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28f540f4 RM |
1 | /* |
2 | * Copyright (c) 1983, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
28f540f4 RM |
13 | * 4. Neither the name of the University nor the names of its contributors |
14 | * may be used to endorse or promote products derived from this software | |
15 | * without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
28 | */ | |
29 | ||
30 | #if defined(LIBC_SCCS) && !defined(lint) | |
31 | static char sccsid[] = "@(#)inet_makeaddr.c 8.1 (Berkeley) 6/4/93"; | |
32 | #endif /* LIBC_SCCS and not lint */ | |
33 | ||
34 | #include <sys/param.h> | |
35 | #include <netinet/in.h> | |
36 | #include <arpa/inet.h> | |
37 | ||
38 | /* | |
39 | * Formulate an Internet address from network + host. Used in | |
40 | * building addresses stored in the ifnet structure. | |
41 | */ | |
42 | struct in_addr | |
8ac5a76a | 43 | __inet_makeaddr(net, host) |
bf2cc5fb | 44 | in_addr_t net, host; |
28f540f4 | 45 | { |
f8df79db | 46 | struct in_addr in; |
28f540f4 RM |
47 | |
48 | if (net < 128) | |
f8df79db | 49 | in.s_addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); |
28f540f4 | 50 | else if (net < 65536) |
f8df79db | 51 | in.s_addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); |
28f540f4 | 52 | else if (net < 16777216L) |
f8df79db | 53 | in.s_addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); |
28f540f4 | 54 | else |
f8df79db UD |
55 | in.s_addr = net | host; |
56 | in.s_addr = htonl(in.s_addr); | |
57 | return in; | |
28f540f4 | 58 | } |
8ac5a76a JM |
59 | libc_hidden_def (__inet_makeaddr) |
60 | weak_alias (__inet_makeaddr, inet_makeaddr) |