[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 {
	ino_t	ino;
	e2fsck_t ctx;
	struct problem_context *pctx;
	int	abort;
};

static int release_inode_block(ext2_filsys fs,
			       blk_t	*block_nr,
			       int blockcnt,
			       void *priv_data)
{
	struct process_block_struct *pb;
	e2fsck_t ctx;
	struct problem_context *pctx;
	blk_t	blk = *block_nr;

	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);
		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);
		pb->abort = 1;
		return BLOCK_ABORT;
	}
	
	ext2fs_unmark_block_bitmap(fs->block_map, blk);
	
	return 0;
}
		
/*
 * This function releases an inode.  Returns 1 if an inconsistency was
 * found.
 */
static int release_inode_blocks(e2fsck_t ctx, ino_t ino, char* block_buf,
				struct problem_context *pctx)
{
	ext2_filsys fs = ctx->fs;
	errcode_t			retval;
	struct process_block_struct 	pb;

	pb.ino = ino;
	pb.ctx = ctx;
	pb.abort = 0;
	pb.pctx = pctx;
	retval = ext2fs_block_iterate(fs, ino, 0, block_buf,
				      release_inode_block, &pb);
	if (retval) {
		com_err("delete_file", retval,
			_("while calling ext2fs_block_iterate for inode %d"),
			ino);
		return 1;
	}
	if (pb.abort)
		return 1;

	ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
	ext2fs_mark_ib_dirty(fs);
	ext2fs_mark_bb_dirty(fs);
	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;
	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;

	if ((ino < EXT2_FIRST_INODE(fs->super)) ||
	    (ino > fs->super->s_inodes_count)) {
		clear_problem_context(&pctx);
		pctx.ino;
		fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
		return 1;
	}

	block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
						    "block interate buffer");
	e2fsck_read_bitmaps(ctx);
	
	while (ino) {
#ifdef JFS_DEBUG
		printf("Clearing orphan inode %d\n", ino);
#endif

		e2fsck_read_inode(ctx, ino, &inode, "delete_file");
		clear_problem_context(&pctx);
		pctx.ino;
		pctx.inode = &inode;

		if (inode.i_links_count) {
			fix_problem(ctx, PR_0_ORPHAN_INODE_INUSE, &pctx);
			goto abort;
		}
		next_ino = inode.i_dtime;
		if (next_ino &&
		    ((ino < EXT2_FIRST_INODE(fs->super)) ||
		     (ino > fs->super->s_inodes_count))) {
			fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
			goto abort;
		}

		if (release_inode_blocks(ctx, ino, block_buf, &pctx))
			goto abort;
		
		inode.i_dtime = time(0);
		e2fsck_write_inode(ctx, ino, &inode, "delete_file");
		ino = next_ino;
	}
	return 0;
abort:
	ext2fs_free_mem((void **) &block_buf);
	return 1;
}


void check_super_block(e2fsck_t ctx)
{
	ext2_filsys fs = ctx->fs;
	blk_t	first_block, last_block;
	struct ext2fs_sb *s = (struct ext2fs_sb *) fs->super;
	blk_t	blocks_per_group = fs->super->s_blocks_per_group;
	int	inodes_per_block;
	dgrp_t	i;
	blk_t	should_be;
	struct problem_context	pctx;
	
	inodes_per_block = (EXT2_INODE_SIZE(fs->super) + 
			    EXT2_BLOCK_SIZE(fs->super) - 1) /
				    EXT2_BLOCK_SIZE(fs->super);

	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", s->s_inodes_count,
			  MIN_CHECK, 1, 0);
	check_super_value(ctx, "blocks_count", s->s_blocks_count,
			  MIN_CHECK, 1, 0);
	check_super_value(ctx, "first_data_block", s->s_first_data_block,
			  MAX_CHECK, 0, s->s_blocks_count);
	check_super_value(ctx, "log_frag_size", s->s_log_frag_size,
			  MAX_CHECK, 0, 2);
	check_super_value(ctx, "log_block_size", s->s_log_block_size,
			  MIN_CHECK | MAX_CHECK, s->s_log_frag_size,
			  2);
	check_super_value(ctx, "frags_per_group", s->s_frags_per_group,
			  MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
	check_super_value(ctx, "blocks_per_group", s->s_blocks_per_group,
			  MIN_CHECK | MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
	check_super_value(ctx, "inodes_per_group", s->s_inodes_per_group,
			  MIN_CHECK | MAX_CHECK, 1,
			  inodes_per_block * blocks_per_group);
	check_super_value(ctx, "r_blocks_count", s->s_r_blocks_count,
			  MAX_CHECK, 0, s->s_blocks_count);

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

	should_be = s->s_frags_per_group >>
		(s->s_log_block_size - s->s_log_frag_size);		
	if (s->s_blocks_per_group != should_be) {
		pctx.blk = s->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 = (s->s_log_block_size == 0) ? 1 : 0;
	if (s->s_first_data_block != should_be) {
		pctx.blk = s->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 = s->s_inodes_per_group * fs->group_desc_count;
	if (s->s_inodes_count != should_be) {
		pctx.ino = s->s_inodes_count;
		pctx.ino2 = should_be;
		if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
			s->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;
				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;
				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;
				ctx->invalid_inode_table_flag[i]++;
				ctx->invalid_bitmaps++;
			}
		}
		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(s->s_uuid)) {
		if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
			uuid_generate(s->s_uuid);
			ext2fs_mark_super_dirty(fs);
		}
	}
#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);

		}
	}

	/*
	 * 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(ctx->fs);
	}

	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 {
	58	ino_t ino;
	59	e2fsck_t ctx;
	60	struct problem_context *pctx;
	61	int abort;
	62	};
	63
	64	static int release_inode_block(ext2_filsys fs,
	65	blk_t *block_nr,
	66	int blockcnt,
	67	void *priv_data)
	68	{
	69	struct process_block_struct *pb;
	70	e2fsck_t ctx;
	71	struct problem_context *pctx;
	72	blk_t blk = *block_nr;
	73
	74	pb = (struct process_block_struct *) priv_data;
	75	ctx = pb->ctx;
	76	pctx = pb->pctx;
	77
	78	pctx->blk = blk;
	79	pctx->blkcount = blockcnt;
	80
	81	if (HOLE_BLKADDR(blk))
	82	return 0;
	83
	84	if ((blk < fs->super->s_first_data_block) \|\|
	85	(blk >= fs->super->s_blocks_count)) {
	86	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx);
	87	pb->abort = 1;
	88	return BLOCK_ABORT;
	89	}
	90
	91	if (!ext2fs_test_block_bitmap(fs->block_map, blk)) {
	92	fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx);
	93	pb->abort = 1;
	94	return BLOCK_ABORT;
	95	}
	96
	97	ext2fs_unmark_block_bitmap(fs->block_map, blk);
	98
	99	return 0;
	100	}
	101
	102	/*
	103	* This function releases an inode. Returns 1 if an inconsistency was
	104	* found.
	105	*/
	106	static int release_inode_blocks(e2fsck_t ctx, ino_t ino, char* block_buf,
	107	struct problem_context *pctx)
	108	{
	109	ext2_filsys fs = ctx->fs;
	110	errcode_t retval;
	111	struct process_block_struct pb;
	112
	113	pb.ino = ino;
	114	pb.ctx = ctx;
	115	pb.abort = 0;
	116	pb.pctx = pctx;
	117	retval = ext2fs_block_iterate(fs, ino, 0, block_buf,
118	release_inode_block, &pb);
119	if (retval) {
120	com_err("delete_file", retval,
121	_("while calling ext2fs_block_iterate for inode %d"),
122	ino);
123	return 1;
124	}
125	if (pb.abort)
126	return 1;
127
128	ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
129	ext2fs_mark_ib_dirty(fs);
130	ext2fs_mark_bb_dirty(fs);
131	return 0;
132	}
133
134	/*
135	* This function releases all of the orphan inodes. It returns 1 if
136	* it hit some error, and 0 on success.
137	*/
138	static int release_orphan_inodes(e2fsck_t ctx)
139	{
140	ext2_filsys fs = ctx->fs;
141	ino_t ino, next_ino;
142	struct ext2_inode inode;
143	struct problem_context pctx;
144	char *block_buf;
145
146	if ((ino = fs->super->s_last_orphan) == 0)
147	return 0;
148
149	if ((ino < EXT2_FIRST_INODE(fs->super)) \|\|
150	(ino > fs->super->s_inodes_count)) {
151	clear_problem_context(&pctx);
152	pctx.ino;
153	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx);
154	return 1;
155	}
156
157	block_buf = (char ) e2fsck_allocate_memory(ctx, fs->blocksize 3,
158	"block interate buffer");
159	e2fsck_read_bitmaps(ctx);
160
161	while (ino) {
162	#ifdef JFS_DEBUG
163	printf("Clearing orphan inode %d\n", ino);
164	#endif
165
166	e2fsck_read_inode(ctx, ino, &inode, "delete_file");
167	clear_problem_context(&pctx);
168	pctx.ino;
169	pctx.inode = &inode;
170
171	if (inode.i_links_count) {
172	fix_problem(ctx, PR_0_ORPHAN_INODE_INUSE, &pctx);
173	goto abort;
174	}
175	next_ino = inode.i_dtime;
176	if (next_ino &&
177	((ino < EXT2_FIRST_INODE(fs->super)) \|\|
178	(ino > fs->super->s_inodes_count))) {
179	fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx);
180	goto abort;
181	}
182
183	if (release_inode_blocks(ctx, ino, block_buf, &pctx))
184	goto abort;
185
186	inode.i_dtime = time(0);
187	e2fsck_write_inode(ctx, ino, &inode, "delete_file");
188	ino = next_ino;
189	}
190	return 0;
191	abort:
192	ext2fs_free_mem((void **) &block_buf);
193	return 1;
194	}
195
196
1b6bf175 TT	197	void check_super_block(e2fsck_t ctx)
	198	{
	199	ext2_filsys fs = ctx->fs;
	200	blk_t first_block, last_block;
	201	struct ext2fs_sb s = (struct ext2fs_sb ) fs->super;
	202	blk_t blocks_per_group = fs->super->s_blocks_per_group;
78cf0547	203	int inodes_per_block;
7f813ba3	204	dgrp_t i;
1b6bf175 TT	205	blk_t should_be;
1b6bf175 TT	206	struct problem_context pctx;
78cf0547 TT	207
	208	inodes_per_block = (EXT2_INODE_SIZE(fs->super) +
	209	EXT2_BLOCK_SIZE(fs->super) - 1) /
	210	EXT2_BLOCK_SIZE(fs->super);
1b6bf175	211
54dc7ca2	212	ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	213	sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap");
54dc7ca2	214	ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	215	sizeof(int) * fs->group_desc_count, "invalid_block_bitmap");
54dc7ca2	216	ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx,
f8188fff	217	sizeof(int) * fs->group_desc_count, "invalid_inode_table");
1b6bf175 TT	218
	219	clear_problem_context(&pctx);
	220
	221	/*
	222	* Verify the super block constants...
	223	*/
	224	check_super_value(ctx, "inodes_count", s->s_inodes_count,
	225	MIN_CHECK, 1, 0);
	226	check_super_value(ctx, "blocks_count", s->s_blocks_count,
	227	MIN_CHECK, 1, 0);
	228	check_super_value(ctx, "first_data_block", s->s_first_data_block,
	229	MAX_CHECK, 0, s->s_blocks_count);
	230	check_super_value(ctx, "log_frag_size", s->s_log_frag_size,
	231	MAX_CHECK, 0, 2);
	232	check_super_value(ctx, "log_block_size", s->s_log_block_size,
	233	MIN_CHECK \| MAX_CHECK, s->s_log_frag_size,
	234	2);
	235	check_super_value(ctx, "frags_per_group", s->s_frags_per_group,
	236	MIN_CHECK \| MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
	237	check_super_value(ctx, "blocks_per_group", s->s_blocks_per_group,
	238	MIN_CHECK \| MAX_CHECK, 1, 8 * EXT2_BLOCK_SIZE(s));
	239	check_super_value(ctx, "inodes_per_group", s->s_inodes_per_group,
78cf0547 TT	240	MIN_CHECK \| MAX_CHECK, 1,
78cf0547 TT	241	inodes_per_block * blocks_per_group);
1b6bf175 TT	242	check_super_value(ctx, "r_blocks_count", s->s_r_blocks_count,
	243	MAX_CHECK, 0, s->s_blocks_count);
	244
f8188fff	245	if (!ctx->num_blocks) {
4313932c	246	pctx.errcode = e2fsck_get_device_size(ctx);
f8188fff TT	247	if (pctx.errcode && pctx.errcode != EXT2_ET_UNIMPLEMENTED) {
f8188fff TT	248	fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
08b21301 TT	249	ctx->flags \|= E2F_FLAG_ABORT;
	250	return;
	251	}
f8188fff TT	252	if ((pctx.errcode != EXT2_ET_UNIMPLEMENTED) &&
	253	(ctx->num_blocks < s->s_blocks_count)) {
	254	pctx.blk = s->s_blocks_count;
	255	pctx.blk2 = ctx->num_blocks;
	256	if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) {
	257	ctx->flags \|= E2F_FLAG_ABORT;
	258	return;
	259	}
	260	}
1b6bf175 TT	261	}
	262
	263	if (s->s_log_block_size != s->s_log_frag_size) {
	264	pctx.blk = EXT2_BLOCK_SIZE(s);
	265	pctx.blk2 = EXT2_FRAG_SIZE(s);
	266	fix_problem(ctx, PR_0_NO_FRAGMENTS, &pctx);
08b21301 TT	267	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	268	return;
1b6bf175 TT	269	}
1b6bf175 TT	270
17dba281 TT	271	should_be = s->s_frags_per_group >>
17dba281 TT	272	(s->s_log_block_size - s->s_log_frag_size);
1b6bf175 TT	273	if (s->s_blocks_per_group != should_be) {
	274	pctx.blk = s->s_blocks_per_group;
	275	pctx.blk2 = should_be;
	276	fix_problem(ctx, PR_0_BLOCKS_PER_GROUP, &pctx);
08b21301 TT	277	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	278	return;
1b6bf175 TT	279	}
	280
	281	should_be = (s->s_log_block_size == 0) ? 1 : 0;
	282	if (s->s_first_data_block != should_be) {
	283	pctx.blk = s->s_first_data_block;
	284	pctx.blk2 = should_be;
	285	fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx);
08b21301 TT	286	ctx->flags \|= E2F_FLAG_ABORT;
08b21301 TT	287	return;
1b6bf175 TT	288	}
1b6bf175 TT	289
d4b0ce03 TT	290	should_be = s->s_inodes_per_group * fs->group_desc_count;
	291	if (s->s_inodes_count != should_be) {
	292	pctx.ino = s->s_inodes_count;
	293	pctx.ino2 = should_be;
	294	if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) {
	295	s->s_inodes_count = should_be;
	296	ext2fs_mark_super_dirty(fs);
	297	}
	298	}
	299
1b6bf175 TT	300	/*
	301	* Verify the group descriptors....
	302	*/
	303	first_block = fs->super->s_first_data_block;
	304	last_block = first_block + blocks_per_group;
	305
	306	for (i = 0; i < fs->group_desc_count; i++) {
	307	pctx.group = i;
	308
	309	if (i == fs->group_desc_count - 1)
	310	last_block = fs->super->s_blocks_count;
	311	if ((fs->group_desc[i].bg_block_bitmap < first_block) \|\|
	312	(fs->group_desc[i].bg_block_bitmap >= last_block)) {
	313	pctx.blk = fs->group_desc[i].bg_block_bitmap;
	314	if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx)) {
	315	fs->group_desc[i].bg_block_bitmap = 0;
	316	ctx->invalid_block_bitmap_flag[i]++;
	317	ctx->invalid_bitmaps++;
	318	}
	319	}
	320	if ((fs->group_desc[i].bg_inode_bitmap < first_block) \|\|
	321	(fs->group_desc[i].bg_inode_bitmap >= last_block)) {
	322	pctx.blk = fs->group_desc[i].bg_inode_bitmap;
	323	if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx)) {
	324	fs->group_desc[i].bg_inode_bitmap = 0;
	325	ctx->invalid_inode_bitmap_flag[i]++;
	326	ctx->invalid_bitmaps++;
	327	}
	328	}
	329	if ((fs->group_desc[i].bg_inode_table < first_block) \|\|
	330	((fs->group_desc[i].bg_inode_table +
	331	fs->inode_blocks_per_group - 1) >= last_block)) {
	332	pctx.blk = fs->group_desc[i].bg_inode_table;
	333	if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx)) {
	334	fs->group_desc[i].bg_inode_table = 0;
	335	ctx->invalid_inode_table_flag[i]++;
	336	ctx->invalid_bitmaps++;
	337	}
	338	}
	339	first_block += fs->super->s_blocks_per_group;
	340	last_block += fs->super->s_blocks_per_group;
	341	}
	342	/*
	343	* If we have invalid bitmaps, set the error state of the
	344	* filesystem.
	345	*/
	346	if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) {
	347	fs->super->s_state &= ~EXT2_VALID_FS;
	348	ext2fs_mark_super_dirty(fs);
	349	}
	350
4ea0a110 TT	351	clear_problem_context(&pctx);
4ea0a110 TT	352
54be2ccc	353	#ifndef EXT2_SKIP_UUID
1b6bf175 TT	354	/*
	355	* If the UUID field isn't assigned, assign it.
	356	*/
	357	if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(s->s_uuid)) {
1b6bf175 TT	358	if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) {
	359	uuid_generate(s->s_uuid);
	360	ext2fs_mark_super_dirty(fs);
	361	}
	362	}
54be2ccc	363	#endif
4ea0a110 TT	364
	365	/*
	366	* For the Hurd, check to see if the filetype option is set,
	367	* since it doesn't support it.
	368	*/
80bfaa3e TT	369	if (!(ctx->options & E2F_OPT_READONLY) &&
80bfaa3e TT	370	fs->super->s_creator_os == EXT2_OS_HURD &&
4ea0a110 TT	371	(fs->super->s_feature_incompat &
	372	EXT2_FEATURE_INCOMPAT_FILETYPE)) {
	373	if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) {
	374	fs->super->s_feature_incompat &=
	375	~EXT2_FEATURE_INCOMPAT_FILETYPE;
	376	ext2fs_mark_super_dirty(fs);
	377
	378	}
	379	}
80bfaa3e TT	380
	381	/*
	382	* Clean up any orphan inodes, if present.
	383	*/
	384	if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) {
	385	fs->super->s_state &= ~EXT2_VALID_FS;
	386	ext2fs_mark_super_dirty(ctx->fs);
	387	}
	388
1b6bf175 TT	389	return;
1b6bf175 TT	390	}
80bfaa3e TT	391
80bfaa3e TT	392