Handle find-doc-nits script rename
[openssl.git] / crypto / dllmain.c
1 /*
2  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the OpenSSL license (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9
10 #include "internal/cryptlib_int.h"
11
12 #if defined(_WIN32) || defined(__CYGWIN__)
13 # ifdef __CYGWIN__
14 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
15 #  include <windows.h>
16 /*
17  * this has side-effect of _WIN32 getting defined, which otherwise is
18  * mutually exclusive with __CYGWIN__...
19  */
20 # endif
21
22 /*
23  * All we really need to do is remove the 'error' state when a thread
24  * detaches
25  */
26
27 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved);
28 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
29 {
30     switch (fdwReason) {
31     case DLL_PROCESS_ATTACH:
32         OPENSSL_cpuid_setup();
33 # if defined(_WIN32_WINNT)
34         {
35             IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *) hinstDLL;
36             IMAGE_NT_HEADERS *nt_headers;
37
38             if (dos_header->e_magic == IMAGE_DOS_SIGNATURE) {
39                 nt_headers = (IMAGE_NT_HEADERS *) ((char *)dos_header
40                                                    + dos_header->e_lfanew);
41                 if (nt_headers->Signature == IMAGE_NT_SIGNATURE &&
42                     hinstDLL !=
43                     (HINSTANCE) (nt_headers->OptionalHeader.ImageBase))
44                     OPENSSL_NONPIC_relocated = 1;
45             }
46         }
47 # endif
48         break;
49     case DLL_THREAD_ATTACH:
50         break;
51     case DLL_THREAD_DETACH:
52         OPENSSL_thread_stop();
53         break;
54     case DLL_PROCESS_DETACH:
55         break;
56     }
57     return (TRUE);
58 }
59 #endif
60