C++ (Cpp) autodetect_object_types Examples

Example #1

File: cmds-property.c Project: KuronekoDungeon/android_external_btrfsprogs

static void parse_args(int argc, char **argv,
		       const char * const *usage_str,
		       int *types, char **object,
		       char **name, char **value, int min_nonopt_args)
{
	int ret;
	char *type_str = NULL;
	int max_nonopt_args = 1;

	optind = 1;
	while (1) {
		int c = getopt(argc, argv, "t:");
		if (c < 0)
			break;

		switch (c) {
		case 't':
			type_str = optarg;
			break;
		default:
			usage(usage_str);
		}
	}

	if (name)
		max_nonopt_args++;
	if (value)
		max_nonopt_args++;

	if (check_argc_min(argc - optind, min_nonopt_args) ||
	    check_argc_max(argc - optind, max_nonopt_args))
		usage(usage_str);

	*types = 0;
	if (type_str) {
		if (!strcmp(type_str, "s") || !strcmp(type_str, "subvol")) {
			*types = prop_object_subvol;
		} else if (!strcmp(type_str, "f") ||
			   !strcmp(type_str, "filesystem")) {
			*types = prop_object_root;
		} else if (!strcmp(type_str, "i") ||
			   !strcmp(type_str, "inode")) {
			*types = prop_object_inode;
		} else if (!strcmp(type_str, "d") ||
			   !strcmp(type_str, "device")) {
			*types = prop_object_dev;
		} else {
			error("invalid object type: %s", type_str);
			usage(usage_str);
		}
	}

	*object = argv[optind++];
	if (optind < argc)
		*name = argv[optind++];
	if (optind < argc)
		*value = argv[optind++];

	if (!*types) {
		ret = autodetect_object_types(*object, types);
		if (ret < 0) {
			error("failed to detect object type: %s",
				strerror(-ret));
			usage(usage_str);
		}
		if (!*types) {
			error("object is not a btrfs object: %s", *object);
			usage(usage_str);
		}
	}
}

Example #2

File: cmds-property.c Project: chandanr/btrfs-progs

static void parse_args(int argc, char **argv,
		       const char * const *usage_str,
		       int *types, char **object,
		       char **name, char **value)
{
	int ret;
	char *type_str = NULL;

	optind = 1;
	while (1) {
		int c = getopt(argc, argv, "t:");
		if (c < 0)
			break;

		switch (c) {
		case 't':
			type_str = optarg;
			break;
		default:
			usage(usage_str);
		}
	}

	*types = 0;
	if (type_str) {
		if (!strcmp(type_str, "s") || !strcmp(type_str, "subvol")) {
			*types = prop_object_subvol;
		} else if (!strcmp(type_str, "f") ||
			   !strcmp(type_str, "filesystem")) {
			*types = prop_object_root;
		} else if (!strcmp(type_str, "i") ||
			   !strcmp(type_str, "inode")) {
			*types = prop_object_inode;
		} else if (!strcmp(type_str, "d") ||
			   !strcmp(type_str, "device")) {
			*types = prop_object_dev;
		} else {
			fprintf(stderr, "ERROR: invalid object type.\n");
			usage(usage_str);
		}
	}

	if (object && optind < argc)
		*object = argv[optind++];
	if (name && optind < argc)
		*name = argv[optind++];
	if (value && optind < argc)
		*value = argv[optind++];

	if (optind != argc) {
		fprintf(stderr, "ERROR: invalid arguments.\n");
		usage(usage_str);
	}

	if (!*types && object && *object) {
		ret = autodetect_object_types(*object, types);
		if (ret < 0) {
			fprintf(stderr,
				"ERROR: failed to detect object type. %s\n",
				strerror(-ret));
			usage(usage_str);
		}
		if (!*types) {
			fprintf(stderr,
				"ERROR: object is not a btrfs object.\n");
			usage(usage_str);
		}
	}
}