Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_files.c @ 4357:efd515ace6bb stable-1.0
Merge of r4270, r4274:
Minor cleanup:
*) Changed error message to be more appropriate in the imaginary
"open_file_cache max=0" case.
*) Fixed NGX_CONF_TAKE1/NGX_CONF_FLAG misuse.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 14 Dec 2011 14:31:55 +0000 |
parents | cdb2e95bd3d0 |
children | 4919fb357a5d |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 |
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10 |
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11 #if (NGX_HAVE_FILE_AIO) |
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12 |
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13 ngx_uint_t ngx_file_aio = 1; |
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14 |
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15 #endif |
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16 |
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17 |
561 | 18 ssize_t |
19 ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) | |
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20 { |
561 | 21 ssize_t n; |
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22 |
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23 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
461 | 24 "read: %d, %p, %uz, %O", file->fd, buf, size, offset); |
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25 |
469 | 26 #if (NGX_HAVE_PREAD) |
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27 |
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28 n = pread(file->fd, buf, size, offset); |
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29 |
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30 if (n == -1) { |
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31 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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32 "pread() \"%s\" failed", file->name.data); |
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33 return NGX_ERROR; |
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34 } |
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35 |
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36 #else |
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37 |
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38 if (file->sys_offset != offset) { |
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39 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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40 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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41 "lseek() \"%s\" failed", file->name.data); |
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42 return NGX_ERROR; |
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43 } |
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44 |
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45 file->sys_offset = offset; |
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46 } |
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47 |
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48 n = read(file->fd, buf, size); |
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49 |
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50 if (n == -1) { |
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51 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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52 "read() \"%s\" failed", file->name.data); |
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53 return NGX_ERROR; |
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54 } |
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56 file->sys_offset += n; |
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57 |
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58 #endif |
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59 |
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60 file->offset += n; |
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61 |
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62 return n; |
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63 } |
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64 |
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65 |
561 | 66 ssize_t |
67 ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) | |
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68 { |
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69 ssize_t n, written; |
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70 |
461 | 71 ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, |
72 "write: %d, %p, %uz, %O", file->fd, buf, size, offset); | |
73 | |
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74 written = 0; |
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75 |
469 | 76 #if (NGX_HAVE_PWRITE) |
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77 |
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78 for ( ;; ) { |
3657 | 79 n = pwrite(file->fd, buf + written, size, offset); |
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80 |
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81 if (n == -1) { |
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82 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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83 "pwrite() \"%s\" failed", file->name.data); |
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84 return NGX_ERROR; |
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85 } |
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86 |
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87 file->offset += n; |
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88 written += n; |
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89 |
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90 if ((size_t) n == size) { |
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91 return written; |
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92 } |
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93 |
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94 offset += n; |
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95 size -= n; |
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96 } |
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97 |
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98 #else |
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99 |
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100 if (file->sys_offset != offset) { |
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101 if (lseek(file->fd, offset, SEEK_SET) == -1) { |
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102 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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103 "lseek() \"%s\" failed", file->name.data); |
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104 return NGX_ERROR; |
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105 } |
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106 |
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107 file->sys_offset = offset; |
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108 } |
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109 |
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110 for ( ;; ) { |
3657 | 111 n = write(file->fd, buf + written, size); |
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112 |
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113 if (n == -1) { |
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114 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, |
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115 "write() \"%s\" failed", file->name.data); |
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116 return NGX_ERROR; |
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117 } |
182
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118 |
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119 file->offset += n; |
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120 written += n; |
182
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121 |
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122 if ((size_t) n == size) { |
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123 return written; |
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124 } |
182
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125 |
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126 size -= n; |
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127 } |
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128 #endif |
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129 } |
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130 |
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131 |
561 | 132 ngx_fd_t |
1046 | 133 ngx_open_tempfile(u_char *name, ngx_uint_t persistent, ngx_uint_t access) |
303
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134 { |
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135 ngx_fd_t fd; |
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136 |
1046 | 137 fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR, |
138 access ? access : 0600); | |
303
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139 |
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140 if (fd != -1 && !persistent) { |
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141 unlink((const char *) name); |
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142 } |
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143 |
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144 return fd; |
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145 } |
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146 |
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147 |
461 | 148 #define NGX_IOVS 8 |
149 | |
561 | 150 ssize_t |
151 ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset, | |
152 ngx_pool_t *pool) | |
74
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153 { |
290
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154 u_char *prev; |
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155 size_t size; |
4351 | 156 ssize_t total, n; |
461 | 157 ngx_array_t vec; |
158 struct iovec *iov, iovs[NGX_IOVS]; | |
74
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159 |
461 | 160 /* use pwrite() if there is the only buf in a chain */ |
74
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161 |
170
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162 if (cl->next == NULL) { |
343
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163 return ngx_write_file(file, cl->buf->pos, |
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164 (size_t) (cl->buf->last - cl->buf->pos), |
194
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165 offset); |
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166 } |
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167 |
4351 | 168 total = 0; |
169 | |
461 | 170 vec.elts = iovs; |
171 vec.size = sizeof(struct iovec); | |
577 | 172 vec.nalloc = NGX_IOVS; |
461 | 173 vec.pool = pool; |
170
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174 |
461 | 175 do { |
176 prev = NULL; | |
177 iov = NULL; | |
178 size = 0; | |
170
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179 |
461 | 180 vec.nelts = 0; |
181 | |
182 /* create the iovec and coalesce the neighbouring bufs */ | |
170
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183 |
461 | 184 while (cl && vec.nelts < IOV_MAX) { |
185 if (prev == cl->buf->pos) { | |
186 iov->iov_len += cl->buf->last - cl->buf->pos; | |
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187 |
461 | 188 } else { |
501 | 189 iov = ngx_array_push(&vec); |
190 if (iov == NULL) { | |
461 | 191 return NGX_ERROR; |
192 } | |
193 | |
194 iov->iov_base = (void *) cl->buf->pos; | |
195 iov->iov_len = cl->buf->last - cl->buf->pos; | |
196 } | |
197 | |
198 size += cl->buf->last - cl->buf->pos; | |
199 prev = cl->buf->last; | |
200 cl = cl->next; | |
170
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201 } |
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202 |
461 | 203 /* use pwrite() if there is the only iovec buffer */ |
170
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204 |
461 | 205 if (vec.nelts == 1) { |
206 iov = vec.elts; | |
4351 | 207 |
208 n = ngx_write_file(file, (u_char *) iov[0].iov_base, | |
209 iov[0].iov_len, offset); | |
210 | |
211 if (n == NGX_ERROR) { | |
212 return n; | |
213 } | |
214 | |
215 return total + n; | |
461 | 216 } |
170
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217 |
461 | 218 if (file->sys_offset != offset) { |
219 if (lseek(file->fd, offset, SEEK_SET) == -1) { | |
220 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
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221 "lseek() \"%s\" failed", file->name.data); |
461 | 222 return NGX_ERROR; |
223 } | |
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224 |
461 | 225 file->sys_offset = offset; |
226 } | |
227 | |
228 n = writev(file->fd, vec.elts, vec.nelts); | |
229 | |
230 if (n == -1) { | |
231 ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, | |
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232 "writev() \"%s\" failed", file->name.data); |
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233 return NGX_ERROR; |
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234 } |
191
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235 |
461 | 236 if ((size_t) n != size) { |
237 ngx_log_error(NGX_LOG_CRIT, file->log, 0, | |
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238 "writev() \"%s\" has written only %z of %uz", |
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239 file->name.data, n, size); |
461 | 240 return NGX_ERROR; |
241 } | |
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242 |
461 | 243 file->sys_offset += n; |
244 file->offset += n; | |
4351 | 245 total += n; |
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246 |
461 | 247 } while (cl); |
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248 |
4351 | 249 return total; |
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250 } |
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251 |
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252 |
561 | 253 ngx_int_t |
681 | 254 ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s) |
255 { | |
256 struct timeval tv[2]; | |
257 | |
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258 tv[0].tv_sec = ngx_time(); |
681 | 259 tv[0].tv_usec = 0; |
260 tv[1].tv_sec = s; | |
261 tv[1].tv_usec = 0; | |
262 | |
263 if (utimes((char *) name, tv) != -1) { | |
264 return NGX_OK; | |
265 } | |
266 | |
267 return NGX_ERROR; | |
268 } | |
269 | |
270 | |
271 ngx_int_t | |
3651 | 272 ngx_create_file_mapping(ngx_file_mapping_t *fm) |
273 { | |
274 fm->fd = ngx_open_file(fm->name, NGX_FILE_RDWR, NGX_FILE_TRUNCATE, | |
275 NGX_FILE_DEFAULT_ACCESS); | |
276 if (fm->fd == NGX_INVALID_FILE) { | |
277 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, | |
278 ngx_open_file_n " \"%s\" failed", fm->name); | |
279 return NGX_ERROR; | |
280 } | |
281 | |
282 if (ftruncate(fm->fd, fm->size) == -1) { | |
283 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, | |
284 "ftruncate() \"%s\" failed", fm->name); | |
285 goto failed; | |
286 } | |
287 | |
288 fm->addr = mmap(NULL, fm->size, PROT_READ|PROT_WRITE, MAP_SHARED, | |
289 fm->fd, 0); | |
290 if (fm->addr != MAP_FAILED) { | |
291 return NGX_OK; | |
292 } | |
293 | |
294 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, | |
295 "mmap(%uz) \"%s\" failed", fm->size, fm->name); | |
296 | |
297 failed: | |
298 | |
299 if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) { | |
300 ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno, | |
301 ngx_close_file_n " \"%s\" failed", fm->name); | |
302 } | |
303 | |
304 return NGX_ERROR; | |
305 } | |
306 | |
307 | |
308 void | |
309 ngx_close_file_mapping(ngx_file_mapping_t *fm) | |
310 { | |
311 if (munmap(fm->addr, fm->size) == -1) { | |
312 ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, | |
313 "munmap(%uz) \"%s\" failed", fm->size, fm->name); | |
314 } | |
315 | |
316 if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) { | |
317 ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno, | |
318 ngx_close_file_n " \"%s\" failed", fm->name); | |
319 } | |
320 } | |
321 | |
322 | |
323 ngx_int_t | |
561 | 324 ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir) |
186
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325 { |
290
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326 dir->dir = opendir((const char *) name->data); |
186
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327 |
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328 if (dir->dir == NULL) { |
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329 return NGX_ERROR; |
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330 } |
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331 |
457 | 332 dir->valid_info = 0; |
186
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333 |
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334 return NGX_OK; |
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335 } |
561 | 336 |
337 | |
727 | 338 ngx_int_t |
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339 ngx_read_dir(ngx_dir_t *dir) |
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340 { |
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341 dir->de = readdir(dir->dir); |
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342 |
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343 if (dir->de) { |
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344 #if (NGX_HAVE_D_TYPE) |
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345 dir->type = dir->de->d_type; |
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346 #else |
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347 dir->type = 0; |
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348 #endif |
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349 return NGX_OK; |
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350 } |
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351 |
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352 return NGX_ERROR; |
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353 } |
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354 |
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355 |
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356 ngx_int_t |
727 | 357 ngx_open_glob(ngx_glob_t *gl) |
358 { | |
1980 | 359 int n; |
360 | |
361 n = glob((char *) gl->pattern, GLOB_NOSORT, NULL, &gl->pglob); | |
362 | |
363 if (n == 0) { | |
364 return NGX_OK; | |
365 } | |
366 | |
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367 #ifdef GLOB_NOMATCH |
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368 |
1980 | 369 if (n == GLOB_NOMATCH && gl->test) { |
727 | 370 return NGX_OK; |
371 } | |
372 | |
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373 #endif |
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374 |
727 | 375 return NGX_ERROR; |
376 } | |
377 | |
378 | |
379 ngx_int_t | |
380 ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name) | |
381 { | |
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382 size_t count; |
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383 |
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384 #ifdef GLOB_NOMATCH |
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385 count = (size_t) gl->pglob.gl_pathc; |
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386 #else |
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387 count = (size_t) gl->pglob.gl_matchc; |
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388 #endif |
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389 |
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390 if (gl->n < count) { |
727 | 391 |
392 name->len = (size_t) ngx_strlen(gl->pglob.gl_pathv[gl->n]); | |
393 name->data = (u_char *) gl->pglob.gl_pathv[gl->n]; | |
394 gl->n++; | |
395 | |
396 return NGX_OK; | |
397 } | |
398 | |
399 return NGX_DONE; | |
400 } | |
401 | |
402 | |
403 void | |
404 ngx_close_glob(ngx_glob_t *gl) | |
405 { | |
406 globfree(&gl->pglob); | |
407 } | |
408 | |
409 | |
611 | 410 ngx_err_t |
411 ngx_trylock_fd(ngx_fd_t fd) | |
561 | 412 { |
413 struct flock fl; | |
414 | |
611 | 415 fl.l_start = 0; |
416 fl.l_len = 0; | |
417 fl.l_pid = 0; | |
418 fl.l_type = F_WRLCK; | |
561 | 419 fl.l_whence = SEEK_SET; |
611 | 420 |
421 if (fcntl(fd, F_SETLK, &fl) == -1) { | |
422 return ngx_errno; | |
423 } | |
424 | |
425 return 0; | |
426 } | |
427 | |
428 | |
429 ngx_err_t | |
430 ngx_lock_fd(ngx_fd_t fd) | |
431 { | |
432 struct flock fl; | |
433 | |
434 fl.l_start = 0; | |
561 | 435 fl.l_len = 0; |
436 fl.l_pid = 0; | |
437 fl.l_type = F_WRLCK; | |
611 | 438 fl.l_whence = SEEK_SET; |
561 | 439 |
611 | 440 if (fcntl(fd, F_SETLKW, &fl) == -1) { |
441 return ngx_errno; | |
561 | 442 } |
443 | |
611 | 444 return 0; |
561 | 445 } |
446 | |
447 | |
611 | 448 ngx_err_t |
449 ngx_unlock_fd(ngx_fd_t fd) | |
561 | 450 { |
451 struct flock fl; | |
452 | |
611 | 453 fl.l_start = 0; |
561 | 454 fl.l_len = 0; |
455 fl.l_pid = 0; | |
456 fl.l_type = F_UNLCK; | |
611 | 457 fl.l_whence = SEEK_SET; |
561 | 458 |
611 | 459 if (fcntl(fd, F_SETLK, &fl) == -1) { |
460 return ngx_errno; | |
561 | 461 } |
462 | |
611 | 463 return 0; |
561 | 464 } |
2129 | 465 |
466 | |
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467 #if (NGX_HAVE_POSIX_FADVISE) && !(NGX_HAVE_F_READAHEAD) |
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468 |
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469 ngx_int_t |
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470 ngx_read_ahead(ngx_fd_t fd, size_t n) |
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471 { |
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472 int err; |
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473 |
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474 err = posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL); |
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475 |
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476 if (err == 0) { |
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477 return 0; |
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478 } |
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479 |
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480 ngx_set_errno(err); |
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481 return NGX_FILE_ERROR; |
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482 } |
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483 |
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484 #endif |
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485 |
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486 |
2129 | 487 #if (NGX_HAVE_O_DIRECT) |
488 | |
489 ngx_int_t | |
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490 ngx_directio_on(ngx_fd_t fd) |
2129 | 491 { |
492 int flags; | |
493 | |
494 flags = fcntl(fd, F_GETFL); | |
495 | |
496 if (flags == -1) { | |
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497 return NGX_FILE_ERROR; |
2129 | 498 } |
499 | |
500 return fcntl(fd, F_SETFL, flags | O_DIRECT); | |
501 } | |
502 | |
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503 |
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504 ngx_int_t |
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505 ngx_directio_off(ngx_fd_t fd) |
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506 { |
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507 int flags; |
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508 |
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509 flags = fcntl(fd, F_GETFL); |
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510 |
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511 if (flags == -1) { |
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512 return NGX_FILE_ERROR; |
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513 } |
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514 |
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515 return fcntl(fd, F_SETFL, flags & ~O_DIRECT); |
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516 } |
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517 |
2129 | 518 #endif |
2615 | 519 |
520 | |
521 #if (NGX_HAVE_STATFS) | |
522 | |
523 size_t | |
524 ngx_fs_bsize(u_char *name) | |
525 { | |
526 struct statfs fs; | |
527 | |
528 if (statfs((char *) name, &fs) == -1) { | |
529 return 512; | |
530 } | |
531 | |
532 if ((fs.f_bsize % 512) != 0) { | |
533 return 512; | |
534 } | |
535 | |
536 return (size_t) fs.f_bsize; | |
537 } | |
538 | |
539 #elif (NGX_HAVE_STATVFS) | |
540 | |
541 size_t | |
542 ngx_fs_bsize(u_char *name) | |
543 { | |
544 struct statvfs fs; | |
545 | |
546 if (statvfs((char *) name, &fs) == -1) { | |
547 return 512; | |
548 } | |
549 | |
550 if ((fs.f_frsize % 512) != 0) { | |
551 return 512; | |
552 } | |
553 | |
554 return (size_t) fs.f_frsize; | |
555 } | |
556 | |
557 #else | |
558 | |
559 size_t | |
560 ngx_fs_bsize(u_char *name) | |
561 { | |
562 return 512; | |
563 } | |
564 | |
565 #endif |