blob: c36b4b6003af532305ac2b461616d219f11f31b2 [file] [log] [blame] [edit]
#include <sys/ipc.h>
#include <sys/stat.h>
key_t ftok(const char *path, int id)
{
struct stat st;
if (stat(path, &st) < 0) return -1;
return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24));
}