cosmopolitan/libc/calls/pipe-nt.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ This program is free software; you can redistribute it and/or modify         │
│ it under the terms of the GNU General Public License as published by         │
│ the Free Software Foundation; version 2 of the License.                      │
│                                                                              │
│ This program is distributed in the hope that it will be useful, but          │
│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
│ General Public License for more details.                                     │
│                                                                              │
│ You should have received a copy of the GNU General Public License            │
│ along with this program; if not, write to the Free Software                  │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
│ 02110-1301 USA                                                               │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/nt/ipc.h"
#include "libc/nt/runtime.h"
#include "libc/sysv/consts/o.h"

textwindows int pipe$nt(int pipefd[2], unsigned flags) {
  int reader, writer;
  if ((reader = __getemptyfd()) == -1) return -1;
  if ((writer = __getemptyfd()) == -1) return -1;
  if (CreatePipe(&g_fds.p[reader].handle, &g_fds.p[writer].handle,
                 &kNtIsInheritable, 0)) {
    g_fds.p[reader].kind = kFdFile;
    g_fds.p[reader].flags = flags;
    g_fds.p[writer].kind = kFdFile;
    g_fds.p[writer].flags = flags;
    pipefd[0] = reader;
    pipefd[1] = writer;
    return 0;
  } else {
    return __winerr();
  }
}