1 /* Copyright (C) 1994, 1997, 1999, 2001, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include <sys/socket.h>
24 #include <hurd/socket.h>
26 /* Read N bytes into BUF through socket FD.
27 If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
28 the sender, and store the actual size of the address in *ADDR_LEN.
29 Returns the number of bytes read or -1 for errors. */
31 __recvfrom (fd, buf, n, flags, addrarg, addr_len)
36 __SOCKADDR_ARG addrarg;
42 mach_msg_type_number_t nread = n;
44 mach_msg_type_number_t nports;
46 mach_msg_type_number_t clen = 0;
47 struct sockaddr *addr = addrarg.__sockaddr__;
49 if (err = HURD_DPORT_USE (fd, __socket_recv (port, &addrport,
55 return __hurd_sockfail (fd, flags, err);
57 /* Get address data for the returned address port if requested. */
60 char *buf = (char *) addr;
61 mach_msg_type_number_t buflen = *addr_len;
64 err = __socket_whatis_address (addrport, &type, &buf, &buflen);
65 if (err == EOPNOTSUPP)
66 /* If the protocol server can't tell us the address, just return a
76 __mach_port_deallocate (__mach_task_self (), addrport);
77 return __hurd_sockfail (fd, flags, err);
80 if (*addr_len > buflen)
83 if (buf != (char *) addr)
85 memcpy (addr, buf, *addr_len);
86 __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
90 addr->sa_family = type;
93 __mach_port_deallocate (__mach_task_self (), addrport);
95 /* Toss control data; we don't care. */
96 __vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
100 memcpy (buf, bufp, nread);
101 __vm_deallocate (__mach_task_self (), (vm_address_t) bufp, nread);
107 weak_alias (__recvfrom, recvfrom)