static int uv__make_pipe(int fds[2], int flags) {
#if HAVE_SYS_PIPE2
int fl;
fl = O_CLOEXEC;
if (flags & UV__F_NONBLOCK)
fl |= O_NONBLOCK;
if (sys_pipe2(fds, fl) == 0)
return 0;
if (errno != ENOSYS)
return -1;
/* errno == ENOSYS so maybe the kernel headers lied about
* the availability of pipe2(). This can happen if people
* build libuv against newer kernel headers than the kernel
* they actually run the software on.
*/
#endif
if (pipe(fds))
return -1;
uv__cloexec(fds[0], 1);
uv__cloexec(fds[1], 1);
if (flags & UV__F_NONBLOCK) {
uv__nonblock(fds[0], 1);
uv__nonblock(fds[1], 1);
}
return 0;
}
int pipe2(int pipefd[2], int flags)
{
return sys_pipe2(pipefd, flags);
}