1 #include <sys/types.h> 2 #include <unistd.h> 3 #include <errno.h> 4 5 /* 6 * BUG: never works 7 */ 8 9 int 10 setgid(gid_t gid) 11 { 12 errno = EPERM; 13 return -1; 14 } 15