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