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fs-util: add API for fsync()ing parent dir of path

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This commit is contained in:
Lennart Poettering 2021-02-01 17:12:12 +01:00
parent 427c934fdb
commit 814a7e0345
2 changed files with 25 additions and 0 deletions
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24
src/basic/fs-util.c
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@ -1484,6 +1484,30 @@ int fsync_path_at(int at_fd, const char *path) {
return 0;
}
int fsync_parent_at(int at_fd, const char *path) {
_cleanup_close_ int opened_fd = -1;
if (isempty(path)) {
if (at_fd != AT_FDCWD)
return fsync_directory_of_file(at_fd);
opened_fd = open("..", O_RDONLY|O_DIRECTORY|O_CLOEXEC);
if (opened_fd < 0)
return -errno;
if (fsync(opened_fd) < 0)
return -errno;
return 0;
}
opened_fd = openat(at_fd, path, O_PATH|O_CLOEXEC|O_NOFOLLOW);
if (opened_fd < 0)
return -errno;
return fsync_directory_of_file(opened_fd);
}
int syncfs_path(int atfd, const char *path) {
_cleanup_close_ int fd = -1;

1
src/basic/fs-util.h
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@ -140,6 +140,7 @@ int unlinkat_deallocate(int fd, const char *name, UnlinkDeallocateFlags flags);
int fsync_directory_of_file(int fd);
int fsync_full(int fd);
int fsync_path_at(int at_fd, const char *path);
int fsync_parent_at(int at_fd, const char *path);
int syncfs_path(int atfd, const char *path);