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
= 0;
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
)