view src/os/win32/ngx_errno.h @ 5992:174512857ccf

Cache: do not inherit last_modified and etag from stale response. When replacing a stale cache entry, its last_modified and etag could be inherited from the old entry if the response code is not 200 or 206. Moreover, etag could be inherited with any response code if it's missing in the new response. As a result, the cache entry is left with invalid last_modified or etag which could lead to broken revalidation. For example, when a file is deleted from backend, its last_modified is copied to the new 404 cache entry and is used later for revalidation. Once the old file appears again with its original timestamp, revalidation succeeds and the cached 404 response is sent to client instead of the file. The problem appeared with etags in 44b9ab7752e3 (1.7.3) and affected last_modified in 1573fc7875fa (1.7.9).
author Roman Arutyunyan <arut@nginx.com>
date Mon, 02 Mar 2015 19:47:13 +0300
parents 3c5ddf0575d8
children a5897d360977
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_ERRNO_H_INCLUDED_
#define _NGX_ERRNO_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


typedef DWORD                      ngx_err_t;

#define ngx_errno                  GetLastError()
#define ngx_set_errno(err)         SetLastError(err)
#define ngx_socket_errno           WSAGetLastError()
#define ngx_set_socket_errno(err)  WSASetLastError(err)

#define NGX_EPERM                  ERROR_ACCESS_DENIED
#define NGX_ENOENT                 ERROR_FILE_NOT_FOUND
#define NGX_ENOPATH                ERROR_PATH_NOT_FOUND
#define NGX_ENOMEM                 ERROR_NOT_ENOUGH_MEMORY
#define NGX_EACCES                 ERROR_ACCESS_DENIED
/* it's seems that ERROR_FILE_EXISTS is not appropriate error code */
#define NGX_EEXIST                 ERROR_ALREADY_EXISTS
/*
 * could not found cross volume directory move error code,
 * so use ERROR_WRONG_DISK as stub one
 */
#define NGX_EXDEV                  ERROR_WRONG_DISK
#define NGX_ENOTDIR                ERROR_PATH_NOT_FOUND
#define NGX_EISDIR                 ERROR_CANNOT_MAKE
#define NGX_ENOSPC                 ERROR_DISK_FULL
#define NGX_EPIPE                  EPIPE
#define NGX_EAGAIN                 WSAEWOULDBLOCK
#define NGX_EINPROGRESS            WSAEINPROGRESS
#define NGX_ENOPROTOOPT            WSAENOPROTOOPT
#define NGX_EOPNOTSUPP             WSAEOPNOTSUPP
#define NGX_EADDRINUSE             WSAEADDRINUSE
#define NGX_ECONNABORTED           WSAECONNABORTED
#define NGX_ECONNRESET             WSAECONNRESET
#define NGX_ENOTCONN               WSAENOTCONN
#define NGX_ETIMEDOUT              WSAETIMEDOUT
#define NGX_ECONNREFUSED           WSAECONNREFUSED
#define NGX_ENAMETOOLONG           ERROR_BAD_PATHNAME
#define NGX_ENETDOWN               WSAENETDOWN
#define NGX_ENETUNREACH            WSAENETUNREACH
#define NGX_EHOSTDOWN              WSAEHOSTDOWN
#define NGX_EHOSTUNREACH           WSAEHOSTUNREACH
#define NGX_ENOMOREFILES           ERROR_NO_MORE_FILES
#define NGX_EILSEQ                 ERROR_NO_UNICODE_TRANSLATION
#define NGX_ELOOP                  0
#define NGX_EBADF                  WSAEBADF

#define NGX_EALREADY               WSAEALREADY
#define NGX_EINVAL                 WSAEINVAL
#define NGX_EMFILE                 WSAEMFILE
#define NGX_ENFILE                 WSAEMFILE


u_char *ngx_strerror(ngx_err_t err, u_char *errstr, size_t size);
ngx_int_t ngx_strerror_init(void);


#endif /* _NGX_ERRNO_H_INCLUDED_ */