1#include <unistd.h>
2#include <string.h>
3#include <signal.h>
4#include "syscall.h"
5#include "libc.h"
6#include "pthread_impl.h"
7
8static void dummy(int x)
9{
10}
11
12weak_alias(dummy, __fork_handler);
13
14pid_t fork(void)
15{
16	pid_t ret;
17	sigset_t set;
18	__fork_handler(-1);
19	__block_all_sigs(&set);
20#ifdef SYS_fork
21	ret = syscall(SYS_fork);
22#else
23	ret = syscall(SYS_clone, SIGCHLD, 0);
24#endif
25	if (!ret) {
26		pthread_t self = __pthread_self();
27		self->tid = __syscall(SYS_gettid);
28		self->robust_list.off = 0;
29		self->robust_list.pending = 0;
30		libc.threads_minus_1 = 0;
31	}
32	__restore_sigs(&set);
33	__fork_handler(!ret);
34	return ret;
35}
36