1 | /* |
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2 | * Simple test program to exercise some of the basic functionality of |
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3 | * POSIX Files and Directories Support. |
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4 | * |
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5 | * This test assumes that the file system is initialized with the |
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6 | * following directory structure: |
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7 | * |
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8 | * XXXX fill this in. |
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9 | * / |
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10 | * /dev |
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11 | * /dev/XXX [where XXX includes at least console] |
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12 | * |
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13 | * COPYRIGHT (c) 1989-2010. |
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14 | * On-Line Applications Research Corporation (OAR). |
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15 | * |
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16 | * The license and distribution terms for this file may be |
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17 | * found in the file LICENSE in this distribution or at |
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18 | * http://www.rtems.com/license/LICENSE. |
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19 | * |
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20 | * $Id$ |
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21 | */ |
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22 | |
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23 | #include <stdio.h> |
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24 | |
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25 | #include <pmacros.h> |
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26 | #include <sys/types.h> |
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27 | #include <sys/stat.h> |
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28 | #include <fcntl.h> |
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29 | #include <unistd.h> |
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30 | #include <errno.h> |
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31 | #include <string.h> |
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32 | #include <ctype.h> |
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33 | #include <reent.h> |
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34 | #include <rtems/imfs.h> |
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35 | |
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36 | #include <rtems.h> |
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37 | #include <rtems/libio.h> |
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38 | |
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39 | void test_case_reopen_append(void); |
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40 | |
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41 | char test_write_buffer[ 1024 ]; |
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42 | rtems_filesystem_operations_table IMFS_ops_no_evalformake; |
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43 | rtems_filesystem_operations_table IMFS_ops_no_rename; |
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44 | |
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45 | /* |
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46 | * File test support routines. |
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47 | */ |
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48 | |
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49 | void test_cat( |
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50 | char *file, |
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51 | int offset_arg, |
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52 | int length |
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53 | ); |
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54 | |
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55 | void test_write( |
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56 | char *file, |
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57 | off_t offset, |
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58 | char *buffer |
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59 | ); |
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60 | |
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61 | void test_extend( |
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62 | char *file, |
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63 | off_t new_len |
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64 | ); |
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65 | |
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66 | void IMFS_dump( void ); |
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67 | int IMFS_memfile_maximum_size( void ); |
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68 | |
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69 | /* |
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70 | * dump_statbuf |
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71 | */ |
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72 | |
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73 | void dump_statbuf( struct stat *buf ) |
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74 | { |
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75 | int major1; |
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76 | int minor1; |
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77 | int major2; |
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78 | int minor2; |
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79 | |
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80 | rtems_filesystem_split_dev_t( buf->st_dev, major1, minor1 ); |
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81 | rtems_filesystem_split_dev_t( buf->st_rdev, major2, minor2 ); |
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82 | |
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83 | printf( "....st_dev (0x%x:0x%x)\n", major1, minor1 ); |
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84 | printf( "....st_ino %" PRIxino_t " may vary by small amount\n", buf->st_ino ); |
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85 | printf( "....mode = %08o\n", (unsigned int) buf->st_mode ); |
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86 | printf( "....nlink = %d\n", buf->st_nlink ); |
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87 | |
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88 | printf( "....uid = %d\n", buf->st_uid ); |
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89 | printf( "....gid = %d\n", buf->st_gid ); |
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90 | |
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91 | printf( "....atime = %s", ctime(&buf->st_atime) ); |
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92 | printf( "....mtime = %s", ctime(&buf->st_mtime) ); |
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93 | printf( "....ctime = %s", ctime(&buf->st_ctime) ); |
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94 | |
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95 | printf( "....st_blksize %" PRIxblksize_t "\n", buf->st_blksize ); |
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96 | printf( "....st_blocks %" PRIxblkcnt_t "\n", buf->st_blocks ); |
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97 | } |
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98 | |
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99 | void stat_a_file( |
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100 | const char *file |
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101 | ) |
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102 | { |
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103 | int status; |
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104 | struct stat statbuf; |
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105 | |
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106 | rtems_test_assert( file ); |
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107 | |
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108 | printf( "stat( %s ) returned ", file ); |
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109 | fflush( stdout ); |
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110 | |
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111 | status = stat( file, &statbuf ); |
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112 | |
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113 | if ( status == -1 ) { |
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114 | printf( ": %s\n", strerror( errno ) ); |
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115 | } else { |
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116 | puts(""); |
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117 | dump_statbuf( &statbuf ); |
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118 | } |
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119 | |
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120 | } |
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121 | |
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122 | /* |
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123 | * Main entry point of the test |
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124 | */ |
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125 | |
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126 | #if defined(__rtems__) |
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127 | int test_main(void) |
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128 | #else |
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129 | int main( |
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130 | int argc, |
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131 | char **argv |
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132 | ) |
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133 | #endif |
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134 | { |
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135 | int status; |
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136 | size_t max_size; |
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137 | int fd; |
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138 | int i; |
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139 | struct stat buf; |
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140 | char buffer[128]; |
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141 | FILE *file; |
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142 | time_t atime1; |
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143 | time_t mtime1; |
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144 | time_t ctime1; |
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145 | time_t atime2; |
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146 | time_t mtime2; |
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147 | time_t ctime2; |
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148 | rtems_status_code rtems_status; |
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149 | rtems_time_of_day time; |
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150 | |
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151 | printf( "\n\n*** FILE TEST 1 ***\n" ); |
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152 | |
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153 | /* |
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154 | * Grab the maximum size of an in-memory file. |
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155 | */ |
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156 | |
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157 | max_size = IMFS_memfile_maximum_size(); |
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158 | |
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159 | build_time( &time, 12, 31, 1988, 9, 0, 0, 0 ); |
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160 | rtems_status = rtems_clock_set( &time ); |
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161 | |
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162 | /* |
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163 | * Dump an empty file system |
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164 | */ |
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165 | |
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166 | IMFS_dump(); |
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167 | |
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168 | /* |
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169 | * Simple stat() of /dev/console. |
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170 | */ |
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171 | |
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172 | puts( "stat of /dev/console" ); |
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173 | status = stat( "/dev/console", &buf ); |
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174 | rtems_test_assert( !status ); |
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175 | |
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176 | dump_statbuf( &buf ); |
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177 | |
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178 | /* |
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179 | * Exercise mkdir() and some path evaluation. |
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180 | */ |
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181 | |
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182 | puts( "" ); |
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183 | puts( "mkdir /dev/tty" ); |
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184 | status = mkdir( "/dev/tty", S_IRWXU ); |
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185 | rtems_test_assert( !status ); |
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186 | |
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187 | puts( "" ); |
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188 | puts( "mkdir /usr" ); |
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189 | status = mkdir( "/usr", S_IRWXU ); |
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190 | rtems_test_assert( !status ); |
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191 | puts( "mkdir /etc" ); |
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192 | status = mkdir( "/etc", S_IRWXU ); |
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193 | rtems_test_assert( !status ); |
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194 | |
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195 | puts( "mkdir /tmp" ); |
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196 | status = mkdir( "/tmp", S_IRWXU ); |
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197 | rtems_test_assert( !status ); |
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198 | |
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199 | /* this tests the ".." path in path name evaluation */ |
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200 | puts( "mkdir /tmp/.." ); |
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201 | status = mkdir( "/tmp/..", S_IRWXU ); |
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202 | rtems_test_assert( status == -1 ); |
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203 | rtems_test_assert( errno == EEXIST ); |
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204 | |
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205 | /* now check out trailing separators */ |
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206 | puts( "mkdir /tmp/" ); |
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207 | status = mkdir( "/tmp/", S_IRWXU ); |
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208 | rtems_test_assert( status == -1 ); |
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209 | rtems_test_assert( errno == EEXIST ); |
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210 | |
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211 | /* try to make a directory under a non-existent subdirectory */ |
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212 | puts( "mkdir /j/j1" ); |
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213 | status = mkdir( "/j/j1", S_IRWXU ); |
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214 | rtems_test_assert( status == -1 ); |
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215 | rtems_test_assert( errno == ENOENT ); |
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216 | |
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217 | /* this tests the ability to make a directory in the current one */ |
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218 | puts( "mkdir tmp" ); |
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219 | status = mkdir( "tmp", S_IRWXU ); |
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220 | rtems_test_assert( status == -1 ); |
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221 | rtems_test_assert( errno == EEXIST ); |
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222 | |
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223 | /* test rtems_filesystem_evaluate_path by sending NULL path */ |
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224 | status = chdir( NULL ); |
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225 | rtems_test_assert( status == -1 ); |
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226 | rtems_test_assert( errno == EFAULT ); |
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227 | |
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228 | /* |
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229 | * Now switch gears and exercise rmdir(). |
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230 | */ |
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231 | |
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232 | puts( "" ); |
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233 | puts( "rmdir /usr" ); |
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234 | status = rmdir( "/usr" ); |
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235 | rtems_test_assert( !status ); |
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236 | |
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237 | puts( "rmdir /dev" ); |
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238 | status = rmdir( "/dev" ); |
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239 | rtems_test_assert( status == -1 ); |
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240 | rtems_test_assert( errno == ENOTEMPTY); |
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241 | |
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242 | puts( "rmdir /fred" ); |
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243 | status = rmdir ("/fred"); |
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244 | rtems_test_assert (status == -1); |
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245 | rtems_test_assert( errno == ENOENT ); |
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246 | |
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247 | puts( "mknod /dev/test_console" ); |
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248 | status = mknod( "/dev/test_console", S_IFCHR, 0LL ); |
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249 | rtems_test_assert( !status ); |
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250 | |
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251 | puts( "mknod /dev/tty/S3" ); |
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252 | status = mknod( "/dev/tty/S3", S_IFCHR, 0xFF00000080LL ); |
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253 | rtems_test_assert( !status ); |
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254 | |
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255 | puts ("mknod /etc/passwd"); |
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256 | status = mknod( "/etc/passwd", (S_IFREG | S_IRWXU), 0LL ); |
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257 | rtems_test_assert( !status ); |
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258 | |
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259 | puts( "mkdir /tmp/my_dir"); |
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260 | status = mkdir( "/tmp/my_dir", S_IRWXU ); |
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261 | rtems_test_assert( status == 0 ); |
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262 | |
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263 | puts("mkfifo /c/my_dir" ); |
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264 | status = mkfifo( "/c/my_dir", S_IRWXU ); |
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265 | rtems_test_assert( status == -1 ); |
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266 | |
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267 | /* |
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268 | * Try to make a directory under a file -- ERROR |
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269 | */ |
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270 | |
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271 | puts( "mkdir /etc/passwd/j" ); |
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272 | status = mkdir( "/etc/passwd/j", S_IRWXU ); |
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273 | rtems_test_assert( status == -1 ); |
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274 | rtems_test_assert( errno == ENOTDIR ); |
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275 | |
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276 | /* |
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277 | * Simple open failure case on non-existent file |
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278 | */ |
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279 | |
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280 | puts( "open /tmp/joel - should fail with ENOENT" ); |
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281 | fd = open( "/tmp/joel", O_RDONLY ); |
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282 | rtems_test_assert( fd == -1 ); |
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283 | rtems_test_assert( errno == ENOENT ); |
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284 | |
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285 | /* |
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286 | * Simple open case where the file is created. |
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287 | */ |
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288 | |
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289 | puts( "open /tmp/j" ); |
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290 | fd = open( "/tmp/j", O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO ); |
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291 | rtems_test_assert( fd != -1 ); |
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292 | printf( "open returned file descriptor %d\n", fd ); |
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293 | |
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294 | puts( "close /tmp/j" ); |
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295 | status = close( fd ); |
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296 | rtems_test_assert( !status ); |
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297 | |
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298 | puts( "close /tmp/j again" ); |
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299 | status = close( fd ); |
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300 | rtems_test_assert( status == -1 ); |
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301 | |
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302 | puts( "unlink /tmp/j" ); |
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303 | status = unlink( "/tmp/j" ); |
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304 | rtems_test_assert( !status ); |
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305 | |
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306 | puts( "unlink /tmp" ); |
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307 | status = unlink( "/tmp" ); |
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308 | rtems_test_assert( status ); |
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309 | |
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310 | /* |
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311 | * Simple open failure. Trying to create an existing file. |
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312 | */ |
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313 | |
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314 | puts("create and close /tmp/tom"); |
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315 | fd = open( "/tmp/tom", O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO ); |
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316 | rtems_test_assert( fd != -1 ); |
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317 | status = close( fd ); |
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318 | rtems_test_assert( status == 0 ); |
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319 | |
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320 | puts("Attempt to recreate /tmp/tom"); |
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321 | fd = open( "/tmp/tom", O_CREAT | O_EXCL, S_IRWXU|S_IRWXG|S_IRWXO ); |
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322 | rtems_test_assert( fd == -1 ); |
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323 | rtems_test_assert( errno == EEXIST ); |
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324 | |
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325 | puts("create /tmp/john"); |
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326 | fd = open( "/tmp/john", O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO ); |
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327 | rtems_test_assert( fd != -1 ); |
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328 | |
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329 | puts("tcdrain /tmp/john" ); |
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330 | status = tcdrain( fd ); |
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331 | rtems_test_assert( status == 0 ); |
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332 | |
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333 | /* |
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334 | * Open a file in read-only mode and try to truncate |
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335 | */ |
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336 | |
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337 | puts( "Attempt to create a file, open in read-only mode and truncate it" ); |
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338 | fd = open( "/tmp/bha", O_CREAT | O_RDONLY | O_TRUNC, S_IRUSR ); |
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339 | rtems_test_assert( fd == -1 ); |
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340 | rtems_test_assert( errno == EINVAL ); |
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341 | |
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342 | puts( "Exercise the reentrant version _link_r -- Expect EFAULT" ); |
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343 | status = _link_r( NULL, NULL, NULL ); |
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344 | rtems_test_assert( status == -1 ); |
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345 | rtems_test_assert( errno == EFAULT ); |
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346 | |
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347 | puts( "Unlink /tmp/bha using the reentrant version -- OK" ); |
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348 | status = _unlink_r( NULL, "/tmp/bha" ); |
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349 | rtems_test_assert( status == 0 ); |
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350 | |
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351 | /* |
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352 | * Test simple write to a file at offset 0 |
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353 | */ |
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354 | |
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355 | puts( "mknod /tmp/joel" ); |
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356 | status = mknod( "/tmp/joel", (S_IFREG | S_IRWXU), 0LL ); |
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357 | test_write( "/tmp/joel", 0, "the first write!!!\n" ); |
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358 | test_cat( "/tmp/joel", 0, 0 ); |
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359 | |
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360 | /* Exercise _rename_r */ |
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361 | |
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362 | /* Simple rename test */ |
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363 | puts( "rename /tmp/joel to /tmp/drjoel"); |
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364 | status = _rename_r(NULL,"/tmp/joel","/tmp/drjoel"); |
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365 | rtems_test_assert(status == 0); |
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366 | |
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367 | /* Simple rename test */ |
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368 | puts("rename /tmp/drjoel to /tmp/joel"); |
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369 | status = _rename_r(NULL,"/tmp/drjoel","/tmp/joel"); |
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370 | rtems_test_assert(status == 0); |
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371 | |
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372 | /* Invalid old path */ |
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373 | puts("rename /tmp/drjoel to /tmp/joel - Should result in an error \ |
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374 | since old path is not valid"); |
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375 | status = _rename_r(NULL,"/tmp/drjoel","/tmp/joel"); |
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376 | rtems_test_assert(status == -1); |
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377 | |
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378 | /* Invalid new path */ |
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379 | puts("rename /tmp/joel to /tmp/drjoel/joel - Should result in an error \ |
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380 | since new path is not valid"); |
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381 | status = _rename_r(NULL,"/tmp/joel","/tmp/drjoel/joel"); |
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382 | rtems_test_assert(status == -1); |
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383 | |
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384 | puts("changing dir to /tmp"); |
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385 | status = chdir("/tmp/"); |
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386 | rtems_test_assert(status == 0); |
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387 | |
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388 | puts("rename joel to drjoel"); |
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389 | status = _rename_r(NULL,"joel","drjoel"); |
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390 | rtems_test_assert(status == 0); |
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391 | |
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392 | puts("rename drjoel to joel"); |
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393 | status = _rename_r(NULL,"drjoel","joel"); |
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394 | rtems_test_assert(status == 0); |
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395 | |
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396 | /* Rename across file systems */ |
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397 | puts("creating directory /imfs"); |
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398 | status = mkdir("/imfs",0777); |
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399 | rtems_test_assert(status == 0); |
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400 | puts("creating directory /imfs/hidden_on_mount"); |
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401 | status = mkdir("/imfs/hidden_on_mount",0777); |
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402 | rtems_test_assert(status == 0); |
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403 | |
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404 | puts("mounting filesystem with IMFS_ops at /imfs"); |
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405 | status = mount("null", "/imfs", "imfs", RTEMS_FILESYSTEM_READ_WRITE, NULL); |
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406 | rtems_test_assert(status == 0); |
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407 | puts("creating directory /imfs/test (on newly mounted filesystem)"); |
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408 | status = mkdir("/imfs/test", 0777); |
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409 | rtems_test_assert(status == 0); |
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410 | |
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411 | puts("attempt to rename directory joel to /imfs/test/joel - should fail with EXDEV"); |
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412 | status = _rename_r(NULL, "joel", "/imfs/test/joel"); |
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413 | rtems_test_assert(status == -1); |
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414 | rtems_test_assert(errno == EXDEV); |
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415 | |
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416 | puts("changing dir to /"); |
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417 | status = chdir("/"); |
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418 | rtems_test_assert(status == 0); |
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419 | |
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420 | puts("attempt to rename across filesystem, with old path having a parent node"); |
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421 | puts("attempt to rename tmp/joel to /imfs/test/joel"); |
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422 | status = _rename_r(NULL, "tmp/joel", "/imfs/test/joel"); |
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423 | rtems_test_assert(status == -1); |
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424 | rtems_test_assert(errno == EXDEV); |
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425 | |
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426 | puts("End of _rename_r tests"); |
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427 | |
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428 | /* |
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429 | * Test simple write to a file at a non-0 offset in the first block |
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430 | */ |
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431 | |
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432 | status = unlink( "/tmp/joel" ); |
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433 | rtems_test_assert( !status ); |
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434 | |
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435 | status = mknod( "/tmp/joel", (S_IFREG | S_IRWXU), 0LL ); |
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436 | rtems_test_assert( !status ); |
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437 | |
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438 | test_write( "/tmp/joel", 10, "the first write!!!\n" ); |
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439 | test_cat( "/tmp/joel", 0, 0 ); |
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440 | stat_a_file( "/tmp/joel" ); |
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441 | |
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442 | /* |
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443 | * Test simple write to a file at a non-0 offset in the second block. Then |
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444 | * try to read from various offsets and lengths. |
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445 | */ |
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446 | |
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447 | puts("unlink /tmp/joel"); |
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448 | status = unlink( "/tmp/joel" ); |
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449 | rtems_test_assert( !status ); |
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450 | |
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451 | /* Test a failure path */ |
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452 | |
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453 | puts( "unlink /tmp/joel" ); |
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454 | status = unlink( "/tmp/joel" ); |
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455 | rtems_test_assert( status == -1 ); |
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456 | |
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457 | puts( "mknod /tmp/joel"); |
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458 | status = mknod( "/tmp/joel", (S_IFREG | S_IRWXU), 0LL ); |
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459 | rtems_test_assert( !status ); |
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460 | |
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461 | test_write( "/tmp/joel", 514, "the first write!!!\n" ); |
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462 | test_write( "/tmp/joel", 1, test_write_buffer ); |
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463 | test_write( "/tmp/joel", 63, test_write_buffer ); |
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464 | test_cat( "/tmp/joel", 0, 1 ); |
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465 | test_cat( "/tmp/joel", 1, 1 ); |
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466 | test_cat( "/tmp/joel", 490, 1 ); |
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467 | test_cat( "/tmp/joel", 512, 1 ); |
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468 | test_cat( "/tmp/joel", 513, 1 ); |
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469 | test_cat( "/tmp/joel", 514, 1 ); |
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470 | test_cat( "/tmp/joel", 520, 1 ); |
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471 | test_cat( "/tmp/joel", 1, 1024 ); |
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472 | |
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473 | /* |
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474 | * Read from a much longer file so we can descend into doubly and |
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475 | * triply indirect blocks. |
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476 | */ |
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477 | |
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478 | if ( max_size < (size_t) 300 * 1024 ) { |
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479 | test_extend( "/tmp/joel", max_size - 1 ); |
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480 | test_cat( "/tmp/joel", max_size / 2, 1024 ); |
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481 | } else { |
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482 | printf( "Skipping maximum file size test since max_size is %zu bytes\n", max_size ); |
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483 | puts("That is likely to be bigger than the available RAM on many targets." ); |
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484 | } |
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485 | |
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486 | stat_a_file( "/tmp/joel" ); |
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487 | |
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488 | /* |
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489 | * Now try to use a FILE * descriptor |
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490 | * |
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491 | * /tmp/j should not exist at this point. |
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492 | */ |
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493 | |
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494 | puts( "stat of /tmp/j" ); |
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495 | errno = 0; |
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496 | status = stat( "/tmp/j", &buf ); |
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497 | printf( "stat(/tmp/j) returned %d (errno=%d)\n", status, errno ); |
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498 | dump_statbuf( &buf ); |
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499 | |
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500 | puts( "fopen of /tmp/j" ); |
---|
501 | file = fopen( "/tmp/j", "w+" ); |
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502 | rtems_test_assert( file ); |
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503 | |
---|
504 | puts( "fprintf to /tmp/j" ); |
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505 | for (i=1 ; i<=5 ; i++) { |
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506 | status = fprintf( file, "This is call %d to fprintf\n", i ); |
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507 | rtems_test_assert( status ); |
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508 | printf( "(%d) %d characters written to the file\n", i, status ); |
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509 | } |
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510 | |
---|
511 | fflush( file ); |
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512 | |
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513 | status = stat( "/tmp/j", &buf ); |
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514 | rtems_test_assert( !status ); |
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515 | dump_statbuf( &buf ); |
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516 | atime2 = buf.st_atime; |
---|
517 | mtime2 = buf.st_mtime; |
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518 | ctime2 = buf.st_ctime; |
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519 | |
---|
520 | |
---|
521 | status = rtems_task_wake_after( rtems_clock_get_ticks_per_second() ); |
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522 | rewind( file ); |
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523 | while ( fgets(buffer, 128, file) ) |
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524 | printf( "%s", buffer ); |
---|
525 | |
---|
526 | /* |
---|
527 | * Verify only atime changed for a read. |
---|
528 | */ |
---|
529 | status = stat( "/tmp/j", &buf ); |
---|
530 | rtems_test_assert( !status ); |
---|
531 | dump_statbuf( &buf ); |
---|
532 | atime1 = buf.st_atime; |
---|
533 | mtime1 = buf.st_mtime; |
---|
534 | ctime1 = buf.st_ctime; |
---|
535 | rtems_test_assert( atime1 != atime2); |
---|
536 | rtems_test_assert( mtime1 == mtime2); |
---|
537 | rtems_test_assert( ctime1 == ctime2); |
---|
538 | |
---|
539 | IMFS_dump(); |
---|
540 | |
---|
541 | unlink( "/tmp/joel" ); |
---|
542 | |
---|
543 | /* |
---|
544 | * Now truncate a file |
---|
545 | */ |
---|
546 | |
---|
547 | status = rtems_task_wake_after( rtems_clock_get_ticks_per_second() ); |
---|
548 | puts( "truncate /tmp/j to length of 40" ); |
---|
549 | status = truncate( "/tmp/j", 40 ); |
---|
550 | rtems_test_assert( !status ); |
---|
551 | |
---|
552 | /* |
---|
553 | * Verify truncate changed only atime. |
---|
554 | */ |
---|
555 | status = stat( "/tmp/j", &buf ); |
---|
556 | rtems_test_assert( !status ); |
---|
557 | dump_statbuf( &buf ); |
---|
558 | atime2 = buf.st_atime; |
---|
559 | mtime2 = buf.st_mtime; |
---|
560 | ctime2 = buf.st_ctime; |
---|
561 | rtems_test_assert( atime1 != atime2); |
---|
562 | rtems_test_assert( mtime1 == mtime2); |
---|
563 | rtems_test_assert( ctime1 == ctime2); |
---|
564 | |
---|
565 | IMFS_dump(); |
---|
566 | |
---|
567 | /* try to truncate the console and see what happens */ |
---|
568 | status = truncate( "/dev/console", 40 ); |
---|
569 | rtems_test_assert( status == 0 ); |
---|
570 | |
---|
571 | puts( "truncate /tmp/j to length of 0" ); |
---|
572 | status = truncate( "/tmp/j", 0 ); |
---|
573 | rtems_test_assert( !status ); |
---|
574 | |
---|
575 | puts( "truncate /tmp to length of 0 should fail with EISDIR\n"); |
---|
576 | status = truncate( "/tmp", 0 ); |
---|
577 | rtems_test_assert( status == -1 ); |
---|
578 | printf( "%d: %s\n", errno, strerror( errno ) ); |
---|
579 | rtems_test_assert( errno == EISDIR ); |
---|
580 | |
---|
581 | IMFS_dump(); |
---|
582 | |
---|
583 | status = truncate( "/tmp/fred", 10 ); |
---|
584 | rtems_test_assert( status == -1); |
---|
585 | |
---|
586 | rtems_status = rtems_io_register_name( "/dev/console", 0, 0 ); |
---|
587 | |
---|
588 | test_case_reopen_append(); |
---|
589 | |
---|
590 | printf( "*** END OF FILE TEST 1 ***\n" ); |
---|
591 | rtems_test_exit( 0 ); |
---|
592 | } |
---|
593 | |
---|
594 | /* |
---|
595 | * Open/Create a File and write to it |
---|
596 | * |
---|
597 | * Test case submitted by Andrew Bythell <abythell@nortelnetworks.com>. |
---|
598 | * |
---|
599 | */ |
---|
600 | |
---|
601 | void test_file (char *filename, char *mode); |
---|
602 | |
---|
603 | void test_case_reopen_append(void) |
---|
604 | { |
---|
605 | printf ("Writing First File\n"); |
---|
606 | test_file ("/one.txt", "a"); |
---|
607 | test_file ("/one.txt", "a"); |
---|
608 | |
---|
609 | /* but not the second time - this will insert junk. |
---|
610 | the number of ^@'s seems to equal the number of |
---|
611 | actual characters in the file */ |
---|
612 | |
---|
613 | printf ("Writing Second File\n"); |
---|
614 | test_file ("/two.txt", "a"); |
---|
615 | test_file ("/two.txt", "a"); |
---|
616 | |
---|
617 | test_cat( "/one.txt", 0, 1024 ); |
---|
618 | test_cat( "/two.txt", 0, 1024 ); |
---|
619 | } |
---|
620 | |
---|
621 | void test_file (char *filename, char *mode) |
---|
622 | { |
---|
623 | FILE *fp; |
---|
624 | fp = fopen (filename, mode); |
---|
625 | if (!fp) |
---|
626 | perror ("fopen"); |
---|
627 | fprintf (fp, "this is a test line\n"); |
---|
628 | if (fclose (fp)) |
---|
629 | perror ("fclose"); |
---|
630 | } |
---|