64 lines
1.9 KiB
C
64 lines
1.9 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 are permitted
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* provided that: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)herror.c 6.5 (Berkeley) 6/1/90";
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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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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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herror(s)
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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 = 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(2, iov, (v - iov) + 1);
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}
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