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Diffstat (limited to 'src/fsck.fat.c')
| -rw-r--r-- | src/fsck.fat.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/fsck.fat.c b/src/fsck.fat.c new file mode 100644 index 0000000..92761aa --- /dev/null +++ b/src/fsck.fat.c @@ -0,0 +1,225 @@ +/* mkfs.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) 2008-2013 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/>. + + On Debian systems, 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" +#include "charconv.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 file system\n"); + fprintf(stderr, " -A toggle Atari file system format\n"); + fprintf(stderr, " -b make read-only boot sector check\n"); + fprintf(stderr, " -c N use DOS codepage N to decode short file names (default: %d)\n", DEFAULT_DOS_CODEPAGE); + 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 file system\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; + unsigned n_files_check = 0, n_files_verify = 0; + unsigned long free_clusters = 0; + + memset(&fs, 0, sizeof(fs)); + rw = salvage_files = verify = 0; + interactive = 1; + check_atari(); + + while ((c = getopt(argc, argv, "Aac:d:bflnprtu:vVwy")) != EOF) + 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 'c': + set_dos_codepage(atoi(optarg)); + 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; + printf("mkfs.fat " VERSION " (" VERSION_DATE ")\n"); + break; + case 'V': + verify = 1; + break; + case 'w': + write_immed = 1; + break; + default: + usage(argv[0]); + } + set_dos_codepage(-1); /* set default codepage if none was given in command line */ + if ((test || write_immed) && !rw) { + fprintf(stderr, "-t and -w require -a or -r\n"); + exit(2); + } + if (optind != argc - 1) + usage(argv[0]); + + printf("mkfs.fat " VERSION ", " VERSION_DATE ", FAT32, LFN\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); + n_files_check = n_files; + if (verify) { + n_files = 0; + printf("Starting verification pass.\n"); + read_fat(&fs); + scan_root(&fs); + reclaim_free(&fs); + qfree(&mem_queue); + n_files_verify = n_files; + } + +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 file system unchanged.\n"); + } + + if (!boot_only) + printf("%s: %u files, %lu/%lu clusters\n", argv[optind], + n_files, fs.clusters - free_clusters, fs.clusters); + + return fs_close(rw) ? 1 : 0; +} |