diff options
Diffstat (limited to 'libbtrfsutil/filesystem.c')
-rw-r--r-- | libbtrfsutil/filesystem.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libbtrfsutil/filesystem.c b/libbtrfsutil/filesystem.c new file mode 100644 index 00000000..dfd171bf --- /dev/null +++ b/libbtrfsutil/filesystem.c @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2018 Facebook + * + * This file is part of libbtrfsutil. + * + * libbtrfsutil is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * libbtrfsutil is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <errno.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <linux/btrfs.h> + +#include "btrfsutil_internal.h" + +PUBLIC enum btrfs_util_error btrfs_util_sync(const char *path) +{ + enum btrfs_util_error err; + int fd; + + fd = open(path, O_RDONLY); + if (fd == -1) + return BTRFS_UTIL_ERROR_OPEN_FAILED; + + err = btrfs_util_sync_fd(fd); + SAVE_ERRNO_AND_CLOSE(fd); + return err; +} + +PUBLIC enum btrfs_util_error btrfs_util_sync_fd(int fd) +{ + int ret; + + ret = ioctl(fd, BTRFS_IOC_SYNC, NULL); + if (ret == -1) + return BTRFS_UTIL_ERROR_SYNC_FAILED; + + return BTRFS_UTIL_OK; +} + +PUBLIC enum btrfs_util_error btrfs_util_start_sync(const char *path, + uint64_t *transid) +{ + enum btrfs_util_error err; + int fd; + + fd = open(path, O_RDONLY); + if (fd == -1) + return BTRFS_UTIL_ERROR_OPEN_FAILED; + + err = btrfs_util_start_sync_fd(fd, transid); + SAVE_ERRNO_AND_CLOSE(fd); + return err; +} + +PUBLIC enum btrfs_util_error btrfs_util_start_sync_fd(int fd, uint64_t *transid) +{ + int ret; + + ret = ioctl(fd, BTRFS_IOC_START_SYNC, transid); + if (ret == -1) + return BTRFS_UTIL_ERROR_START_SYNC_FAILED; + + return BTRFS_UTIL_OK; +} + +PUBLIC enum btrfs_util_error btrfs_util_wait_sync(const char *path, + uint64_t transid) +{ + enum btrfs_util_error err; + int fd; + + fd = open(path, O_RDONLY); + if (fd == -1) + return BTRFS_UTIL_ERROR_OPEN_FAILED; + + err = btrfs_util_wait_sync_fd(fd, transid); + SAVE_ERRNO_AND_CLOSE(fd); + return err; +} + +PUBLIC enum btrfs_util_error btrfs_util_wait_sync_fd(int fd, uint64_t transid) +{ + int ret; + + ret = ioctl(fd, BTRFS_IOC_WAIT_SYNC, &transid); + if (ret == -1) + return BTRFS_UTIL_ERROR_WAIT_SYNC_FAILED; + + return BTRFS_UTIL_OK; +} |