X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fpaths.c;h=d95e359e9f170b6a69e925a9002bdbe512818ec3;hp=ef8a45f924c8fa658fd4c39330f40eaf485761b4;hb=5be946c;hpb=4e8b779626da98e2896efbb2df99b64f76e878f6;ds=sidebyside diff --git a/discover/paths.c b/discover/paths.c index ef8a45f..d95e359 100644 --- a/discover/paths.c +++ b/discover/paths.c @@ -13,135 +13,11 @@ #define DEVICE_MOUNT_BASE (LOCAL_STATE_DIR "/petitboot/mnt") -struct mount_map { - char *dev, *mnt; -}; - -static struct mount_map *mount_map; -static int mount_map_size; - -static int is_prefix(const char *str, const char *prefix) -{ - return !strncmp(str, prefix, strlen(prefix)); -} - -static int is_prefix_ignorecase(const char *str, const char *prefix) -{ - return !strncasecmp(str, prefix, strlen(prefix)); -} - const char *mount_base(void) { return DEVICE_MOUNT_BASE; } -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; -} - char *join_paths(void *alloc_ctx, const char *a, const char *b) { char *full_path; @@ -376,10 +252,10 @@ fail: } /** - * pb_load_file - Loads a (possibly) remote file and returns the local file + * load_url - Loads a (possibly) remote URL and returns the local file * path. * @ctx: The talloc context to associate with the returned string. - * @remote: The remote file URL. + * @URL: The remote file URL. * @tempfile: An optional variable pointer to be set when a temporary local * file is created. * @@ -387,9 +263,8 @@ fail: * or NULL on error. */ -char *load_file(void *ctx, const char *remote, unsigned int *tempfile) +char *load_url(void *ctx, struct pb_url *url, unsigned int *tempfile) { - struct pb_url *url = pb_url_parse(ctx, remote); char *local; int tmp = 0;