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The Qbicc builder for the java.base JDK module
/*
* This code is based on OpenJDK source file(s) which contain the following copyright notice:
*
* ------
* Copyright (c) 2001, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
* ------
*
* This file may contain additional modifications which are Copyright (c) Red Hat and other
* contributors.
*/
package sun.nio.ch;
import static org.qbicc.runtime.CNative.*;
import static jdk.internal.sys.posix.Errno.*;
import static jdk.internal.sys.posix.NetinetIn.*;
import static jdk.internal.sys.posix.Poll.*;
import static jdk.internal.sys.posix.SysSocket.*;
import static jdk.internal.sys.posix.Unistd.*;
import static org.qbicc.runtime.stdc.Errno.*;
import java.io.FileDescriptor;
import java.io.IOException;
import java.net.BindException;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NoRouteToHostException;
import java.net.SocketException;
import org.qbicc.rt.annotation.Tracking;
import org.qbicc.runtime.Build;
import jdk.internal.sys.posix.Poll;
import jdk.internal.sys.posix.SysSocket;
@Tracking("src/java.base/unix/native/libnio/ch/Net.c")
class Net$_native {
private static void initIDs() {
}
static short pollinValue() {
if (Build.Target.isPosix()) {
return Poll.POLLIN.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
static short polloutValue() {
if (Build.Target.isPosix()) {
return Poll.POLLOUT.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
static short pollerrValue() {
if (Build.Target.isPosix()) {
return Poll.POLLERR.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
static short pollhupValue() {
if (Build.Target.isPosix()) {
return Poll.POLLHUP.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
static short pollnvalValue() {
if (Build.Target.isPosix()) {
return Poll.POLLNVAL.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
static short pollconnValue() {
if (Build.Target.isPosix()) {
return Poll.POLLOUT.shortValue();
} else {
throw new UnsupportedOperationException();
}
}
/*
* Returns 1 for Windows and -1 for Linux/Mac OS
*/
static int isExclusiveBindAvailable() {
if (Build.Target.isWindows()) {
return 1;
} else if (Build.Target.isLinux() || Build.Target.isMacOs()) {
return -1;
} else {
throw new UnsupportedOperationException();
}
}
private static boolean isIPv6Available0() {
return NetUtil$_aliases.ipv6_available();
}
private static boolean isReusePortAvailable0() {
return NetUtil$_aliases.reuseport_supported();
}
private static int socket0(boolean preferIPv6, boolean stream, boolean reuse,
boolean fastLoopback) throws IOException {
if (Build.Target.isPosix()) {
c_int fd;
c_int type = stream ? SOCK_STREAM : SOCK_DGRAM;
c_int domain = (isIPv6Available0() && preferIPv6) ? AF_INET6 : AF_INET;
fd = socket(domain, type, word(0));
if (fd.intValue() < 0) {
return Net$_patch.handleSocketError(errno);
}
if (domain == AF_INET6 && true /* TODO!! should be ipv4_available() */) {
c_int arg = auto(word(0));
c_int rc = setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, addr_of(arg).cast(), sizeof(arg).cast());
if (rc.intValue() < 0) {
close(fd);
throw new SocketException("Unable to set IPV6_V6ONLY");
}
}
if (reuse) {
c_int arg = auto(word(1));
c_int rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, addr_of(arg).cast(), sizeof(arg).cast());
if (rc.intValue() < 0) {
close(fd);
throw new SocketException("Unable to set SO_REUSEADDR");
}
}
if (Build.Target.isLinux()) {
if (type == SOCK_DGRAM) {
throw new UnsupportedOperationException("Finish SOCK_DRAM for linux");
/* TODO: define IP_MULTICAST_ALL in linux CNative
c_int arg = auto(word(0));
c_int level = (domain == AF_INET6) ? IPPROTO_IPV6 : IPPROTO_IP;
c_int rc = setsockopt(fd, level, IP_MULTICAST_ALL, addr_of(arg).cast(), sizeof(arg).cast());
if (rc.intValue() < 0 && errno != ENOPROTOOPT.intValue()) {
close(fd);
throw new SocketException("Unable to set IP_MULTICAST_ALL");
}
*/
}
if (domain == AF_INET6 && type == SOCK_DGRAM) {
c_int arg = auto(word(1));
c_int rc = setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, addr_of(arg).cast(), sizeof(arg).cast());
if (rc.intValue() < 0) {
close(fd);
throw new SocketException("Unable to set IPV6_MULTICAST_HOPS");
}
}
}
if (Build.Target.isMacOs()) {
/*
* Attempt to set SO_SNDBUF to a minimum size to allow sending large datagrams
* (net.inet.udp.maxdgram defaults to 9216).
*/
if (type == SOCK_DGRAM) {
c_int size = auto();
socklen_t arglen = auto(sizeof(size).cast());
c_int rc = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, addr_of(size).cast(), addr_of(arglen));
if (rc.intValue() == 0) {
c_int minSize = auto((domain == AF_INET6) ? word(65527) : word(65507));
if (size.intValue() < minSize.intValue()) {
setsockopt(fd, SOL_SOCKET, SO_SNDBUF, addr_of(minSize).cast(), sizeof(minSize).cast());
}
}
}
}
return fd.intValue();
} else {
throw new UnsupportedOperationException();
}
}
private static void bind0(FileDescriptor fd, boolean preferIPv6, boolean useExclBind, InetAddress iao, int port) throws IOException {
struct_sockaddr_in6 sa = auto(); // in OpenJDK, this local is a union of sockaddr, sockaddr_in, and sockaddr_in6. Pick the biggest....
c_int sa_len = auto();
if (NetUtil$_aliases.inetAddressToSockaddr(iao, port, addr_of(sa).cast(), addr_of(sa_len), preferIPv6).intValue() != 0) {
return;
}
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
if (NetUtil$_aliases.bind(cfd, addr_of(sa).cast(), sa_len).intValue() != 0) {
if (errno == EADDRINUSE.intValue() || errno == EADDRNOTAVAIL.intValue() || errno == EACCES.intValue()) {
throw new BindException("NioSocketError");
} else {
throw new SocketException("NioSocketError");
}
}
}
static void listen(FileDescriptor fd, int backlog) throws IOException {
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
if (SysSocket.listen(cfd, word(backlog)).intValue() < 0) {
if (errno == EACCES.intValue()) {
throw new BindException("NioSocketError");
} else {
throw new SocketException("NioSocketError");
}
}
}
public static int accept(FileDescriptor fd, FileDescriptor newfd, InetSocketAddress[] isaa) throws IOException {
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
struct_sockaddr_in6 sa = auto(); // in OpenJDK, this local is a union of sockaddr, sockaddr_in, and sockaddr_in6. Pick the biggest....
socklen_t sa_len = auto(sizeof(sa).cast());
int newfdInt;
/* accept connection but ignore ECONNABORTED */
for (;;) {
newfdInt = SysSocket.accept(cfd, addr_of(sa).cast(), addr_of(sa_len)).intValue();
if (newfdInt >= 0) {
break;
}
if (errno != ECONNABORTED.intValue()) {
break;
}
/* ECONNABORTED => restart accept */
}
if (newfdInt < 0) {
if (errno == EAGAIN.intValue() || errno == EWOULDBLOCK.intValue()) {
return IOStatus.UNAVAILABLE;
} else if (errno == EINTR.intValue()) {
return IOStatus.INTERRUPTED;
} else {
throw new IOException("Accept failed");
}
}
((FileDescriptor$_aliases)(Object)newfd).fd = newfdInt;
c_int remote_port = auto(word(0));
InetAddress remote_ia = NetUtil$_aliases.sockaddrToInetAddress(addr_of(sa).cast(), addr_of(remote_port));
InetSocketAddress isa = new InetSocketAddress(remote_ia, remote_port.intValue());
isaa[0] = isa;
return 1;
}
static void shutdown(FileDescriptor fd, int how) throws IOException {
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
c_int chow = switch(how) {
case Net.SHUT_RD -> SHUT_RD;
case Net.SHUT_WR -> SHUT_WR;
default -> SHUT_RDWR;
};
if (SysSocket.shutdown(cfd, chow).intValue() < 0) {
if (errno != ENOTCONN.intValue()) {
throw new SocketException();
}
}
}
private static int connect0(boolean preferIPv6, FileDescriptor fd, InetAddress remote, int remotePort) throws IOException {
struct_sockaddr_in6 sa = auto(); // in OpenJDK, this local is a union of sockaddr, sockaddr_in, and sockaddr_in6. Pick the biggest....
socklen_t sa_len = auto(sizeof(sa).cast());
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
if (NetUtil$_aliases.inetAddressToSockaddr(remote, remotePort, addr_of(sa).cast(), addr_of(sa_len).cast(), preferIPv6).isNonZero()) {
throw new SocketException("connect0");
}
c_int rv = SysSocket.connect(cfd, addr_of(sa).cast(), sa_len);
if (rv.isNonZero()) {
if (errno == EINPROGRESS.intValue()) {
return IOStatus.UNAVAILABLE;
} else if (errno == EINTR.intValue()) {
return IOStatus.INTERRUPTED;
} else if (errno == ECONNREFUSED.intValue() || errno == ETIMEDOUT.intValue() || errno == ENOTCONN.intValue()) {
throw new ConnectException();
} else if (errno == EHOSTUNREACH.intValue()) {
throw new NoRouteToHostException();
} else if (errno == EADDRINUSE.intValue() || errno == EADDRNOTAVAIL.intValue() || errno == EACCES.intValue()) {
throw new BindException();
} else {
throw new SocketException();
}
}
return 1;
}
private static int localPort(FileDescriptor fd) throws IOException {
struct_sockaddr_in6 sa = auto(); // in OpenJDK, this local is a union of sockaddr, sockaddr_in, and sockaddr_in6. Pick the biggest....
socklen_t sa_len = auto(sizeof(sa).cast());
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
c_int port = auto();
if (getsockname(cfd, addr_of(sa).cast(), addr_of(sa_len).cast()).intValue() < 0) {
if (Build.Target.isMacOs()) {
// TODO: port errorno == ECONNRESET adjustment in Net.c
}
throw new SocketException("NioSocketError");
}
return NetUtil$_aliases.getPortFromSockaddr(addr_of(sa).cast()).intValue();
}
private static InetAddress localInetAddress(FileDescriptor fd) throws IOException {
struct_sockaddr_in6 sa = auto(); // in OpenJDK, this local is a union of sockaddr, sockaddr_in, and sockaddr_in6. Pick the biggest....
socklen_t sa_len = auto(sizeof(sa).cast());
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
c_int port = auto();
if (getsockname(cfd, addr_of(sa).cast(), addr_of(sa_len).cast()).intValue() < 0) {
if (Build.Target.isMacOs()) {
// TODO: port errorno == ECONNRESET adjustment in Net.c
}
throw new SocketException("NioSocketError");
}
return NetUtil$_aliases.sockaddrToInetAddress(addr_of(sa).cast(), addr_of(port));
}
private static int getIntOption0(FileDescriptor fd, boolean mayNeedConversion, int level, int opt) throws IOException {
c_int result = auto();
struct_linger linger = auto();
c_char carg = auto();
ptr arg = auto(addr_of(result).cast());
socklen_t arglen = auto(sizeof(result).cast());
if (level == IPPROTO_IP.intValue() &&
(opt == IP_MULTICAST_TTL.intValue() || opt == IP_MULTICAST_LOOP.intValue())) {
arg = addr_of(carg).cast();
arglen = sizeof(carg).cast();
}
if (level == SOL_SOCKET.intValue() && opt == SO_LINGER.intValue()) {
arg = addr_of(linger).cast();
arglen = sizeof(linger).cast();
}
c_int rc;
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
if (mayNeedConversion) {
rc = NetUtil$_aliases.getSockOpt(cfd, word(level), word(opt), arg, addr_of(arglen).cast());
} else {
rc = getsockopt(cfd, word(level), word(opt), arg, addr_of(arglen));
}
if (rc.intValue() < 0) {
throw new SocketException("sun.nio.ch.Net.getIntOption");
}
if (level == IPPROTO_IP.intValue() &&
(opt == IP_MULTICAST_TTL.intValue() || opt == IP_MULTICAST_LOOP.intValue())) {
return carg.intValue();
}
if (level == SOL_SOCKET.intValue() && opt == SO_LINGER.intValue()) {
return linger.l_onoff.booleanValue() ? linger.l_linger.intValue() : -1;
}
return result.intValue();
}
private static void setIntOption0(FileDescriptor fd, boolean mayNeedConversion, int jlevel, int jopt, int jarg, boolean isIPv6) throws IOException {
struct_linger linger = auto();
c_char carg = auto();
c_int arg = auto(word(jarg));
c_int level = word(jlevel);
c_int opt = word(jopt);
/* Option value is an int except for a few specific cases */
ptr<@c_const ?> parg = addr_of(arg).cast();
socklen_t arglen = sizeof(arg).cast();
if (level == IPPROTO_IP && (opt == IP_MULTICAST_TTL || opt == IP_MULTICAST_LOOP)) {
parg = addr_of(carg).cast();
arglen = sizeof(carg).cast();
carg = arg.cast();
}
if (level == SOL_SOCKET && opt == SO_LINGER) {
parg = addr_of(linger).cast();
arglen = sizeof(linger).cast();
if (jarg >= 0) {
linger.l_onoff = word(1);
linger.l_linger = arg;
} else {
linger.l_onoff = word(0);
linger.l_linger = word(0);
}
}
c_int rc;
c_int cfd = word(((FileDescriptor$_aliases)(Object)fd).fd);
if (mayNeedConversion) {
rc = NetUtil$_aliases.setSockOpt(cfd, level, opt, parg, arglen.cast());
} else {
rc = setsockopt(cfd, level, opt, parg, arglen);
}
if (rc.intValue() < 0) {
throw new SocketException("sun.nio.ch.Net.setIntOption");
}
}
static int poll(FileDescriptor fd, int events, long timeout) throws IOException {
struct_pollfd pfd = auto();
pfd.fd = word(((FileDescriptor$_aliases) (Object) fd).fd);
pfd.events = word(events);
if (timeout < -1) {
timeout = -1;
} else if (timeout > Integer.MAX_VALUE) {
timeout = Integer.MAX_VALUE;
}
c_int rv = Poll.poll(addr_of(pfd), word(1), word(timeout));
if (rv.intValue() >= 0) {
return pfd.revents.intValue();
} else if (errno == EINTR.intValue()) {
return 0;
} else {
throw new SocketException();
}
}
}
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