1 #include <unistd.h>
2 #include <errno.h>
3 #include <fcntl.h>
4 #include "syscall.h"
5
pipe2(int fd[2],int flag)6 int 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 }
24