Mercurial > hg > nginx
annotate src/os/unix/ngx_files.c @ 469:2ff194b74f1e release-0.1.9
nginx-0.1.9-RELEASE import
*) Bugfix: the proxied request was sent without arguments if the
request contains "//", "/./", "/../" or "%XX".
*) Bugfix: the large compressed responses may be transferred not
completely.
*) Bugfix: the files bigger than 2G was not transferred on Linux that
does not support sendfile64().
*) Bugfix: while the build configuration on Linux the
--with-poll_module parameter was required; the bug had appeared in
0.1.8.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 25 Nov 2004 16:17:31 +0000 |
parents | bbd6b0b4a2b1 |
children | d4ea69372b94 |
rev | line source |
---|---|
441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
5
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6 |
33
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7 #include <ngx_config.h> |
8
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8 #include <ngx_core.h> |
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9 |
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10 |
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11 ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) |
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12 { |
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13 ssize_t n; |
5
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14 |
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15 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
461 | 16 "read: %d, %p, %uz, %O", file->fd, buf, size, offset); |
8
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17 |
469 | 18 #if (NGX_HAVE_PREAD) |
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19 |
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20 n = pread(file->fd, buf, size, offset); |
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21 |
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22 if (n == -1) { |
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23 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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24 "pread() failed, file \"%s\"", file->name.data); |
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25 return NGX_ERROR; |
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26 } |
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27 |
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28 #else |
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29 |
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30 if (file->sys_offset != offset) { |
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31 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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32 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "lseek() failed"); |
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33 return NGX_ERROR; |
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34 } |
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35 |
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36 file->sys_offset = offset; |
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37 } |
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38 |
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39 n = read(file->fd, buf, size); |
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40 |
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41 if (n == -1) { |
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42 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "read() failed"); |
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43 return NGX_ERROR; |
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44 } |
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45 |
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46 file->sys_offset += n; |
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47 |
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48 #endif |
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49 |
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50 file->offset += n; |
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51 |
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52 return n; |
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53 } |
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54 |
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55 |
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56 ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) |
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57 { |
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58 ssize_t n; |
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59 |
461 | 60 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
61 "write: %d, %p, %uz, %O", file->fd, buf, size, offset); | |
62 | |
469 | 63 #if (NGX_HAVE_PWRITE) |
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64 |
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65 n = pwrite(file->fd, buf, size, offset); |
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66 |
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67 if (n == -1) { |
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68 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "pwrite() failed"); |
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69 return NGX_ERROR; |
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70 } |
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71 |
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72 if ((size_t) n != size) { |
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73 ngx_log_error(NGX_LOG_CRIT, file->log, 0, |
461 | 74 "pwrite() has written only %z of %uz", n, size); |
73
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75 return NGX_ERROR; |
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76 } |
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77 |
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78 #else |
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79 |
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80 if (file->sys_offset != offset) { |
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81 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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82 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "lseek() failed"); |
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83 return NGX_ERROR; |
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84 } |
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85 |
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86 file->sys_offset = offset; |
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87 } |
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88 |
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89 n = write(file->fd, buf, size); |
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90 |
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91 if (n == -1) { |
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92 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "write() failed"); |
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93 return NGX_ERROR; |
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94 } |
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95 |
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96 if ((size_t) n != size) { |
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97 ngx_log_error(NGX_LOG_CRIT, file->log, 0, |
461 | 98 "write() has written only %z of %uz", n, size); |
182
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99 return NGX_ERROR; |
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100 } |
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101 |
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102 file->sys_offset += n; |
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103 |
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104 #endif |
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105 |
74
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106 file->offset += n; |
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107 |
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108 return n; |
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109 } |
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110 |
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111 |
467 | 112 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent) |
303
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113 { |
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114 ngx_fd_t fd; |
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115 |
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116 fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR, 0600); |
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117 |
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118 if (fd != -1 && !persistent) { |
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119 unlink((const char *) name); |
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120 } |
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121 |
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122 return fd; |
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123 } |
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124 |
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125 |
461 | 126 #define NGX_IOVS 8 |
127 | |
170
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128 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, |
74
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129 off_t offset, ngx_pool_t *pool) |
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130 { |
290
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131 u_char *prev; |
74
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132 size_t size; |
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133 ssize_t n; |
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134 ngx_err_t err; |
461 | 135 ngx_array_t vec; |
136 struct iovec *iov, iovs[NGX_IOVS]; | |
74
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137 |
461 | 138 /* use pwrite() if there is the only buf in a chain */ |
74
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139 |
170
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140 if (cl->next == NULL) { |
343
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141 return ngx_write_file(file, cl->buf->pos, |
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142 (size_t) (cl->buf->last - cl->buf->pos), |
194
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143 offset); |
74
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144 } |
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145 |
461 | 146 vec.elts = iovs; |
147 vec.size = sizeof(struct iovec); | |
148 vec.nalloc = NGX_IOVS; | |
149 vec.pool = pool; | |
170
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150 |
461 | 151 do { |
152 prev = NULL; | |
153 iov = NULL; | |
154 size = 0; | |
170
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155 |
461 | 156 vec.nelts = 0; |
157 | |
158 /* create the iovec and coalesce the neighbouring bufs */ | |
170
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159 |
461 | 160 while (cl && vec.nelts < IOV_MAX) { |
161 if (prev == cl->buf->pos) { | |
162 iov->iov_len += cl->buf->last - cl->buf->pos; | |
74
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163 |
461 | 164 } else { |
165 if (!(iov = ngx_array_push(&vec))) { | |
166 return NGX_ERROR; | |
167 } | |
168 | |
169 iov->iov_base = (void *) cl->buf->pos; | |
170 iov->iov_len = cl->buf->last - cl->buf->pos; | |
171 } | |
172 | |
173 size += cl->buf->last - cl->buf->pos; | |
174 prev = cl->buf->last; | |
175 cl = cl->next; | |
170
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176 } |
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177 |
461 | 178 /* use pwrite() if there is the only iovec buffer */ |
170
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179 |
461 | 180 if (vec.nelts == 1) { |
181 iov = vec.elts; | |
182 return ngx_write_file(file, (u_char *) iov[0].iov_base, | |
183 iov[0].iov_len, offset); | |
184 } | |
170
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185 |
461 | 186 if (file->sys_offset != offset) { |
187 if (lseek(file->fd, offset, SEEK_SET) == -1) { | |
188 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
189 "lseek() failed"); | |
190 return NGX_ERROR; | |
191 } | |
74
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192 |
461 | 193 file->sys_offset = offset; |
194 } | |
195 | |
196 n = writev(file->fd, vec.elts, vec.nelts); | |
197 | |
198 if (n == -1) { | |
199 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
200 "writev() failed"); | |
154
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201 return NGX_ERROR; |
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202 } |
191
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203 |
461 | 204 if ((size_t) n != size) { |
205 ngx_log_error(NGX_LOG_CRIT, file->log, 0, | |
206 "writev() has written only %z of %uz", n, size); | |
207 return NGX_ERROR; | |
208 } | |
74
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209 |
461 | 210 file->sys_offset += n; |
211 file->offset += n; | |
74
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212 |
461 | 213 } while (cl); |
73
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214 |
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215 return n; |
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216 } |
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217 |
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218 |
467 | 219 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir) |
186
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220 { |
290
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221 dir->dir = opendir((const char *) name->data); |
186
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222 |
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223 if (dir->dir == NULL) { |
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224 return NGX_ERROR; |
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225 } |
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226 |
457 | 227 dir->valid_info = 0; |
186
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228 |
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229 return NGX_OK; |
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230 } |