diff options
Diffstat (limited to 'e2fsprogs/tune2fs.c')
| -rw-r--r-- | e2fsprogs/tune2fs.c | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/e2fsprogs/tune2fs.c b/e2fsprogs/tune2fs.c index 311349f..75e4f6b 100644 --- a/e2fsprogs/tune2fs.c +++ b/e2fsprogs/tune2fs.c @@ -27,24 +27,40 @@ do { \ #define FETCH_LE32(field) \ (sizeof(field) == 4 ? SWAP_LE32(field) : BUG_wrong_field_size()) +//usage:#define tune2fs_trivial_usage +//usage: "[-c MOUNT_CNT] " +////usage: "[-e errors-behavior] [-g group] " +//usage: "[-i DAYS] " +////usage: "[-j] [-J journal-options] [-l] [-s sparse-flag] " +////usage: "[-m reserved-blocks-percent] [-o [^]mount-options[,...]] " +////usage: "[-r reserved-blocks-count] [-u user] [-C mount-count] " +//usage: "[-L LABEL] " +////usage: "[-M last-mounted-dir] [-O [^]feature[,...]] " +////usage: "[-T last-check-time] [-U UUID] " +//usage: "BLOCKDEV" +//usage: +//usage:#define tune2fs_full_usage "\n\n" +//usage: "Adjust filesystem options on ext[23] filesystems" + enum { OPT_L = 1 << 0, // label + OPT_c = 1 << 1, // max mount count + OPT_i = 1 << 2, // check interval }; int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int tune2fs_main(int argc UNUSED_PARAM, char **argv) { unsigned opts; - const char *label; + const char *label, *str_c, *str_i; struct ext2_super_block *sb; int fd; opt_complementary = "=1"; - opts = getopt32(argv, "L:", &label); - argv += optind; // argv[0] -- device - + opts = getopt32(argv, "L:c:i:", &label, &str_c, &str_i); if (!opts) bb_show_usage(); + argv += optind; // argv[0] -- device // read superblock fd = xopen(argv[0], O_RDWR); @@ -54,9 +70,23 @@ int tune2fs_main(int argc UNUSED_PARAM, char **argv) // mangle superblock //STORE_LE(sb->s_wtime, time(NULL)); - why bother? + // set the label - if (1 /*opts & OPT_L*/) + if (opts & OPT_L) safe_strncpy((char *)sb->s_volume_name, label, sizeof(sb->s_volume_name)); + + if (opts & OPT_c) { + int n = xatoi_range(str_c, -1, 0xfffe); + if (n == 0) + n = -1; + STORE_LE(sb->s_max_mnt_count, (unsigned)n); + } + + if (opts & OPT_i) { + unsigned n = xatou_range(str_i, 0, (unsigned)0xffffffff / (24*60*60)) * 24*60*60; + STORE_LE(sb->s_checkinterval, n); + } + // write superblock xlseek(fd, 1024, SEEK_SET); xwrite(fd, sb, 1024); |