*
* @return - zero on successful expand and env is set
*/
-static char extract_env(const char *str, char **env)
+static int extract_env(const char *str, char **env)
{
+ int ret = -1;
char *e, *s;
+#ifdef CONFIG_RANDOM_UUID
+ char uuid_str[UUID_STR_LEN + 1];
+#endif
if (!str || strlen(str) < 4)
return -1;
- if ((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')) {
- s = strdup(str);
- if (s == NULL)
- return -1;
- memset(s + strlen(s) - 1, '\0', 1);
- memmove(s, s + 2, strlen(s) - 1);
+ if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
+ return -1;
+
+ s = strdup(str);
+ if (s == NULL)
+ return -1;
+
+ memset(s + strlen(s) - 1, '\0', 1);
+ memmove(s, s + 2, strlen(s) - 1);
+
+ e = getenv(s);
+ if (e == NULL) {
+#ifdef CONFIG_RANDOM_UUID
+ debug("%s unset. ", str);
+ gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_STD);
+ setenv(s, uuid_str);
+
e = getenv(s);
- free(s);
- if (e == NULL) {
- printf("Environmental '%s' not set\n", str);
- return -1; /* env not set */
+ if (e) {
+ debug("Set to random.\n");
+ ret = 0;
+ } else {
+ debug("Can't get random UUID.\n");
}
- *env = e;
- return 0;
+#else
+ debug("%s unset.\n", str);
+#endif
+ } else {
+ debug("%s get from environment.\n", str);
+ ret = 0;
}
- return -1;
+ *env = e;
+ free(s);
+
+ return ret;
}
/**
char *val, *p;
int p_count;
disk_partition_t *parts;
+ char *guid_str;
int errno = 0;
uint64_t size_ll, start_ll;
/* extract disk guid */
s = str;
- tok = strsep(&s, ";");
- val = extract_val(tok, "uuid_disk");
+ val = extract_val(str, "uuid_disk");
if (!val) {
+#ifdef CONFIG_RANDOM_UUID
+ *str_disk_guid = malloc(UUID_STR_LEN + 1);
+ gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
+#else
free(str);
return -2;
- }
- if (extract_env(val, &p))
- p = val;
- *str_disk_guid = strdup(p);
- free(val);
+#endif
+ } else {
+ char *v = val;
+ v = strsep(&v, ";");
+ if (extract_env(v, &p))
+ p = v;
+ *str_disk_guid = strdup(p);
+ free(val);
+ /* Move s to first partition */
+ strsep(&s, ";");
+ }
if (strlen(s) == 0)
return -3;
/* uuid */
val = extract_val(tok, "uuid");
- if (!val) { /* 'uuid' is mandatory */
- errno = -4;
- goto err;
- }
- if (extract_env(val, &p))
- p = val;
- if (strlen(p) >= sizeof(parts[i].uuid)) {
- printf("Wrong uuid format for partition %d\n", i);
+ if (!val) {
+ /* 'uuid' is optional if random uuid's are enabled */
+#ifdef CONFIG_RANDOM_UUID
+ gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD);
+#else
errno = -4;
goto err;
+#endif
+ } else {
+ if (extract_env(val, &p))
+ p = val;
+ if (strlen(p) >= sizeof(parts[i].uuid)) {
+ printf("Wrong uuid format for partition %d\n", i);
+ errno = -4;
+ goto err;
+ }
+ strcpy((char *)parts[i].uuid, p);
+ free(val);
}
- strcpy((char *)parts[i].uuid, p);
- free(val);
-
/* name */
val = extract_val(tok, "name");
if (!val) { /* name is mandatory */
}
}
+ *str_disk_guid = guid_str;
*parts_count = p_count;
*partitions = parts;
free(str);
return 0;
+
err:
- free(str);
- free(*str_disk_guid);
free(parts);
+free_guid:
+ free(guid_str);
+free_str:
+ free(str);
+ *str_disk_guid = NULL;
+ *parts_count = 0;
+ *partitions = NULL;
return errno;
}
}
/* save partitions layout to disk */
- gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
+ ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
free(str_disk_guid);
free(partitions);
- return 0;
+ return ret;
}
/**
return CMD_RET_FAILURE;
}
- if (gpt_default(blk_dev_desc, argv[4]))
+ puts("Writing GPT: ");
+
+ ret = gpt_default(blk_dev_desc, argv[4]);
+ if (!ret) {
+ puts("success!\n");
+ return CMD_RET_SUCCESS;
+ } else {
+ puts("error!\n");
return CMD_RET_FAILURE;
+ }
} else {
return CMD_RET_USAGE;
}