Mercurial > hg > nginx
annotate src/http/ngx_http_file_cache.c @ 2079:333ef9e18a59
fix error when response parsed by sub filter, then by SSI filter
and some response parts are output as file buffers
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 30 Jun 2008 19:10:06 +0000 |
parents | f971949ffb58 |
children | 3a8a53c0c42f |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
441
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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 #include <ngx_http.h> |
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10 |
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11 |
469 | 12 #if (NGX_HAVE_OPENSSL_MD5_H) |
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13 #include <openssl/md5.h> |
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14 #else |
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15 #include <md5.h> |
265
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16 #endif |
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17 |
469 | 18 #if (NGX_OPENSSL_MD5) |
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19 #define MD5Init MD5_Init |
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20 #define MD5Update MD5_Update |
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21 #define MD5Final MD5_Final |
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22 #endif |
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23 |
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24 |
477 | 25 ngx_int_t ngx_http_file_cache_get(ngx_http_request_t *r, |
26 ngx_http_cache_ctx_t *ctx) | |
202
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27 { |
477 | 28 ngx_uint_t i; |
29 ngx_str_t *key; | |
30 ngx_http_cache_t *c; | |
31 MD5_CTX md5; | |
202
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32 |
477 | 33 c = r->cache; |
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34 |
477 | 35 c->file.name.len = ctx->path->name.len + 1 + ctx->path->len + 32; |
36 if (!(c->file.name.data = ngx_palloc(r->pool, c->file.name.len + 1))) { | |
37 return NGX_ABORT; | |
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38 } |
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39 |
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40 MD5Init(&md5); |
477 | 41 |
42 key = c->key.elts; | |
43 for (i = 0; i < c->key.nelts; i++) { | |
44 MD5Update(&md5, key[i].data, key[i].len); | |
45 } | |
202
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46 |
477 | 47 MD5Update(&md5, ctx->key.data, ctx->key.len); |
48 | |
49 MD5Final(c->md5, &md5); | |
50 | |
51 ngx_memcpy(c->file.name.data, ctx->path->name.data, ctx->path->name.len); | |
52 | |
53 ngx_md5_text(c->file.name.data + ctx->path->name.len + 1 + ctx->path->len, | |
54 c->md5); | |
202
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55 |
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56 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
477 | 57 "file cache key: %V, md5: %s", &ctx->key, |
58 c->file.name.data + ctx->path->name.len + 1 + ctx->path->len); | |
202
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59 |
477 | 60 ngx_create_hashed_filename(&c->file, ctx->path); |
202
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61 |
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62 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
477 | 63 "file cache name: %s", c->file.name.data); |
202
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64 |
477 | 65 return ngx_http_file_cache_open(r->cache); |
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66 } |
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67 |
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68 |
477 | 69 ngx_int_t ngx_http_file_cache_open(ngx_http_cache_t *c) |
202
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70 { |
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71 ssize_t n; |
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72 ngx_err_t err; |
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73 ngx_http_cache_header_t *h; |
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74 |
477 | 75 c->file.fd = ngx_open_file(c->file.name.data, |
76 NGX_FILE_RDONLY, NGX_FILE_OPEN); | |
202
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77 |
477 | 78 if (c->file.fd == NGX_INVALID_FILE) { |
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79 err = ngx_errno; |
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80 |
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81 if (err == NGX_ENOENT || err == NGX_ENOTDIR) { |
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82 return NGX_DECLINED; |
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83 } |
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84 |
477 | 85 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno, |
86 ngx_open_file_n " \"%s\" failed", c->file.name.data); | |
202
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87 return NGX_ERROR; |
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88 } |
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89 |
477 | 90 if (c->uniq) { |
91 if (ngx_fd_info(c->file.fd, &c->file.info) == NGX_FILE_ERROR) { | |
92 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno, | |
93 ngx_fd_info_n " \"%s\" failed", c->file.name.data); | |
202
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94 |
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95 return NGX_ERROR; |
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96 } |
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97 |
477 | 98 if (ngx_file_uniq(&c->file.info) == c->uniq) { |
99 if (ngx_close_file(c->file.fd) == NGX_FILE_ERROR) { | |
100 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, | |
202
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101 ngx_close_file_n " \"%s\" failed", |
477 | 102 c->file.name.data); |
202
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103 } |
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104 |
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105 return NGX_HTTP_CACHE_THE_SAME; |
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106 } |
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107 } |
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108 |
477 | 109 n = ngx_read_file(&c->file, c->buf->pos, c->buf->end - c->buf->last, 0); |
202
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110 |
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111 if (n == NGX_ERROR || n == NGX_AGAIN) { |
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112 return n; |
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113 } |
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114 |
477 | 115 if (n <= c->header_size) { |
116 ngx_log_error(NGX_LOG_CRIT, c->log, 0, | |
117 "cache file \"%s\" is too small", c->file.name.data); | |
202
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118 return NGX_ERROR; |
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119 } |
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120 |
477 | 121 h = (ngx_http_cache_header_t *) c->buf->pos; |
122 c->expires = h->expires; | |
123 c->last_modified= h->last_modified; | |
124 c->date = h->date; | |
125 c->length = h->length; | |
202
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126 |
477 | 127 if (h->key_len > (size_t) (c->buf->end - c->buf->pos)) { |
128 ngx_log_error(NGX_LOG_ALERT, c->log, 0, | |
202
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129 "cache file \"%s\" is probably invalid", |
477 | 130 c->file.name.data); |
202
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131 return NGX_DECLINED; |
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132 } |
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133 |
477 | 134 #if 0 |
135 | |
136 /* TODO */ | |
137 | |
138 if (c->key_len && h->key_len != c->key_len) { | |
139 | |
140 ngx_strncmp(h->key, c->key_data, h->key_len) != 0)) | |
141 | |
202
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142 h->key[h->key_len] = '\0'; |
477 | 143 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
202
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144 "md5 collision: \"%s\" and \"%s\"", |
477 | 145 h->key, c->key.data); |
202
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146 return NGX_DECLINED; |
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147 } |
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148 |
477 | 149 #endif |
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150 |
477 | 151 c->buf->last += n; |
257
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152 |
477 | 153 if (c->expires < ngx_time()) { |
154 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
257
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155 "http file cache expired"); |
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156 return NGX_HTTP_CACHE_STALE; |
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157 } |
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158 |
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159 /* TODO: NGX_HTTP_CACHE_AGED */ |
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160 |
477 | 161 /* STUB */ return NGX_DECLINED; |
162 | |
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163 return NGX_OK; |
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164 } |
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165 |
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166 |
477 | 167 #if 0 |
168 | |
169 | |
202
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170 int ngx_http_cache_update_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx, |
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171 ngx_str_t *temp_file) |
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172 { |
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173 int retry; |
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174 ngx_err_t err; |
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175 |
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176 retry = 0; |
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177 |
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178 for ( ;; ) { |
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179 if (ngx_rename_file(temp_file->data, ctx->file.name.data) == NGX_OK) { |
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180 return NGX_OK; |
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181 } |
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182 |
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183 err = ngx_errno; |
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184 |
461 | 185 #if (NGX_WIN32) |
202
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186 if (err == NGX_EEXIST) { |
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187 if (ngx_win32_rename_file(temp_file, &ctx->file.name, r->pool) |
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188 == NGX_ERROR) |
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189 { |
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190 return NGX_ERROR; |
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191 } |
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192 } |
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193 #endif |
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194 |
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195 if (retry || (err != NGX_ENOENT && err != NGX_ENOTDIR)) { |
633 | 196 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, |
202
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197 ngx_rename_file_n "(\"%s\", \"%s\") failed", |
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198 temp_file->data, ctx->file.name.data); |
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199 |
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200 return NGX_ERROR; |
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Igor Sysoev <igor@sysoev.ru>
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201 } |
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202 |
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203 if (ngx_create_path(&ctx->file, ctx->path) == NGX_ERROR) { |
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204 return NGX_ERROR; |
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205 } |
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Igor Sysoev <igor@sysoev.ru>
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206 |
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207 retry = 1; |
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208 } |
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nginx-0.0.1-2003-12-01-19:28:14 import
Igor Sysoev <igor@sysoev.ru>
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209 } |
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210 |
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211 |
477 | 212 #endif |
213 | |
214 | |
215 ngx_int_t ngx_http_cache_cleaner_handler(ngx_gc_t *gc, ngx_str_t *name, | |
216 ngx_dir_t *dir) | |
202
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217 { |
477 | 218 int rc; |
219 ngx_buf_t buf; | |
220 ngx_http_cache_t c; | |
221 u_char data[sizeof(ngx_http_cache_header_t)]; | |
202
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222 |
477 | 223 ngx_memzero(&c, sizeof(ngx_http_cache_t)); |
224 | |
225 c.file.fd = NGX_INVALID_FILE; | |
226 c.file.name = *name; | |
227 c.file.log = gc->log; | |
202
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228 |
477 | 229 c.header_size = sizeof(ngx_http_cache_header_t); |
230 c.buf = &buf; | |
231 c.log = gc->log; | |
232 c.key_len = 0; | |
202
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233 |
477 | 234 buf.memory = 1; |
235 buf.temporary = 1; | |
202
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Igor Sysoev <igor@sysoev.ru>
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236 buf.pos = data; |
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237 buf.last = data; |
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238 buf.start = data; |
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nginx-0.0.1-2003-12-01-19:28:14 import
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239 buf.end = data + sizeof(ngx_http_cache_header_t); |
74994aeef848
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parents:
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240 |
477 | 241 rc = ngx_http_file_cache_open(&c); |
202
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parents:
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242 |
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243 /* TODO: NGX_AGAIN */ |
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244 |
477 | 245 if (rc != NGX_ERROR&& rc != NGX_DECLINED && rc != NGX_HTTP_CACHE_STALE) { |
202
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246 return NGX_OK; |
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parents:
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247 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
248 |
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parents:
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|
249 if (ngx_delete_file(name->data) == NGX_FILE_ERROR) { |
477 | 250 ngx_log_error(NGX_LOG_CRIT, c.log, ngx_errno, |
202
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
251 ngx_delete_file_n " \"%s\" failed", name->data); |
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252 return NGX_ERROR; |
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|
253 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
254 |
74994aeef848
nginx-0.0.1-2003-12-01-19:28:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
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|
255 gc->deleted++; |
74994aeef848
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
256 gc->freed += ngx_de_size(dir); |
74994aeef848
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
257 |
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258 return NGX_OK; |
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parents:
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|
259 } |