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/* Copyright (C) 1994-2023 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/socket.h>
#include <hurd.h>
#include <hurd/fd.h>
#include <hurd/socket.h>
#include <string.h>
#include <sysdep-cancel.h>
/* Read N bytes into BUF from socket FD.
Returns the number read or -1 for errors. */
ssize_t
__recv (int fd, void *buf, size_t n, int flags)
{
error_t err;
mach_port_t addrport;
char *bufp = buf;
mach_msg_type_number_t nread = n;
mach_port_t *ports;
mach_msg_type_number_t nports = 0;
char *cdata = NULL;
mach_msg_type_number_t clen = 0;
int cancel_oldtype;
cancel_oldtype = LIBC_CANCEL_ASYNC();
err = HURD_DPORT_USE_CANCEL (fd, __socket_recv (port, &addrport,
flags, &bufp, &nread,
&ports, &nports,
&cdata, &clen,
&flags,
n));
LIBC_CANCEL_RESET (cancel_oldtype);
if (err == MIG_BAD_ID || err == EOPNOTSUPP)
/* The file did not grok the socket protocol. */
err = ENOTSOCK;
if (err)
return __hurd_sockfail (fd, flags, err);
if (MACH_PORT_VALID (addrport))
__mach_port_deallocate (__mach_task_self (), addrport);
__vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
if (bufp != buf)
{
memcpy (buf, bufp, nread);
__vm_deallocate (__mach_task_self (), (vm_address_t) bufp, nread);
}
return nread;
}
libc_hidden_def (__recv)
weak_alias (__recv, recv)
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