Mercurial > hg > nginx
annotate src/core/ngx_buf.h @ 485:4ebe09b07e30 release-0.1.17
nginx-0.1.17-RELEASE import
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; the bug had appeared in
0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 03 Feb 2005 19:33:37 +0000 |
parents | c52408583801 |
children | 64d9afb209da |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #ifndef _NGX_BUF_H_INCLUDED_ |
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8 #define _NGX_BUF_H_INCLUDED_ |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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15 typedef void * ngx_buf_tag_t; |
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17 typedef struct ngx_buf_s ngx_buf_t; |
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19 struct ngx_buf_s { |
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20 u_char *pos; |
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21 u_char *last; |
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22 off_t file_pos; |
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23 off_t file_last; |
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24 |
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25 u_char *start; /* start of buffer */ |
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26 u_char *end; /* end of buffer */ |
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27 ngx_buf_tag_t tag; |
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28 ngx_file_t *file; |
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29 ngx_buf_t *shadow; |
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30 |
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32 /* the buf's content could be changed */ |
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33 unsigned temporary:1; |
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34 |
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35 /* |
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36 * the buf's content is in a memory cache or in a read only memory |
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37 * and must not be changed |
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38 */ |
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39 unsigned memory:1; |
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40 |
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41 /* the buf's content is mmap()ed and must not be changed */ |
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42 unsigned mmap:1; |
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44 unsigned recycled:1; |
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45 unsigned in_file:1; |
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46 unsigned flush:1; |
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47 unsigned last_buf:1; |
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48 |
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49 unsigned last_shadow:1; |
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50 unsigned temp_file:1; |
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51 |
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52 unsigned zerocopy_busy:1; |
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53 |
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54 /* STUB */ int num; |
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55 }; |
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58 typedef struct ngx_chain_s ngx_chain_t; |
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59 |
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60 struct ngx_chain_s { |
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61 ngx_buf_t *buf; |
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62 ngx_chain_t *next; |
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63 }; |
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66 typedef struct { |
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67 ngx_int_t num; |
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68 size_t size; |
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69 } ngx_bufs_t; |
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479 | 72 typedef ngx_int_t (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *in); |
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73 |
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74 typedef struct { |
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75 ngx_buf_t *buf; |
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76 ngx_chain_t *in; |
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77 ngx_chain_t *free; |
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78 ngx_chain_t *busy; |
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79 |
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80 unsigned sendfile; |
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81 unsigned need_in_memory; |
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82 unsigned need_in_temp; |
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83 |
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84 ngx_pool_t *pool; |
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85 ngx_int_t allocated; |
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86 ngx_bufs_t bufs; |
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87 ngx_buf_tag_t tag; |
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88 |
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89 ngx_output_chain_filter_pt output_filter; |
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90 void *filter_ctx; |
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91 } ngx_output_chain_ctx_t; |
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92 |
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93 |
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94 typedef struct { |
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95 ngx_chain_t *out; |
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96 ngx_chain_t **last; |
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97 ngx_connection_t *connection; |
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98 ngx_pool_t *pool; |
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99 off_t limit; |
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100 } ngx_chain_writer_ctx_t; |
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101 |
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102 |
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103 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR |
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104 |
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105 |
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106 #define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap) |
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107 #define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file) |
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108 #define ngx_buf_special(b) \ |
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109 ((b->flush || b->last_buf) && !ngx_buf_in_memory(b) && !b->in_file) |
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110 |
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111 #define ngx_buf_size(b) \ |
473 | 112 (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \ |
113 (b->file_last - b->file_pos)) | |
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114 |
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115 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size); |
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116 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs); |
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117 |
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118 |
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119 #define ngx_alloc_buf(pool) ngx_palloc(pool, sizeof(ngx_buf_t)) |
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120 #define ngx_calloc_buf(pool) ngx_pcalloc(pool, sizeof(ngx_buf_t)) |
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121 |
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122 |
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123 #define ngx_alloc_chain_link(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) |
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124 |
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125 |
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126 #define ngx_alloc_link_and_set_buf(chain, b, pool, error) \ |
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127 do { \ |
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128 ngx_test_null(chain, ngx_alloc_chain_link(pool), error); \ |
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129 chain->buf = b; \ |
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130 chain->next = NULL; \ |
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131 } while (0); |
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132 |
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133 |
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134 #define ngx_chain_add_link(chain, last, cl) \ |
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135 if (chain) { \ |
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136 *last = cl; \ |
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137 } else { \ |
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138 chain = cl; \ |
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139 } \ |
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140 last = &cl->next |
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141 |
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142 |
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143 ngx_int_t ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in); |
479 | 144 ngx_int_t ngx_chain_writer(void *ctx, ngx_chain_t *in); |
162
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145 |
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146 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, |
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147 ngx_chain_t *in); |
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148 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy, |
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149 ngx_chain_t **out, ngx_buf_tag_t tag); |
134
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150 |
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151 |
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152 #endif /* _NGX_BUF_H_INCLUDED_ */ |