1#include <unistd.h>
 2#include <signal.h>
 3#include "syscall.h"
 4#include "libc.h"
 5#include "lock.h"
 6#include "pthread_impl.h"
 7#include "aio_impl.h"
 8#include "fork_impl.h"
 9
10static void dummy(int x) { }
11weak_alias(dummy, __aio_atfork);
12
13void __post_Fork(int ret)
14{
15	if (!ret) {
16		pthread_t self = __pthread_self();
17		self->tid = __syscall(SYS_set_tid_address, &__thread_list_lock);
18		self->robust_list.off = 0;
19		self->robust_list.pending = 0;
20		self->next = self->prev = self;
21		__thread_list_lock = 0;
22		libc.threads_minus_1 = 0;
23		if (libc.need_locks) libc.need_locks = -1;
24	}
25	UNLOCK(__abort_lock);
26	if (!ret) __aio_atfork(1);
27}
28
29pid_t _Fork(void)
30{
31	pid_t ret;
32	sigset_t set;
33	__block_all_sigs(&set);
34	LOCK(__abort_lock);
35#ifdef SYS_fork
36	ret = __syscall(SYS_fork);
37#else
38	ret = __syscall(SYS_clone, SIGCHLD, 0);
39#endif
40	__post_Fork(ret);
41	__restore_sigs(&set);
42	return __syscall_ret(ret);
43}