43fa6fe319
identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* $NetBSD: inet_neta.c,v 1.6 1997/07/21 14:08:05 jtc Exp $ */
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/*
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* Copyright (c) 1996 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static const char rcsid[] = "$Id: inet_neta.c,v 8.2 1996/08/08 06:54:44 vixie Exp ";
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#else
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__RCSID("$NetBSD: inet_neta.c,v 1.6 1997/07/21 14:08:05 jtc Exp $");
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#endif
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#endif
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#include "namespace.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef __weak_alias
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__weak_alias(inet_neta,_inet_neta);
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#endif
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#ifdef SPRINTF_CHAR
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# define SPRINTF(x) strlen(sprintf/**/x)
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#else
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# define SPRINTF(x) ((size_t)sprintf x)
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#endif
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/*
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* char *
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* inet_neta(src, dst, size)
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* format a u_long network number into presentation format.
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* return:
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* pointer to dst, or NULL if an error occurred (check errno).
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* note:
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* format of ``src'' is as for inet_network().
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* author:
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* Paul Vixie (ISC), July 1996
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*/
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char *
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inet_neta(src, dst, size)
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u_long src;
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char *dst;
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size_t size;
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{
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char *odst = dst;
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char *tp;
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while (src & 0xffffffff) {
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u_char b = (src & 0xff000000) >> 24;
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src <<= 8;
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if (b) {
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if (size < sizeof "255.")
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goto emsgsize;
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tp = dst;
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dst += SPRINTF((dst, "%u", b));
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if (src != 0L) {
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*dst++ = '.';
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*dst = '\0';
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}
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size -= (size_t)(dst - tp);
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}
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}
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if (dst == odst) {
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if (size < sizeof "0.0.0.0")
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goto emsgsize;
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strcpy(dst, "0.0.0.0");
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}
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return (odst);
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emsgsize:
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errno = EMSGSIZE;
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return (NULL);
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}
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