summaryrefslogtreecommitdiffstats
path: root/exfat/fsck/main.c
blob: 91f75459427b5742a2b5f58bd8c23cf64d49e3bc (plain) (blame)
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
/*
	main.c (02.09.09)
	exFAT file system checker.

	Free exFAT implementation.
	Copyright (C) 2011-2013  Andrew Nayenko

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License along
	with this program; if not, write to the Free Software Foundation, Inc.,
	51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <stdio.h>
#include <string.h>
#include <exfat.h>
#include <exfatfs.h>
#include <inttypes.h>
#include <unistd.h>

#define exfat_debug(format, ...)

uint64_t files_count, directories_count;

static int nodeck(struct exfat* ef, struct exfat_node* node)
{
	const cluster_t cluster_size = CLUSTER_SIZE(*ef->sb);
	cluster_t clusters = (node->size + cluster_size - 1) / cluster_size;
	cluster_t c = node->start_cluster;
	int rc = 0;

	while (clusters--)
	{
		if (CLUSTER_INVALID(c))
		{
			char name[UTF8_BYTES(EXFAT_NAME_MAX) + 1];

			exfat_get_name(node, name, sizeof(name) - 1);
			exfat_error("file `%s' has invalid cluster 0x%x", name, c);
			rc = 1;
			break;
		}
		if (BMAP_GET(ef->cmap.chunk, c - EXFAT_FIRST_DATA_CLUSTER) == 0)
		{
			char name[UTF8_BYTES(EXFAT_NAME_MAX) + 1];

			exfat_get_name(node, name, sizeof(name) - 1);
			exfat_error("cluster 0x%x of file `%s' is not allocated", c, name);
			rc = 1;
		}
		c = exfat_next_cluster(ef, node, c);
	}
	return rc;
}

static void dirck(struct exfat* ef, const char* path)
{
	struct exfat_node* parent;
	struct exfat_node* node;
	struct exfat_iterator it;
	int rc;
	size_t path_length;
	char* entry_path;

	if (exfat_lookup(ef, &parent, path) != 0)
		exfat_bug("directory `%s' is not found", path);
	if (!(parent->flags & EXFAT_ATTRIB_DIR))
		exfat_bug("`%s' is not a directory (0x%x)", path, parent->flags);
	if (nodeck(ef, parent) != 0)
		return;

	path_length = strlen(path);
	entry_path = malloc(path_length + 1 + UTF8_BYTES(EXFAT_NAME_MAX) + 1);
	if (entry_path == NULL)
	{
		exfat_error("out of memory");
		return;
	}
	strcpy(entry_path, path);
	strcat(entry_path, "/");

	rc = exfat_opendir(ef, parent, &it);
	if (rc != 0)
	{
		free(entry_path);
		exfat_put_node(ef, parent);
		exfat_error("failed to open directory `%s'", path);
		return;
	}
	while ((node = exfat_readdir(ef, &it)))
	{
		exfat_get_name(node, entry_path + path_length + 1,
				UTF8_BYTES(EXFAT_NAME_MAX));
		exfat_debug("%s: %s, %"PRIu64" bytes, cluster %u", entry_path,
				IS_CONTIGUOUS(*node) ? "contiguous" : "fragmented",
				node->size, node->start_cluster);
		if (node->flags & EXFAT_ATTRIB_DIR)
		{
			directories_count++;
			dirck(ef, entry_path);
		}
		else
		{
			files_count++;
			nodeck(ef, node);
		}
		exfat_put_node(ef, node);
	}
	exfat_closedir(ef, &it);
	exfat_put_node(ef, parent);
	free(entry_path);
}

static void fsck(struct exfat* ef)
{
	exfat_print_info(ef->sb, exfat_count_free_clusters(ef));
	dirck(ef, "");
}

static void usage(const char* prog)
{
	fprintf(stderr, "Usage: %s [-V] <device>\n", prog);
	exit(1);
}

int main(int argc, char* argv[])
{
	int opt;
	const char* spec = NULL;
	struct exfat ef;

	printf("exfatfsck %u.%u.%u\n",
			EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);

	while ((opt = getopt(argc, argv, "V")) != -1)
	{
		switch (opt)
		{
		case 'V':
			puts("Copyright (C) 2011-2013  Andrew Nayenko");
			return 0;
		default:
			usage(argv[0]);
			break;
		}
	}
	if (argc - optind != 1)
		usage(argv[0]);
	spec = argv[optind];

	if (exfat_mount(&ef, spec, "ro") != 0)
		return 1;

	printf("Checking file system on %s.\n", spec);
	fsck(&ef);
	exfat_unmount(&ef);
	printf("Totally %"PRIu64" directories and %"PRIu64" files.\n",
			directories_count, files_count);

	fputs("File system checking finished. ", stdout);
	if (exfat_errors != 0)
	{
		printf("ERRORS FOUND: %d.\n", exfat_errors);
		return 1;
	}
	puts("No errors found.");
	return 0;
}