83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*
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* Copyright (c) 1987 Regents of the University of California.
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* 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[] = "from: @(#)herror.c 6.6 (Berkeley) 2/24/91";*/
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static char rcsid[] = "$Id: herror.c,v 1.2 1993/08/01 18:39:53 mycroft Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <string.h>
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char *h_errlist[] = {
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"Error 0",
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"Unknown host", /* 1 HOST_NOT_FOUND */
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"Host name lookup failure", /* 2 TRY_AGAIN */
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"Unknown server error", /* 3 NO_RECOVERY */
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"No address associated with name", /* 4 NO_ADDRESS */
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};
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int h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
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extern int h_errno;
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/*
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* herror --
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* print the error indicated by the h_errno value.
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*/
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void
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herror(s)
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const char *s;
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{
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struct iovec iov[4];
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register struct iovec *v = iov;
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if (s && *s) {
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v->iov_base = (char *)s;
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v->iov_len = strlen(s);
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v++;
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v->iov_base = ": ";
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v->iov_len = 2;
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v++;
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}
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v->iov_base = (u_int)h_errno < h_nerr ?
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h_errlist[h_errno] : "Unknown error";
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v->iov_len = strlen(v->iov_base);
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v++;
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v->iov_base = "\n";
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v->iov_len = 1;
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writev(STDERR_FILENO, iov, (v - iov) + 1);
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}
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