summaryrefslogtreecommitdiff
path: root/e2fsprogs/e2fsck/e2fsck.c
blob: 2a84c517135b7b8531568d60ba4fa478a855ae47 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
/*
 * e2fsck.c - a consistency checker for the new extended file system.
 * 
 * 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%
 */

#include <errno.h>

#include "e2fsck.h"
#include "problem.h"

/*
 * This function allocates an e2fsck context 
 */
errcode_t e2fsck_allocate_context(e2fsck_t *ret)
{
	e2fsck_t	context;
	errcode_t	retval;

	retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &context);
	if (retval)
		return retval;
	
	memset(context, 0, sizeof(struct e2fsck_struct));

	context->process_inode_size = 256;
	context->ext_attr_ver = 2;

	*ret = context;
	return 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;
}

void e2fsck_free_context(e2fsck_t ctx)
{
	if (!ctx)
		return;
	
	e2fsck_reset_context(ctx);
	if (ctx->blkid)
		blkid_put_cache(ctx->blkid);
			
	ext2fs_free_mem(&ctx);
}

/*
 * This function runs through the e2fsck passes and calls them all,
 * returning restart, abort, or cancel as necessary...
 */
typedef void (*pass_t)(e2fsck_t ctx);

pass_t e2fsck_passes[] = {
	e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4,
	e2fsck_pass5, 0 };

#define E2F_FLAG_RUN_RETURN	(E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART)

int e2fsck_run(e2fsck_t ctx)
{
	int	i;
	pass_t	e2fsck_pass;

#ifdef HAVE_SETJMP_H
	if (setjmp(ctx->abort_loc)) {
		ctx->flags &= ~E2F_FLAG_SETJMP_OK;
		return (ctx->flags & E2F_FLAG_RUN_RETURN);
	}
	ctx->flags |= E2F_FLAG_SETJMP_OK;
#endif
		
	for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) {
		if (ctx->flags & E2F_FLAG_RUN_RETURN)
			break;
		e2fsck_pass(ctx);
		if (ctx->progress)
			(void) (ctx->progress)(ctx, 0, 0, 0);
	}
	ctx->flags &= ~E2F_FLAG_SETJMP_OK;
	
	if (ctx->flags & E2F_FLAG_RUN_RETURN)
		return (ctx->flags & E2F_FLAG_RUN_RETURN);
	return 0;
}