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tune2fs: add support for -C MOUNT_COUNT. +40 bytes. Closes 3901.

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-09-11 20:08:12 +02:00
parent 223b9417b3
commit 46aa5e0859
1 changed files with 11 additions and 4 deletions
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15
e2fsprogs/tune2fs.c
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@ -28,12 +28,13 @@ do { \
(sizeof(field) == 4 ? SWAP_LE32(field) : BUG_wrong_field_size())
//usage:#define tune2fs_trivial_usage
//usage: "[-c MOUNT_CNT] "
//usage: "[-c MAX_MOUNT_COUNT] "
////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: "[-r reserved-blocks-count] [-u user] "
//usage: "[-C MOUNT_COUNT] "
//usage: "[-L LABEL] "
////usage: "[-M last-mounted-dir] [-O [^]feature[,...]] "
////usage: "[-T last-check-time] [-U UUID] "
@ -46,18 +47,19 @@ enum {
OPT_L = 1 << 0, // label
OPT_c = 1 << 1, // max mount count
OPT_i = 1 << 2, // check interval
OPT_C = 1 << 3, // current mount count
};
int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int tune2fs_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opts;
const char *label, *str_c, *str_i;
const char *label, *str_c, *str_i, *str_C;
struct ext2_super_block *sb;
int fd;
opt_complementary = "=1";
opts = getopt32(argv, "L:c:i:", &label, &str_c, &str_i);
opts = getopt32(argv, "L:c:i:C:", &label, &str_c, &str_i, &str_C);
if (!opts)
bb_show_usage();
argv += optind; // argv[0] -- device
@ -71,6 +73,11 @@ int tune2fs_main(int argc UNUSED_PARAM, char **argv)
// mangle superblock
//STORE_LE(sb->s_wtime, time(NULL)); - why bother?
if (opts & OPT_C) {
int n = xatoi_range(str_C, 1, 0xfffe);
STORE_LE(sb->s_mnt_count, (unsigned)n);
}
// set the label
if (opts & OPT_L)
safe_strncpy((char *)sb->s_volume_name, label, sizeof(sb->s_volume_name));