2 * Amanda, The Advanced Maryland Automatic Network Disk Archiver
3 * Copyright (c) 1991-1999 University of Maryland at College Park
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that
9 * copyright notice and this permission notice appear in supporting
10 * documentation, and that the name of U.M. not be used in advertising or
11 * publicity pertaining to distribution of the software without specific,
12 * written prior permission. U.M. makes no representations about the
13 * suitability of this software for any purpose. It is provided "as is"
14 * without express or implied warranty.
16 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
18 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
21 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: James da Silva, Systems Design and Analysis Group
24 * Computer Science Department
25 * University of Maryland at College Park
28 * $Id: dgram.h,v 1.15 2006/05/25 01:47:11 johnfranks Exp $
30 * interface for datagram module
38 * Maximum datagram (UDP packet) we can generate. Size is limited by
39 * a 16 bit length field in an IPv4 header (65535), which must include
40 * the 24 byte IP header and the 8 byte UDP header.
42 #define MAX_DGRAM (((1<<16)-1)-24-8)
44 typedef struct dgram_s {
48 char data[MAX_DGRAM+1];
51 int dgram_bind(dgram_t *dgram, sa_family_t family, in_port_t *portp);
52 void dgram_socket(dgram_t *dgram, int sock);
53 int dgram_send_addr(struct sockaddr_storage *addr, dgram_t *dgram);
54 ssize_t dgram_recv(dgram_t *dgram, int timeout,
55 struct sockaddr_storage *fromaddr);
56 void dgram_zero(dgram_t *dgram);
57 int dgram_cat(dgram_t *dgram, const char *fmt, ...)
58 __attribute__ ((format (printf, 2, 3)));
59 void dgram_eatline(dgram_t *dgram);
61 #endif /* ! DGRAM_H */