import the very fat e2fsck/fsck applets

1 files changed, 713 insertions, 0 deletions

diff --git a/e2fsprogs/e2fsck/super.c b/e2fsprogs/e2fsck/super.c
new file mode 100644
index 0000000..294cd80
--- /dev/null
+++ b/e2fsprogs/e2fsck/super.c
@@ -0,0 +1,713 @@
+/*
+ * 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;
+}
+
+/*
+ * Check the resize inode to make sure it is sane.  We check both for
+ * the case where on-line resizing is not enabled (in which case the
+ * resize inode should be cleared) as well as the case where on-line
+ * resizing is enabled.
+ */
+void check_resize_inode(e2fsck_t ctx)
+{
+	ext2_filsys fs = ctx->fs;
+	struct ext2_inode inode;
+	struct problem_context	pctx;
+	int		i, j, gdt_off, ind_off;
+	blk_t		blk, pblk, expect;
+	__u32 		*dind_buf = 0, *ind_buf;
+	errcode_t	retval;
+
+	clear_problem_context(&pctx);
+
+	/* 
+	 * If the resize inode feature isn't set, then 
+	 * s_reserved_gdt_blocks must be zero.
+	 */
+	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);
+			}
+		}
+	}
+
+	/* Read the resizde inode */
+	pctx.ino = EXT2_RESIZE_INO;
+	retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode);
+	if (retval) {
+		if (fs->super->s_feature_compat & 
+		    EXT2_FEATURE_COMPAT_RESIZE_INODE)
+			ctx->flags |= E2F_FLAG_RESIZE_INODE;
+		return;
+	}
+
+	/* 
+	 * If the resize inode feature isn't set, check to make sure 
+	 * the resize inode is cleared; then we're done.
+	 */
+	if (!(fs->super->s_feature_compat & 
+	      EXT2_FEATURE_COMPAT_RESIZE_INODE)) {
+		for (i=0; i < EXT2_N_BLOCKS; i++) {
+			if (inode.i_block[i])
+				break;
+		}
+		if ((i < EXT2_N_BLOCKS) &&
+		    fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) {
+			memset(&inode, 0, sizeof(inode));
+			e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
+					   "clear_resize");
+		}
+		return;
+	}
+
+	/* 
+	 * The resize inode feature is enabled; check to make sure the
+	 * only block in use is the double indirect block
+	 */
+	blk = inode.i_block[EXT2_DIND_BLOCK];
+	for (i=0; i < EXT2_N_BLOCKS; i++) {
+		if (i != EXT2_DIND_BLOCK && inode.i_block[i])
+			break;
+	}
+	if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count ||
+	    !(inode.i_mode & LINUX_S_IFREG) ||
+	    (blk < fs->super->s_first_data_block ||
+	     blk >= fs->super->s_blocks_count)) {
+	resize_inode_invalid:
+		if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) {
+			memset(&inode, 0, sizeof(inode));
+			e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode,
+					   "clear_resize");
+			ctx->flags |= E2F_FLAG_RESIZE_INODE;
+		}
+		if (!(ctx->options & E2F_OPT_READONLY)) {
+			fs->super->s_state &= ~EXT2_VALID_FS;
+			ext2fs_mark_super_dirty(fs);
+		}
+		goto cleanup;
+	}
+	dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2,
+						    "resize dind buffer");
+	ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize);
+
+	retval = ext2fs_read_ind_block(fs, blk, dind_buf);
+	if (retval)
+		goto resize_inode_invalid;
+
+	gdt_off = fs->desc_blocks;
+	pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks;
+	for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4; 
+	     i++, gdt_off++, pblk++) {
+		gdt_off %= fs->blocksize/4;
+		if (dind_buf[gdt_off] != pblk)
+			goto resize_inode_invalid;
+		retval = ext2fs_read_ind_block(fs, pblk, ind_buf);
+		if (retval) 
+			goto resize_inode_invalid;
+		ind_off = 0;
+		for (j = 1; j < fs->group_desc_count; j++) {
+			if (!ext2fs_bg_has_super(fs, j))
+				continue;
+			expect = pblk + (j * fs->super->s_blocks_per_group);
+			if (ind_buf[ind_off] != expect)
+				goto resize_inode_invalid;
+			ind_off++;
+		}
+	}
+
+cleanup:
+	if (dind_buf)
+		ext2fs_free_mem(&dind_buf);
+
+ }
+
+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;
+	struct ext2_group_desc *gd;
+	blk_t	blocks_per_group = fs->super->s_blocks_per_group;
+	blk_t	bpg_max;
+	int	inodes_per_block;
+	int	ipg_max;
+	int	inode_size;
+	dgrp_t	i;
+	blk_t	should_be;
+	struct problem_context	pctx;
+	__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 / 2);
+	check_super_value(ctx, "reserved_gdt_blocks", 
+			  sb->s_reserved_gdt_blocks, MAX_CHECK, 0,
+			  fs->blocksize/4);
+	inode_size = EXT2_INODE_SIZE(sb);
+	check_super_value(ctx, "inode_size",
+			  inode_size, MIN_CHECK | MAX_CHECK,
+			  EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize);
+	if (inode_size & (inode_size - 1)) {
+		pctx.num = inode_size;
+		pctx.str = "inode_size";
+		fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx);
+		ctx->flags |= E2F_FLAG_ABORT; /* never get here! */
+		return;
+	}
+		
+	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 =  sb->s_first_data_block;
+	last_block = first_block + blocks_per_group;
+
+	for (i = 0, gd=fs->group_desc; i < fs->group_desc_count; i++, gd++) {
+		pctx.group = i;
+		
+		if (i == fs->group_desc_count - 1)
+			last_block = sb->s_blocks_count;
+		if ((gd->bg_block_bitmap < first_block) ||
+		    (gd->bg_block_bitmap >= last_block)) {
+			pctx.blk = gd->bg_block_bitmap;
+			if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx))
+				gd->bg_block_bitmap = 0;
+		}
+		if (gd->bg_block_bitmap == 0) {
+			ctx->invalid_block_bitmap_flag[i]++;
+			ctx->invalid_bitmaps++;
+		}
+		if ((gd->bg_inode_bitmap < first_block) ||
+		    (gd->bg_inode_bitmap >= last_block)) {
+			pctx.blk = gd->bg_inode_bitmap;
+			if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx))
+				gd->bg_inode_bitmap = 0;
+		}
+		if (gd->bg_inode_bitmap == 0) {
+			ctx->invalid_inode_bitmap_flag[i]++;
+			ctx->invalid_bitmaps++;
+		}
+		if ((gd->bg_inode_table < first_block) ||
+		    ((gd->bg_inode_table +
+		      fs->inode_blocks_per_group - 1) >= last_block)) {
+			pctx.blk = gd->bg_inode_table;
+			if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx))
+				gd->bg_inode_table = 0;
+		}
+		if (gd->bg_inode_table == 0) {
+			ctx->invalid_inode_table_flag[i]++;
+			ctx->invalid_bitmaps++;
+		}
+		free_blocks += gd->bg_free_blocks_count;
+		free_inodes += gd->bg_free_inodes_count;
+		first_block += sb->s_blocks_per_group;
+		last_block += sb->s_blocks_per_group;
+
+		if ((gd->bg_free_blocks_count > sb->s_blocks_per_group) ||
+		    (gd->bg_free_inodes_count > sb->s_inodes_per_group) ||
+		    (gd->bg_used_dirs_count > sb->s_inodes_per_group))
+			ext2fs_unmark_valid(fs);
+
+	}
+
+	/*
+	 * 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 ((free_blocks != sb->s_free_blocks_count) ||
+	    (free_inodes != sb->s_free_inodes_count)) {
+		if (ctx->options & E2F_OPT_READONLY)
+			ext2fs_unmark_valid(fs);
+		else {
+			sb->s_free_blocks_count = free_blocks;
+			sb->s_free_inodes_count = free_inodes;
+			ext2fs_mark_super_dirty(fs);
+		}
+	}
+	
+	if ((sb->s_free_blocks_count > sb->s_blocks_count) ||
+	    (sb->s_free_inodes_count > sb->s_inodes_count))
+		ext2fs_unmark_valid(fs);
+
+
+	/*
+	 * If we have invalid bitmaps, set the error state of the
+	 * filesystem.
+	 */
+	if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
+		sb->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
+
+	/*
+	 * 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);
+	}
+
+	check_resize_inode(ctx);
+
+	/*
+	 * 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;
+}