source: rtems/cpukit/libnetworking/libc/herror.c @ cb68253

5
Last change on this file since cb68253 was cb68253, checked in by Sebastian Huber <sebastian.huber@…>, on 09/07/18 at 04:19:02

network: Use kernel/user space header files

Add and use <machine/rtems-bsd-kernel-space.h> and
<machine/rtems-bsd-user-space.h> similar to the libbsd to avoid command
line defines and defines scattered throught the code base.

Simplify cpukit/libnetworking/Makefile.am.

Update #3375.

  • Property mode set to 100644
File size: 4.1 KB
Line 
1#include <machine/rtems-bsd-user-space.h>
2
3/*
4 * Copyright (c) 1987, 1993
5 *      The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by the University of
18 *      California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36/*
37 * Portions Copyright (c) 1996 by Internet Software Consortium.
38 *
39 * Permission to use, copy, modify, and distribute this software for any
40 * purpose with or without fee is hereby granted, provided that the above
41 * copyright notice and this permission notice appear in all copies.
42 *
43 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
44 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
45 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
46 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
47 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
48 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
49 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
50 * SOFTWARE.
51 */
52
53#if HAVE_CONFIG_H
54#include "config.h"
55#endif
56
57#include <sys/types.h>
58#include <sys/uio.h>
59#include <netdb.h>
60#include <string.h>
61#include <unistd.h>
62
63const char *h_errlist[] = {
64        "Resolver Error 0 (no error)",
65        "Unknown host",                         /* 1 HOST_NOT_FOUND */
66        "Host name lookup failure",             /* 2 TRY_AGAIN */
67        "Unknown server error",                 /* 3 NO_RECOVERY */
68        "No address associated with name",      /* 4 NO_ADDRESS */
69};
70int     h_nerr = { sizeof h_errlist / sizeof h_errlist[0] };
71
72int *
73__h_errno(void)
74{
75        static int the_h_errno;
76
77        return &the_h_errno;
78}
79
80#define HERROR_USE_WRITEV
81
82/*
83 * herror --
84 *      print the error indicated by the h_errno value.
85 */
86void
87herror(const char *s)
88{
89#if defined(HERROR_USE_WRITEV)
90        struct iovec iov[4];
91        register struct iovec *v = iov;
92
93        if (s && *s) {
94                v->iov_base = (char *)s;
95                v->iov_len = strlen(s);
96                v++;
97                v->iov_base = ": ";
98                v->iov_len = 2;
99                v++;
100        }
101        v->iov_base = (char *)hstrerror(h_errno);
102        v->iov_len = strlen(v->iov_base);
103        v++;
104        v->iov_base = "\n";
105        v->iov_len = 1;
106        writev(STDERR_FILENO, iov, (v - iov) + 1);
107#else
108        /*
109         * no writev implementation available
110         */
111        if (s && *s) {
112                write (2, s, strlen (s));
113                write (2, ": ", 2);
114        }
115        s = (char *)hstrerror(h_errno);
116        write (2, s, strlen (s));
117        write (2, "\n", 1);
118#endif
119}
120
121const char *
122hstrerror(int err)
123{
124        if (err < 0)
125                return ("Resolver internal error");
126        else if (err < h_nerr)
127                return (h_errlist[err]);
128        return ("Unknown resolver error");
129}
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