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* sysdeps/mach/hurd/recvmsg.c: New file. * sysdeps/mach/hurd/sendmsg.c: New file.
2001-07-29 Mark Kettenis <kettenis@gnu.org> * sysdeps/mach/hurd/recvmsg.c: New file. * sysdeps/mach/hurd/sendmsg.c: New file.
This commit is contained in:
Mark Kettenis
parent
7748f4b5d5
commit
5301af2d6d
@ -1,3 +1,8 @@
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2001-07-29 Mark Kettenis <kettenis@gnu.org>
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* sysdeps/mach/hurd/recvmsg.c: New file.
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* sysdeps/mach/hurd/sendmsg.c: New file.
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2001-07-27 Ulrich Drepper <drepper@redhat.com>
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* version.h (VERSION): Bump to 2.2.4.
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144
sysdeps/mach/hurd/recvmsg.c
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144
sysdeps/mach/hurd/recvmsg.c
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@ -0,0 +1,144 @@
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/* Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/socket.h>
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/* Receive a message as described by MESSAGE from socket FD.
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Returns the number of bytes read or -1 for errors. */
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ssize_t
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__libc_recvmsg (int fd, struct msghdr *message, int flags)
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{
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error_t err;
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addr_port_t aport;
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char *data = NULL;
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mach_msg_type_number_t len = 0;
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mach_port_t *ports;
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mach_msg_type_number_t nports;
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char *cdata = NULL;
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mach_msg_type_number_t clen = 0;
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size_t amount;
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char *buf;
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int i;
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/* Find the total number of bytes to be read. */
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amount = 0;
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for (i = 0; i < message->msg_iovlen; i++)
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{
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amount += message->msg_iov[i].iov_len;
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/* As an optimization, we set the initial values of DATA and LEN
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from the first non-empty iovec. This kicks-in in the case
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where the whole packet fits into that iovec buffer. */
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if (data == NULL && message->msg_iov[i].iov_len > 0)
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{
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data = message->msg_iov[i].iov_base;
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len = message->msg_iov[i].iov_len;
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}
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}
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buf = data;
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if (err = HURD_DPORT_USE (fd, __socket_recv (port, &aport,
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flags, &data, &len,
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&ports, &nports,
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&cdata, &clen,
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&message->msg_flags, amount)))
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return __hurd_dfail (fd, err);
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if (message->msg_name != NULL)
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{
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char *buf = message->msg_name;
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mach_msg_type_number_t buflen = message->msg_namelen;
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int type;
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err = __socket_whatis_address (aport, &type, &buf, &buflen);
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if (err == EOPNOTSUPP)
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/* If the protocol server can't tell us the address, just return a
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zero-length one. */
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{
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buf = message->msg_name;
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buflen = 0;
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err = 0;
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}
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if (err)
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{
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__mach_port_deallocate (__mach_task_self (), aport);
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return __hurd_dfail (fd, err);
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}
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if (message->msg_namelen > buflen)
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message->msg_namelen = buflen;
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if (buf != message->msg_name)
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{
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memcpy (message->msg_name, buf, message->msg_namelen);
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__vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
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}
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if (buflen > 0)
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((struct sockaddr *) message->msg_name)->sa_family = type;
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}
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__mach_port_deallocate (__mach_task_self (), aport);
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if (buf == data)
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buf += len;
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else
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{
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/* Copy the data into MSG. */
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if (len > amount)
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message->msg_flags |= MSG_TRUNC;
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else
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amount = len;
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buf = data;
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for (i = 0; i < message->msg_iovlen; i++)
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{
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#define min(a, b) ((a) > (b) ? (b) : (a))
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size_t copy = min (message->msg_iov[i].iov_len, amount);
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memcpy (message->msg_iov[i].iov_base, buf, copy);
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buf += copy;
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amount -= copy;
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if (len == 0)
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break;
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}
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__vm_deallocate (__mach_task_self (), (vm_address_t) data, len);
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}
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/* Copy the control message into MSG. */
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if (clen > message->msg_controllen)
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message->msg_flags |= MSG_CTRUNC;
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else
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message->msg_controllen = clen;
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memcpy (message->msg_control, cdata, message->msg_controllen);
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__vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
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return (buf - data);
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}
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weak_alias (__libc_recvmsg, recvmsg)
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152
sysdeps/mach/hurd/sendmsg.c
Normal file
152
sysdeps/mach/hurd/sendmsg.c
Normal file
@ -0,0 +1,152 @@
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/* Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/ifsock.h>
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#include <hurd/socket.h>
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/* Send a message described MESSAGE on socket FD.
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Returns the number of bytes sent, or -1 for errors. */
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ssize_t
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__libc_sendmsg (int fd, const struct msghdr *message, int flags)
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{
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error_t err = 0;
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struct sockaddr_un *addr = message->msg_name;
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socklen_t addr_len = message->msg_namelen;
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addr_port_t aport = MACH_PORT_NULL;
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char *data = NULL;
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char data_buf[2048];
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mach_msg_type_number_t len;
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mach_msg_type_number_t amount;
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int dealloc = 0;
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int i;
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/* Find the total number of bytes to be written. */
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len = 0;
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for (i = 0; i < message->msg_iovlen; i++)
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{
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if (message->msg_iov[i].iov_len > 0)
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{
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/* As an optimization, if we only have a single non-empty
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iovec, we set DATA and LEN from it. */
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if (len == 0)
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data = message->msg_iov[i].iov_base;
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else
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data = NULL;
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len += message->msg_iov[i].iov_len;
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}
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}
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if (data == NULL)
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{
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size_t to_copy;
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char *buf;
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/* Allocate a temporary buffer to hold the data. For small
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amounts of data, we allocate a buffer on the stack. Larger
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amounts of data are stored in a page-aligned buffer. The
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limit of 2048 bytes is inspired by the MiG stubs. */
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if (len > 2048)
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{
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err = __vm_allocate (__mach_task_self (),
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(vm_address_t *) &data, len, 1);
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if (err)
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{
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__set_errno (err);
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return -1;
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}
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dealloc = 1;
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}
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else
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data = data_buf;
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/* Copy the data into DATA. */
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to_copy = len;
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buf = data;
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for (i = 0; i < len; i++)
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{
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#define min(a, b) ((a) > (b) ? (b) : (a))
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size_t copy = min (message->msg_iov[i].iov_len, to_copy);
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buf = __mempcpy (buf, message->msg_iov[i].iov_base, copy);
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to_copy -= copy;
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if (to_copy == 0)
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break;
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}
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}
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if (addr)
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{
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if (addr->sun_family == AF_LOCAL)
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{
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/* For the local domain, we must look up the name as a file
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and talk to it with the ifsock protocol. */
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file_t file = __file_name_lookup (addr->sun_path, 0, 0);
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if (file == MACH_PORT_NULL)
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return -1;
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err = __ifsock_getsockaddr (file, &aport);
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__mach_port_deallocate (__mach_task_self (), file);
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if (err == MIG_BAD_ID || err == EOPNOTSUPP)
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/* The file did not grok the ifsock protocol. */
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err = ENOTSOCK;
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if (err)
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return __hurd_fail (err);
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}
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else
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err = EIEIO;
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}
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err = HURD_DPORT_USE (fd,
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({
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if (err)
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err = __socket_create_address (port,
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addr->sun_family,
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(char *) addr,
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addr_len,
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&aport);
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if (! err)
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{
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/* Send the data. */
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err = __socket_send (port, aport,
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flags, data, len,
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NULL,
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MACH_MSG_TYPE_COPY_SEND, 0,
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message->msg_control,
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message->msg_controllen,
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&amount);
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__mach_port_deallocate (__mach_task_self (),
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aport);
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}
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err;
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}));
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if (dealloc)
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__vm_deallocate (__mach_task_self (), (vm_address_t) data, len);
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return err ? __hurd_dfail (fd, err) : amount;
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}
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weak_alias (__libc_sendmsg, sendmsg)
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