gistfile1.txt

#include <stdio.h>
#include <glob.h>
#include <unistd.h>
#include <assert.h>

#define PATH_SIZE 1024
#define FD_PATH "/proc/%d/fd/*.*"

int main(int argc, char **argv) {
  int pid = getpid();

  char path[PATH_SIZE];
  sprintf(path, FD_PATH, pid);
  printf("%s\n", path);

  glob_t data;
  assert(glob(path, 0, NULL, &data) == 0);

  int i;
  for(i=0; i<data.gl_pathc; i++)
    printf("%s\n", data.gl_pathv[i]);

  globfree(&data);

  return 0;
}