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herror.c
Package: mysql-3.23.35.tar.gz [view]
Upload User: tsgydb
Upload Date: 2007-04-14
Package Size: 10674k
Code Size: 3k
Category:
MySQL
Development Platform:
Visual C++
- /*
- * Copyright (c) 1987 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #if defined(LIBC_SCCS) && !defined(lint)
- /*static char *sccsid = "from: @(#)herror.c 6.6 (Berkeley) 2/24/91";*/
- static char *rcsid = "$Id$";
- #endif /* LIBC_SCCS and not lint */
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/uio.h>
- #include <netdb.h>
- #include <unistd.h>
- #include <string.h>
- #include <resolv.h>
- char *h_errlist[] = {
- "Error 0",
- "Unknown host", /* 1 HOST_NOT_FOUND */
- "Host name lookup failure", /* 2 TRY_AGAIN */
- "Unknown server error", /* 3 NO_RECOVERY */
- "No address associated with name", /* 4 NO_ADDRESS */
- };
- int h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
- /*
- * herror --
- * print the error indicated by the h_errno value.
- */
- void
- herror(s)
- const char *s;
- {
- struct iovec iov[4];
- register struct iovec *v = iov;
- int error = h_errno;
- if (s && *s) {
- v->iov_base = (char *)s;
- v->iov_len = strlen(s);
- v++;
- v->iov_base = ": ";
- v->iov_len = 2;
- v++;
- }
- v->iov_base = ((unsigned int)(error) < h_nerr) ?
- h_errlist[error] : "Unknown error";
- v->iov_len = strlen(v->iov_base);
- v++;
- v->iov_base = "n";
- v->iov_len = 1;
- writev(STDERR_FILENO, iov, (v - iov) + 1);
- }
- char *
- hstrerror(err)
- int err;
- {
- return ((unsigned int)(err) < h_nerr) ? h_errlist[err]
- : "Unknown resolver error";
- }