C++ check_argc_exact函数代码示例

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本文整理汇总了C++中check_argc_exact函数的典型用法代码示例。如果您正苦于以下问题：C++ check_argc_exact函数的具体用法？C++ check_argc_exact怎么用？C++ check_argc_exact使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了check_argc_exact函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: main

int main(int argc, char **argv)
{
	int c;
	unsigned long checksum = 0;
	char *str;
	char *buf;
	int length = 10;
	u64 seed = 0;
	int loop = 0;
	int i;

	while ((c = getopt(argc, argv, "l:c:s:h")) != -1) {
		switch (c) {
		case 'l':
			length = atol(optarg);
			break;
		case 'c':
			sscanf(optarg, "%li", &checksum);
			loop = 1;
			break;
		case 's':
			seed = atoll(optarg);
			break;
		case 'h':
			print_usage(1);
		case '?':
			print_usage(255);
		}
	}

	set_argv0(argv);
	str = argv[optind];

	if (!loop) {
		if (check_argc_exact(argc - optind, 1))
			print_usage(255);

		printf("%12u - %s\n", crc32c(~1, str, strlen(str)), str);
		return 0;
	}
	if (check_argc_exact(argc - optind, 0))
		print_usage(255);

	buf = malloc(length);
	if (!buf)
		return -ENOMEM;
	if (seed)
		init_rand_seed(seed);

	while (1) {
		for (i = 0; i < length; i++)
			buf[i] = rand_range(94) + 33;
		if (crc32c(~1, buf, length) == checksum)
			printf("%12lu - %.*s\n", checksum, length, buf);
	}

	return 0;
}

开发者ID:KuronekoDungeon，项目名称:android_external_btrfsprogs，代码行数:58，代码来源:btrfs-crc.c

示例2: cmd_balance_pause

static int cmd_balance_pause(int argc, char **argv)
{
	const char *path;
	int fd;
	int ret;
	int e;
	DIR *dirstream = NULL;

	if (check_argc_exact(argc, 2))
		usage(cmd_balance_pause_usage);

	path = argv[1];

	fd = open_file_or_dir(path, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", path);
		return 1;
	}

	ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE);
	e = errno;
	close_file_or_dir(fd, dirstream);

	if (ret < 0) {
		fprintf(stderr, "ERROR: balance pause on '%s' failed - %s\n",
			path, (e == ENOTCONN) ? "Not running" : strerror(e));
		if (e == ENOTCONN)
			return 2;
		else
			return 1;
	}

	return 0;
}

开发者ID:B-Rich，项目名称:btrfs-progs，代码行数:34，代码来源:cmds-balance.c

示例3: cmd_inspect_subvolid_resolve

static int cmd_inspect_subvolid_resolve(int argc, char **argv)
{
	int ret;
	int fd = -1;
	u64 subvol_id;
	char path[PATH_MAX];
	DIR *dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_inspect_subvolid_resolve_usage);

	if (check_argc_exact(argc - optind, 2))
		usage(cmd_inspect_subvolid_resolve_usage);

	fd = btrfs_open_dir(argv[optind + 1], &dirstream, 1);
	if (fd < 0) {
		ret = -ENOENT;
		goto out;
	}

	subvol_id = arg_strtou64(argv[optind]);
	ret = btrfs_subvolid_resolve(fd, path, sizeof(path), subvol_id);

	if (ret) {
		error("resolving subvolid %llu error %d",
			(unsigned long long)subvol_id, ret);
		goto out;
	}

	path[PATH_MAX - 1] = '\0';
	printf("%s\n", path);

out:
	close_file_or_dir(fd, dirstream);
	return ret ? 1 : 0;
}

开发者ID:devimc，项目名称:btrfs-progs，代码行数:35，代码来源:cmds-inspect.c

示例4: qgroup_create

static int qgroup_create(int create, int argc, char **argv)
{
	int ret = 0;
	int fd;
	int e;
	char *path = argv[2];
	struct btrfs_ioctl_qgroup_create_args args;
	DIR *dirstream = NULL;

	if (check_argc_exact(argc, 3))
		return -1;

	memset(&args, 0, sizeof(args));
	args.create = create;
	args.qgroupid = parse_qgroupid(argv[1]);

	fd = open_file_or_dir(path, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", path);
		return 1;
	}

	ret = ioctl(fd, BTRFS_IOC_QGROUP_CREATE, &args);
	e = errno;
	close_file_or_dir(fd, dirstream);
	if (ret < 0) {
		fprintf(stderr, "ERROR: unable to %s quota group: %s\n",
			create ? "create":"destroy", strerror(e));
		return 1;
	}
	return 0;
}

开发者ID:chrestomanci，项目名称:btrfs-progs，代码行数:32，代码来源:cmds-qgroup.c

示例5: cmd_subvol_set_default

static int cmd_subvol_set_default(int argc, char **argv)
{
	int	ret=0, fd, e;
	u64	objectid;
	char	*path;
	char	*subvolid;
	DIR	*dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_subvol_set_default_usage);

	if (check_argc_exact(argc - optind, 2))
		usage(cmd_subvol_set_default_usage);

	subvolid = argv[optind];
	path = argv[optind + 1];

	objectid = arg_strtou64(subvolid);

	fd = btrfs_open_dir(path, &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
	e = errno;
	close_file_or_dir(fd, dirstream);
	if (ret < 0) {
		error("unable to set a new default subvolume: %s",
			strerror(e));
		return 1;
	}
	return 0;
}

开发者ID:goldwynr，项目名称:btrfs-progs，代码行数:32，代码来源:cmds-subvolume.c

示例6: cmd_inspect_rootid

static int cmd_inspect_rootid(int argc, char **argv)
{
	int ret;
	int fd = -1;
	u64 rootid;
	DIR *dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_inspect_rootid_usage);

	if (check_argc_exact(argc - optind, 1))
		usage(cmd_inspect_rootid_usage);

	fd = btrfs_open_dir(argv[optind], &dirstream, 1);
	if (fd < 0) {
		ret = -ENOENT;
		goto out;
	}

	ret = lookup_ino_rootid(fd, &rootid);
	if (ret) {
		error("rootid failed with ret=%d", ret);
		goto out;
	}

	printf("%llu\n", (unsigned long long)rootid);
out:
	close_file_or_dir(fd, dirstream);

	return !!ret;
}

开发者ID:devimc，项目名称:btrfs-progs，代码行数:30，代码来源:cmds-inspect.c

示例7: cmd_inspect_inode_resolve

static int cmd_inspect_inode_resolve(int argc, char **argv)
{
	int fd;
	int verbose = 0;
	int ret;
	DIR *dirstream = NULL;

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

		switch (c) {
		case 'v':
			verbose = 1;
			break;
		default:
			usage(cmd_inspect_inode_resolve_usage);
		}
	}

	if (check_argc_exact(argc - optind, 2))
		usage(cmd_inspect_inode_resolve_usage);

	fd = btrfs_open_dir(argv[optind + 1], &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = __ino_to_path_fd(arg_strtou64(argv[optind]), fd, verbose,
			       argv[optind+1]);
	close_file_or_dir(fd, dirstream);
	return !!ret;

}

开发者ID:devimc，项目名称:btrfs-progs，代码行数:35，代码来源:cmds-inspect.c

示例8: cmd_balance_cancel

static int cmd_balance_cancel(int argc, char **argv)
{
	const char *path;
	int fd;
	int ret;
	int e;

	if (check_argc_exact(argc, 2))
		usage(cmd_balance_cancel_usage);

	path = argv[1];

	fd = open_file_or_dir(path);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access to '%s'\n", path);
		return 12;
	}

	ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL);
	e = errno;
	close(fd);

	if (ret < 0) {
		fprintf(stderr, "ERROR: balance cancel on '%s' failed - %s\n",
			path, (e == ENOTCONN) ? "Not in progress" : strerror(e));
		return 19;
	}

	return 0;
}

开发者ID:chyyuu，项目名称:ski-fsstress，代码行数:30，代码来源:cmds-balance.c

示例9: _cmd_qgroup_create

static int _cmd_qgroup_create(int create, int argc, char **argv)
{
	int ret = 0;
	int fd;
	int e;
	char *path;
	struct btrfs_ioctl_qgroup_create_args args;
	DIR *dirstream = NULL;

	if (check_argc_exact(argc - optind, 2))
		return -1;

	memset(&args, 0, sizeof(args));
	args.create = create;
	args.qgroupid = parse_qgroupid(argv[optind]);
	path = argv[optind + 1];

	fd = btrfs_open_dir(path, &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = ioctl(fd, BTRFS_IOC_QGROUP_CREATE, &args);
	e = errno;
	close_file_or_dir(fd, dirstream);
	if (ret < 0) {
		error("unable to %s quota group: %s",
			create ? "create":"destroy", strerror(e));
		return 1;
	}
	return 0;
}

开发者ID:KuronekoDungeon，项目名称:android_external_btrfsprogs，代码行数:31，代码来源:cmds-qgroup.c

示例10: quota_ctl

static int quota_ctl(int cmd, int argc, char **argv)
{
	int ret = 0;
	int fd;
	int e;
	char *path = argv[1];
	struct btrfs_ioctl_quota_ctl_args args;
	DIR *dirstream = NULL;

	if (check_argc_exact(argc, 2))
		return -1;

	memset(&args, 0, sizeof(args));
	args.cmd = cmd;

	fd = open_file_or_dir(path, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", path);
		return 1;
	}

	ret = ioctl(fd, BTRFS_IOC_QUOTA_CTL, &args);
	e = errno;
	close_file_or_dir(fd, dirstream);
	if (ret < 0) {
		fprintf(stderr, "ERROR: quota command failed: %s\n",
			strerror(e));
		return 1;
	}
	return 0;
}

开发者ID:osandov，项目名称:btrfs-progs，代码行数:31，代码来源:cmds-quota.c

示例11: cmd_subvol_set_default

static int cmd_subvol_set_default(int argc, char **argv)
{
	int	ret=0, fd, e;
	u64	objectid;
	char	*path;
	char	*subvolid;
	DIR	*dirstream = NULL;

	if (check_argc_exact(argc, 3))
		usage(cmd_subvol_set_default_usage);

	subvolid = argv[1];
	path = argv[2];

	objectid = arg_strtou64(subvolid);

	fd = open_file_or_dir(path, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", path);
		return 1;
	}

	ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
	e = errno;
	close_file_or_dir(fd, dirstream);
	if (ret < 0) {
		fprintf(stderr, "ERROR: unable to set a new default subvolume - %s\n",
			strerror(e));
		return 1;
	}
	return 0;
}

开发者ID:osandov，项目名称:btrfs-progs，代码行数:32，代码来源:cmds-subvolume.c

示例12: cmd_balance_pause

static int cmd_balance_pause(int argc, char **argv)
{
	const char *path;
	int fd;
	int ret;
	DIR *dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_balance_pause_usage);

	if (check_argc_exact(argc - optind, 1))
		return 1;

	path = argv[optind];

	fd = btrfs_open_dir(path, &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE);
	if (ret < 0) {
		error("balance pause on '%s' failed: %s", path,
			(errno == ENOTCONN) ? "Not running" : strerror(errno));
		if (errno == ENOTCONN)
			ret = 2;
		else
			ret = 1;
	}

	close_file_or_dir(fd, dirstream);
	return ret;
}

开发者ID:kdave，项目名称:btrfs-progs，代码行数:31，代码来源:cmds-balance.c

示例13: main

int main(int ac, char **av)
{
	struct btrfs_root *root;
	struct btrfs_trans_handle *trans;
	int ret;

	set_argv0(av);
	if (check_argc_exact(ac, 2))
		print_usage();

	radix_tree_init();

	if((ret = check_mounted(av[1])) < 0) {
		fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
		goto out;
	} else if(ret) {
		fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
		ret = -EBUSY;
		goto out;
	}

	root = open_ctree(av[1], 0, OPEN_CTREE_WRITES);

	if (root == NULL)
		return 1;

	trans = btrfs_start_transaction(root, 1);
	btrfs_set_super_log_root(root->fs_info->super_copy, 0);
	btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
	btrfs_commit_transaction(trans, root);
	close_ctree(root);
out:
	return !!ret;
}

开发者ID:B-Rich，项目名称:btrfs-progs，代码行数:34，代码来源:btrfs-zero-log.c

示例14: cmd_balance_cancel

static int cmd_balance_cancel(int argc, char **argv)
{
	const char *path;
	int fd;
	int ret;
	int e;
	DIR *dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_balance_cancel_usage);

	if (check_argc_exact(argc - optind, 1))
		usage(cmd_balance_cancel_usage);

	path = argv[optind];

	fd = btrfs_open_dir(path, &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL);
	e = errno;
	close_file_or_dir(fd, dirstream);

	if (ret < 0) {
		error("balance cancel on '%s' failed: %s", path,
			(e == ENOTCONN) ? "Not in progress" : strerror(e));
		if (e == ENOTCONN)
			return 2;
		else
			return 1;
	}

	return 0;
}

开发者ID:devimc，项目名称:btrfs-progs，代码行数:34，代码来源:cmds-balance.c

示例15: cmd_subvol_get_default

static int cmd_subvol_get_default(int argc, char **argv)
{
	int fd = -1;
	int ret;
	char *subvol;
	struct btrfs_list_filter_set *filter_set;
	u64 default_id;
	DIR *dirstream = NULL;

	if (check_argc_exact(argc, 2))
		usage(cmd_subvol_get_default_usage);

	subvol = argv[1];
	fd = open_file_or_dir(subvol, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
		return 1;
	}

	ret = btrfs_list_get_default_subvolume(fd, &default_id);
	if (ret) {
		fprintf(stderr, "ERROR: can't perform the search - %s\n",
			strerror(errno));
		goto out;
	}

	ret = 1;
	if (default_id == 0) {
		fprintf(stderr, "ERROR: 'default' dir item not found\n");
		goto out;
	}

	/* no need to resolve roots if FS_TREE is default */
	if (default_id == BTRFS_FS_TREE_OBJECTID) {
		printf("ID 5 (FS_TREE)\n");
		ret = 0;
		goto out;
	}

	filter_set = btrfs_list_alloc_filter_set();
	btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
				default_id);

	/* by default we shall print the following columns*/
	btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
	btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
	btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
	btrfs_list_setup_print_column(BTRFS_LIST_PATH);

	ret = btrfs_list_subvols_print(fd, filter_set, NULL,
		BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);

	if (filter_set)
		btrfs_list_free_filter_set(filter_set);
out:
	close_file_or_dir(fd, dirstream);
	return !!ret;
}

开发者ID:osandov，项目名称:btrfs-progs，代码行数:58，代码来源:cmds-subvolume.c

示例16: cmd_subvol_get_default

static int cmd_subvol_get_default(int argc, char **argv)
{
	int fd = -1;
	int ret;
	char *subvol;
	struct btrfs_list_filter_set *filter_set;
	u64 default_id;
	DIR *dirstream = NULL;

	clean_args_no_options(argc, argv, cmd_subvol_get_default_usage);

	if (check_argc_exact(argc - optind, 1))
		usage(cmd_subvol_get_default_usage);

	subvol = argv[1];
	fd = btrfs_open_dir(subvol, &dirstream, 1);
	if (fd < 0)
		return 1;

	ret = btrfs_list_get_default_subvolume(fd, &default_id);
	if (ret) {
		error("failed to look up default subvolume: %s",
			strerror(errno));
		goto out;
	}

	ret = 1;
	if (default_id == 0) {
		error("'default' dir item not found");
		goto out;
	}

	/* no need to resolve roots if FS_TREE is default */
	if (default_id == BTRFS_FS_TREE_OBJECTID) {
		printf("ID 5 (FS_TREE)\n");
		ret = 0;
		goto out;
	}

	filter_set = btrfs_list_alloc_filter_set();
	btrfs_list_setup_filter(&filter_set, BTRFS_LIST_FILTER_ROOTID,
				default_id);

	/* by default we shall print the following columns*/
	btrfs_list_setup_print_column(BTRFS_LIST_OBJECTID);
	btrfs_list_setup_print_column(BTRFS_LIST_GENERATION);
	btrfs_list_setup_print_column(BTRFS_LIST_TOP_LEVEL);
	btrfs_list_setup_print_column(BTRFS_LIST_PATH);

	ret = btrfs_list_subvols_print(fd, filter_set, NULL,
		BTRFS_LIST_LAYOUT_DEFAULT, 1, NULL);

	if (filter_set)
		free(filter_set);
out:
	close_file_or_dir(fd, dirstream);
	return !!ret;
}

开发者ID:goldwynr，项目名称:btrfs-progs，代码行数:58，代码来源:cmds-subvolume.c

示例17: cmd_balance_resume

static int cmd_balance_resume(int argc, char **argv)
{
	struct btrfs_ioctl_balance_args args;
	const char *path;
	DIR *dirstream = NULL;
	int fd;
	int ret;
	int e;

	if (check_argc_exact(argc, 2))
		usage(cmd_balance_resume_usage);

	path = argv[1];

	fd = open_file_or_dir(path, &dirstream);
	if (fd < 0) {
		fprintf(stderr, "ERROR: can't access '%s'\n", path);
		return 1;
	}

	memset(&args, 0, sizeof(args));
	args.flags |= BTRFS_BALANCE_RESUME;

	ret = ioctl(fd, BTRFS_IOC_BALANCE_V2, &args);
	e = errno;
	close_file_or_dir(fd, dirstream);

	if (ret < 0) {
		if (e == ECANCELED) {
			if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
				fprintf(stderr, "balance paused by user\n");
			if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
				fprintf(stderr, "balance canceled by user\n");
		} else if (e == ENOTCONN || e == EINPROGRESS) {
			fprintf(stderr, "ERROR: balance resume on '%s' "
				"failed - %s\n", path,
				(e == ENOTCONN) ? "Not in progress" :
						  "Already running");
			if (e == ENOTCONN)
				return 2;
			else
				return 1;
		} else {
			fprintf(stderr,
"ERROR: error during balancing '%s' - %s\n"
"There may be more info in syslog - try dmesg | tail\n", path, strerror(e));
			return 1;
		}
	} else {
		printf("Done, had to relocate %llu out of %llu chunks\n",
		       (unsigned long long)args.stat.completed,
		       (unsigned long long)args.stat.considered);
	}

	return 0;
}

开发者ID:B-Rich，项目名称:btrfs-progs，代码行数:56，代码来源:cmds-balance.c

示例18: cmd_receive

int cmd_receive(int argc, char **argv)
{
	int c;
	char *tomnt = NULL;
	char *fromfile = NULL;
	struct btrfs_receive r;
	int receive_fd = fileno(stdin);
	u64 max_errors = 1;
	int ret;

	memset(&r, 0, sizeof(r));
	r.mnt_fd = -1;
	r.write_fd = -1;
	r.dest_dir_fd = -1;

	while ((c = getopt_long(argc, argv, "evf:", long_opts, NULL)) != -1) {
		switch (c) {
		case 'v':
			g_verbose++;
			break;
		case 'f':
			fromfile = optarg;
			break;
		case 'e':
			r.honor_end_cmd = 1;
			break;
		case 'E':
			max_errors = arg_strtou64(optarg);
			break;
		case '?':
		default:
			fprintf(stderr, "ERROR: receive args invalid.\n");
			return 1;
		}
	}

	if (check_argc_exact(argc - optind, 1))
		usage(cmd_receive_usage);

	tomnt = argv[optind];

	if (fromfile) {
		receive_fd = open(fromfile, O_RDONLY | O_NOATIME);
		if (receive_fd < 0) {
			fprintf(stderr, "ERROR: failed to open %s\n", fromfile);
			return 1;
		}
	}

	ret = do_receive(&r, tomnt, receive_fd, max_errors);

	return !!ret;
}

开发者ID:B-Rich，项目名称:btrfs-progs，代码行数:53，代码来源:cmds-receive.c

示例19: cmd_balance_resume

static int cmd_balance_resume(int argc, char **argv)
{
	struct btrfs_ioctl_balance_args args;
	const char *path;
	DIR *dirstream = NULL;
	int fd;
	int ret;

	clean_args_no_options(argc, argv, cmd_balance_resume_usage);

	if (check_argc_exact(argc - optind, 1))
		return 1;

	path = argv[optind];

	fd = btrfs_open_dir(path, &dirstream, 1);
	if (fd < 0)
		return 1;

	memset(&args, 0, sizeof(args));
	args.flags |= BTRFS_BALANCE_RESUME;

	ret = ioctl(fd, BTRFS_IOC_BALANCE_V2, &args);
	if (ret < 0) {
		if (errno == ECANCELED) {
			if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
				fprintf(stderr, "balance paused by user\n");
			if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
				fprintf(stderr, "balance canceled by user\n");
		} else if (errno == ENOTCONN || errno == EINPROGRESS) {
			error("balance resume on '%s' failed: %s", path,
				(errno == ENOTCONN) ? "Not in progress" :
						  "Already running");
			if (errno == ENOTCONN)
				ret = 2;
			else
				ret = 1;
		} else {
			error("error during balancing '%s': %m\n"
			  "There may be more info in syslog - try dmesg | tail",
				path);
			ret = 1;
		}
	} else {
		printf("Done, had to relocate %llu out of %llu chunks\n",
		       (unsigned long long)args.stat.completed,
		       (unsigned long long)args.stat.considered);
	}

	close_file_or_dir(fd, dirstream);
	return ret;
}

开发者ID:kdave，项目名称:btrfs-progs，代码行数:52，代码来源:cmds-balance.c

示例20: cmd_rescue_chunk_recover

int cmd_rescue_chunk_recover(int argc, char *argv[])
{
	int ret = 0;
	char *file;
	int yes = 0;
	int verbose = 0;

	while (1) {
		int c = getopt(argc, argv, "yvh");
		if (c < 0)
			break;
		switch (c) {
		case 'y':
			yes = 1;
			break;
		case 'v':
			verbose = 1;
			break;
		case 'h':
		default:
			usage(cmd_rescue_chunk_recover_usage);
		}
	}

	argc = argc - optind;
	if (check_argc_exact(argc, 1))
		usage(cmd_rescue_chunk_recover_usage);

	file = argv[optind];

	ret = check_mounted(file);
	if (ret < 0) {
		fprintf(stderr, "Could not check mount status: %s\n",
			strerror(-ret));
		return 1;
	} else if (ret) {
		fprintf(stderr, "the device is busy\n");
		return 1;
	}

	ret = btrfs_recover_chunk_tree(file, verbose, yes);
	if (!ret) {
		fprintf(stdout, "Recover the chunk tree successfully.\n");
	} else if (ret > 0) {
		ret = 0;
		fprintf(stdout, "Abort to rebuild the on-disk chunk tree.\n");
	} else {
		fprintf(stdout, "Fail to recover the chunk tree.\n");
	}
	return ret;
}

开发者ID:asj，项目名称:btrfs-progs，代码行数:51，代码来源:cmds-rescue.c

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