1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) Nginx, Inc. 5 */ 6 7 8 #include <ngx_config.h> 9 #include <ngx_core.h> 10 11 12 #ifndef _NGX_OPEN_FILE_CACHE_H_INCLUDED_ 13 #define _NGX_OPEN_FILE_CACHE_H_INCLUDED_ 14 15 16 #define NGX_OPEN_FILE_DIRECTIO_OFF NGX_MAX_OFF_T_VALUE 17 18 19 typedef struct { 20 ngx_fd_t fd; 21 ngx_file_uniq_t uniq; 22 time_t mtime; 23 off_t size; 24 off_t fs_size; 25 off_t directio; 26 size_t read_ahead; 27 28 ngx_err_t err; 29 char *failed; 30 31 time_t valid; 32 33 ngx_uint_t min_uses; 34 35 #if (NGX_HAVE_OPENAT) 36 size_t disable_symlinks_from; 37 unsigned disable_symlinks:2; 38 #endif 39 40 unsigned test_dir:1; 41 unsigned test_only:1; 42 unsigned log:1; 43 unsigned errors:1; 44 unsigned events:1; 45 46 unsigned is_dir:1; 47 unsigned is_file:1; 48 unsigned is_link:1; 49 unsigned is_exec:1; 50 unsigned is_directio:1; 51 } ngx_open_file_info_t; 52 53 54 typedef struct ngx_cached_open_file_s ngx_cached_open_file_t; 55 56 struct ngx_cached_open_file_s { 57 ngx_rbtree_node_t node; 58 ngx_queue_t queue; 59 60 u_char *name; 61 time_t created; 62 time_t accessed; 63 64 ngx_fd_t fd; 65 ngx_file_uniq_t uniq; 66 time_t mtime; 67 off_t size; 68 ngx_err_t err; 69 70 uint32_t uses; 71 72 #if (NGX_HAVE_OPENAT) 73 size_t disable_symlinks_from; 74 unsigned disable_symlinks:2; 75 #endif 76 77 unsigned count:24; 78 unsigned close:1; 79 unsigned use_event:1; 80 81 unsigned is_dir:1; 82 unsigned is_file:1; 83 unsigned is_link:1; 84 unsigned is_exec:1; 85 unsigned is_directio:1; 86 87 ngx_event_t *event; 88 }; 89 90 91 typedef struct { 92 ngx_rbtree_t rbtree; 93 ngx_rbtree_node_t sentinel; 94 ngx_queue_t expire_queue; 95 96 ngx_uint_t current; 97 ngx_uint_t max; 98 time_t inactive; 99 } ngx_open_file_cache_t; 100 101 102 typedef struct { 103 ngx_open_file_cache_t *cache; 104 ngx_cached_open_file_t *file; 105 ngx_uint_t min_uses; 106 ngx_log_t *log; 107 } ngx_open_file_cache_cleanup_t; 108 109 110 typedef struct { 111 112 /* ngx_connection_t stub to allow use c->fd as event ident */ 113 void *data; 114 ngx_event_t *read; 115 ngx_event_t *write; 116 ngx_fd_t fd; 117 118 ngx_cached_open_file_t *file; 119 ngx_open_file_cache_t *cache; 120 } ngx_open_file_cache_event_t; 121 122 123 ngx_open_file_cache_t *ngx_open_file_cache_init(ngx_pool_t *pool, 124 ngx_uint_t max, time_t inactive); 125 ngx_int_t ngx_open_cached_file(ngx_open_file_cache_t *cache, ngx_str_t *name, 126 ngx_open_file_info_t *of, ngx_pool_t *pool); 127 128 129 #endif /* _NGX_OPEN_FILE_CACHE_H_INCLUDED_ */ 130