-char *encode_label(void *alloc_ctx, const char *label)
-{
- char *str, *c;
- unsigned int i;
-
- /* the label can be expanded by up to four times */
- str = talloc_size(alloc_ctx, strlen(label) * 4 + 1);
- c = str;
-
- for (i = 0; i < strlen(label); i++) {
-
- if (label[i] == '/' || label[i] == '\\') {
- sprintf(c, "\\x%02x", label[i]);
- c += 4;
- continue;
- }
-
- *(c++) = label[i];
- }
-
- *c = '\0';
-
- return str;
-}
-
-char *parse_device_path(void *alloc_ctx,
- const char *dev_str, const char __attribute__((unused)) *cur_dev)
-{
- char *dev, *enc;
-
- if (is_prefix_ignorecase(dev_str, "uuid=")) {
- dev = talloc_asprintf(alloc_ctx, "/dev/disk/by-uuid/%s",
- dev_str + strlen("uuid="));
- return dev;
- }
-
- if (is_prefix_ignorecase(dev_str, "label=")) {
- enc = encode_label(NULL, dev_str + strlen("label="));
- dev = talloc_asprintf(alloc_ctx, "/dev/disk/by-label/%s", enc);
- talloc_free(enc);
- return dev;
- }
-
- /* normalise '/dev/foo' to 'foo' for easy comparisons, we'll expand
- * back before returning.
- */
- if (is_prefix(dev_str, "/dev/"))
- dev_str += strlen("/dev/");
-
- return join_paths(alloc_ctx, "/dev", dev_str);
-}
-
-const char *mountpoint_for_device(const char *dev)
-{
- int i;
-
- if (is_prefix(dev, "/dev/"))
- dev += strlen("/dev/");
-
- /* check existing entries in the map */
- for (i = 0; i < mount_map_size; i++)
- if (!strcmp(mount_map[i].dev, dev))
- return mount_map[i].mnt;
-
- /* no existing entry, create a new one */
- i = mount_map_size++;
- mount_map = talloc_realloc(NULL, mount_map,
- struct mount_map, mount_map_size);
-
- mount_map[i].dev = talloc_strdup(mount_map, dev);
- mount_map[i].mnt = join_paths(mount_map, DEVICE_MOUNT_BASE, dev);
- return mount_map[i].mnt;
-}
-
-char *resolve_path(void *alloc_ctx, const char *path, const char *current_dev)
-{
- static const char s_file[] = "file://";
- char *ret;
- const char *devpath, *sep;
-
- /* test for urls */
-
- if (!strncasecmp(path, s_file, sizeof(s_file) - 1))
- path += sizeof(s_file) - 1;
- else if (strstr(path, "://"))
- return talloc_strdup(alloc_ctx, path);
-
- sep = strchr(path, ':');
- if (!sep) {
- devpath = mountpoint_for_device(current_dev);
- ret = join_paths(alloc_ctx, devpath, path);
- } else {
- /* parse just the device name into dev */
- char *tmp, *dev;
- tmp = talloc_strndup(NULL, path, sep - path);
- dev = parse_device_path(NULL, tmp, current_dev);
-
- devpath = mountpoint_for_device(dev);
- ret = join_paths(alloc_ctx, devpath, sep + 1);
-
- talloc_free(dev);
- talloc_free(tmp);
- }
-
- return ret;
-}
-