static errcode_t parse_hashalg(struct super_set_info *info, char *arg)
{
int hashv;
unsigned char *p = (unsigned char *) info->ptr;
hashv = e2p_string2hash(arg);
if (hashv < 0) {
fprintf(stderr, "Invalid hash algorithm: %s\n", arg);
return EINVAL;
}
*p = hashv;
return 0;
}
void do_dx_hash(int argc, char *argv[])
{
ext2_dirhash_t hash, minor_hash;
errcode_t err;
int c;
int hash_version = 0;
__u32 hash_seed[4];
hash_seed[0] = hash_seed[1] = hash_seed[2] = hash_seed[3] = 0;
reset_getopt();
while ((c = getopt (argc, argv, "h:s:")) != EOF) {
switch (c) {
case 'h':
hash_version = e2p_string2hash(optarg);
if (hash_version < 0)
hash_version = atoi(optarg);
break;
case 's':
if (uuid_parse(optarg, (unsigned char *) hash_seed)) {
fprintf(stderr, "Invalid UUID format: %s\n",
optarg);
return;
}
break;
default:
goto print_usage;
}
}
if (optind != argc-1) {
print_usage:
com_err(argv[0], 0, "usage: dx_hash [-h hash_alg] "
"[-s hash_seed] filename");
return;
}
err = ext2fs_dirhash(hash_version, argv[optind], strlen(argv[optind]),
hash_seed, &hash, &minor_hash);
if (err) {
com_err(argv[0], err, "while caclulating hash");
return;
}
printf("Hash of %s is 0x%0x (minor 0x%0x)\n", argv[optind],
hash, minor_hash);
}
