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This is useful for Emacs. * modules/msvc-nothrow (configure.ac): Invoke gl_MODULE_INDICATOR. * lib/accept4.c: Include <io.h> as an alternative to msvc-nothrow.h. * lib/error.c: Likewise. * lib/fcntl.c: Likewise. * lib/flock.c: Likewise. * lib/fstat.c: Likewise. * lib/fsync.c: Likewise. * lib/ioctl.c: Likewise. * lib/isapipe.c: Likewise. * lib/lseek.c: Likewise. * lib/nonblocking.c: Likewise. * lib/poll.c: Likewise. * lib/select.c: Likewise. * lib/sockets.h: Likewise. * lib/sockets.c: Likewise. * lib/stdio-read.c: Likewise. * lib/stdio-write.c: Likewise. * lib/utimens.c: Likewise. * lib/w32sock.h: Likewise. * lib/w32spawn.h: Likewise. * tests/test-cloexec.c: Likewise. * tests/test-dup-safer.c: Likewise. * tests/test-dup2.c: Likewise. * tests/test-dup3.c: Likewise. * tests/test-fcntl.c: Likewise. * tests/test-pipe.c: Likewise. * tests/test-pipe2.c: Likewise. * lib/ftruncate.c: Likewise. (chsize_nothrow): Renamed from chsize. * lib/msvc-nothrow.c: Don't include msvc-inval.h if HAVE_MSVC_INVALID_PARAMETER_HANDLER is not defined. * lib/close.c: Likewise. * lib/dup.c: Likewise. * lib/fclose.c: Likewise. * lib/raise.c: Likewise. * tests/test-fgetc.c: Likewise. * tests/test-fputc.c: Likewise. * tests/test-fread.c: Likewise. * tests/test-fwrite.c: Likewise. * lib/getdtablesize.c: Likewise. (_setmaxstdio_nothrow): Renamed from _setmaxstdio. * lib/isatty.c: Don't include msvc-inval.h if HAVE_MSVC_INVALID_PARAMETER_HANDLER is not defined. Include <io.h> as an alternative to msvc-nothrow.h. * lib/read.c: Likewise. * lib/write.c: Likewise. * lib/dup2.c: Likewise. (dup2_nothrow): New function. (ms_windows_dup2): Use it. * m4/close.m4 (gl_FUNC_CLOSE): Invoke gl_MSVC_INVAL and test HAVE_MSVC_INVALID_PARAMETER_HANDLER only if gl_MSVC_INVAL is defined. * m4/dup.m4 (gl_FUNC_DUP): Likewise. * m4/fdopen.m4 (gl_FUNC_FDOPEN): Likewise. * m4/raise.m4 (gl_FUNC_RAISE): Likewise. * m4/read.m4 (gl_FUNC_READ): Likewise. * m4/write.m4 (gl_FUNC_WRITE): Likewise. * doc/windows-without-msvc.texi: New file. * doc/gnulib.texi (Native Windows Support without MSVC Support): New section.
109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/* Test of pipe.
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Copyright (C) 2009-2017 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <unistd.h>
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#include "signature.h"
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SIGNATURE_CHECK (pipe, int, (int[2]));
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#include <fcntl.h>
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#include <stdbool.h>
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* Get declarations of the native Windows API functions. */
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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/* Get _get_osfhandle. */
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# if GNULIB_MSVC_NOTHROW
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# include "msvc-nothrow.h"
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# else
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# include <io.h>
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# endif
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#endif
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#include "binary-io.h"
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#include "macros.h"
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/* Return true if FD is open. */
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static bool
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is_open (int fd)
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{
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* On native Windows, the initial state of unassigned standard file
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descriptors is that they are open but point to an
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INVALID_HANDLE_VALUE, and there is no fcntl. */
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return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
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#else
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# ifndef F_GETFL
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# error Please port fcntl to your platform
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# endif
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return 0 <= fcntl (fd, F_GETFL);
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#endif
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}
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/* Return true if FD is not inherited to child processes. */
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static bool
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is_cloexec (int fd)
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{
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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HANDLE h = (HANDLE) _get_osfhandle (fd);
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DWORD flags;
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ASSERT (GetHandleInformation (h, &flags));
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return (flags & HANDLE_FLAG_INHERIT) == 0;
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#else
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int flags;
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ASSERT ((flags = fcntl (fd, F_GETFD)) >= 0);
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return (flags & FD_CLOEXEC) != 0;
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#endif
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}
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/* Return true if FD is in non-blocking mode. */
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static bool
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is_nonblocking (int fd)
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{
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* We don't use the non-blocking mode for sockets here. */
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return 0;
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#else
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int flags;
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ASSERT ((flags = fcntl (fd, F_GETFL)) >= 0);
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return (flags & O_NONBLOCK) != 0;
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#endif
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}
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int
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main ()
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{
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int fd[2];
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fd[0] = -1;
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fd[1] = -1;
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ASSERT (pipe (fd) >= 0);
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ASSERT (fd[0] >= 0);
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ASSERT (fd[1] >= 0);
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ASSERT (fd[0] != fd[1]);
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ASSERT (is_open (fd[0]));
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ASSERT (is_open (fd[1]));
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ASSERT (!is_cloexec (fd[0]));
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ASSERT (!is_cloexec (fd[1]));
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ASSERT (!is_nonblocking (fd[0]));
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ASSERT (!is_nonblocking (fd[1]));
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return 0;
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}
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