// Get filesystem statistics
statfs(path, buf);
fstatfs(fd, buf);

// Commit filesystem caches to disk
sync();

// Commit caches of the filesystem containing the file referred to
// by the file descriptor `fd` to disk
syncfs(fd);

// Change root directory
chroot(path);

// Remove a watch from an inotify instance
inotify_rm_watch(fd, wd);
