system/fd_util: remove unused library

Makefile.am

@@ -497,7 +497,6 @@ libsystem_a_SOURCES = \
 	src/system/FatalError.cxx src/system/FatalError.hxx \
 	src/system/FileDescriptor.cxx src/system/FileDescriptor.hxx \
 	src/system/UniqueFileDescriptor.hxx \
-	src/system/fd_util.c src/system/fd_util.h \
 	src/system/EventPipe.cxx src/system/EventPipe.hxx \
 	src/system/EventFD.cxx src/system/EventFD.hxx \
 	src/system/SignalFD.cxx src/system/SignalFD.hxx \

src/client/ClientNew.cxx

@@ -22,7 +22,6 @@
 #include "ClientList.hxx"
 #include "Partition.hxx"
 #include "Instance.hxx"
-#include "system/fd_util.h"
 #include "net/UniqueSocketDescriptor.hxx"
 #include "net/SocketAddress.hxx"
 #include "net/ToString.hxx"

src/event/ServerSocket.cxx

@@ -29,7 +29,6 @@
 #include "net/Resolver.hxx"
 #include "net/ToString.hxx"
 #include "event/SocketMonitor.hxx"
-#include "system/fd_util.h"
 #include "fs/AllocatedPath.hxx"
 #include "fs/FileSystem.hxx"
 #include "util/RuntimeError.hxx"

src/event/SocketMonitor.cxx

@@ -20,7 +20,6 @@
 #include "config.h"
 #include "SocketMonitor.hxx"
 #include "Loop.hxx"
-#include "system/fd_util.h"
 
 #include <assert.h>
 

src/output/plugins/httpd/HttpdOutputPlugin.cxx

@@ -30,7 +30,6 @@
 #include "net/ToString.hxx"
 #include "Page.hxx"
 #include "IcyMetaDataServer.hxx"
-#include "system/fd_util.h"
 #include "event/Call.hxx"
 #include "util/RuntimeError.hxx"
 #include "util/Domain.hxx"

src/system/fd_util.c

-/*
- * Copyright 2003-2017 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h" /* must be first for large file support */
-#include "fd_util.h"
-
-#include <assert.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#ifdef WIN32
-#include <ws2tcpip.h>
-#include <winsock2.h>
-#else
-#include <sys/socket.h>
-#endif
-
-#ifdef USE_EVENTFD
-#include <sys/eventfd.h>
-#endif
-
-#ifndef WIN32
-
-static int
-fd_mask_flags(int fd, int and_mask, int xor_mask)
-{
-	assert(fd >= 0);
-
-	const int old_flags = fcntl(fd, F_GETFD, 0);
-	if (old_flags < 0)
-		return old_flags;
-
-	const int new_flags = (old_flags & and_mask) ^ xor_mask;
-	if (new_flags == old_flags)
-		return old_flags;
-
-	return fcntl(fd, F_SETFD, new_flags);
-}
-
-#endif /* !WIN32 */
-
-int
-fd_set_cloexec(int fd, bool enable)
-{
-#ifndef WIN32
-	return fd_mask_flags(fd, ~FD_CLOEXEC, enable ? FD_CLOEXEC : 0);
-#else
-	(void)fd;
-	(void)enable;
-
-	return 0;
-#endif
-}
-
-#ifndef WIN32
-
-/**
- * Enables non-blocking mode for the specified file descriptor.  On
- * WIN32, this function only works for sockets.
- */
-static int
-fd_set_nonblock(int fd)
-{
-#ifdef WIN32
-	u_long val = 1;
-	return ioctlsocket(fd, FIONBIO, &val);
-#else
-	int flags;
-
-	assert(fd >= 0);
-
-	flags = fcntl(fd, F_GETFL);
-	if (flags < 0)
-		return flags;
-
-	return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
-#endif
-}
-
-#endif
-
-int
-pipe_cloexec_nonblock(int fd[2])
-{
-#ifdef WIN32
-	return _pipe(fd, 512, _O_BINARY);
-#else
-	int ret;
-
-#ifdef HAVE_PIPE2
-	ret = pipe2(fd, O_CLOEXEC|O_NONBLOCK);
-	if (ret >= 0 || errno != ENOSYS)
-		return ret;
-#endif
-
-	ret = pipe(fd);
-	if (ret >= 0) {
-		fd_set_cloexec(fd[0], true);
-		fd_set_cloexec(fd[1], true);
-
-		fd_set_nonblock(fd[0]);
-		fd_set_nonblock(fd[1]);
-	}
-
-	return ret;
-#endif
-}

src/system/fd_util.h

-/*
- * Copyright 2003-2017 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * This library provides easy helper functions for working with file
- * descriptors.  It has wrappers for taking advantage of Linux 2.6
- * specific features like O_CLOEXEC.
- *
- */
-
-#ifndef FD_UTIL_H
-#define FD_UTIL_H
-
-#include "check.h"
-
-#include <stdbool.h>
-#include <stddef.h>
-
-#ifndef WIN32
-#include <sys/types.h>
-#endif
-
-struct sockaddr;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int
-fd_set_cloexec(int fd, bool enable);
-
-/**
- * Wrapper for pipe(), which sets the CLOEXEC flag (atomically if
- * supported by the OS).
- *
- * On systems that supports it (everybody except for Windows), it also
- * sets the NONBLOCK flag.
- */
-int
-pipe_cloexec_nonblock(int fd[2]);
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif