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70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/* Copyright (C) 1992-2013 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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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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/* Put the address of the peer connected to socket FD into *ADDR
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(which is *LEN bytes long), and its actual length into *LEN. */
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int
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__getpeername (int fd, __SOCKADDR_ARG addrarg, socklen_t *len)
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{
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error_t err;
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mach_msg_type_number_t buflen = *len;
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int type;
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struct sockaddr *addr = addrarg.__sockaddr__;
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char *buf = (char *) addr;
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addr_port_t aport;
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if (err = HURD_DPORT_USE (fd, __socket_peername (port, &aport)))
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return __hurd_dfail (fd, err);
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err = __socket_whatis_address (aport, &type, &buf, &buflen);
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__mach_port_deallocate (__mach_task_self (), aport);
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if (err)
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return __hurd_dfail (fd, err);
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if (*len > buflen)
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*len = buflen;
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if (buf != (char *) addr)
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{
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memcpy (addr, buf, *len);
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__vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
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}
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const sa_family_t family = type;
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if (*len > offsetof (struct sockaddr, sa_family))
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{
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if (*len < (char *) (&addr->sa_family + 1) - (char *) addr)
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memcpy (&addr->sa_family, &family,
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*len - offsetof (struct sockaddr, sa_family));
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else
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addr->sa_family = family;
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}
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return 0;
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}
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weak_alias (__getpeername, getpeername)
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