Mercurial > hg > nginx
annotate src/os/win32/ngx_files.c @ 183:4c698194c56d
nginx-0.0.1-2003-11-13-19:16:33 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 13 Nov 2003 16:16:33 +0000 |
parents | 3c49eaf3f522 |
children | 1bf718ce0dde |
rev | line source |
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nginx-0.0.1-2002-12-27-10:27:47 import
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 |
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6 ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset) |
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7 { |
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8 size_t n; |
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9 OVERLAPPED ovlp, *povlp; |
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11 #if (WIN9X) |
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12 |
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13 if (ngx_win32_version < NGX_WIN_NT) { |
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14 long high_offset; |
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15 ngx_err_t err; |
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16 |
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17 /* |
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18 * in Win9X the overlapped pointer must be NULL |
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19 * so we need to use SetFilePointer() to set the offset |
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20 */ |
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21 |
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22 if (file->offset != offset) { |
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23 |
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24 /* |
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25 * the maximum file size on FAT16 is 2G, but on FAT32 it's 4G so we |
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26 * need to use high_offset because a single offset is signed value |
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27 */ |
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28 |
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29 high_offset = (long) (offset >> 32); |
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30 if (SetFilePointer(file->fd, (long) offset, &high_offset, |
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31 FILE_BEGIN) == INVALID_SET_FILE_POINTER) |
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32 { |
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33 /* |
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34 * INVALID_SET_FILE_POINTER is 0xffffffff and it can be valid |
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35 * value for large file so we need also to check GetLastError() |
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36 */ |
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37 |
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38 err = ngx_errno; |
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39 if (err != NO_ERROR) { |
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40 ngx_log_error(NGX_LOG_ERR, file->log, err, |
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41 "SeekFilePointer() failed"); |
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42 return NGX_ERROR; |
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43 } |
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44 } |
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45 } |
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46 |
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47 povlp = NULL; |
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48 |
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49 } else { |
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50 |
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51 #endif |
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52 ovlp.Internal = 0; |
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53 ovlp.InternalHigh = 0; |
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54 ovlp.Offset = (DWORD) offset; |
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55 ovlp.OffsetHigh = (DWORD) (offset >> 32); |
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56 ovlp.hEvent = NULL; |
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57 |
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58 povlp = &ovlp; |
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59 |
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60 #if (WIN9X) |
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61 } |
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62 #endif |
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63 |
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64 if (ReadFile(file->fd, buf, size, &n, povlp) == 0) { |
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65 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "ReadFile() failed"); |
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66 return NGX_ERROR; |
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67 } |
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68 |
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69 file->offset += n; |
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70 |
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71 return n; |
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72 } |
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73 |
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74 |
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75 ssize_t ngx_write_file(ngx_file_t *file, char *buf, size_t size, off_t offset) |
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76 { |
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77 size_t n; |
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78 OVERLAPPED ovlp, *povlp; |
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79 |
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80 #if (WIN9X) |
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81 |
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82 if (ngx_win32_version < NGX_WIN_NT) { |
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83 long high_offset; |
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84 ngx_err_t err; |
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85 |
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86 /* |
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87 * in Win9X the overlapped pointer must be NULL |
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88 * so we need to use SetFilePointer() to set the offset |
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89 */ |
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90 |
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91 if (file->offset != offset) { |
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92 |
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93 /* |
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94 * the maximum file size on FAT16 is 2G, but on FAT32 it's 4G so we |
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95 * need to use high_offset because a single offset is signed value |
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96 */ |
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97 |
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98 high_offset = (long) (offset >> 32); |
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99 if (SetFilePointer(file->fd, (long) offset, &high_offset, |
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100 FILE_BEGIN) == INVALID_SET_FILE_POINTER) |
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101 { |
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102 /* |
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103 * INVALID_SET_FILE_POINTER is 0xffffffff and it can be valid |
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104 * value for large file so we need also to check GetLastError() |
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105 */ |
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106 |
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107 err = ngx_errno; |
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108 if (err != NO_ERROR) { |
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109 ngx_log_error(NGX_LOG_ERR, file->log, err, |
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110 "SeekFilePointer() failed"); |
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111 return NGX_ERROR; |
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112 } |
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113 } |
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114 } |
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115 |
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116 povlp = NULL; |
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117 |
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118 } else { |
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119 |
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120 #endif |
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121 |
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122 ovlp.Internal = 0; |
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123 ovlp.InternalHigh = 0; |
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124 ovlp.Offset = (DWORD) offset; |
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125 ovlp.OffsetHigh = (DWORD) (offset >> 32); |
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126 ovlp.hEvent = NULL; |
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127 |
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128 povlp = &ovlp; |
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129 |
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130 #if (WIN9X) |
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131 } |
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132 #endif |
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133 |
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134 if (WriteFile(file->fd, buf, size, &n, povlp) == 0) { |
182
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135 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "WriteFile() failed"); |
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136 return NGX_ERROR; |
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nginx-0.0.1-2003-11-13-09:14:05 import
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137 } |
3c49eaf3f522
nginx-0.0.1-2003-11-13-09:14:05 import
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138 |
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nginx-0.0.1-2003-11-13-09:14:05 import
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139 file->offset += n; |
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140 |
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141 return n; |
3c49eaf3f522
nginx-0.0.1-2003-11-13-09:14:05 import
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142 } |
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nginx-0.0.1-2003-11-13-09:14:05 import
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143 |
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nginx-0.0.1-2003-11-13-09:14:05 import
Igor Sysoev <igor@sysoev.ru>
parents:
123
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144 |
123
b75602822f64
nginx-0.0.1-2003-07-24-00:01:29 import
Igor Sysoev <igor@sysoev.ru>
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100
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145 int ngx_file_append_mode(ngx_fd_t fd) |
100
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146 { |
183
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147 ngx_err_t err; |
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148 |
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149 if (SetFilePointer(fd, 0, NULL, FILE_END) == INVALID_SET_FILE_POINTER) { |
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150 err = ngx_errno; |
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151 if (err != NO_ERROR) { |
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152 ngx_log_error(NGX_LOG_ERR, file->log, err, |
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153 "SeekFilePointer() failed"); |
100
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154 return NGX_ERROR; |
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155 } |
7ebc8b7fb816
nginx-0.0.1-2003-06-03-19:42:58 import
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156 } |
7ebc8b7fb816
nginx-0.0.1-2003-06-03-19:42:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
42
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157 |
7ebc8b7fb816
nginx-0.0.1-2003-06-03-19:42:58 import
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158 return NGX_OK; |
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nginx-0.0.1-2003-06-03-19:42:58 import
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42
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159 } |