*
 * helper function to release an inode
 */
struct process_block_struct {
	e2fsck_t 	ctx;
	char 		*buf;
	struct problem_context *pctx;
	int		truncating;
	int		truncate_offset;
	e2_blkcnt_t	truncate_block;
	int		truncated_blocks;
	int		abort;
	errcode_t	errcode;
};

static int release_inode_block(ext2_filsys fs,
			       blk_t	*block_nr,
			       e2_blkcnt_t blockcnt,
			       blk_t	ref_blk EXT2FS_ATTR((unused)),
			       int	ref_offset EXT2FS_ATTR((unused)),
			       void *priv_data)
{
	struct process_block_struct *pb;
	e2fsck_t 		ctx;
	struct problem_context	*pctx;
	blk_t			blk = *block_nr;
	int			retval = 0;

	pb = (struct process_block_struct *) priv_data;
	ctx = pb->ctx;
	pctx = pb->pctx;

	pctx->blk = blk;
	pctx->blkcount = blockcnt;

	if (HOLE_BLKADDR(blk))
		return 0;

	if ((blk < fs->super->s_first_data_block) ||
	    (blk >= fs->super->s_blocks_count)) {
		fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx);
	return_abort:
		pb->abort = 1;
		return BLOCK_ABORT;
	}

	if (!ext2fs_test_block_bitmap(fs->block_map, blk)) {
		fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx);
		goto return_abort;
	}

	/*
	 * If we are deleting an orphan, then we leave the fields alone.
	 * If we are truncating an orphan, then update the inode fields
	 * and clean up any partial block data.
	 */
	if (pb->truncating) {
		/*
		 * We only remove indirect blocks if they are
		 * completely empty.
		 */
		if (blockcnt < 0) {
			int	i, limit;
			blk_t	*bp;
			
			pb->errcode = io_channel_read_blk(fs->io, blk, 1,
							pb->buf);
			if (pb->errcode)
				goto return_abort;

			limit = fs->blocksize >> 2;
			for (i = 0, bp = (blk_t *) pb->buf;
			     i < limit;	 i++, bp++)
				if (*bp)
					return 0;
		}
		/*
		 * We don't remove direct blocks until we've reached
		 * the truncation block.
		 */
		if (blockcnt >= 0 && blockcnt < pb->truncate_block)
			return 0;
		/*
		 * If part of the last block needs truncating, we do
		 * it here.
		 */
		if ((blockcnt == pb->truncate_block) && pb->truncate_offset) {
			pb->errcode = io_channel_read_blk(fs->io, blk, 1,
							pb->buf);
			if (pb->errcode)
				goto return_abort;
			memset(pb->buf + pb->truncate_offset, 0,
			       fs->blocksize - pb->truncate_offset);
			pb->errcode = io_channel_write_blk(fs->io, blk, 1,
							 pb->buf);
			if (pb->errcode)
				goto return_abort;
		}
		pb->truncated_blocks++;
		*block_nr = 0;
		retval |= BLOCK_CHANGED;
	}
	
	ext2fs_block_alloc_stats(fs, blk, -1);
	return retval;
}
		
/*
 * This function releases an inode.  Returns 1 if an inconsistency was
 * found.  If the inode has a link count, then it is being truncated and
 * not deleted.
 */
static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
				struct ext2_inode *inode, char *block_buf,
				struct problem_context *pctx)
{
	struct process_block_struct 	pb;
	ext2_filsys			fs = ctx->fs;
	errcode_t			retval;
	__u32				count;

	if (!ext2fs_inode_has_valid_blocks(inode))
		return 0;

	pb.buf = block_buf + 3 * ctx->fs->blocksize;
	pb.ctx = ctx;
	pb.abort = 0;
	pb.errcode = 0;
	pb.pctx = pctx;
	if (inode->i_links_count) {
		pb.truncating = 1;
		pb.truncate_block = (e2_blkcnt_t)
			((((long long)inode->i_size_high << 32) +
			  inode->i_size + fs->blocksize - 1) /
			 fs->blocksize);
		pb.truncate_offset = inode->i_size % fs->blocksize;
	} else {
		pb.truncating = 0;
		pb.truncate_block = 0;
		pb.truncate_offset = 0;
	}
	pb.truncated_blocks = 0;
	retval = ext2fs_block_iterate2(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE, 
				      block_buf, release_inode_block, &pb);
	if (retval) {
		com_err("release_inode_blocks", retval,
			_("while calling ext2fs_block_iterate for inode %d"),
			ino);
		return 1;
	}
	if (pb.abort)
		return 1;

	/* Refresh the inode since ext2fs_block_iterate may have changed it */
	e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks");

	if (pb.truncated_blocks)
		inode->i_blocks -= pb.truncated_blocks *
			(fs->blocksize / 512);

	if (inode->i_file_acl) {
		retval = ext2fs_adjust_ea_refcount(fs, inode->i_file_acl,
						   block_buf, -1, &count);
		if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) {
			retval = 0;
			count = 1;
		}
		if (retval) {
			com_err("release_inode_blocks", retval,
		_("while calling ext2fs_adjust_ea_refocunt for inode %d"),
				ino);
			return 1;
		}
		if (count == 0)
			ext2fs_block_alloc_stats(fs, inode->i_file_acl, -1);
		inode->i_file_acl = 0;
	}
	return 0;
}

/*
 * This function releases all of the orphan inodes.  It returns 1 if
 * it hit some error, and 0 on success.
 */
static int release_orphan_inodes(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	ext2_ino_t	ino, next_ino;
	struct ext2_inode inode;
	struct problem_context pctx;
	char *block_buf;

	if ((ino = fs->super->s_last_orphan) == 0)
		return 0;

	/*
	 * Win or lose, we won't be using the head of the orphan inode
	 * list again.
	 */
	fs->super->s_last_orphan = 0;
	ext2fs_mark_super_dirty(fs);

	/*
	 * If the filesystem contains errors, don't run the orphan
	 * list, since the orphan list can't be trusted; and we're
	 * going to be running a full e2fsck run anyway...
	 */
	if (fs->super->s_state & EXT2_ERROR_FS)
		return 0;
	
	if ((ino < EXT2_FIRST_INODE(fs->super)) ||
	    (ino > fs->super->s_inodes_count)) {
		clear_problem_context(&pctx);
		pctx.ino = ino;
		fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
		return 1;
	}

	block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4,
						    "block iterate buffer");
	e2fsck_read_bitmaps(ctx);
	
	while (ino) {
		e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes");
		clear_problem_context(&pctx);
		pctx.ino = ino;
		pctx.inode = &inode;
		pctx.str = inode.i_links_count ? _("Truncating") :
			_("Clearing");

		fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx);

		next_ino = inode.i_dtime;
		if (next_ino &&
		    ((next_ino < EXT2_FIRST_INODE(fs->super)) ||
		     (next_ino > fs->super->s_inodes_count))) {
			pctx.ino = next_ino;
			fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
			goto return_abort;
		}

		if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx))
			goto return_abort;

		if (!inode.i_links_count) {
			ext2fs_inode_alloc_stats2(fs, ino, -1,
						  LINUX_S_ISDIR(inode.i_mode));
			inode.i_dtime = time(0);
		} else {
			inode.i_dtime = 0;
		}
		e2fsck_write_inode(ctx, ino, &inode, "delete_file");
		ino = next_ino;
	}
	ext2fs_free_mem(&block_buf);
	return 0;
return_abort:
	ext2fs_free_mem(&block_buf);
	return 1;
}


void check_super_block(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	blk_t	first_block, last_block;
	struct ext2_super_block *sb = fs->super;
	blk_t	blocks_per_group = fs->super->s_blocks_per_group;
	blk_t	bpg_max;
	int	inodes_per_block;
	int	ipg_max;
	dgrp_t	i;
	blk_t	should_be;
	struct problem_context	pctx;
	struct ext2_inode inode;
	__u32	free_blocks = 0, free_inodes = 0;

	inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super);
	ipg_max = inodes_per_block * (blocks_per_group - 4);
	if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb))
		ipg_max = EXT2_MAX_INODES_PER_GROUP(sb);
	bpg_max = 8 * EXT2_BLOCK_SIZE(sb);
	if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb))
		bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb);

	ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
		 sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap");
	ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
		 sizeof(int) * fs->group_desc_count, "invalid_block_bitmap");
	ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx,
		sizeof(int) * fs->group_desc_count, "invalid_inode_table");

	clear_problem_context(&pctx);

	/*
	 * Verify the super block constants...
	 */
	check_super_value(ctx, "inodes_count", sb->s_inodes_count,
			  MIN_CHECK, 1, 0);
	check_super_value(ctx, "blocks_count", sb->s_blocks_count,
			  MIN_CHECK, 1, 0);
	check_super_value(ctx, "first_data_block", sb->s_first_data_block,
			  MAX_CHECK, 0, sb->s_blocks_count);
	check_super_value(ctx, "log_block_size", sb->s_log_block_size,
			  MIN_CHECK | MAX_CHECK, 0,
			  EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE);
	check_super_value(ctx, "log_frag_size", sb->s_log_frag_size,
			  MIN_CHECK | MAX_CHECK, 0, sb->s_log_block_size);
	check_super_value(ctx, "frags_per_group", sb->s_frags_per_group,
			  MIN_CHECK | MAX_CHECK, sb->s_blocks_per_group,
			  bpg_max);
	check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group,
			  MIN_CHECK | MAX_CHECK, 8, bpg_max);
	check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group,
			  MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max);
	check_super_value(ctx, "r_blocks_count", sb->s_r_blocks_count,
			  MAX_CHECK, 0, sb->s_blocks_count / 4);

	if (!ctx->num_blocks) {
		pctx.errcode = e2fsck_get_device_size(ctx);
		if (pctx.errcode && pctx.errcode != EXT2_ET_UNIMPLEMENTED) {
			fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
			ctx->flags |= E2F_FLAG_ABORT;
			return;
		}
		if ((pctx.errcode != EXT2_ET_UNIMPLEMENTED) &&
		    (ctx->num_blocks < sb->s_blocks_count)) {
			pctx.blk = sb->s_blocks_count;
			pctx.blk2 = ctx->num_blocks;
			if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
				ctx->flags |= E2F_FLAG_ABORT;
				return;
			}
		}
	}

	if (sb->s_log_block_size != (__u32) sb->s_log_frag_size) {
		pctx.blk = EXT2_BLOCK_SIZE(sb);
		pctx.blk2 = EXT2_FRAG_SIZE(sb);
		fix_problem(ctx, PR_0_NO_FRAGMENTS, &pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		return;
	}

	should_be = sb->s_frags_per_group >>
		(sb->s_log_block_size - sb->s_log_frag_size);		
	if (sb->s_blocks_per_group != should_be) {
		pctx.blk = sb->s_blocks_per_group;
		pctx.blk2 = should_be;
		fix_problem(ctx, PR_0_BLOCKS_PER_GROUP, &pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		return;
	}

	should_be = (sb->s_log_block_size == 0) ? 1 : 0;
	if (sb->s_first_data_block != should_be) {
		pctx.blk = sb->s_first_data_block;
		pctx.blk2 = should_be;
		fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx);
		ctx->flags |= E2F_FLAG_ABORT;
		return;
	}

	should_be = sb->s_inodes_per_group * fs->group_desc_count;
	if (sb->s_inodes_count != should_be) {
		pctx.ino = sb->s_inodes_count;
		pctx.ino2 = should_be;
		if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
			sb->s_inodes_count = should_be;
			ext2fs_mark_super_dirty(fs);
		}
	}

	/*
	 * Verify the group descriptors....
	 */
	first_block =  fs->super->s_first_data_block;
	last_block = first_block + blocks_per_group;

	for (i = 0; i < fs->group_desc_count; i++) {
		pctx.group = i;
		
		if (i == fs->group_desc_count - 1)
			last_block = fs->super->s_blocks_count;
		if ((fs->group_desc[i].bg_block_bitmap < first_block) ||
		    (fs->group_desc[i].bg_block_bitmap >= last_block)) {
			pctx.blk = fs->group_desc[i].bg_block_bitmap;
			if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx))
				fs->group_desc[i].bg_block_bitmap = 0;
		}
		if (fs->group_desc[i].bg_block_bitmap == 0) {
			ctx->invalid_block_bitmap_flag[i]++;
			ctx->invalid_bitmaps++;
		}
		if ((fs->group_desc[i].bg_inode_bitmap < first_block) ||
		    (fs->group_desc[i].bg_inode_bitmap >= last_block)) {
			pctx.blk = fs->group_desc[i].bg_inode_bitmap;
			if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx))
				fs->group_desc[i].bg_inode_bitmap = 0;
		}
		if (fs->group_desc[i].bg_inode_bitmap == 0) {
			ctx->invalid_inode_bitmap_flag[i]++;
			ctx->invalid_bitmaps++;
		}
		if ((fs->group_desc[i].bg_inode_table < first_block) ||
		    ((fs->group_desc[i].bg_inode_table +
		      fs->inode_blocks_per_group - 1) >= last_block)) {
			pctx.blk = fs->group_desc[i].bg_inode_table;
			if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx))
				fs->group_desc[i].bg_inode_table = 0;
		}
		if (fs->group_desc[i].bg_inode_table == 0) {
			ctx->invalid_inode_table_flag[i]++;
			ctx->invalid_bitmaps++;
		}
		free_blocks += fs->group_desc[i].bg_free_blocks_count;
		free_inodes += fs->group_desc[i].bg_free_inodes_count;
		first_block += fs->super->s_blocks_per_group;
		last_block += fs->super->s_blocks_per_group;
	}
	/*
	 * If we have invalid bitmaps, set the error state of the
	 * filesystem.
	 */
	if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
		fs->super->s_state &= ~EXT2_VALID_FS;
		ext2fs_mark_super_dirty(fs);
	}

	clear_problem_context(&pctx);
	
#ifndef EXT2_SKIP_UUID
	/*
	 * If the UUID field isn't assigned, assign it.
	 */
	if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) {
		if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
			uuid_generate(sb->s_uuid);
			ext2fs_mark_super_dirty(fs);
			fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
		}
	}
#endif

	/*
	 * Update the global counts from the block group counts.  This
	 * is needed for an experimental patch which eliminates
	 * locking the entire filesystem when allocating blocks or
	 * inodes; if the filesystem is not unmounted cleanly, the
	 * global counts may not be accurate.
	 */
	if (!(ctx->options & E2F_OPT_READONLY) &&
	    ((free_blocks != fs->super->s_free_blocks_count) ||
	     (free_inodes != fs->super->s_free_inodes_count))) {
		fs->super->s_free_blocks_count = free_blocks;
		fs->super->s_free_inodes_count = free_inodes;
		ext2fs_mark_super_dirty(fs);
	}
	
	/*
	 * For the Hurd, check to see if the filetype option is set,
	 * since it doesn't support it.
	 */
	if (!(ctx->options & E2F_OPT_READONLY) &&
	    fs->super->s_creator_os == EXT2_OS_HURD &&
	    (fs->super->s_feature_incompat &
	     EXT2_FEATURE_INCOMPAT_FILETYPE)) {
		if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) {
			fs->super->s_feature_incompat &=
				~EXT2_FEATURE_INCOMPAT_FILETYPE;
			ext2fs_mark_super_dirty(fs);

		}
	}

	/*
	 * If we have any of the compatibility flags set, we need to have a
	 * revision 1 filesystem.  Most kernels will not check the flags on
	 * a rev 0 filesystem and we may have corruption issues because of
	 * the incompatible changes to the filesystem.
	 */
	if (!(ctx->options & E2F_OPT_READONLY) &&
	    fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
	    (fs->super->s_feature_compat ||
	     fs->super->s_feature_ro_compat ||
	     fs->super->s_feature_incompat) &&
	    fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) {
		ext2fs_update_dynamic_rev(fs);
		ext2fs_mark_super_dirty(fs);
	}

	/* 
	 * If the resize inode feature isn't set, then
	 * s_reserved_gdt_blocks must be zero, and the resize inode
	 * must be cleared.
	 */
	if (!(fs->super->s_feature_compat & 
	      EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
		if (fs->super->s_reserved_gdt_blocks) {
			pctx.num = fs->super->s_reserved_gdt_blocks;
			if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
					&pctx)) {
				fs->super->s_reserved_gdt_blocks = 0;
				ext2fs_mark_super_dirty(fs);
			}
		}
		e2fsck_read_inode(ctx, EXT2_RESIZE_INO, &inode, 
				  "check_resize");
		for (i=0; i < EXT2_N_BLOCKS; i++) {
			if (inode.i_block[i])
				break;
		}
		pctx.ino = EXT2_RESIZE_INO;
		if ((i < EXT2_N_BLOCKS) &&
		    fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) {
			for (i=0; i < EXT2_N_BLOCKS; i++) {
				inode.i_block[i] = 0;
			}
			inode.i_blocks = 0;
			e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
					   "clear_resize");
		}
	}

	/*
	 * Clean up any orphan inodes, if present.
	 */
	if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) {
		fs->super->s_state &= ~EXT2_VALID_FS;
		ext2fs_mark_super_dirty(fs);
	}

	/*
	 * Move the ext3 journal file, if necessary.
	 */
	e2fsck_move_ext3_journal(ctx);
	return;
}
Commit	Line	Data
1b6bf175 TT	1	/*
	2	* e2fsck.c - superblock checks
	3	*
	4	* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
	5	*
	6	* %Begin-Header%
	7	* This file may be redistributed under the terms of the GNU Public
	8	* License.
	9	* %End-Header%
	10	*/
	11
1b6bf175 TT	12	#ifdef HAVE_ERRNO_H
	13	#include <errno.h>
	14	#endif
1b6bf175	15
54be2ccc	16	#ifndef EXT2_SKIP_UUID
1b6bf175	17	#include "uuid/uuid.h"
54be2ccc	18	#endif
1b6bf175 TT	19	#include "e2fsck.h"
1b6bf175 TT	20	#include "problem.h"
1b6bf175 TT	21
	22	#define MIN_CHECK 1
	23	#define MAX_CHECK 2
	24
	25	static void check_super_value(e2fsck_t ctx, const char *descr,
	26	unsigned long value, int flags,
7f813ba3	27	unsigned long min_val, unsigned long max_val)
1b6bf175 TT	28	{
	29	struct problem_context pctx;
	30
7f813ba3 TT	31	if (((flags & MIN_CHECK) && (value < min_val)) \|\|
7f813ba3 TT	32	((flags & MAX_CHECK) && (value > max_val))) {
1b6bf175 TT	33	clear_problem_context(&pctx);
	34	pctx.num = value;
	35	pctx.str = descr;
	36	fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
08b21301	37	ctx->flags \|= E2F_FLAG_ABORT; /* never get here! */
1b6bf175 TT	38	}
	39	}
	40
4313932c TT	41	/*
	42	* This routine may get stubbed out in special compilations of the
	43	* e2fsck code..
	44	*/
	45	#ifndef EXT2_SPECIAL_DEVICE_SIZE
	46	errcode_t e2fsck_get_device_size(e2fsck_t ctx)
	47	{
	48	return (ext2fs_get_device_size(ctx->filesystem_name,
	49	EXT2_BLOCK_SIZE(ctx->fs->super),
	50	&ctx->num_blocks));
	51	}
4313932c TT	52	#endif
4313932c TT	53
80bfaa3e TT	54	/*
	55	* helper function to release an inode
	56	*/
	57	struct process_block_struct {
8394902e TT	58	e2fsck_t ctx;
8394902e TT	59	char *buf;
80bfaa3e	60	struct problem_context *pctx;
8394902e TT	61	int truncating;
8394902e TT	62	int truncate_offset;
54434927	63	e2_blkcnt_t truncate_block;
8394902e TT	64	int truncated_blocks;
	65	int abort;
	66	errcode_t errcode;
80bfaa3e TT	67	};
	68
	69	static int release_inode_block(ext2_filsys fs,
	70	blk_t *block_nr,
54434927 TT	71	e2_blkcnt_t blockcnt,
	72	blk_t ref_blk EXT2FS_ATTR((unused)),
	73	int ref_offset EXT2FS_ATTR((unused)),
80bfaa3e TT	74	void *priv_data)
	75	{
	76	struct process_block_struct *pb;
8394902e TT	77	e2fsck_t ctx;
	78	struct problem_context *pctx;
	79	blk_t blk = *block_nr;
	80	int retval = 0;
80bfaa3e TT	81
	82	pb = (struct process_block_struct *) priv_data;
	83	ctx = pb->ctx;
	84	pctx = pb->pctx;
	85
	86	pctx->blk = blk;
	87	pctx->blkcount = blockcnt;
	88
	89	if (HOLE_BLKADDR(blk))
	90	return 0;
	91
	92	if ((blk < fs->super->s_first_data_block) \|\|
	93	(blk >= fs->super->s_blocks_count)) {
	94	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx);
53ef44c4	95	return_abort:
80bfaa3e TT	96	pb->abort = 1;
	97	return BLOCK_ABORT;
	98	}
	99
	100	if (!ext2fs_test_block_bitmap(fs->block_map, blk)) {
	101	fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx);
53ef44c4	102	goto return_abort;
8394902e TT	103	}
	104
	105	/*
	106	* If we are deleting an orphan, then we leave the fields alone.
	107	* If we are truncating an orphan, then update the inode fields
	108	* and clean up any partial block data.
	109	*/
	110	if (pb->truncating) {
	111	/*
	112	* We only remove indirect blocks if they are
	113	* completely empty.
	114	*/
	115	if (blockcnt < 0) {
	116	int i, limit;
53ef44c4	117	blk_t *bp;
8394902e TT	118
	119	pb->errcode = io_channel_read_blk(fs->io, blk, 1,
	120	pb->buf);
	121	if (pb->errcode)
53ef44c4	122	goto return_abort;
8394902e TT	123
8394902e TT	124	limit = fs->blocksize >> 2;
53ef44c4 TT	125	for (i = 0, bp = (blk_t *) pb->buf;
	126	i < limit; i++, bp++)
	127	if (*bp)
8394902e TT	128	return 0;
	129	}
	130	/*
	131	* We don't remove direct blocks until we've reached
	132	* the truncation block.
	133	*/
	134	if (blockcnt >= 0 && blockcnt < pb->truncate_block)
	135	return 0;
	136	/*
	137	* If part of the last block needs truncating, we do
	138	* it here.
	139	*/
	140	if ((blockcnt == pb->truncate_block) && pb->truncate_offset) {
	141	pb->errcode = io_channel_read_blk(fs->io, blk, 1,
	142	pb->buf);
	143	if (pb->errcode)
53ef44c4	144	goto return_abort;
8394902e TT	145	memset(pb->buf + pb->truncate_offset, 0,
	146	fs->blocksize - pb->truncate_offset);
	147	pb->errcode = io_channel_write_blk(fs->io, blk, 1,
	148	pb->buf);
	149	if (pb->errcode)
53ef44c4	150	goto return_abort;
8394902e TT	151	}
	152	pb->truncated_blocks++;
	153	*block_nr = 0;
	154	retval \|= BLOCK_CHANGED;
80bfaa3e TT	155	}
80bfaa3e TT	156
0684a4f3	157	ext2fs_block_alloc_stats(fs, blk, -1);
8394902e	158	return retval;
80bfaa3e TT	159	}
	160
	161	/*
	162	* This function releases an inode. Returns 1 if an inconsistency was
8394902e TT	163	* found. If the inode has a link count, then it is being truncated and
8394902e TT	164	* not deleted.
80bfaa3e	165	*/
86c627ec	166	static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
721edd0e	167	struct ext2_inode inode, char block_buf,
80bfaa3e TT	168	struct problem_context *pctx)
80bfaa3e TT	169	{
0684a4f3	170	struct process_block_struct pb;
8394902e	171	ext2_filsys fs = ctx->fs;
80bfaa3e	172	errcode_t retval;
0684a4f3	173	__u32 count;
80bfaa3e	174
42475e28 TT	175	if (!ext2fs_inode_has_valid_blocks(inode))
	176	return 0;
	177
8394902e	178	pb.buf = block_buf + 3 * ctx->fs->blocksize;
80bfaa3e TT	179	pb.ctx = ctx;
80bfaa3e TT	180	pb.abort = 0;
8394902e	181	pb.errcode = 0;
80bfaa3e	182	pb.pctx = pctx;
8394902e TT	183	if (inode->i_links_count) {
8394902e TT	184	pb.truncating = 1;
54434927	185	pb.truncate_block = (e2_blkcnt_t)
8394902e TT	186	((((long long)inode->i_size_high << 32) +
	187	inode->i_size + fs->blocksize - 1) /
	188	fs->blocksize);
	189	pb.truncate_offset = inode->i_size % fs->blocksize;
	190	} else {
	191	pb.truncating = 0;
	192	pb.truncate_block = 0;
	193	pb.truncate_offset = 0;
	194	}
	195	pb.truncated_blocks = 0;
54434927	196	retval = ext2fs_block_iterate2(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE,
8394902e	197	block_buf, release_inode_block, &pb);
80bfaa3e	198	if (retval) {
8394902e	199	com_err("release_inode_blocks", retval,
80bfaa3e TT	200	_("while calling ext2fs_block_iterate for inode %d"),
	201	ino);
	202	return 1;
	203	}
	204	if (pb.abort)
	205	return 1;
	206
8394902e TT	207	/* Refresh the inode since ext2fs_block_iterate may have changed it */
	208	e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks");
	209
	210	if (pb.truncated_blocks)
	211	inode->i_blocks -= pb.truncated_blocks *
	212	(fs->blocksize / 512);
	213
0684a4f3 TT	214	if (inode->i_file_acl) {
	215	retval = ext2fs_adjust_ea_refcount(fs, inode->i_file_acl,
	216	block_buf, -1, &count);
	217	if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) {
	218	retval = 0;
	219	count = 1;
	220	}
	221	if (retval) {
	222	com_err("release_inode_blocks", retval,
	223	_("while calling ext2fs_adjust_ea_refocunt for inode %d"),
	224	ino);
	225	return 1;
	226	}
	227	if (count == 0)
	228	ext2fs_block_alloc_stats(fs, inode->i_file_acl, -1);
	229	inode->i_file_acl = 0;
	230	}
80bfaa3e TT	231	return 0;
	232	}
	233
	234	/*
	235	* This function releases all of the orphan inodes. It returns 1 if
	236	* it hit some error, and 0 on success.
	237	*/
	238	static int release_orphan_inodes(e2fsck_t ctx)
	239	{
	240	ext2_filsys fs = ctx->fs;
86c627ec	241	ext2_ino_t ino, next_ino;
80bfaa3e TT	242	struct ext2_inode inode;
	243	struct problem_context pctx;
	244	char *block_buf;
	245
	246	if ((ino = fs->super->s_last_orphan) == 0)
	247	return 0;
	248
25c63ba0 TT	249	/*
	250	* Win or lose, we won't be using the head of the orphan inode
	251	* list again.
	252	*/
	253	fs->super->s_last_orphan = 0;
	254	ext2fs_mark_super_dirty(fs);
eb4ab510 TT	255
	256	/*
	257	* If the filesystem contains errors, don't run the orphan
	258	* list, since the orphan list can't be trusted; and we're
	259	* going to be running a full e2fsck run anyway...
	260	*/
	261	if (fs->super->s_state & EXT2_ERROR_FS)
	262	return 0;
25c63ba0	263
80bfaa3e TT	264	if ((ino < EXT2_FIRST_INODE(fs->super)) \|\|
	265	(ino > fs->super->s_inodes_count)) {
	266	clear_problem_context(&pctx);
53ef44c4	267	pctx.ino = ino;
80bfaa3e TT	268	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
	269	return 1;
	270	}
	271
8394902e	272	block_buf = (char ) e2fsck_allocate_memory(ctx, fs->blocksize 4,
9b565759	273	"block iterate buffer");
80bfaa3e TT	274	e2fsck_read_bitmaps(ctx);
	275
	276	while (ino) {
8394902e	277	e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes");
80bfaa3e	278	clear_problem_context(&pctx);
ecf1b776	279	pctx.ino = ino;
80bfaa3e	280	pctx.inode = &inode;
f0b8c87d TT	281	pctx.str = inode.i_links_count ? _("Truncating") :
f0b8c87d TT	282	_("Clearing");
80bfaa3e	283
8394902e	284	fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx);
ecf1b776	285
80bfaa3e TT	286	next_ino = inode.i_dtime;
80bfaa3e TT	287	if (next_ino &&
99a2cc96 TT	288	((next_ino < EXT2_FIRST_INODE(fs->super)) \|\|
	289	(next_ino > fs->super->s_inodes_count))) {
	290	pctx.ino = next_ino;
80bfaa3e	291	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
53ef44c4	292	goto return_abort;
80bfaa3e TT	293	}
80bfaa3e TT	294
8394902e	295	if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx))
53ef44c4	296	goto return_abort;
ecf1b776	297
8394902e	298	if (!inode.i_links_count) {
0684a4f3 TT	299	ext2fs_inode_alloc_stats2(fs, ino, -1,
0684a4f3 TT	300	LINUX_S_ISDIR(inode.i_mode));
8394902e	301	inode.i_dtime = time(0);
eb16f861 ST	302	} else {
eb16f861 ST	303	inode.i_dtime = 0;
8394902e TT	304	}
8394902e TT	305	e2fsck_write_inode(ctx, ino, &inode, "delete_file");
80bfaa3e TT	306	ino = next_ino;
80bfaa3e TT	307	}
c4e3d3f3	308	ext2fs_free_mem(&block_buf);
80bfaa3e	309	return 0;
53ef44c4	310	return_abort:
c4e3d3f3	311	ext2fs_free_mem(&block_buf);
80bfaa3e TT	312	return 1;
	313	}
	314
	315
1b6bf175 TT	316	void check_super_block(e2fsck_t ctx)
	317	{
	318	ext2_filsys fs = ctx->fs;
	319	blk_t first_block, last_block;
5dd8f963	320	struct ext2_super_block *sb = fs->super;
1b6bf175	321	blk_t blocks_per_group = fs->super->s_blocks_per_group;
b21bf267	322	blk_t bpg_max;
78cf0547	323	int inodes_per_block;
b21bf267	324	int ipg_max;
7f813ba3	325	dgrp_t i;
1b6bf175 TT	326	blk_t should_be;
1b6bf175 TT	327	struct problem_context pctx;
e75cfc5d	328	struct ext2_inode inode;
2a77a784	329	__u32 free_blocks = 0, free_inodes = 0;
b21bf267 AD	330
	331	inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super);
	332	ipg_max = inodes_per_block * (blocks_per_group - 4);
	333	if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb))
	334	ipg_max = EXT2_MAX_INODES_PER_GROUP(sb);
	335	bpg_max = 8 * EXT2_BLOCK_SIZE(sb);
	336	if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb))
	337	bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb);
1b6bf175	338
54dc7ca2	339	ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	340	sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap");
54dc7ca2	341	ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	342	sizeof(int) * fs->group_desc_count, "invalid_block_bitmap");
54dc7ca2	343	ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	344	sizeof(int) * fs->group_desc_count, "invalid_inode_table");
b21bf267	345
1b6bf175 TT	346	clear_problem_context(&pctx);
	347
	348	/*
	349	* Verify the super block constants...
	350	*/
5dd8f963	351	check_super_value(ctx, "inodes_count", sb->s_inodes_count,
1b6bf175	352	MIN_CHECK, 1, 0);
5dd8f963	353	check_super_value(ctx, "blocks_count", sb->s_blocks_count,
1b6bf175	354	MIN_CHECK, 1, 0);
5dd8f963 TT	355	check_super_value(ctx, "first_data_block", sb->s_first_data_block,
5dd8f963 TT	356	MAX_CHECK, 0, sb->s_blocks_count);
5dd8f963	357	check_super_value(ctx, "log_block_size", sb->s_log_block_size,
31e29a12 TT	358	MIN_CHECK \| MAX_CHECK, 0,
31e29a12 TT	359	EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE);
932a489c AD	360	check_super_value(ctx, "log_frag_size", sb->s_log_frag_size,
932a489c AD	361	MIN_CHECK \| MAX_CHECK, 0, sb->s_log_block_size);
5dd8f963	362	check_super_value(ctx, "frags_per_group", sb->s_frags_per_group,
ef059870	363	MIN_CHECK \| MAX_CHECK, sb->s_blocks_per_group,
b21bf267	364	bpg_max);
5dd8f963	365	check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group,
b21bf267	366	MIN_CHECK \| MAX_CHECK, 8, bpg_max);
5dd8f963	367	check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group,
b21bf267	368	MIN_CHECK \| MAX_CHECK, inodes_per_block, ipg_max);
5dd8f963	369	check_super_value(ctx, "r_blocks_count", sb->s_r_blocks_count,
424cd2be	370	MAX_CHECK, 0, sb->s_blocks_count / 4);
1b6bf175	371
f8188fff	372	if (!ctx->num_blocks) {
4313932c	373	pctx.errcode = e2fsck_get_device_size(ctx);
f8188fff TT	374	if (pctx.errcode && pctx.errcode != EXT2_ET_UNIMPLEMENTED) {
f8188fff TT	375	fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
08b21301 TT	376	ctx->flags \|= E2F_FLAG_ABORT;
	377	return;
	378	}
f8188fff	379	if ((pctx.errcode != EXT2_ET_UNIMPLEMENTED) &&
5dd8f963 TT	380	(ctx->num_blocks < sb->s_blocks_count)) {
5dd8f963 TT	381	pctx.blk = sb->s_blocks_count;
f8188fff TT	382	pctx.blk2 = ctx->num_blocks;
	383	if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
	384	ctx->flags \|= E2F_FLAG_ABORT;
	385	return;
	386	}
	387	}
1b6bf175 TT	388	}
1b6bf175 TT	389
54434927	390	if (sb->s_log_block_size != (__u32) sb->s_log_frag_size) {
5dd8f963 TT	391	pctx.blk = EXT2_BLOCK_SIZE(sb);
5dd8f963 TT	392	pctx.blk2 = EXT2_FRAG_SIZE(sb);
1b6bf175	393	fix_problem(ctx, PR_0_NO_FRAGMENTS, &pctx);
08b21301 TT	394	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	395	return;
1b6bf175 TT	396	}
1b6bf175 TT	397
5dd8f963 TT	398	should_be = sb->s_frags_per_group >>
	399	(sb->s_log_block_size - sb->s_log_frag_size);
	400	if (sb->s_blocks_per_group != should_be) {
	401	pctx.blk = sb->s_blocks_per_group;
1b6bf175 TT	402	pctx.blk2 = should_be;
1b6bf175 TT	403	fix_problem(ctx, PR_0_BLOCKS_PER_GROUP, &pctx);
08b21301 TT	404	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	405	return;
1b6bf175 TT	406	}
1b6bf175 TT	407
5dd8f963 TT	408	should_be = (sb->s_log_block_size == 0) ? 1 : 0;
	409	if (sb->s_first_data_block != should_be) {
	410	pctx.blk = sb->s_first_data_block;
1b6bf175 TT	411	pctx.blk2 = should_be;
1b6bf175 TT	412	fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx);
08b21301 TT	413	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	414	return;
1b6bf175 TT	415	}
1b6bf175 TT	416
5dd8f963 TT	417	should_be = sb->s_inodes_per_group * fs->group_desc_count;
	418	if (sb->s_inodes_count != should_be) {
	419	pctx.ino = sb->s_inodes_count;
d4b0ce03 TT	420	pctx.ino2 = should_be;
d4b0ce03 TT	421	if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
5dd8f963	422	sb->s_inodes_count = should_be;
d4b0ce03 TT	423	ext2fs_mark_super_dirty(fs);
	424	}
	425	}
	426
1b6bf175 TT	427	/*
	428	* Verify the group descriptors....
	429	*/
	430	first_block = fs->super->s_first_data_block;
	431	last_block = first_block + blocks_per_group;
	432
	433	for (i = 0; i < fs->group_desc_count; i++) {
	434	pctx.group = i;
	435
	436	if (i == fs->group_desc_count - 1)
	437	last_block = fs->super->s_blocks_count;
	438	if ((fs->group_desc[i].bg_block_bitmap < first_block) \|\|
	439	(fs->group_desc[i].bg_block_bitmap >= last_block)) {
	440	pctx.blk = fs->group_desc[i].bg_block_bitmap;
24bfb443	441	if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx))
1b6bf175	442	fs->group_desc[i].bg_block_bitmap = 0;
24bfb443 TT	443	}
	444	if (fs->group_desc[i].bg_block_bitmap == 0) {
	445	ctx->invalid_block_bitmap_flag[i]++;
	446	ctx->invalid_bitmaps++;
1b6bf175 TT	447	}
	448	if ((fs->group_desc[i].bg_inode_bitmap < first_block) \|\|
	449	(fs->group_desc[i].bg_inode_bitmap >= last_block)) {
	450	pctx.blk = fs->group_desc[i].bg_inode_bitmap;
24bfb443	451	if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx))
1b6bf175	452	fs->group_desc[i].bg_inode_bitmap = 0;
24bfb443 TT	453	}
	454	if (fs->group_desc[i].bg_inode_bitmap == 0) {
	455	ctx->invalid_inode_bitmap_flag[i]++;
	456	ctx->invalid_bitmaps++;
1b6bf175 TT	457	}
	458	if ((fs->group_desc[i].bg_inode_table < first_block) \|\|
	459	((fs->group_desc[i].bg_inode_table +
	460	fs->inode_blocks_per_group - 1) >= last_block)) {
	461	pctx.blk = fs->group_desc[i].bg_inode_table;
24bfb443	462	if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx))
1b6bf175	463	fs->group_desc[i].bg_inode_table = 0;
24bfb443 TT	464	}
	465	if (fs->group_desc[i].bg_inode_table == 0) {
	466	ctx->invalid_inode_table_flag[i]++;
	467	ctx->invalid_bitmaps++;
1b6bf175	468	}
2a77a784 TT	469	free_blocks += fs->group_desc[i].bg_free_blocks_count;
2a77a784 TT	470	free_inodes += fs->group_desc[i].bg_free_inodes_count;
1b6bf175 TT	471	first_block += fs->super->s_blocks_per_group;
	472	last_block += fs->super->s_blocks_per_group;
	473	}
	474	/*
	475	* If we have invalid bitmaps, set the error state of the
	476	* filesystem.
	477	*/
	478	if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
	479	fs->super->s_state &= ~EXT2_VALID_FS;
	480	ext2fs_mark_super_dirty(fs);
	481	}
	482
4ea0a110 TT	483	clear_problem_context(&pctx);
4ea0a110 TT	484
54be2ccc	485	#ifndef EXT2_SKIP_UUID
1b6bf175 TT	486	/*
	487	* If the UUID field isn't assigned, assign it.
	488	*/
5dd8f963	489	if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) {
1b6bf175	490	if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
5dd8f963	491	uuid_generate(sb->s_uuid);
1b6bf175	492	ext2fs_mark_super_dirty(fs);
299d7424	493	fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1b6bf175 TT	494	}
1b6bf175 TT	495	}
54be2ccc	496	#endif
2a77a784 TT	497
	498	/*
	499	* Update the global counts from the block group counts. This
	500	* is needed for an experimental patch which eliminates
	501	* locking the entire filesystem when allocating blocks or
	502	* inodes; if the filesystem is not unmounted cleanly, the
	503	* global counts may not be accurate.
	504	*/
	505	if (!(ctx->options & E2F_OPT_READONLY) &&
	506	((free_blocks != fs->super->s_free_blocks_count) \|\|
	507	(free_inodes != fs->super->s_free_inodes_count))) {
	508	fs->super->s_free_blocks_count = free_blocks;
	509	fs->super->s_free_inodes_count = free_inodes;
	510	ext2fs_mark_super_dirty(fs);
	511	}
4ea0a110 TT	512
	513	/*
	514	* For the Hurd, check to see if the filetype option is set,
	515	* since it doesn't support it.
	516	*/
80bfaa3e TT	517	if (!(ctx->options & E2F_OPT_READONLY) &&
80bfaa3e TT	518	fs->super->s_creator_os == EXT2_OS_HURD &&
4ea0a110 TT	519	(fs->super->s_feature_incompat &
	520	EXT2_FEATURE_INCOMPAT_FILETYPE)) {
	521	if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) {
	522	fs->super->s_feature_incompat &=
	523	~EXT2_FEATURE_INCOMPAT_FILETYPE;
	524	ext2fs_mark_super_dirty(fs);
	525
	526	}
	527	}
80bfaa3e	528
7b59f1ef TT	529	/*
	530	* If we have any of the compatibility flags set, we need to have a
	531	* revision 1 filesystem. Most kernels will not check the flags on
	532	* a rev 0 filesystem and we may have corruption issues because of
	533	* the incompatible changes to the filesystem.
	534	*/
	535	if (!(ctx->options & E2F_OPT_READONLY) &&
	536	fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
	537	(fs->super->s_feature_compat \|\|
	538	fs->super->s_feature_ro_compat \|\|
	539	fs->super->s_feature_incompat) &&
	540	fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) {
a917d1cc	541	ext2fs_update_dynamic_rev(fs);
7b59f1ef TT	542	ext2fs_mark_super_dirty(fs);
	543	}
	544
e75cfc5d TT	545	/*
	546	* If the resize inode feature isn't set, then
	547	* s_reserved_gdt_blocks must be zero, and the resize inode
	548	* must be cleared.
	549	*/
	550	if (!(fs->super->s_feature_compat &
	551	EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
	552	if (fs->super->s_reserved_gdt_blocks) {
	553	pctx.num = fs->super->s_reserved_gdt_blocks;
	554	if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS,
	555	&pctx)) {
	556	fs->super->s_reserved_gdt_blocks = 0;
	557	ext2fs_mark_super_dirty(fs);
	558	}
	559	}
	560	e2fsck_read_inode(ctx, EXT2_RESIZE_INO, &inode,
	561	"check_resize");
	562	for (i=0; i < EXT2_N_BLOCKS; i++) {
	563	if (inode.i_block[i])
	564	break;
	565	}
	566	pctx.ino = EXT2_RESIZE_INO;
	567	if ((i < EXT2_N_BLOCKS) &&
	568	fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) {
	569	for (i=0; i < EXT2_N_BLOCKS; i++) {
	570	inode.i_block[i] = 0;
	571	}
	572	inode.i_blocks = 0;
	573	e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
	574	"clear_resize");
	575	}
	576	}
	577
80bfaa3e TT	578	/*
	579	* Clean up any orphan inodes, if present.
	580	*/
	581	if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) {
	582	fs->super->s_state &= ~EXT2_VALID_FS;
7b59f1ef	583	ext2fs_mark_super_dirty(fs);
80bfaa3e TT	584	}
80bfaa3e TT	585
773fd8a1 TT	586	/*
	587	* Move the ext3 journal file, if necessary.
	588	*/
	589	e2fsck_move_ext3_journal(ctx);
1b6bf175 TT	590	return;
1b6bf175 TT	591	}