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| author | Wang Shilong <wangsl.fnst@cn.fujitsu.com> | 2014-02-20 09:30:52 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-03-21 06:23:20 -0700 |
| commit | 64fddab8ac0ad7970cf713cfecba5ab6ae90b09c (patch) | |
| tree | 2687a0eb2c5810bfafe6314e0e9718f6e3d37e56 /btrfs-select-super.c | |
| parent | 86da12ff869823f4dae20488f3bedeae4a55086d (diff) | |
| download | btrfs-progs-64fddab8ac0ad7970cf713cfecba5ab6ae90b09c.tar.gz | |
Btrfs-progs: switch to arg_strtou64() part3
Switch to new helper arg_strtou64(), also check if user assign
a valid super copy.
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'btrfs-select-super.c')
| -rw-r--r-- | btrfs-select-super.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/btrfs-select-super.c b/btrfs-select-super.c index 6a458b8..15e6921 100644 --- a/btrfs-select-super.c +++ b/btrfs-select-super.c @@ -43,7 +43,7 @@ int main(int ac, char **av) { struct btrfs_root *root; int ret; - int num = 0; + u64 num = 0; u64 bytenr = 0; while(1) { @@ -53,8 +53,14 @@ int main(int ac, char **av) break; switch(c) { case 's': - num = atol(optarg); - bytenr = btrfs_sb_offset(num); + num = arg_strtou64(optarg); + if (num >= BTRFS_SUPER_MIRROR_MAX) { + fprintf(stderr, + "ERROR: super mirror should be less than: %d\n", + BTRFS_SUPER_MIRROR_MAX); + exit(1); + } + bytenr = btrfs_sb_offset(((int)num)); break; default: print_usage(); |