5 #include "pthread_impl.h"
12 static void do_setxid(void *p)
16 int ret = -__syscall(c->nr, c->id, c->eid, c->sid);
18 /* If one thread fails to set ids after another has already
19 * succeeded, forcibly killing the process is the only safe
20 * thing to do. State is inconsistent and dangerous. Use
21 * SIGKILL because it is uncatchable. */
23 __syscall(SYS_kill, __syscall(SYS_getpid), SIGKILL);
28 int __setxid(int nr, int id, int eid, int sid)
30 /* err is initially nonzero so that failure of the first thread does not
31 * trigger the safety kill above. */
32 struct ctx c = { .nr = nr, .id = id, .eid = eid, .sid = sid, .err = -1 };
33 __synccall(do_setxid, &c);
35 if (c.err>0) errno = c.err;