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cb690d1f0b
and res_* modules in a way that works for ELF. I moved the aliases out of res_stubs.c and into the individual modules where the entry points are defined. Weak aliases don't work in ELF unless that is the case. (Actually, I'm surprised it worked for a.out.) This should fix the undefined "inet_addr" and related symbols in various applications that fail to include <arpa/inet.h> or <resolv.h> as they are supposed to do.
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)inet_netof.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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/*
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* Return the network number from an internet
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* address; handles class a/b/c network #'s.
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*/
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u_long
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inet_netof(in)
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struct in_addr in;
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{
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register u_long i = ntohl(in.s_addr);
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if (IN_CLASSA(i))
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return (((i)&IN_CLASSA_NET) >> IN_CLASSA_NSHIFT);
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else if (IN_CLASSB(i))
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return (((i)&IN_CLASSB_NET) >> IN_CLASSB_NSHIFT);
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else
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return (((i)&IN_CLASSC_NET) >> IN_CLASSC_NSHIFT);
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}
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/*
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* Weak aliases for applications that use certain private entry points,
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* and fail to include <arpa/inet.h>.
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*/
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#undef inet_netof
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__weak_reference(__inet_netof, inet_netof);
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