1 | /* |
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2 | * COPYRIGHT (c) 1989-2011. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.com/license/LICENSE. |
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8 | * |
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9 | * $Id$ |
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10 | */ |
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11 | |
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12 | #ifdef HAVE_CONFIG_H |
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13 | #include "config.h" |
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14 | #endif |
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15 | |
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16 | #include <sys/stat.h> |
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17 | #include <string.h> |
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18 | #include <stdlib.h> |
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19 | #include <fcntl.h> |
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20 | #include <stdio.h> |
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21 | #include <stdlib.h> |
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22 | #include <stdint.h> |
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23 | #include <memory.h> |
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24 | #include <unistd.h> |
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25 | |
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26 | #include "fstest.h" |
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27 | #include "pmacros.h" |
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28 | |
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29 | static const mode_t mode = S_IRWXU | S_IRWXG | S_IRWXO; |
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30 | |
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31 | static const char databuf [] = |
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32 | "Happy days are here again. Happy days are here again.1Happy " |
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33 | "days are here again.2Happy days are here again.3Happy days are here again." |
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34 | "4Happy days are here again.5Happy days are here again.6Happy days are here " |
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35 | "again.7Happy days are here again."; |
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36 | |
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37 | static const size_t len = sizeof (databuf) - 1; |
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38 | |
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39 | static void |
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40 | test_case_enter (const char *wd) |
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41 | { |
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42 | int status; |
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43 | |
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44 | printf ("test case: %s\n", wd); |
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45 | |
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46 | status = mkdir (wd, mode); |
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47 | rtems_test_assert (status == 0); |
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48 | |
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49 | status = chdir (wd); |
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50 | rtems_test_assert (status == 0); |
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51 | } |
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52 | |
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53 | static void |
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54 | test_case_leave (void) |
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55 | { |
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56 | int status; |
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57 | |
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58 | status = chdir (".."); |
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59 | rtems_test_assert (status == 0); |
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60 | } |
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61 | |
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62 | static void |
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63 | read_write_test (void) |
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64 | { |
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65 | |
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66 | int fd; |
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67 | int status; |
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68 | char *name01 = "name01"; |
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69 | char *name02 = "name02"; |
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70 | struct stat statbuf; |
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71 | char *readbuf; |
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72 | off_t pos = 0; |
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73 | |
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74 | int n; |
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75 | |
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76 | test_case_enter (__func__); |
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77 | |
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78 | /* |
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79 | * Create an empty file |
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80 | */ |
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81 | fd = open (name01, O_CREAT | O_WRONLY, mode); |
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82 | status = close (fd); |
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83 | rtems_test_assert (status == 0); |
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84 | /* |
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85 | * Verify the empty file |
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86 | */ |
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87 | status = stat (name01, &statbuf); |
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88 | rtems_test_assert (status == 0); |
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89 | |
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90 | rtems_test_assert (S_ISREG (statbuf.st_mode)); |
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91 | rtems_test_assert (statbuf.st_size == 0); |
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92 | |
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93 | /* |
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94 | * Write data to the empty file |
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95 | */ |
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96 | fd = open (name01, O_WRONLY); |
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97 | rtems_test_assert (fd >= 0); |
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98 | |
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99 | n = write (fd, databuf, len); |
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100 | rtems_test_assert (n == len); |
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101 | status = close (fd); |
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102 | rtems_test_assert (status == 0); |
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103 | |
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104 | status = stat (name01, &statbuf); |
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105 | rtems_test_assert (status == 0); |
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106 | rtems_test_assert (S_ISREG (statbuf.st_mode)); |
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107 | rtems_test_assert (statbuf.st_size == len); |
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108 | |
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109 | /* |
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110 | * Read the data from the file |
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111 | */ |
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112 | readbuf = (char *) malloc (len + 1); |
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113 | rtems_test_assert (readbuf); |
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114 | |
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115 | fd = open (name01, O_RDONLY); |
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116 | rtems_test_assert (fd >= 0); |
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117 | n = read (fd, readbuf, len); |
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118 | rtems_test_assert (n == len); |
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119 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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120 | status = close (fd); |
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121 | rtems_test_assert (status == 0); |
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122 | |
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123 | /* |
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124 | * Open the file using O_APPEND and write the data |
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125 | */ |
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126 | memset (readbuf, 0, len + 1); |
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127 | fd = open (name01, O_WRONLY | O_APPEND); |
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128 | n = write (fd, databuf, len); |
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129 | rtems_test_assert (n == len); |
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130 | pos = lseek (fd, 0, SEEK_CUR); |
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131 | rtems_test_assert (pos == 2 * len); |
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132 | pos = lseek (fd, 0, SEEK_SET); |
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133 | rtems_test_assert (pos == 0); |
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134 | n = write (fd, databuf, len); |
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135 | rtems_test_assert (n == len); |
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136 | pos = lseek (fd, 0, SEEK_CUR); |
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137 | rtems_test_assert (pos == 3 * len); |
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138 | status = close (fd); |
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139 | rtems_test_assert (status == 0); |
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140 | |
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141 | /* |
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142 | * Read the data and verify it |
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143 | */ |
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144 | fd = open (name01, O_RDONLY); |
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145 | rtems_test_assert (fd >= 0); |
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146 | n = read (fd, readbuf, len); |
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147 | rtems_test_assert (n == len); |
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148 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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149 | n = read (fd, readbuf, len); |
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150 | rtems_test_assert (n == len); |
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151 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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152 | n = read (fd, readbuf, len); |
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153 | rtems_test_assert (n == len); |
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154 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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155 | status = close (fd); |
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156 | rtems_test_assert (status == 0); |
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157 | |
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158 | /* |
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159 | * Open the file using O_RDWR |
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160 | */ |
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161 | memset (readbuf, 0, len + 1); |
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162 | |
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163 | fd = open (name01, O_RDWR); |
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164 | n = write (fd, databuf, len); |
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165 | rtems_test_assert (n == len); |
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166 | pos = lseek (fd, 0, SEEK_CUR); |
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167 | rtems_test_assert (pos == len); |
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168 | n = read (fd, readbuf, len); |
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169 | rtems_test_assert (n == len); |
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170 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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171 | pos = lseek (fd, 0, SEEK_CUR); |
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172 | rtems_test_assert (pos == 2 * len); |
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173 | status = close (fd); |
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174 | rtems_test_assert (status == 0); |
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175 | |
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176 | /* |
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177 | * Open the file using O_TRUNC |
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178 | */ |
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179 | |
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180 | fd = open (name01, O_WRONLY | O_TRUNC); |
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181 | status = close (fd); |
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182 | rtems_test_assert (status == 0); |
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183 | |
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184 | /* |
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185 | * Verify if the length is zero |
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186 | */ |
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187 | status = stat (name01, &statbuf); |
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188 | rtems_test_assert (status == 0); |
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189 | rtems_test_assert (S_ISREG (statbuf.st_mode)); |
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190 | rtems_test_assert (statbuf.st_size == 0); |
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191 | |
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192 | /* |
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193 | * Open a directory |
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194 | */ |
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195 | status = mkdir (name02, mode); |
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196 | rtems_test_assert (status == 0); |
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197 | fd = open (name02, O_RDONLY); |
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198 | rtems_test_assert (fd >= 0); |
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199 | |
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200 | status = close (fd); |
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201 | rtems_test_assert (status == 0); |
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202 | |
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203 | free (readbuf); |
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204 | |
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205 | test_case_leave (); |
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206 | } |
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207 | |
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208 | static void |
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209 | truncate_test03 (void) |
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210 | { |
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211 | |
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212 | int fd; |
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213 | int status; |
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214 | char *name01 = "name01"; |
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215 | struct stat statbuf; |
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216 | |
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217 | char data; |
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218 | int n; |
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219 | int i; |
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220 | |
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221 | char *readbuf; |
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222 | off_t good_size = 100; |
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223 | |
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224 | test_case_enter (__func__); |
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225 | |
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226 | /* |
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227 | * Create an empty file |
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228 | */ |
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229 | fd = creat (name01, mode); |
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230 | status = close (fd); |
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231 | rtems_test_assert (status == 0); |
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232 | |
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233 | |
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234 | /* |
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235 | * Truncate it to a valid size |
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236 | */ |
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237 | status = truncate (name01, good_size); |
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238 | rtems_test_assert (status == 0); |
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239 | /* |
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240 | * Verify the size and the data |
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241 | */ |
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242 | status = stat (name01, &statbuf); |
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243 | rtems_test_assert (status == 0); |
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244 | rtems_test_assert (good_size == statbuf.st_size); |
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245 | |
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246 | fd = open (name01, O_RDONLY); |
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247 | while ((n = read (fd, &data, 1)) > 0) { |
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248 | rtems_test_assert (data == 0); |
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249 | } |
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250 | |
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251 | status = close (fd); |
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252 | rtems_test_assert (status == 0); |
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253 | |
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254 | /* |
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255 | * Fill a file with data |
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256 | */ |
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257 | fd = open (name01, O_WRONLY); |
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258 | rtems_test_assert (fd >= 0); |
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259 | n = write (fd, databuf, len); |
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260 | rtems_test_assert (n == len); |
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261 | |
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262 | /* |
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263 | * Truncate it to the half size |
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264 | */ |
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265 | |
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266 | status = truncate (name01, len / 2); |
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267 | status = truncate (name01, len); |
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268 | |
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269 | /* |
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270 | * verify the data |
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271 | */ |
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272 | readbuf = (char *) malloc (len / 2); |
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273 | rtems_test_assert (readbuf); |
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274 | fd = open (name01, O_RDONLY); |
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275 | rtems_test_assert (fd >= 0); |
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276 | n = read (fd, readbuf, len / 2); |
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277 | rtems_test_assert (n == len / 2); |
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278 | rtems_test_assert (!strncmp (databuf, readbuf, len / 2)); |
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279 | n = read (fd, readbuf, len / 2); |
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280 | rtems_test_assert (n == len / 2); |
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281 | for (i = 0; i < len / 2; i++) { |
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282 | rtems_test_assert (readbuf[i] == 0); |
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283 | } |
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284 | status = close (fd); |
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285 | rtems_test_assert (status == 0); |
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286 | |
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287 | /* |
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288 | * Go back to parent directory |
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289 | */ |
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290 | status = chdir (".."); |
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291 | rtems_test_assert (status == 0); |
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292 | } |
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293 | |
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294 | static void |
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295 | lseek_test (void) |
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296 | { |
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297 | int fd; |
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298 | int status; |
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299 | const char *name01 = "test_name01"; |
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300 | struct stat statbuf; |
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301 | |
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302 | ssize_t n; |
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303 | int i; |
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304 | |
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305 | off_t pos; |
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306 | ssize_t total_written = 0; |
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307 | |
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308 | char *readbuf; |
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309 | |
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310 | test_case_enter (__func__); |
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311 | |
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312 | /* |
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313 | * Create a file and fill with the data. |
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314 | */ |
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315 | puts ("Create a new file"); |
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316 | fd = creat (name01, mode); |
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317 | rtems_test_assert (fd >= 0); |
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318 | |
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319 | pos = lseek (fd, 0, SEEK_CUR); |
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320 | rtems_test_assert (pos == 0); |
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321 | |
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322 | pos = lseek (fd, 0, SEEK_END); |
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323 | rtems_test_assert (pos == 0); |
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324 | |
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325 | pos = lseek (fd, 0, SEEK_SET); |
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326 | rtems_test_assert (pos == 0); |
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327 | |
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328 | |
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329 | printf ("Writing %zd bytes to file\n", len * 10); |
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330 | for (i = 0; i < 10; i++) { |
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331 | n = write (fd, databuf, len); |
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332 | rtems_test_assert (n == (ssize_t) len); |
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333 | total_written += n; |
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334 | } |
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335 | printf ("Successfully wrote %d\n", total_written); |
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336 | |
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337 | /* |
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338 | * Check the current position |
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339 | */ |
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340 | puts ("Check the current position"); |
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341 | pos = lseek (fd, 0, SEEK_CUR); |
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342 | rtems_test_assert (pos == total_written); |
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343 | |
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344 | pos = lseek (fd, 0, SEEK_END); |
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345 | rtems_test_assert (pos == total_written); |
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346 | |
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347 | /* |
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348 | * ftruncate shall not change the posistion |
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349 | */ |
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350 | status = ftruncate (fd, total_written + 1); |
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351 | rtems_test_assert (status == 0); |
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352 | |
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353 | pos = lseek (fd, 0, SEEK_CUR); |
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354 | rtems_test_assert (pos == total_written); |
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355 | |
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356 | pos = lseek (fd, 0, SEEK_END); |
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357 | printf ("%jd\n", (intmax_t) pos); |
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358 | rtems_test_assert (pos == total_written + 1); |
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359 | |
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360 | status = ftruncate (fd, total_written); |
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361 | rtems_test_assert (status == 0); |
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362 | |
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363 | pos = lseek (fd, 0, SEEK_CUR); |
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364 | rtems_test_assert (pos == total_written + 1); |
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365 | |
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366 | /* |
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367 | * Check the file size |
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368 | */ |
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369 | status = fstat (fd, &statbuf); |
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370 | rtems_test_assert (status == 0); |
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371 | rtems_test_assert (statbuf.st_size == total_written); |
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372 | |
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373 | status = ftruncate (fd, total_written); |
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374 | rtems_test_assert (status == 0); |
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375 | |
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376 | status = close (fd); |
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377 | rtems_test_assert (status == 0); |
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378 | |
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379 | /* |
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380 | * Open the file with O_RDONLY and check the lseek |
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381 | */ |
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382 | readbuf = (char *) malloc (len); |
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383 | fd = open (name01, O_RDONLY); |
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384 | pos = lseek (fd, len, SEEK_CUR); |
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385 | rtems_test_assert (pos == len); |
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386 | n = read (fd, readbuf, len); |
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387 | rtems_test_assert (n == len); |
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388 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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389 | |
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390 | pos = lseek (fd, len, SEEK_CUR); |
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391 | rtems_test_assert (pos == 3 * len); |
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392 | n = read (fd, readbuf, len); |
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393 | rtems_test_assert (n == len); |
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394 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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395 | |
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396 | pos = lseek (fd, -(off_t) len, SEEK_CUR); |
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397 | rtems_test_assert (pos == 3 * len); |
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398 | n = read (fd, readbuf, len); |
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399 | rtems_test_assert (n == len); |
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400 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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401 | |
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402 | pos = lseek (fd, 4 * len, SEEK_SET); |
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403 | n = read (fd, readbuf, len); |
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404 | rtems_test_assert (n == len); |
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405 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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406 | |
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407 | |
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408 | pos = lseek (fd, 10, SEEK_SET); |
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409 | n = read (fd, readbuf, len); |
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410 | rtems_test_assert (n == len); |
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411 | rtems_test_assert (strncmp (databuf, readbuf, len) != 0); |
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412 | |
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413 | pos = lseek (fd, -(off_t) len, SEEK_END); |
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414 | n = read (fd, readbuf, 2 * len); |
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415 | rtems_test_assert (n == len); |
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416 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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417 | |
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418 | status = close (fd); |
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419 | rtems_test_assert (status == 0); |
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420 | |
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421 | /* |
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422 | * Open the file withe O_RDWR and check the lseek |
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423 | */ |
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424 | |
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425 | fd = open (name01, O_RDWR); |
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426 | |
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427 | pos = lseek (fd, len, SEEK_CUR); |
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428 | rtems_test_assert (pos == len); |
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429 | n = read (fd, readbuf, len); |
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430 | rtems_test_assert (n == len); |
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431 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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432 | |
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433 | pos = lseek (fd, len, SEEK_CUR); |
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434 | rtems_test_assert (pos == 3 * len); |
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435 | n = read (fd, readbuf, len); |
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436 | rtems_test_assert (n == len); |
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437 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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438 | |
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439 | pos = lseek (fd, -(off_t) len, SEEK_CUR); |
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440 | rtems_test_assert (pos == 3 * len); |
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441 | n = read (fd, readbuf, len); |
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442 | rtems_test_assert (n == len); |
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443 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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444 | |
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445 | pos = lseek (fd, 4 * len, SEEK_SET); |
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446 | n = read (fd, readbuf, len); |
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447 | rtems_test_assert (n == len); |
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448 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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449 | |
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450 | /* |
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451 | * Go to the wrong position, so the data is not the same |
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452 | */ |
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453 | pos = lseek (fd, 10, SEEK_SET); |
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454 | n = read (fd, readbuf, len); |
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455 | rtems_test_assert (n == len); |
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456 | rtems_test_assert (strncmp (databuf, readbuf, len) != 0); |
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457 | |
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458 | /* |
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459 | * Use SEEK_END |
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460 | */ |
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461 | pos = lseek (fd, -(off_t) len, SEEK_END); |
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462 | n = read (fd, readbuf, 2 * len); |
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463 | rtems_test_assert (n == len); |
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464 | rtems_test_assert (!strncmp (databuf, readbuf, len)); |
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465 | |
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466 | memset (readbuf, 0, len); |
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467 | |
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468 | /* |
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469 | * Write the zero to the end of file. |
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470 | */ |
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471 | pos = lseek (fd, -(off_t) len, SEEK_END); |
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472 | rtems_test_assert (pos == (off_t) total_written - (off_t) len); |
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473 | n = write (fd, readbuf, len); |
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474 | rtems_test_assert (n == len); |
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475 | /* |
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476 | * Verify it |
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477 | */ |
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478 | pos = lseek (fd, (off_t) total_written - (off_t) len, SEEK_SET); |
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479 | n = read (fd, readbuf, len); |
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480 | rtems_test_assert (n == len); |
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481 | for (i = 0; i < n; i++) { |
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482 | rtems_test_assert (readbuf[i] == 0); |
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483 | } |
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484 | |
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485 | /* |
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486 | * Write the zero to the beginning of file. |
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487 | */ |
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488 | pos = lseek (fd, -(off_t) total_written, SEEK_END); |
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489 | rtems_test_assert (pos == 0); |
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490 | n = write (fd, readbuf, len); |
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491 | rtems_test_assert (n == len); |
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492 | |
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493 | /* |
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494 | * Verify it |
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495 | */ |
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496 | |
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497 | pos = lseek (fd, 0, SEEK_SET); |
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498 | n = read (fd, readbuf, len); |
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499 | rtems_test_assert (n == len); |
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500 | for (i = 0; i < n; i++) { |
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501 | rtems_test_assert (readbuf[i] == 0); |
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502 | } |
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503 | |
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504 | n = read (fd, readbuf, len); |
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505 | rtems_test_assert (n == len); |
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506 | rtems_test_assert (strncmp (databuf, readbuf, len) == 0); |
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507 | /* |
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508 | * Call ftruncate to decrease the file and the position not change |
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509 | */ |
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510 | status = ftruncate (fd, len); |
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511 | rtems_test_assert (status == 0); |
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512 | pos = lseek (fd, 0, SEEK_CUR); |
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513 | rtems_test_assert (pos == len * 2); |
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514 | |
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515 | status = close (fd); |
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516 | rtems_test_assert (status == 0); |
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517 | |
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518 | test_case_leave (); |
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519 | } |
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520 | |
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521 | void |
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522 | test (void) |
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523 | { |
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524 | read_write_test (); |
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525 | lseek_test (); |
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526 | truncate_test03 (); |
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527 | } |
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