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/*
main.c (02.09.09)
exFAT file system checker.
Free exFAT implementation.
Copyright (C) 2011-2014 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)
{
exfat_put_node(ef, parent);
return;
}
path_length = strlen(path);
entry_path = malloc(path_length + 1 + UTF8_BYTES(EXFAT_NAME_MAX) + 1);
if (entry_path == NULL)
{
exfat_put_node(ef, parent);
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);
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) 2011-2014 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;
}
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