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1 | | /* |
2 | | * Copyright (C) 2010-2012 Free Software Foundation, Inc. |
3 | | * Copyright (C) 2014 Red Hat |
4 | | * |
5 | | * Author: Nikos Mavrogiannopoulos |
6 | | * |
7 | | * This file is part of GnuTLS. |
8 | | * |
9 | | * The GnuTLS is free software; you can redistribute it and/or |
10 | | * modify it under the terms of the GNU Lesser General Public License |
11 | | * as published by the Free Software Foundation; either version 2.1 of |
12 | | * the License, or (at your option) any later version. |
13 | | * |
14 | | * This library is distributed in the hope that it will be useful, but |
15 | | * WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | | * Lesser General Public License for more details. |
18 | | * |
19 | | * You should have received a copy of the GNU Lesser General Public License |
20 | | * along with this program. If not, see <https://www.gnu.org/licenses/> |
21 | | * |
22 | | */ |
23 | | |
24 | | #include "config.h" |
25 | | #include "gnutls_int.h" |
26 | | #include "errors.h" |
27 | | |
28 | | #include <sys/socket.h> |
29 | | #include <errno.h> |
30 | | #include <sys/stat.h> |
31 | | #include <sys/types.h> |
32 | | #include "atfork.h" |
33 | | |
34 | | unsigned int _gnutls_forkid = 0; |
35 | | |
36 | | #ifndef _WIN32 |
37 | | |
38 | | #ifdef HAVE_ATFORK |
39 | | static void fork_handler(void) |
40 | 0 | { |
41 | 0 | _gnutls_forkid++; |
42 | 0 | } |
43 | | #endif |
44 | | |
45 | | #if defined(HAVE___REGISTER_ATFORK) |
46 | | extern int __register_atfork(void (*)(void), void (*)(void), void (*)(void), |
47 | | void *); |
48 | | extern void *__dso_handle; |
49 | | |
50 | | int _gnutls_register_fork_handler(void) |
51 | 2 | { |
52 | 2 | if (__register_atfork(NULL, NULL, fork_handler, __dso_handle) != 0) |
53 | 0 | return gnutls_assert_val(GNUTLS_E_INTERNAL_ERROR); |
54 | 2 | return 0; |
55 | 2 | } |
56 | | |
57 | | #else |
58 | | |
59 | | unsigned int _gnutls_get_forkid(void) |
60 | | { |
61 | | return getpid(); |
62 | | } |
63 | | |
64 | | int _gnutls_detect_fork(unsigned int forkid) |
65 | | { |
66 | | if ((unsigned int)getpid() == forkid) |
67 | | return 0; |
68 | | return 1; |
69 | | } |
70 | | |
71 | | /* we have to detect fork manually */ |
72 | | int _gnutls_register_fork_handler(void) |
73 | | { |
74 | | _gnutls_forkid = getpid(); |
75 | | return 0; |
76 | | } |
77 | | |
78 | | #endif |
79 | | |
80 | | #endif /* !_WIN32 */ |