projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| e9ce8d39 A |
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. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 9385eb3d A |
34 | #if defined(LIBC_SCCS) && !defined(lint) |
| 35 | static char sccsid[] = "@(#)inet_makeaddr.c 8.1 (Berkeley) 6/4/93"; | |
| 36 | #endif /* LIBC_SCCS and not lint */ | |
| 37 | #include <sys/cdefs.h> | |
| 38 | __FBSDID("$FreeBSD: src/lib/libc/net/inet_makeaddr.c,v 1.4 2002/03/22 21:52:29 obrien Exp $"); | |
| e9ce8d39 A |
39 | |
| 40 | #include <sys/param.h> | |
| 41 | #include <netinet/in.h> | |
| 42 | #include <arpa/inet.h> | |
| 43 | ||
| 44 | /* | |
| 45 | * Formulate an Internet address from network + host. Used in | |
| 46 | * building addresses stored in the ifnet structure. | |
| 47 | */ | |
| 48 | struct in_addr | |
| 49 | inet_makeaddr(net, host) | |
| 9385eb3d | 50 | in_addr_t net, host; |
| e9ce8d39 | 51 | { |
| 9385eb3d | 52 | in_addr_t addr; |
| e9ce8d39 A |
53 | |
| 54 | if (net < 128) | |
| 55 | addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST); | |
| 56 | else if (net < 65536) | |
| 57 | addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST); | |
| 58 | else if (net < 16777216L) | |
| 59 | addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST); | |
| 60 | else | |
| 61 | addr = net | host; | |
| 62 | addr = htonl(addr); | |
| 63 | return (*(struct in_addr *)&addr); | |
| 64 | } | |
| 9385eb3d A |
65 | |
| 66 | /* | |
| 67 | * Weak aliases for applications that use certain private entry points, | |
| 68 | * and fail to include <arpa/inet.h>. | |
| 69 | */ | |
| 70 | #undef inet_makeaddr | |
| 71 | __weak_reference(__inet_makeaddr, inet_makeaddr); |