annotate src/core/ngx_buf.h @ 581:326634fb9d47 release-0.3.12

nginx-0.3.12-RELEASE import *) Security: if nginx was built with the ngx_http_realip_module and the "satisfy_any on" directive was used, then access and authorization directives did not work. The ngx_http_realip_module was not built and is not built by default. *) Change: the "$time_gmt" variable name was changed to "$time_local". *) Change: the "proxy_header_buffer_size" and "fastcgi_header_buffer_size" directives was renamed to the "proxy_buffer_size" and "fastcgi_buffer_size" directives. *) Feature: the ngx_http_memcached_module. *) Feature: the "proxy_buffering" directive. *) Bugfix: the changes in accept mutex handling when the "rtsig" method was used; the bug had appeared in 0.3.0. *) Bugfix: if the client sent the "Transfer-Encoding: chunked" header line, then nginx returns the 411 error. *) Bugfix: if the "auth_basic" directive was inherited from the http level, then the realm in the "WWW-Authenticate" header line was without the "Basic realm" text. *) Bugfix: if the "combined" format was explicitly specified in the "access_log" directive, then the empty lines was written to the log; the bug had appeared in 0.3.8. *) Bugfix: nginx did not run on the sparc platform under any OS except Solaris. *) Bugfix: now it is not necessary to place space between the quoted string and closing bracket in the "if" directive.
author Igor Sysoev <igor@sysoev.ru>
date Sat, 26 Nov 2005 10:11:11 +0000
parents 9b8c906f6e63
children ebc68d8ca496
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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6
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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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32 /* the buf's content could be changed */
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33 unsigned temporary:1;
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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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43
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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 sync:1;
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48 unsigned last_buf:1;
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49 unsigned last_in_chain:1;
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51 unsigned last_shadow:1;
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52 unsigned temp_file:1;
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54 unsigned zerocopy_busy:1;
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55
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56 /* STUB */ int num;
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57 };
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58
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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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65
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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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71
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72 typedef ngx_int_t (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *in);
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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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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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105
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parents: 294
diff changeset
106 #define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap)
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
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107 #define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file)
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
108 #define ngx_buf_special(b) \
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9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 507
diff changeset
109 ((b->flush || b->last_buf || b->sync) \
9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 507
diff changeset
110 && !ngx_buf_in_memory(b) && !b->in_file)
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6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
111
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
112 #define ngx_buf_size(b) \
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64d9afb209da nginx-0.1.24-RELEASE import
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parents: 479
diff changeset
113 (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \
64d9afb209da nginx-0.1.24-RELEASE import
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diff changeset
114 (b->file_last - b->file_pos))
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6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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diff changeset
115
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
116 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size);
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
117 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs);
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708f8bb772ec nginx-0.0.1-2002-09-02-18:48:24 import
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parents: 7
diff changeset
118
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119
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
120 #define ngx_alloc_buf(pool) ngx_palloc(pool, sizeof(ngx_buf_t))
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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diff changeset
121 #define ngx_calloc_buf(pool) ngx_pcalloc(pool, sizeof(ngx_buf_t))
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869b10be682f nginx-0.0.1-2003-04-14-21:04:58 import
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parents: 74
diff changeset
122
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cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
123 ngx_chain_t *ngx_alloc_chain_link(ngx_pool_t *pool);
cd3117ad9aab nginx-0.1.28-RELEASE import
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parents: 501
diff changeset
124 #define ngx_free_chain(pool, cl) \
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
125 cl->next = pool->chain; \
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
126 pool->chain = cl
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
127
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
128
7
b5481d6fbbd4 nginx-0.0.1-2002-08-29-20:59:54 import
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parents: 6
diff changeset
129
356
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 348
diff changeset
130 ngx_int_t ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in);
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c52408583801 nginx-0.1.14-RELEASE import
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parents: 473
diff changeset
131 ngx_int_t ngx_chain_writer(void *ctx, ngx_chain_t *in);
162
96993d4d5067 nginx-0.0.1-2003-10-28-00:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 160
diff changeset
132
356
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
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parents: 348
diff changeset
133 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain,
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64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
134 ngx_chain_t *in);
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326634fb9d47 nginx-0.3.12-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
135 ngx_chain_t *ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free);
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
136 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
137 ngx_chain_t **out, ngx_buf_tag_t tag);
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
138
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
139
343
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parents: 294
diff changeset
140 #endif /* _NGX_BUF_H_INCLUDED_ */