11 static void do_setxid(void *p)
15 int ret = __syscall(c->nr, c->id, c->eid, c->sid);
17 /* If one thread fails to set ids after another has already
18 * succeeded, forcibly killing the process is the only safe
19 * thing to do. State is inconsistent and dangerous. Use
20 * SIGKILL because it is uncatchable. */
22 __syscall(SYS_kill, __syscall(SYS_getpid), SIGKILL);
27 int __setxid(int nr, int id, int eid, int sid)
29 /* ret is initially nonzero so that failure of the first thread does not
30 * trigger the safety kill above. */
31 struct ctx c = { .nr = nr, .id = id, .eid = eid, .sid = sid, .ret = 1 };
32 __synccall(do_setxid, &c);
33 return __syscall_ret(c.ret);