1 /* Create a pipe. 2 Copyright (C) 2009-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 This file is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 #include <config.h> 18 19 /* Specification. */ 20 #include <unistd.h> 21 22 #if defined _WIN32 && ! defined __CYGWIN__ 23 /* Native Windows API. */ 24 25 /* Get _pipe(). */ 26 # include <io.h> 27 28 /* Get _O_BINARY. */ 29 # include <fcntl.h> 30 31 int 32 pipe (int fd[2]) /* */ 33 { 34 /* Mingw changes fd to {-1,-1} on failure, but this violates 35 http://austingroupbugs.net/view.php?id=467 */ 36 int tmp[2]; 37 int result = _pipe (tmp, 4096, _O_BINARY); 38 if (!result) 39 { 40 fd[0] = tmp[0]; 41 fd[1] = tmp[1]; 42 } 43 return result; 44 } 45 46 #else 47 48 # error "This platform lacks a pipe function, and Gnulib doesn't provide a replacement. This is a bug in Gnulib." 49 50 #endif