vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/* Test of pipe.
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Copyright (C) 2009-2024 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 <https://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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#if 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 __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 __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 __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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