gistfile1.txt

#include <dirent.h>
#include <stdio.h>
#include <unistd.h>

int main() {
  DIR* dir = opendir(".");
  int ret = 0;
  char buf[4096];

  symlink("/root/v86d", "test");
  ret = readlinkat(dirfd(dir), "test", buf, sizeof(buf));
  printf("ret: %d\n", ret);
  unlink("test");

  closedir(dir);
  return 0;
}