/* fsck.fat.c - User interface
Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
Copyright (C) 2008-2014 Daniel Baumann <mail@daniel-baumann.ch>
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 3 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, see <http://www.gnu.org/licenses/>.
The complete text of the GNU General Public License
can be found in /usr/share/common-licenses/GPL-3 file.
*/
/* FAT32, VFAT, Atari format support, and various fixes additions May 1998
* by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
#include "version.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include "common.h"
#include "fsck.fat.h"
#include "io.h"
#include "boot.h"
#include "fat.h"
#include "file.h"
#include "check.h"
int interactive = 0, rw = 0, list = 0, test = 0, verbose = 0, write_immed = 0;
int atari_format = 0, boot_only = 0;
unsigned n_files = 0;
void *mem_queue = NULL;
static void usage(char *name)
{
fprintf(stderr, "usage: %s [-aAbflrtvVwy] [-d path -d ...] "
"[-u path -u ...]\n%15sdevice\n", name, "");
fprintf(stderr, " -a automatically repair the filesystem\n");
fprintf(stderr, " -A toggle Atari filesystem format\n");
fprintf(stderr, " -b make read-only boot sector check\n");
fprintf(stderr, " -d path drop that file\n");
fprintf(stderr, " -f salvage unused chains to files\n");
fprintf(stderr, " -l list path names\n");
fprintf(stderr,
" -n no-op, check non-interactively without changing\n");
fprintf(stderr, " -p same as -a, for compat with other *fsck\n");
fprintf(stderr, " -r interactively repair the filesystem (default)\n");
fprintf(stderr, " -t test for bad clusters\n");
fprintf(stderr, " -u path try to undelete that (non-directory) file\n");
fprintf(stderr, " -v verbose mode\n");
fprintf(stderr, " -V perform a verification pass\n");
fprintf(stderr, " -w write changes to disk immediately\n");
fprintf(stderr, " -y same as -a, for compat with other *fsck\n");
exit(2);
}
/*
* ++roman: On m68k, check if this is an Atari; if yes, turn on Atari variant
* of MS-DOS filesystem by default.
*/
static void check_atari(void)
{
#ifdef __mc68000__
FILE *f;
char line[128], *p;
if (!(f = fopen("/proc/hardware", "r"))) {
perror("/proc/hardware");
return;
}
while (fgets(line, sizeof(line), f)) {
if (strncmp(line, "Model:", 6) == 0) {
p = line + 6;
p += strspn(p, " \t");
if (strncmp(p, "Atari ", 6) == 0)
atari_format = 1;
break;
}
}
fclose(f);
#endif
}
int main(int argc, char **argv)
{
DOS_FS fs;
int salvage_files, verify, c;
uint32_t free_clusters = 0;
memset(&fs, 0, sizeof(fs));
salvage_files = verify = 0;
rw = interactive = 1;
check_atari();
while ((c = getopt(argc, argv, "Aad:bflnprtu:vVwy")) != -1)
switch (c) {
case 'A': /* toggle Atari format */
atari_format = !atari_format;
break;
case 'a':
case 'p':
case 'y':
rw = 1;
interactive = 0;
salvage_files = 1;
break;
case 'b':
rw = 0;
interactive = 0;
boot_only = 1;
break;
case 'd':
file_add(optarg, fdt_drop);
break;
case 'f':
salvage_files = 1;
break;
case 'l':
list = 1;
break;
case 'n':
rw = 0;
interactive = 0;
break;
case 'r':
rw = 1;
interactive = 1;
break;
case 't':
test = 1;
break;
case 'u':
file_add(optarg, fdt_undelete);
break;
case 'v':
verbose = 1;
break;
case 'V':
verify = 1;
break;
case 'w':
write_immed = 1;
break;
default:
usage(argv[0]);
}
if ((test || write_immed) && !rw) {
fprintf(stderr, "-t and -w can not be used in read only mode\n");
exit(2);
}
if (optind != argc - 1)
usage(argv[0]);
printf("fsck.fat " VERSION " (" VERSION_DATE ")\n");
fs_open(argv[optind], rw);
read_boot(&fs);
if (boot_only)
goto exit;
if (verify)
printf("Starting check/repair pass.\n");
while (read_fat(&fs), scan_root(&fs))
qfree(&mem_queue);
if (test)
fix_bad(&fs);
if (salvage_files)
reclaim_file(&fs);
else
reclaim_free(&fs);
free_clusters = update_free(&fs);
file_unused();
qfree(&mem_queue);
if (verify) {
n_files = 0;
printf("Starting verification pass.\n");
read_fat(&fs);
scan_root(&fs);
reclaim_free(&fs);
qfree(&mem_queue);
}
exit:
if (fs_changed()) {
if (rw) {
if (interactive)
rw = get_key("yn", "Perform changes ? (y/n)") == 'y';
else
printf("Performing changes.\n");
} else
printf("Leaving filesystem unchanged.\n");
}
if (!boot_only)
printf("%s: %u files, %lu/%lu clusters\n", argv[optind],
n_files, (unsigned long)fs.clusters - free_clusters, (unsigned long)fs.clusters);
return fs_close(rw) ? 1 : 0;
}
