[zbin] Fix check for existence of most recent output byte
[ipxe.git] / src / net / socket.c
1 /*
2 * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 */
19
20 FILE_LICENCE ( GPL2_OR_LATER );
21
22 #include <stddef.h>
23 #include <errno.h>
24 #include <ipxe/socket.h>
25
26 /** @file
27 *
28 * Sockets
29 *
30 */
31
32 /**
33 * Transcribe socket address
34 *
35 * @v sa Socket address
36 * @ret string Socket address string
37 */
38 const char * sock_ntoa ( struct sockaddr *sa ) {
39 struct sockaddr_converter *converter;
40
41 for_each_table_entry ( converter, SOCKADDR_CONVERTERS ) {
42 if ( converter->family == sa->sa_family )
43 return converter->ntoa ( sa );
44 }
45 return NULL;
46 }
47
48 /**
49 * Parse socket address
50 *
51 * @v string Socket address string
52 * @v sa Socket address to fill in
53 * @ret rc Return status code
54 */
55 int sock_aton ( const char *string, struct sockaddr *sa ) {
56 struct sockaddr_converter *converter;
57
58 for_each_table_entry ( converter, SOCKADDR_CONVERTERS ) {
59 if ( converter->aton ( string, sa ) == 0 ) {
60 sa->sa_family = converter->family;
61 return 0;
62 }
63 }
64 return -EINVAL;
65 }