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super0: Use random_uuid() in init_super0() 

This shaves another 80 bytes off the mdadm binary.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
This commit is contained in:
Jes Sorensen 2016-08-15 15:48:56 -04:00
parent c5f71c2417
commit 055b766b1c
1 changed files with 6 additions and 10 deletions
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16
super0.c
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@ -752,16 +752,12 @@ static int init_super0(struct supertype *st, mdu_array_info_t *info,
sb->set_uuid2 = uuid[2];
sb->set_uuid3 = uuid[3];
} else {
int rfd = open("/dev/urandom", O_RDONLY);
if (rfd < 0 || read(rfd, &sb->set_uuid0, 4) != 4)
sb->set_uuid0 = random();
if (rfd < 0 || read(rfd, &sb->set_uuid1, 12) != 12) {
sb->set_uuid1 = random();
sb->set_uuid2 = random();
sb->set_uuid3 = random();
}
if (rfd >= 0)
close(rfd);
__u32 r[4];
random_uuid((__u8 *)r);
sb->set_uuid0 = r[0];
sb->set_uuid1 = r[1];
sb->set_uuid2 = r[2];
sb->set_uuid3 = r[3];
}
if (homehost && !uuid) {
char buf[20];