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 ret = pipe(fd);
12 if (ret) return ret;
13 #ifndef __EMSCRIPTEN__ // CLOEXEC makes no sense for a single process
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 #endif
19 if (flag & O_NONBLOCK) {
20 __syscall(SYS_fcntl, fd[0], F_SETFL, O_NONBLOCK);
21 __syscall(SYS_fcntl, fd[1], F_SETFL, O_NONBLOCK);
22 }
23 return 0;
24 }
25