annotate src/core/ngx_file.h @ 514:43cc6f0b77ce NGINX_0_8_9

nginx 0.8.9 *) Feature: now the start cache loader runs in a separate process; this should improve large caches handling. *) Feature: now temporarily files and permanent storage area may reside at different file systems.
author Igor Sysoev <http://sysoev.ru>
date Mon, 17 Aug 2009 00:00:00 +0400
parents 56baf312c1b5
children 7efcdb937752
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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_FILE_H_INCLUDED_
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8 #define _NGX_FILE_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 struct ngx_file_s {
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16 ngx_fd_t fd;
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17 ngx_str_t name;
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18 ngx_file_info_t info;
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20 off_t offset;
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21 off_t sys_offset;
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23 ngx_log_t *log;
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25 unsigned valid_info:1;
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26 unsigned directio:1;
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27 };
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29 #define NGX_MAX_PATH_LEVEL 3
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32 typedef time_t (*ngx_path_manager_pt) (void *data);
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33 typedef void (*ngx_path_loader_pt) (void *data);
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36 typedef struct {
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37 ngx_str_t name;
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38 size_t len;
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39 size_t level[3];
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41 ngx_path_manager_pt manager;
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42 ngx_path_loader_pt loader;
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43 void *data;
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44
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45 u_char *conf_file;
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46 ngx_uint_t line;
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47 } ngx_path_t;
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50 typedef struct {
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51 ngx_str_t name;
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52 size_t level[3];
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53 } ngx_path_init_t;
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56 typedef struct {
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57 ngx_file_t file;
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58 off_t offset;
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59 ngx_path_t *path;
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60 ngx_pool_t *pool;
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61 char *warn;
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63 ngx_uint_t access;
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64
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65 unsigned log_level:8;
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66 unsigned persistent:1;
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67 unsigned clean:1;
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68 } ngx_temp_file_t;
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71 typedef struct {
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72 ngx_uint_t access;
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73 ngx_uint_t path_access;
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74 time_t time;
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75 ngx_fd_t fd;
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77 unsigned create_path:1;
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78 unsigned delete_file:1;
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80 ngx_log_t *log;
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81 } ngx_ext_rename_file_t;
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84 typedef struct {
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85 off_t size;
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86 size_t buf_size;
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87
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88 ngx_uint_t access;
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89 time_t time;
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90
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91 ngx_log_t *log;
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92 } ngx_copy_file_t;
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94
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95 typedef struct ngx_tree_ctx_s ngx_tree_ctx_t;
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96
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97 typedef ngx_int_t (*ngx_tree_init_handler_pt) (void *ctx, void *prev);
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98 typedef ngx_int_t (*ngx_tree_handler_pt) (ngx_tree_ctx_t *ctx, ngx_str_t *name);
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99
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100 struct ngx_tree_ctx_s {
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101 off_t size;
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102 ngx_uint_t access;
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103 time_t mtime;
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104
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105 ngx_tree_init_handler_pt init_handler;
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106 ngx_tree_handler_pt file_handler;
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107 ngx_tree_handler_pt pre_tree_handler;
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108 ngx_tree_handler_pt post_tree_handler;
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109 ngx_tree_handler_pt spec_handler;
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110
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111 void *data;
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112 size_t alloc;
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113
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114 ngx_log_t *log;
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115 };
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117
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118 ssize_t ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain);
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119 ngx_int_t ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path,
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120 ngx_pool_t *pool, ngx_uint_t persistent, ngx_uint_t clean,
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121 ngx_uint_t access);
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122 void ngx_create_hashed_filename(ngx_path_t *path, u_char *file, size_t len);
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123 ngx_int_t ngx_create_path(ngx_file_t *file, ngx_path_t *path);
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124 ngx_err_t ngx_create_full_path(u_char *dir, ngx_uint_t access);
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125 ngx_int_t ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot);
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126 ngx_int_t ngx_create_pathes(ngx_cycle_t *cycle, ngx_uid_t user);
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127 ngx_int_t ngx_ext_rename_file(ngx_str_t *src, ngx_str_t *to,
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128 ngx_ext_rename_file_t *ext);
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129 ngx_int_t ngx_copy_file(u_char *from, u_char *to, ngx_copy_file_t *cf);
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130 ngx_int_t ngx_walk_tree(ngx_tree_ctx_t *ctx, ngx_str_t *tree);
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132 void ngx_init_temp_number(void);
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133 ngx_atomic_uint_t ngx_next_temp_number(ngx_uint_t collision);
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134
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135 char *ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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136 char *ngx_conf_merge_path_value(ngx_conf_t *cf, ngx_path_t **path,
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137 ngx_path_t *prev, ngx_path_init_t *init);
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138 char *ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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141 #endif /* _NGX_FILE_H_INCLUDED_ */