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unistd: port readlink to Mac OS X 10.3.9 * lib/unistd.in.h (_GL_INCLUDING_UNISTD_H): New macro, to work around self-include problem in Mac OS X 10.3.9 when combined with readlink module. Problem reported by Klaus Zietler in <http://bugs.gnu.org/16825>.
author Paul Eggert <eggert@penguin.cs.ucla.edu>
date Tue, 25 Feb 2014 11:16:27 -0800
parents 344018b6e5d7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Test of strerror_r() function.
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2 Copyright (C) 2007-2014 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, see <http://www.gnu.org/licenses/>. */
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16
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17 #include <config.h>
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18
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19 #include <string.h>
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20
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21 #include "signature.h"
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22 SIGNATURE_CHECK (strerror_r, int, (int, char *, size_t));
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23
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24 #include <errno.h>
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25
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26 #include "macros.h"
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27
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28 int
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29 main (void)
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30 {
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31 char buf[100];
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32 int ret;
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33
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34 /* Test results with valid errnum and enough room. */
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35
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36 errno = 0;
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37 buf[0] = '\0';
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38 ASSERT (strerror_r (EACCES, buf, sizeof buf) == 0);
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39 ASSERT (buf[0] != '\0');
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40 ASSERT (errno == 0);
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41 ASSERT (strlen (buf) < sizeof buf);
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42
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43 errno = 0;
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44 buf[0] = '\0';
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45 ASSERT (strerror_r (ETIMEDOUT, buf, sizeof buf) == 0);
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46 ASSERT (buf[0] != '\0');
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47 ASSERT (errno == 0);
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48 ASSERT (strlen (buf) < sizeof buf);
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49
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50 errno = 0;
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51 buf[0] = '\0';
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52 ASSERT (strerror_r (EOVERFLOW, buf, sizeof buf) == 0);
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53 ASSERT (buf[0] != '\0');
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54 ASSERT (errno == 0);
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55 ASSERT (strlen (buf) < sizeof buf);
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56
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57 /* POSIX requires strerror (0) to succeed. Reject use of "Unknown
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58 error", but allow "Success", "No error", or even Solaris' "Error
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59 0" which are distinct patterns from true out-of-range strings.
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60 http://austingroupbugs.net/view.php?id=382 */
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61 errno = 0;
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62 buf[0] = '\0';
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63 ret = strerror_r (0, buf, sizeof buf);
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64 ASSERT (ret == 0);
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65 ASSERT (buf[0]);
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66 ASSERT (errno == 0);
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67 ASSERT (strstr (buf, "nknown") == NULL);
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68 ASSERT (strstr (buf, "ndefined") == NULL);
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69
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70 /* Test results with out-of-range errnum and enough room. POSIX
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71 allows an empty string on success, and allows an unchanged buf on
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72 error, but these are not useful, so we guarantee contents. */
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73 errno = 0;
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74 buf[0] = '^';
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75 ret = strerror_r (-3, buf, sizeof buf);
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76 ASSERT (ret == 0 || ret == EINVAL);
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77 ASSERT (buf[0] != '^');
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78 ASSERT (*buf);
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79 ASSERT (errno == 0);
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80 ASSERT (strlen (buf) < sizeof buf);
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81
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82 /* Test results with a too small buffer. POSIX requires an error;
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83 only ERANGE for 0 and valid errors, and a choice of ERANGE or
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84 EINVAL for out-of-range values. On error, POSIX permits buf to
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85 be empty, unchanged, or unterminated, but these are not useful,
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86 so we guarantee NUL-terminated truncated contents for all but
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87 size 0. http://austingroupbugs.net/view.php?id=398. Also ensure
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88 that no out-of-bounds writes occur. */
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89 {
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90 int errs[] = { EACCES, 0, -3, };
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91 int j;
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92
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93 buf[sizeof buf - 1] = '\0';
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94 for (j = 0; j < SIZEOF (errs); j++)
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95 {
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96 int err = errs[j];
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97 char buf2[sizeof buf] = "";
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98 size_t len;
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99 size_t i;
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100
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101 strerror_r (err, buf2, sizeof buf2);
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102 len = strlen (buf2);
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103 ASSERT (len < sizeof buf);
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104
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105 for (i = 0; i <= len; i++)
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106 {
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107 memset (buf, '^', sizeof buf - 1);
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108 errno = 0;
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109 ret = strerror_r (err, buf, i);
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110 ASSERT (errno == 0);
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111 if (err < 0)
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112 ASSERT (ret == ERANGE || ret == EINVAL);
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113 else
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114 ASSERT (ret == ERANGE);
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115 if (i)
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116 {
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117 ASSERT (strncmp (buf, buf2, i - 1) == 0);
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118 ASSERT (buf[i - 1] == '\0');
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119 }
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120 ASSERT (strspn (buf + i, "^") == sizeof buf - 1 - i);
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121 }
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122
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123 strcpy (buf, "BADFACE");
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124 errno = 0;
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125 ret = strerror_r (err, buf, len + 1);
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126 ASSERT (ret != ERANGE);
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127 ASSERT (errno == 0);
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128 ASSERT (strcmp (buf, buf2) == 0);
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129 }
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130 }
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131
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132 #if GNULIB_STRERROR
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133 /* Test that strerror_r does not clobber strerror buffer. On some
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134 platforms, this test can only succeed if gnulib also replaces
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135 strerror. */
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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136 {
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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137 const char *msg1;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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138 const char *msg2;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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139 const char *msg3;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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140 const char *msg4;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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141 char *str1;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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142 char *str2;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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143 char *str3;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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144 char *str4;
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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145
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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146 msg1 = strerror (ENOENT);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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147 ASSERT (msg1);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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148 str1 = strdup (msg1);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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149 ASSERT (str1);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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150
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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151 msg2 = strerror (ERANGE);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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152 ASSERT (msg2);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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153 str2 = strdup (msg2);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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154 ASSERT (str2);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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155
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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156 msg3 = strerror (-4);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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157 ASSERT (msg3);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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158 str3 = strdup (msg3);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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159 ASSERT (str3);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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160
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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161 msg4 = strerror (1729576);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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162 ASSERT (msg4);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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163 str4 = strdup (msg4);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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164 ASSERT (str4);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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165
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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166 strerror_r (EACCES, buf, sizeof buf);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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167 strerror_r (-5, buf, sizeof buf);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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168 ASSERT (msg1 == msg2 || msg1 == msg4 || STREQ (msg1, str1));
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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169 ASSERT (msg2 == msg4 || STREQ (msg2, str2));
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
parents: 14769
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170 ASSERT (msg3 == msg4 || STREQ (msg3, str3));
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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171 ASSERT (STREQ (msg4, str4));
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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172
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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173 free (str1);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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174 free (str2);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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175 free (str3);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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176 free (str4);
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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177 }
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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178 #endif
5a40a173eb17 strerror_r: avoid clobbering strerror on cygwin
Eric Blake <eblake@redhat.com>
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179
13848
3e10d2e4b8af Tests for module 'strerror_r-posix'.
Bruno Haible <bruno@clisp.org>
parents:
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180 return 0;
3e10d2e4b8af Tests for module 'strerror_r-posix'.
Bruno Haible <bruno@clisp.org>
parents:
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181 }