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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_FILE_H_INCLUDED_
#define _NGX_FILE_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
struct ngx_file_s {
ngx_fd_t fd;
ngx_str_t name;
ngx_file_info_t info;
off_t offset;
off_t sys_offset;
ngx_log_t *log;
#if (NGX_THREADS || NGX_COMPAT)
ngx_int_t (*thread_handler)(ngx_thread_task_t *task,
ngx_file_t *file);
void *thread_ctx;
ngx_thread_task_t *thread_task;
#endif
#if (NGX_HAVE_FILE_AIO || NGX_COMPAT)
ngx_event_aio_t *aio;
#endif
unsigned valid_info:1;
unsigned directio:1;
};
#define NGX_MAX_PATH_LEVEL 3
typedef ngx_msec_t (*ngx_path_manager_pt) (void *data);
typedef ngx_msec_t (*ngx_path_purger_pt) (void *data);
typedef void (*ngx_path_loader_pt) (void *data);
typedef struct {
ngx_str_t name;
size_t len;
size_t level[NGX_MAX_PATH_LEVEL];
ngx_path_manager_pt manager;
ngx_path_purger_pt purger;
ngx_path_loader_pt loader;
void *data;
u_char *conf_file;
ngx_uint_t line;
} ngx_path_t;
typedef struct {
ngx_str_t name;
size_t level[NGX_MAX_PATH_LEVEL];
} ngx_path_init_t;
typedef struct {
ngx_file_t file;
off_t offset;
ngx_path_t *path;
ngx_pool_t *pool;
char *warn;
ngx_uint_t access;
unsigned log_level:8;
unsigned persistent:1;
unsigned clean:1;
unsigned thread_write:1;
} ngx_temp_file_t;
typedef struct {
ngx_uint_t access;
ngx_uint_t path_access;
time_t time;
ngx_fd_t fd;
unsigned create_path:1;
unsigned delete_file:1;
ngx_log_t *log;
} ngx_ext_rename_file_t;
typedef struct {
off_t size;
size_t buf_size;
ngx_uint_t access;
time_t time;
ngx_log_t *log;
} ngx_copy_file_t;
typedef struct ngx_tree_ctx_s ngx_tree_ctx_t;
typedef ngx_int_t (*ngx_tree_init_handler_pt) (void *ctx, void *prev);
typedef ngx_int_t (*ngx_tree_handler_pt) (ngx_tree_ctx_t *ctx, ngx_str_t *name);
struct ngx_tree_ctx_s {
off_t size;
off_t fs_size;
ngx_uint_t access;
time_t mtime;
ngx_tree_init_handler_pt init_handler;
ngx_tree_handler_pt file_handler;
ngx_tree_handler_pt pre_tree_handler;
ngx_tree_handler_pt post_tree_handler;
ngx_tree_handler_pt spec_handler;
void *data;
size_t alloc;
ngx_log_t *log;
};
ngx_int_t ngx_get_full_name(ngx_pool_t *pool, ngx_str_t *prefix,
ngx_str_t *name);
ssize_t ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain);
ngx_int_t ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path,
ngx_pool_t *pool, ngx_uint_t persistent, ngx_uint_t clean,
ngx_uint_t access);
void ngx_create_hashed_filename(ngx_path_t *path, u_char *file, size_t len);
ngx_int_t ngx_create_path(ngx_file_t *file, ngx_path_t *path);
ngx_err_t ngx_create_full_path(u_char *dir, ngx_uint_t access);
ngx_int_t ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot);
ngx_int_t ngx_create_paths(ngx_cycle_t *cycle, ngx_uid_t user);
ngx_int_t ngx_ext_rename_file(ngx_str_t *src, ngx_str_t *to,
ngx_ext_rename_file_t *ext);
ngx_int_t ngx_copy_file(u_char *from, u_char *to, ngx_copy_file_t *cf);
ngx_int_t ngx_walk_tree(ngx_tree_ctx_t *ctx, ngx_str_t *tree);
ngx_atomic_uint_t ngx_next_temp_number(ngx_uint_t collision);
char *ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_merge_path_value(ngx_conf_t *cf, ngx_path_t **path,
ngx_path_t *prev, ngx_path_init_t *init);
char *ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
extern ngx_atomic_t *ngx_temp_number;
extern ngx_atomic_int_t ngx_random_number;
#endif /* _NGX_FILE_H_INCLUDED_ */
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