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* sysdeps/mach/hurd/recvmsg.c: New file. * sysdeps/mach/hurd/sendmsg.c: New file.

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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 2001-07-29 12:26:40 +00:00
parent 7748f4b5d5
commit 5301af2d6d
3 changed files with 301 additions and 0 deletions
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@ -1,3 +1,8 @@
2001-07-29 Mark Kettenis <kettenis@gnu.org>
* sysdeps/mach/hurd/recvmsg.c: New file.
* sysdeps/mach/hurd/sendmsg.c: New file.
2001-07-27 Ulrich Drepper <drepper@redhat.com>
* version.h (VERSION): Bump to 2.2.4.

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sysdeps/mach/hurd/recvmsg.c Normal file
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/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <string.h>
#include <sys/socket.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <hurd/socket.h>
/* Receive a message as described by MESSAGE from socket FD.
Returns the number of bytes read or -1 for errors. */
ssize_t
__libc_recvmsg (int fd, struct msghdr *message, int flags)
{
error_t err;
addr_port_t aport;
char *data = NULL;
mach_msg_type_number_t len = 0;
mach_port_t *ports;
mach_msg_type_number_t nports;
char *cdata = NULL;
mach_msg_type_number_t clen = 0;
size_t amount;
char *buf;
int i;
/* Find the total number of bytes to be read. */
amount = 0;
for (i = 0; i < message->msg_iovlen; i++)
{
amount += message->msg_iov[i].iov_len;
/* As an optimization, we set the initial values of DATA and LEN
from the first non-empty iovec. This kicks-in in the case
where the whole packet fits into that iovec buffer. */
if (data == NULL && message->msg_iov[i].iov_len > 0)
{
data = message->msg_iov[i].iov_base;
len = message->msg_iov[i].iov_len;
}
}
buf = data;
if (err = HURD_DPORT_USE (fd, __socket_recv (port, &aport,
flags, &data, &len,
&ports, &nports,
&cdata, &clen,
&message->msg_flags, amount)))
return __hurd_dfail (fd, err);
if (message->msg_name != NULL)
{
char *buf = message->msg_name;
mach_msg_type_number_t buflen = message->msg_namelen;
int type;
err = __socket_whatis_address (aport, &type, &buf, &buflen);
if (err == EOPNOTSUPP)
/* If the protocol server can't tell us the address, just return a
zero-length one. */
{
buf = message->msg_name;
buflen = 0;
err = 0;
}
if (err)
{
__mach_port_deallocate (__mach_task_self (), aport);
return __hurd_dfail (fd, err);
}
if (message->msg_namelen > buflen)
message->msg_namelen = buflen;
if (buf != message->msg_name)
{
memcpy (message->msg_name, buf, message->msg_namelen);
__vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
}
if (buflen > 0)
((struct sockaddr *) message->msg_name)->sa_family = type;
}
__mach_port_deallocate (__mach_task_self (), aport);
if (buf == data)
buf += len;
else
{
/* Copy the data into MSG. */
if (len > amount)
message->msg_flags |= MSG_TRUNC;
else
amount = len;
buf = data;
for (i = 0; i < message->msg_iovlen; i++)
{
#define min(a, b) ((a) > (b) ? (b) : (a))
size_t copy = min (message->msg_iov[i].iov_len, amount);
memcpy (message->msg_iov[i].iov_base, buf, copy);
buf += copy;
amount -= copy;
if (len == 0)
break;
}
__vm_deallocate (__mach_task_self (), (vm_address_t) data, len);
}
/* Copy the control message into MSG. */
if (clen > message->msg_controllen)
message->msg_flags |= MSG_CTRUNC;
else
message->msg_controllen = clen;
memcpy (message->msg_control, cdata, message->msg_controllen);
__vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
return (buf - data);
}
weak_alias (__libc_recvmsg, recvmsg)

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/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <hurd/ifsock.h>
#include <hurd/socket.h>
/* Send a message described MESSAGE on socket FD.
Returns the number of bytes sent, or -1 for errors. */
ssize_t
__libc_sendmsg (int fd, const struct msghdr *message, int flags)
{
error_t err = 0;
struct sockaddr_un *addr = message->msg_name;
socklen_t addr_len = message->msg_namelen;
addr_port_t aport = MACH_PORT_NULL;
char *data = NULL;
char data_buf[2048];
mach_msg_type_number_t len;
mach_msg_type_number_t amount;
int dealloc = 0;
int i;
/* Find the total number of bytes to be written. */
len = 0;
for (i = 0; i < message->msg_iovlen; i++)
{
if (message->msg_iov[i].iov_len > 0)
{
/* As an optimization, if we only have a single non-empty
iovec, we set DATA and LEN from it. */
if (len == 0)
data = message->msg_iov[i].iov_base;
else
data = NULL;
len += message->msg_iov[i].iov_len;
}
}
if (data == NULL)
{
size_t to_copy;
char *buf;
/* Allocate a temporary buffer to hold the data. For small
amounts of data, we allocate a buffer on the stack. Larger
amounts of data are stored in a page-aligned buffer. The
limit of 2048 bytes is inspired by the MiG stubs. */
if (len > 2048)
{
err = __vm_allocate (__mach_task_self (),
(vm_address_t *) &data, len, 1);
if (err)
{
__set_errno (err);
return -1;
}
dealloc = 1;
}
else
data = data_buf;
/* Copy the data into DATA. */
to_copy = len;
buf = data;
for (i = 0; i < len; i++)
{
#define min(a, b) ((a) > (b) ? (b) : (a))
size_t copy = min (message->msg_iov[i].iov_len, to_copy);
buf = __mempcpy (buf, message->msg_iov[i].iov_base, copy);
to_copy -= copy;
if (to_copy == 0)
break;
}
}
if (addr)
{
if (addr->sun_family == AF_LOCAL)
{
/* For the local domain, we must look up the name as a file
and talk to it with the ifsock protocol. */
file_t file = __file_name_lookup (addr->sun_path, 0, 0);
if (file == MACH_PORT_NULL)
return -1;
err = __ifsock_getsockaddr (file, &aport);
__mach_port_deallocate (__mach_task_self (), file);
if (err == MIG_BAD_ID || err == EOPNOTSUPP)
/* The file did not grok the ifsock protocol. */
err = ENOTSOCK;
if (err)
return __hurd_fail (err);
}
else
err = EIEIO;
}
err = HURD_DPORT_USE (fd,
({
if (err)
err = __socket_create_address (port,
addr->sun_family,
(char *) addr,
addr_len,
&aport);
if (! err)
{
/* Send the data. */
err = __socket_send (port, aport,
flags, data, len,
NULL,
MACH_MSG_TYPE_COPY_SEND, 0,
message->msg_control,
message->msg_controllen,
&amount);
__mach_port_deallocate (__mach_task_self (),
aport);
}
err;
}));
if (dealloc)
__vm_deallocate (__mach_task_self (), (vm_address_t) data, len);
return err ? __hurd_dfail (fd, err) : amount;
}
weak_alias (__libc_sendmsg, sendmsg)