* Definitely not safe.
*/
- mdp_super_t super;
+ void *super;
int fd, rv = 0;
+ struct supertype *st;
- fd = open(dev, O_RDWR);
+ fd = open(dev, O_RDWR|O_EXCL);
if (fd < 0) {
fprintf(stderr, Name ": Couldn't open %s for write - not zeroing\n",
dev);
return 1;
- }
- rv = load_super(fd, &super);
- if (force && rv >= 5)
- rv = 0; /* ignore bad data in superblock */
- switch(rv) {
- case 1:
- fprintf(stderr, Name ": cannot file device size for %s: %s\n",
- dev, strerror(errno));
- break;
- case 2:
- fprintf(stderr, Name ": %s is too small for md.\n", dev);
- break;
- case 3:
- case 4:
- fprintf(stderr, Name ": cannot access superblock on %s.\n", dev);
- break;
- case 5:
- case 6:
- fprintf(stderr, Name ": %s does not appear to have an MD superblock.\n", dev);
- break;
}
- if (!rv) {
- memset(&super, 0, sizeof(super));
- if (store_super(fd, &super)) {
+ st = guess_super(fd);
+ if (st == NULL) {
+ fprintf(stderr, Name ": Unrecognised md component device - %s\n", dev);
+ return 1;
+ }
+ rv = st->ss->load_super(st, fd, &super, dev);
+ if (force && rv >= 2)
+ rv = 0; /* ignore bad data in superblock */
+ if (rv== 0 || (force && rv >= 2)) {
+ mdu_array_info_t info;
+ info.major_version = -1; /* zero superblock */
+ free(super);
+ st->ss->init_super(st, &super, &info);
+ if (st->ss->store_super(st, fd, super)) {
fprintf(stderr, Name ": Could not zero superblock on %s\n",
dev);
rv = 1;
+ } else if (rv) {
+ fprintf(stderr, Name ": superblock zeroed anyway\n");
+ rv = 0;
}
}
close(fd);