1 /* vi: set sw=4 ts=4: */
3 * tune2fs: utility to modify EXT2 filesystem
5 * Busybox'ed (2009) by Vladimir Dronnikov <dronnikov@gmail.com>
7 * Licensed under GPLv2, see file LICENSE in this tarball for details.
11 #include <linux/ext2_fs.h>
14 char BUG_wrong_field_size(void);
15 #define STORE_LE(field, value) \
17 if (sizeof(field) == 4) \
18 field = SWAP_LE32(value); \
19 else if (sizeof(field) == 2) \
20 field = SWAP_LE16(value); \
21 else if (sizeof(field) == 1) \
24 BUG_wrong_field_size(); \
27 #define FETCH_LE32(field) \
28 (sizeof(field) == 4 ? SWAP_LE32(field) : BUG_wrong_field_size())
31 OPT_L = 1 << 0, // label
34 int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
35 int tune2fs_main(int argc UNUSED_PARAM, char **argv)
39 struct ext2_super_block *sb;
42 opt_complementary = "=1";
43 opts = getopt32(argv, "L:", &label);
44 argv += optind; // argv[0] -- device
50 fd = xopen(argv[0], O_RDWR);
51 xlseek(fd, 1024, SEEK_SET);
56 //STORE_LE(sb->s_wtime, time(NULL)); - why bother?
58 if (1 /*opts & OPT_L*/)
59 safe_strncpy((char *)sb->s_volume_name, label, sizeof(sb->s_volume_name));
61 xlseek(fd, 1024, SEEK_SET);
64 if (ENABLE_FEATURE_CLEAN_UP) {