Mercurial > hg > nginx
annotate src/http/ngx_http_copy_filter_module.c @ 3053:0d253659da12
directio_alignment
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 28 Aug 2009 08:15:55 +0000 |
parents | 6060225e9261 |
children | aa720192937b |
rev | line source |
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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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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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12 typedef struct { |
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13 ngx_bufs_t bufs; |
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14 } ngx_http_copy_filter_conf_t; |
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17 #if (NGX_HAVE_FILE_AIO) |
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18 static void ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx, |
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19 ngx_file_t *file); |
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20 static void ngx_http_copy_aio_event_handler(ngx_event_t *ev); |
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21 #endif |
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22 |
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23 static void *ngx_http_copy_filter_create_conf(ngx_conf_t *cf); |
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24 static char *ngx_http_copy_filter_merge_conf(ngx_conf_t *cf, |
501 | 25 void *parent, void *child); |
681 | 26 static ngx_int_t ngx_http_copy_filter_init(ngx_conf_t *cf); |
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27 |
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29 static ngx_command_t ngx_http_copy_filter_commands[] = { |
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30 |
501 | 31 { ngx_string("output_buffers"), |
32 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
33 ngx_conf_set_bufs_slot, | |
34 NGX_HTTP_LOC_CONF_OFFSET, | |
35 offsetof(ngx_http_copy_filter_conf_t, bufs), | |
36 NULL }, | |
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37 |
501 | 38 ngx_null_command |
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39 }; |
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42 static ngx_http_module_t ngx_http_copy_filter_module_ctx = { |
509 | 43 NULL, /* preconfiguration */ |
681 | 44 ngx_http_copy_filter_init, /* postconfiguration */ |
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45 |
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46 NULL, /* create main configuration */ |
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47 NULL, /* init main configuration */ |
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48 |
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49 NULL, /* create server configuration */ |
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50 NULL, /* merge server configuration */ |
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52 ngx_http_copy_filter_create_conf, /* create location configuration */ |
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53 ngx_http_copy_filter_merge_conf /* merge location configuration */ |
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54 }; |
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56 |
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57 ngx_module_t ngx_http_copy_filter_module = { |
509 | 58 NGX_MODULE_V1, |
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59 &ngx_http_copy_filter_module_ctx, /* module context */ |
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60 ngx_http_copy_filter_commands, /* module directives */ |
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61 NGX_HTTP_MODULE, /* module type */ |
541 | 62 NULL, /* init master */ |
681 | 63 NULL, /* init module */ |
541 | 64 NULL, /* init process */ |
65 NULL, /* init thread */ | |
66 NULL, /* exit thread */ | |
67 NULL, /* exit process */ | |
68 NULL, /* exit master */ | |
69 NGX_MODULE_V1_PADDING | |
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70 }; |
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71 |
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72 |
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73 static ngx_http_output_body_filter_pt ngx_http_next_filter; |
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74 |
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75 |
501 | 76 static ngx_int_t |
77 ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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78 { |
583 | 79 ngx_int_t rc; |
80 ngx_connection_t *c; | |
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81 ngx_output_chain_ctx_t *ctx; |
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82 ngx_http_core_loc_conf_t *clcf; |
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83 ngx_http_copy_filter_conf_t *conf; |
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84 |
583 | 85 c = r->connection; |
86 | |
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87 if (r->aio) { |
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88 return NGX_AGAIN; |
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89 } |
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90 |
583 | 91 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
92 "copy filter: \"%V?%V\"", &r->uri, &r->args); | |
509 | 93 |
94 ctx = ngx_http_get_module_ctx(r, ngx_http_copy_filter_module); | |
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95 |
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96 if (ctx == NULL) { |
501 | 97 ctx = ngx_pcalloc(r->pool, sizeof(ngx_output_chain_ctx_t)); |
98 if (ctx == NULL) { | |
99 return NGX_ERROR; | |
100 } | |
101 | |
102 ngx_http_set_ctx(r, ctx, ngx_http_copy_filter_module); | |
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103 |
3053 | 104 conf = ngx_http_get_module_loc_conf(r, ngx_http_copy_filter_module); |
105 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
106 | |
583 | 107 ctx->sendfile = c->sendfile; |
513 | 108 ctx->need_in_memory = r->main_filter_need_in_memory |
109 || r->filter_need_in_memory; | |
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110 ctx->need_in_temp = r->filter_need_temporary; |
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111 |
3053 | 112 ctx->alignment = clcf->directio_alignment; |
113 | |
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114 ctx->pool = r->pool; |
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115 ctx->bufs = conf->bufs; |
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116 ctx->tag = (ngx_buf_tag_t) &ngx_http_copy_filter_module; |
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117 |
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118 ctx->output_filter = (ngx_output_chain_filter_pt) ngx_http_next_filter; |
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119 ctx->filter_ctx = r; |
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120 |
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121 #if (NGX_HAVE_FILE_AIO) |
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122 if (clcf->aio) { |
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123 ctx->aio = ngx_http_copy_aio_handler; |
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124 } |
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125 #endif |
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126 |
667 | 127 r->request_output = 1; |
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128 } |
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129 |
583 | 130 rc = ngx_output_chain(ctx, in); |
509 | 131 |
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132 if (ctx->in == NULL) { |
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133 r->buffered &= ~NGX_HTTP_COPY_BUFFERED; |
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134 |
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135 } else { |
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136 r->buffered |= NGX_HTTP_COPY_BUFFERED; |
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137 } |
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138 |
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139 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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140 "copy filter: %i \"%V?%V\"", rc, &r->uri, &r->args); |
583 | 141 |
142 return rc; | |
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143 } |
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144 |
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145 |
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146 #if (NGX_HAVE_FILE_AIO) |
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147 |
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148 static void |
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149 ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx, ngx_file_t *file) |
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150 { |
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151 ngx_http_request_t *r; |
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152 |
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153 r = ctx->filter_ctx; |
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154 |
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155 file->aio->data = r; |
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156 file->aio->handler = ngx_http_copy_aio_event_handler; |
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157 |
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158 r->main->blocked++; |
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159 r->aio = 1; |
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160 } |
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161 |
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162 |
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163 static void |
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164 ngx_http_copy_aio_event_handler(ngx_event_t *ev) |
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165 { |
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166 ngx_event_aio_t *aio; |
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167 ngx_http_request_t *r; |
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168 |
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169 aio = ev->data; |
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170 r = aio->data; |
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171 |
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172 r->main->blocked--; |
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173 r->aio = 0; |
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174 |
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175 r->connection->write->handler(r->connection->write); |
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176 } |
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177 |
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178 #endif |
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179 |
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180 |
501 | 181 static void * |
182 ngx_http_copy_filter_create_conf(ngx_conf_t *cf) | |
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183 { |
334
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184 ngx_http_copy_filter_conf_t *conf; |
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185 |
501 | 186 conf = ngx_palloc(cf->pool, sizeof(ngx_http_copy_filter_conf_t)); |
187 if (conf == NULL) { | |
188 return NULL; | |
189 } | |
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190 |
141
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191 conf->bufs.num = 0; |
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192 |
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193 return conf; |
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194 } |
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195 |
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196 |
501 | 197 static char * |
198 ngx_http_copy_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
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199 { |
334
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200 ngx_http_copy_filter_conf_t *prev = parent; |
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201 ngx_http_copy_filter_conf_t *conf = child; |
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202 |
160
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203 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 1, 32768); |
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204 |
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205 return NULL; |
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206 } |
334
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207 |
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208 |
501 | 209 static ngx_int_t |
681 | 210 ngx_http_copy_filter_init(ngx_conf_t *cf) |
334
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211 { |
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212 ngx_http_next_filter = ngx_http_top_body_filter; |
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213 ngx_http_top_body_filter = ngx_http_copy_filter; |
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214 |
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215 return NGX_OK; |
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216 } |
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217 |