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Rev | Author | Line No. | Line |
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2433 | jelen | 1 | /* |
2435 | jelen | 2 | * Copyright (c) 2007 Konopa-Jelen-Majer |
3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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2433 | jelen | 27 | */ |
28 | |||
2435 | jelen | 29 | /** @addtogroup FSDemo |
30 | * @{ |
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31 | */ |
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32 | |||
33 | /** |
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34 | * @file cat.c |
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35 | * @brief A file system demonstration task - raw IPC version |
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36 | */ |
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37 | |||
38 | |||
2433 | jelen | 39 | #include <err.h> |
40 | #include <stdio.h> |
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41 | #include <stdlib.h> |
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42 | #include <string.h> |
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43 | #include <unistd.h> |
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44 | #include <async.h> |
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45 | #include <align.h> |
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46 | #include <as.h> |
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47 | #include <ipc/ipc.h> |
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48 | #include <ipc/services.h> |
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49 | #include <sys/mman.h> |
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50 | #include "../fs/fs.h" |
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51 | #include "../share/shared_proto.h" |
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52 | #include "../console/console.h" |
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53 | #include "../fs/stat.h" |
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54 | |||
55 | #define CON_FS_ATTEMPTS 1000 |
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56 | #define LINE_LENGTH 30 |
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57 | #define EOL 10 |
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58 | #define SPACE_BAR 32 |
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59 | #define CONSOLE_WIDTH 60 |
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60 | #define CONSOLE_HEIGHT 20 |
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61 | |||
62 | static int fs_phone; |
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63 | |||
64 | |||
65 | /** |
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66 | * Reads one line from input (returns after receiving line feed or after reading max_line_length characters) |
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67 | * @param max_line_length Maximum line length allowed |
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68 | * @return Pointer to read string (null when max_line_length < 0). |
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69 | */ |
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70 | static char* input_read(int max_line_length) |
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71 | { |
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72 | if (max_line_length < 0) return NULL; |
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73 | |||
74 | char * input = malloc(max_line_length+1); |
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75 | int c,i; |
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76 | |||
77 | char * cpy = input; |
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78 | i = 0; |
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79 | while ((c = getchar()) != EOL) |
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80 | { |
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81 | if (++i>max_line_length) break; |
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82 | putchar(c); |
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83 | memcpy(cpy++,&c,1); |
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84 | } |
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85 | putchar(EOL); |
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86 | |||
87 | //adds terminating zero |
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88 | memset(cpy,'\0',1); |
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89 | return input; |
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90 | } |
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91 | |||
92 | /** |
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93 | * Reads input and returns after receiving continue_string |
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94 | * @param continue_sign Returns after receiving this character. |
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95 | */ |
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96 | static void wait_for_char(char continue_sign) |
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97 | { |
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98 | printf("- More -\n"); |
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99 | while (getchar() != continue_sign) {} |
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100 | } |
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101 | |||
102 | |||
103 | /** |
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104 | * Writes input string into the console. |
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105 | * @param align_size Max width of the output line. |
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106 | * @param line_count After printing line_count lines, wait_for_char is called |
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107 | * @param reset 1 - resets procedure counters |
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108 | */ |
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109 | static void little_more4(char * input, int align_size, int line_count, int reset) |
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110 | { |
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111 | static int lines = 0; |
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112 | static int chars = 0; |
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113 | |||
114 | if (reset) |
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115 | lines = chars = 0; |
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116 | |||
117 | if ((align_size <= 0) || (line_count <=0)) return; |
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118 | |||
119 | while(*input != '\0') |
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120 | { |
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121 | putchar(*input); |
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122 | |||
123 | if (*(input++) == EOL) |
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124 | { |
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125 | chars = 0; |
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126 | ++lines; |
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127 | } |
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128 | else |
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129 | { |
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130 | ++chars; |
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131 | if (chars >= align_size) |
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132 | { |
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133 | chars = 0; |
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134 | printf("\n"); |
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135 | ++lines; |
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136 | } |
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137 | } |
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138 | |||
139 | if (lines >= line_count) |
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140 | { |
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141 | lines = chars = 0; |
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142 | wait_for_char(SPACE_BAR); |
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143 | } |
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144 | } |
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145 | } |
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146 | |||
147 | /** |
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148 | * Calls little_more(char * input, int align_size, int line_count, int reset) with default values and no reset. |
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149 | */ |
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150 | static void little_more(char * input) |
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151 | { |
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152 | little_more4(input, CONSOLE_WIDTH, CONSOLE_HEIGHT, 0); |
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153 | } |
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154 | |||
155 | /** |
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156 | * Calls little_more(char * input, int align_size, int line_count, int reset) with default values. |
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157 | */ |
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158 | static void little_more2(char * input, int reset) |
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159 | { |
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160 | little_more4(input, CONSOLE_WIDTH, CONSOLE_HEIGHT, reset); |
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161 | } |
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162 | |||
163 | static int fopen(char * filename) |
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164 | { |
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165 | return -1; |
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166 | } |
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167 | |||
168 | static int fclose(int fd) |
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169 | { |
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170 | return -1; |
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171 | } |
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172 | |||
173 | static int fread(void* ptr, int size, int nbmem, int fd) |
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174 | { |
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175 | return 0; |
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176 | } |
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177 | |||
178 | /** |
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179 | * Simple atoi function (converts the string into an integer) |
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180 | * @param str string to convert |
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181 | * @return 0 - if error, else converted number |
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182 | */ |
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183 | static int my_atoi(char * str) |
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184 | { |
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185 | if (str == NULL) return 0; |
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186 | int minus = 0; |
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187 | if (str[0] == '-') |
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188 | { |
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189 | minus = 1; |
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190 | ++str; |
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191 | }; |
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192 | int res = 0; |
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193 | while (*(str) != '\0') |
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194 | { |
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195 | res = res*10; |
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196 | switch (*(str++)) |
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197 | { |
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198 | case '0': |
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199 | break; |
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200 | case '1': |
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201 | ++res; |
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202 | break; |
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203 | case '2': |
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204 | res = res + 2; |
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205 | break; |
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206 | case '3': |
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207 | res = res + 3; |
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208 | break; |
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209 | case '4': |
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210 | res = res + 4; |
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211 | break; |
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212 | case '5': |
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213 | res = res + 5; |
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214 | break; |
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215 | case '6': |
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216 | res = res + 6; |
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217 | break; |
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218 | case '7': |
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219 | res = res + 7; |
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220 | break; |
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221 | case '8': |
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222 | res = res + 8; |
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223 | break; |
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224 | case '9': |
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225 | res = res + 9; |
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226 | break; |
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227 | default: return 0; |
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228 | } |
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229 | } |
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230 | if (minus) |
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231 | { |
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232 | return -res; |
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233 | } |
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234 | else |
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235 | { |
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236 | return res; |
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237 | }; |
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238 | } |
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239 | |||
240 | |||
241 | /** |
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242 | * Simple use of fopen function with some I/O |
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243 | */ |
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244 | static void open_file() |
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245 | { |
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246 | |||
247 | printf("\n\nEnter the file name:\n? "); |
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248 | char * filename = input_read(LINE_LENGTH); |
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249 | int fd = fopen(filename); |
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250 | if (fd < 0) |
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251 | { |
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252 | printf("\nfopen failed!\n"); |
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253 | } |
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254 | else |
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255 | { |
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256 | printf("\nReturned file descriptor: %d\n", fd); |
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257 | } |
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258 | } |
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259 | |||
260 | /** |
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261 | * Simple use of fclose function with some I/O |
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262 | */ |
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263 | static void close_file() |
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264 | { |
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265 | printf("\n\nEnter the file descriptor:\n? "); |
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266 | char * fd_str = input_read(2); |
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267 | int fd = my_atoi(fd_str); |
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268 | free(fd_str); |
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269 | |||
270 | if (fclose(fd) < 0) |
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271 | { |
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272 | printf("\nfclose failed!\n"); |
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273 | } |
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274 | else |
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275 | { |
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276 | printf("\nFile successfully closed.\n"); |
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277 | } |
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278 | } |
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279 | |||
280 | /** |
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281 | * Simple use of fread function with some I/O |
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282 | */ |
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283 | static void read_file() |
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284 | { |
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285 | printf("\n\nEnter the file descriptor:\n? "); |
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286 | char * buf = input_read(2); |
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287 | int fd = my_atoi(buf); |
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288 | free(buf); |
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289 | printf("Enter the no. of elements you want to read:\n? "); |
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290 | buf = input_read(5); |
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291 | int e_no = my_atoi(buf); |
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292 | free(buf); |
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293 | printf("Enter the element size (bytes):\n? "); |
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294 | buf = input_read(5); |
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295 | int e_size = my_atoi(buf); |
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296 | free(buf); |
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297 | //printf("\nEntered values:\n - fd: %d\n- ec: %d\n- es: %d\n",fd,e_no,e_size); |
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298 | void * ptr = malloc(e_no*e_size+1); |
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299 | memset(ptr,'\0',e_no*e_size+1); |
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300 | int res = fread(ptr, e_no, e_size, fd); |
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301 | |||
302 | printf ("\nNo. of elements read: %d\n",res); |
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303 | printf("Returned data:\n------------\n"); |
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304 | little_more2(ptr,1); |
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305 | printf("\n----EOF-----\n"); |
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306 | free(ptr); |
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307 | } |
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308 | |||
309 | |||
310 | |||
311 | |||
312 | int main(int argc, char *argv[]) |
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313 | { |
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314 | char fname[30]; |
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315 | unsigned int file_handle; |
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316 | int retval, flags, entry; |
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317 | unsigned short entries_num, inode_num; |
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318 | size_t size; |
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319 | void *share = NULL; |
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320 | |||
321 | |||
322 | little_more2("Cat task\n",1); |
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323 | |||
324 | little_more("Connecting to the SERVICE_FS..."); |
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325 | if (!connect_to_fs(&fs_phone, CON_FS_ATTEMPTS)) { |
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326 | little_more("Connection to SERVICE_FS was refused\n"); |
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327 | return -1; |
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328 | } |
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329 | little_more("OK\n"); |
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330 | |||
331 | little_more("Creating address space area..."); |
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332 | size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE); |
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333 | share = mmap(share, size, AS_AREA_READ | AS_AREA_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0); |
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334 | if ((int)share < 0){ |
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335 | little_more("As_area_create error: "); |
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336 | printf("%d", (int)share); |
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337 | little_more("\n"); |
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338 | return -1; |
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339 | } |
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340 | printf("OK\n"); |
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341 | |||
342 | little_more("Connecting the task to FS..."); |
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343 | retval = async_req_2(fs_phone, FS_NEW_CONSUMER, task_get_id(), 0, NULL, NULL); |
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344 | if (retval < 0) { |
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345 | printf("%d", retval); |
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346 | little_more("\n"); |
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347 | return -1; |
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348 | } |
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349 | little_more("OK\n"); |
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350 | |||
351 | little_more("Sending memory to FS_SERVICE..."); |
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352 | flags = 0; |
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353 | flags = AS_AREA_READ | AS_AREA_WRITE; |
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354 | retval = async_req_3(fs_phone, IPC_M_AS_AREA_SEND, (uintptr_t)share, size, flags, NULL, NULL, NULL); |
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355 | if (retval < 0) { |
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356 | printf("%d", retval); |
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357 | little_more("\n"); |
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358 | return -1; |
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359 | } |
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360 | little_more("OK\n"); |
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361 | |||
362 | /* Allocating structure for extended message. */ |
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363 | message_params_t *params; |
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364 | params = malloc(sizeof(message_params_t)); |
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365 | memset((void*)params, 0, sizeof(message_params_t)); |
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366 | |||
367 | /* We want lookup our work directory. */ |
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368 | little_more("Request for get number of entries..."); |
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369 | retval = send_request(fs_phone, FS_DSUM, params, share); |
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370 | if (retval < 0) { |
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371 | printf("%d", retval); |
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372 | little_more("\n"); |
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373 | return -1; |
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374 | } |
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375 | little_more("OK\n"); |
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376 | little_more("Total number of entries: "); |
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377 | printf("%d", retval); |
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378 | little_more("\n"); |
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379 | |||
380 | |||
381 | entries_num = retval; |
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382 | |||
383 | |||
384 | /* File list in working directory. */ |
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385 | little_more("File list:\n"); |
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386 | |||
387 | for (entry = 0; entry < entries_num; entry++) { |
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388 | |||
389 | params->entry_number = entry; |
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390 | retval = send_request(fs_phone, FS_READENTRY, params, share); |
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391 | if (retval < 0) { |
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392 | printf("%d", retval); |
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393 | little_more("\n"); |
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394 | return -1; |
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395 | } |
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396 | /* |
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397 | if (retval < sizeof(unsigned short)) |
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398 | continue; |
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399 | */ |
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400 | memcpy(&inode_num, share, sizeof(unsigned short)); |
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401 | memcpy(fname, (void *)(share+sizeof(unsigned short)), retval-sizeof(unsigned short)); |
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402 | |||
403 | /* Do not show empty entries. */ |
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404 | if (!inode_num) |
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405 | continue; |
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406 | |||
407 | little_more("Inode number: "); |
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408 | printf("%u", inode_num); |
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409 | little_more("\t\t"); |
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410 | little_more("File name: "); |
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411 | little_more(fname); |
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412 | little_more("\n"); |
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413 | |||
414 | } |
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415 | little_more("OK\n"); |
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416 | |||
417 | /* We want to change working directory */ |
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418 | memcpy(fname, "uspace/fs", 10); |
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419 | memcpy(params->fname, fname, 10); |
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420 | |||
421 | little_more("Request for changing actual directory to "); |
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422 | little_more(fname); |
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423 | little_more("..."); |
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424 | retval = send_request(fs_phone, FS_CHDIR, params, share); |
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425 | if (retval < 0) { |
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426 | printf("%d", retval); |
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427 | little_more("\n"); |
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428 | return -1; |
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429 | } |
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430 | little_more("OK\n"); |
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431 | |||
432 | /* We want to work with specified file. */ |
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433 | memcpy(fname, "fs.c", 10); |
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434 | memcpy(params->fname, fname, 10); |
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435 | |||
436 | little_more("Request for opening file "); |
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437 | little_more(fname); |
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438 | little_more("..."); |
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439 | retval = send_request(fs_phone, FS_OPEN, params, share); |
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440 | if (retval < 0) { |
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441 | printf("%d", retval); |
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442 | little_more("\n"); |
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443 | return -1; |
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444 | } |
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445 | little_more("OK\n"); |
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446 | |||
447 | file_handle = retval; |
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448 | little_more("Returned file handle..."); |
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449 | printf("%d", file_handle); |
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450 | little_more("\n"); |
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451 | |||
452 | memcpy(params->fname, fname, 10); |
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453 | params->fd = file_handle; |
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454 | |||
455 | little_more("Request for getting info about file "); |
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456 | little_more(fname); |
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457 | little_more("[FSTAT called]..."); |
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458 | retval = send_request(fs_phone, FS_FSTAT, params, share); |
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459 | if (retval < 0) { |
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460 | printf("%d", retval); |
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461 | little_more("\n"); |
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462 | return -1; |
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463 | } |
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464 | little_more("OK\n"); |
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465 | |||
466 | params->fd = file_handle; |
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467 | params->offset = 100; |
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468 | params->whence = 1; /* from actual position in the file */ |
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469 | |||
470 | little_more("Request for seeking after "); |
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471 | printf("%d", params->offset); |
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472 | little_more(" bytes inside file "); |
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473 | little_more(fname); |
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474 | little_more("..."); |
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475 | retval = send_request(fs_phone, FS_SEEK, params, share); |
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476 | if (retval < 0) { |
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477 | printf("%d", retval); |
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478 | little_more("\n"); |
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479 | return -1; |
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480 | } |
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481 | little_more("OK\n"); |
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482 | |||
483 | little_more("New file position is: "); |
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484 | printf("%d", retval); |
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485 | little_more("\n"); |
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486 | |||
487 | params->nbytes = 100; |
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488 | |||
489 | little_more("Request for reading "); |
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490 | printf("%d", params->nbytes); |
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491 | little_more(" bytes from file "); |
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492 | little_more(fname); |
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493 | little_more("..."); |
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494 | |||
495 | retval = send_request(fs_phone, FS_READ, params, share); |
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496 | if (retval < 0) { |
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497 | printf("%d", retval); |
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498 | little_more("\n"); |
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499 | return -1; |
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500 | } |
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501 | little_more("OK\n"); |
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502 | |||
503 | printf("%d", retval); |
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504 | little_more(" bytes was read into buffer\n"); |
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505 | little_more("\nContent of the buffer:\n"); |
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506 | little_more(share); |
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507 | little_more("\n\n"); |
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508 | |||
509 | |||
510 | params->offset = 0; |
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511 | params->whence = 0; /* from beginning of the file */ |
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512 | |||
513 | little_more("Request for seeking after "); |
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514 | printf("%d", params->offset); |
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515 | little_more(" bytes inside file "); |
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516 | little_more(fname); |
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517 | little_more("..."); |
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518 | retval = send_request(fs_phone, FS_SEEK, params, share); |
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519 | if (retval < 0) { |
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520 | printf("%d", retval); |
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521 | little_more("\n"); |
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522 | return -1; |
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523 | } |
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524 | little_more("OK\n"); |
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525 | |||
526 | little_more("New file position is: "); |
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527 | printf("%d", retval); |
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528 | little_more("\n"); |
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529 | params->fd = file_handle; |
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530 | |||
531 | params->nbytes = 50; |
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532 | |||
533 | little_more("Another request for reading "); |
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534 | printf("%d", params->nbytes); |
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535 | little_more(" bytes from file "); |
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536 | little_more(fname); |
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537 | little_more("..."); |
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538 | retval = send_request(fs_phone, FS_READ, params, share); |
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539 | if (retval < 0) { |
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540 | printf("%d", retval); |
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541 | little_more("\n"); |
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542 | return -1; |
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543 | } |
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544 | little_more("OK\n"); |
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545 | |||
546 | printf("%d", retval); |
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547 | little_more(" bytes was read into buffer\n"); |
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548 | little_more("\nContent of the buffer:\n"); |
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549 | little_more(share); |
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550 | little_more("\n\n"); |
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551 | |||
552 | little_more("Request for closing file "); |
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553 | little_more(fname); |
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554 | little_more("..."); |
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555 | retval = send_request(fs_phone, FS_CLOSE, params, share); |
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556 | if (retval < 0) { |
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557 | printf("%d", retval); |
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558 | little_more("\n"); |
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559 | return -1; |
||
560 | } |
||
561 | little_more("OK\n"); |
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562 | |||
563 | |||
564 | /* |
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565 | printf("Request for closing file %s once more...", fname); |
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566 | retval = send_request(fs_phone, FS_CLOSE, params, share); |
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567 | if (retval < 0) { |
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568 | printf("%d\n", retval); |
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569 | return -1; |
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570 | } |
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571 | printf("OK\n"); |
||
572 | */ |
||
573 | |||
574 | little_more("Request for dropping the connection to the FS..."); |
||
575 | retval = send_request(fs_phone, FS_DROP_CONSUMER, params, share); |
||
576 | if (retval < 0) { |
||
577 | printf("%d", retval); |
||
578 | little_more("\n"); |
||
579 | return -1; |
||
580 | } |
||
581 | little_more("OK\n"); |
||
582 | |||
583 | |||
584 | |||
585 | /* Unmapping share area. */ |
||
586 | little_more("Unmapping share area..."); |
||
587 | retval = munmap(share, size); |
||
588 | if (retval < 0) { |
||
589 | printf("%d", retval); |
||
590 | little_more("\n"); |
||
591 | return -1; |
||
592 | } |
||
593 | little_more("OK\n"); |
||
594 | |||
595 | little_more("Creating address space area..."); |
||
596 | size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE); |
||
597 | share = mmap(share, size, AS_AREA_READ | AS_AREA_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0); |
||
598 | if ((int)share < 0){ |
||
599 | little_more("As_area_create error: "); |
||
600 | printf("%d"); |
||
601 | little_more("\n"); |
||
602 | return -1; |
||
603 | } |
||
604 | little_more("OK\n"); |
||
605 | |||
606 | /* Next connection to the FS. */ |
||
607 | little_more("Connecting the task to FS..."); |
||
608 | retval = async_req_2(fs_phone, FS_NEW_CONSUMER, task_get_id(), 0, NULL, NULL); |
||
609 | if (retval < 0) { |
||
610 | little_more("FS_NEW_CONSUMER error: "); |
||
611 | printf("%d", retval); |
||
612 | little_more("\n"); |
||
613 | return -1; |
||
614 | } |
||
615 | little_more("OK\n"); |
||
616 | |||
617 | little_more("Sending memory to FS_SERVICE..."); |
||
618 | flags = 0; |
||
619 | flags = AS_AREA_READ | AS_AREA_WRITE; |
||
620 | retval = async_req_3(fs_phone, IPC_M_AS_AREA_SEND, (uintptr_t)share, size, flags, NULL, NULL, NULL); |
||
621 | if (retval < 0) { |
||
622 | printf("%d", retval); |
||
623 | little_more("\n"); |
||
624 | return -1; |
||
625 | } |
||
626 | little_more("OK\n"); |
||
627 | |||
628 | /* We want to work with specified file. */ |
||
629 | memcpy(fname, "/kernel/arch", 20); |
||
630 | memcpy(params->fname, fname, 20); |
||
631 | |||
632 | little_more("Request for getting info about file "); |
||
633 | little_more(fname); |
||
634 | little_more("[STAT called]..."); |
||
635 | retval = send_request(fs_phone, FS_STAT, params, share); |
||
636 | if (retval < 0) { |
||
637 | printf("%d", retval); |
||
638 | little_more("\n"); |
||
639 | return -1; |
||
640 | } |
||
641 | little_more("OK\n"); |
||
642 | |||
643 | stat_t file_info; |
||
644 | memcpy((void *)(&file_info), share, sizeof(stat_t)); |
||
645 | |||
646 | little_more("Info about file: "); |
||
647 | little_more(fname); |
||
648 | little_more("\nInode number: "); |
||
649 | printf("%d", file_info.st_ino); |
||
650 | little_more("\nMode: "); |
||
651 | printf("%d", file_info.st_mode); |
||
652 | little_more("\nLinks: "); |
||
653 | printf("%d", file_info.st_nlink); |
||
654 | little_more("\nSize: "); |
||
655 | printf("%d", file_info.st_size); |
||
656 | little_more("\n"); |
||
657 | |||
658 | |||
659 | //================================================================================== |
||
660 | while(1) |
||
661 | { |
||
662 | printf("\n\n\n- <stdio.h> calls -\n\n"); |
||
663 | printf("What do you want to do?\n"); |
||
664 | printf("o - open some file\n"); |
||
665 | printf("c - close some file\n"); |
||
666 | printf("r - read some file\n"); |
||
667 | printf("? "); |
||
668 | char * choice = input_read(1); |
||
669 | |||
670 | switch (choice[0]) |
||
671 | { |
||
672 | case 'o': |
||
673 | open_file(); |
||
674 | break; |
||
675 | case 'c': |
||
676 | close_file(); |
||
677 | break; |
||
678 | case 'r': |
||
679 | read_file(); |
||
680 | break; |
||
681 | } |
||
682 | free(choice); |
||
683 | wait_for_char(SPACE_BAR); |
||
684 | printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n"); |
||
685 | } |
||
686 | return 0; |
||
687 | } |
||
688 | |||
689 |