18 lines · c
1#define _GNU_SOURCE2#include <sys/types.h>3#include <sys/stat.h>4#include <fcntl.h>5#include <inttypes.h>6 7int 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