1#include <unistd.h>
 2#include <errno.h>
 3#include <fcntl.h>
 4#include "syscall.h"
 5
 6int pipe2(int fd[2], int flag)
 7{
 8	if (!flag) return pipe(fd);
 9	int ret = __syscall(SYS_pipe2, fd, flag);
10	if (ret != -ENOSYS) return __syscall_ret(ret);
11	if (flag & ~(O_CLOEXEC|O_NONBLOCK)) return __syscall_ret(-EINVAL);
12	ret = pipe(fd);
13	if (ret) return ret;
14	if (flag & O_CLOEXEC) {
15		__syscall(SYS_fcntl, fd[0], F_SETFD, FD_CLOEXEC);
16		__syscall(SYS_fcntl, fd[1], F_SETFD, FD_CLOEXEC);
17	}
18	if (flag & O_NONBLOCK) {
19		__syscall(SYS_fcntl, fd[0], F_SETFL, O_NONBLOCK);
20		__syscall(SYS_fcntl, fd[1], F_SETFL, O_NONBLOCK);
21	}
22	return 0;
23}