1 #define _GNU_SOURCE 2 #include <sys/types.h> 3 #include <sys/stat.h> 4 #include <fcntl.h> 5 #include <inttypes.h> 6 7 int main(void) 8 { 9 struct { 10 struct file_handle fh; 11 uint64_t cgroup_id; 12 } handle; 13 int mount_id; 14 15 name_to_handle_at(AT_FDCWD, "/", &handle.fh, &mount_id, 0); 16 return 0; 17 } 18