2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib_int.h"
12 #include <openssl/err.h>
13 #include "internal/rand_int.h"
14 #include "internal/bio.h"
15 #include <openssl/evp.h>
16 #include "internal/evp_int.h"
17 #include "internal/conf.h"
18 #include "internal/async.h"
19 #include "internal/engine.h"
20 #include "internal/comp.h"
21 #include "internal/err.h"
22 #include "internal/err_int.h"
23 #include "internal/objects.h"
26 #include "internal/thread_once.h"
27 #include "internal/dso.h"
28 #include "internal/store.h"
31 typedef struct global_lock_st
{
34 struct global_lock_st
*next
;
37 static GLOBAL_LOCK
*global_locks
;
39 static int stopped
= 0;
41 static void ossl_init_thread_stop(struct thread_local_inits_st
*locals
);
43 static CRYPTO_THREAD_LOCAL threadstopkey
;
45 static void ossl_init_thread_stop_wrap(void *local
)
47 ossl_init_thread_stop((struct thread_local_inits_st
*)local
);
50 static struct thread_local_inits_st
*ossl_init_get_thread_local(int alloc
)
52 struct thread_local_inits_st
*local
=
53 CRYPTO_THREAD_get_local(&threadstopkey
);
55 if (local
== NULL
&& alloc
) {
56 local
= OPENSSL_zalloc(sizeof(*local
));
57 if (local
!= NULL
&& !CRYPTO_THREAD_set_local(&threadstopkey
, local
)) {
63 CRYPTO_THREAD_set_local(&threadstopkey
, NULL
);
69 typedef struct ossl_init_stop_st OPENSSL_INIT_STOP
;
70 struct ossl_init_stop_st
{
71 void (*handler
)(void);
72 OPENSSL_INIT_STOP
*next
;
75 static CRYPTO_RWLOCK
*glock_lock
= NULL
;
77 static OPENSSL_INIT_STOP
*stop_handlers
= NULL
;
78 static CRYPTO_RWLOCK
*init_lock
= NULL
;
80 static CRYPTO_ONCE base
= CRYPTO_ONCE_STATIC_INIT
;
81 static int base_inited
= 0;
82 DEFINE_RUN_ONCE_STATIC(ossl_init_base
)
84 #ifdef OPENSSL_INIT_DEBUG
85 fprintf(stderr
, "OPENSSL_INIT: ossl_init_base: Setting up stop handlers\n");
87 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
88 ossl_malloc_setup_failures();
91 * We use a dummy thread local key here. We use the destructor to detect
92 * when the thread is going to stop (where that feature is available)
94 CRYPTO_THREAD_init_local(&threadstopkey
, ossl_init_thread_stop_wrap
);
95 #ifndef OPENSSL_SYS_UEFI
96 atexit(OPENSSL_cleanup
);
98 /* Do not change this to glock's! */
99 if ((init_lock
= CRYPTO_THREAD_lock_new()) == NULL
)
101 OPENSSL_cpuid_setup();
105 * Everything needed to be initialized in this function before threads
106 * come along MUST happen before base_inited is set to 1, or we will
107 * see race conditions.
111 #if !defined(OPENSSL_NO_DSO) && !defined(OPENSSL_USE_NODELETE)
114 HMODULE handle
= NULL
;
117 /* We don't use the DSO route for WIN32 because there is a better way */
118 ret
= GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
119 | GET_MODULE_HANDLE_EX_FLAG_PIN
,
120 (void *)&base_inited
, &handle
);
122 return (ret
== TRUE
) ? 1 : 0;
126 * Deliberately leak a reference to ourselves. This will force the library
127 * to remain loaded until the atexit() handler is run at process exit.
133 dso
= DSO_dsobyaddr(&base_inited
, DSO_FLAG_NO_UNLOAD_ON_FREE
);
143 static CRYPTO_ONCE load_crypto_strings
= CRYPTO_ONCE_STATIC_INIT
;
144 static int load_crypto_strings_inited
= 0;
145 DEFINE_RUN_ONCE_STATIC(ossl_init_no_load_crypto_strings
)
147 /* Do nothing in this case */
151 DEFINE_RUN_ONCE_STATIC(ossl_init_load_crypto_strings
)
155 * OPENSSL_NO_AUTOERRINIT is provided here to prevent at compile time
156 * pulling in all the error strings during static linking
158 #if !defined(OPENSSL_NO_ERR) && !defined(OPENSSL_NO_AUTOERRINIT)
159 # ifdef OPENSSL_INIT_DEBUG
160 fprintf(stderr
, "OPENSSL_INIT: ossl_init_load_crypto_strings: "
161 "err_load_crypto_strings_int()\n");
163 ret
= err_load_crypto_strings_int();
164 load_crypto_strings_inited
= 1;
169 static CRYPTO_ONCE add_all_ciphers
= CRYPTO_ONCE_STATIC_INIT
;
170 DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_ciphers
)
173 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
174 * pulling in all the ciphers during static linking
176 #ifndef OPENSSL_NO_AUTOALGINIT
177 # ifdef OPENSSL_INIT_DEBUG
178 fprintf(stderr
, "OPENSSL_INIT: ossl_init_add_all_ciphers: "
179 "openssl_add_all_ciphers_int()\n");
181 openssl_add_all_ciphers_int();
186 static CRYPTO_ONCE add_all_digests
= CRYPTO_ONCE_STATIC_INIT
;
187 DEFINE_RUN_ONCE_STATIC(ossl_init_add_all_digests
)
190 * OPENSSL_NO_AUTOALGINIT is provided here to prevent at compile time
191 * pulling in all the ciphers during static linking
193 #ifndef OPENSSL_NO_AUTOALGINIT
194 # ifdef OPENSSL_INIT_DEBUG
195 fprintf(stderr
, "OPENSSL_INIT: ossl_init_add_all_digests: "
196 "openssl_add_all_digests()\n");
198 openssl_add_all_digests_int();
203 DEFINE_RUN_ONCE_STATIC(ossl_init_no_add_algs
)
209 static CRYPTO_ONCE config
= CRYPTO_ONCE_STATIC_INIT
;
210 static int config_inited
= 0;
211 static const char *appname
;
212 DEFINE_RUN_ONCE_STATIC(ossl_init_config
)
214 #ifdef OPENSSL_INIT_DEBUG
216 "OPENSSL_INIT: ossl_init_config: openssl_config(%s)\n",
217 appname
== NULL
? "NULL" : appname
);
219 openssl_config_int(appname
);
223 DEFINE_RUN_ONCE_STATIC(ossl_init_no_config
)
225 #ifdef OPENSSL_INIT_DEBUG
227 "OPENSSL_INIT: ossl_init_config: openssl_no_config_int()\n");
229 openssl_no_config_int();
234 static CRYPTO_ONCE async
= CRYPTO_ONCE_STATIC_INIT
;
235 static int async_inited
= 0;
236 DEFINE_RUN_ONCE_STATIC(ossl_init_async
)
238 #ifdef OPENSSL_INIT_DEBUG
239 fprintf(stderr
, "OPENSSL_INIT: ossl_init_async: async_init()\n");
247 #ifndef OPENSSL_NO_ENGINE
248 static CRYPTO_ONCE engine_openssl
= CRYPTO_ONCE_STATIC_INIT
;
249 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_openssl
)
251 # ifdef OPENSSL_INIT_DEBUG
252 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_openssl: "
253 "engine_load_openssl_int()\n");
255 engine_load_openssl_int();
258 # ifndef OPENSSL_NO_DEVCRYPTOENG
259 static CRYPTO_ONCE engine_devcrypto
= CRYPTO_ONCE_STATIC_INIT
;
260 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto
)
262 # ifdef OPENSSL_INIT_DEBUG
263 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_devcrypto: "
264 "engine_load_devcrypto_int()\n");
266 engine_load_devcrypto_int();
271 # ifndef OPENSSL_NO_RDRAND
272 static CRYPTO_ONCE engine_rdrand
= CRYPTO_ONCE_STATIC_INIT
;
273 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_rdrand
)
275 # ifdef OPENSSL_INIT_DEBUG
276 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_rdrand: "
277 "engine_load_rdrand_int()\n");
279 engine_load_rdrand_int();
283 static CRYPTO_ONCE engine_dynamic
= CRYPTO_ONCE_STATIC_INIT
;
284 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_dynamic
)
286 # ifdef OPENSSL_INIT_DEBUG
287 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_dynamic: "
288 "engine_load_dynamic_int()\n");
290 engine_load_dynamic_int();
293 # ifndef OPENSSL_NO_STATIC_ENGINE
294 # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
295 static CRYPTO_ONCE engine_padlock
= CRYPTO_ONCE_STATIC_INIT
;
296 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock
)
298 # ifdef OPENSSL_INIT_DEBUG
299 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_padlock: "
300 "engine_load_padlock_int()\n");
302 engine_load_padlock_int();
306 # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
307 static CRYPTO_ONCE engine_capi
= CRYPTO_ONCE_STATIC_INIT
;
308 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_capi
)
310 # ifdef OPENSSL_INIT_DEBUG
311 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_capi: "
312 "engine_load_capi_int()\n");
314 engine_load_capi_int();
318 # if !defined(OPENSSL_NO_AFALGENG)
319 static CRYPTO_ONCE engine_afalg
= CRYPTO_ONCE_STATIC_INIT
;
320 DEFINE_RUN_ONCE_STATIC(ossl_init_engine_afalg
)
322 # ifdef OPENSSL_INIT_DEBUG
323 fprintf(stderr
, "OPENSSL_INIT: ossl_init_engine_afalg: "
324 "engine_load_afalg_int()\n");
326 engine_load_afalg_int();
333 #ifndef OPENSSL_NO_COMP
334 static CRYPTO_ONCE zlib
= CRYPTO_ONCE_STATIC_INIT
;
336 static int zlib_inited
= 0;
337 DEFINE_RUN_ONCE_STATIC(ossl_init_zlib
)
339 /* Do nothing - we need to know about this for the later cleanup */
345 static void ossl_init_thread_stop(struct thread_local_inits_st
*locals
)
347 /* Can't do much about this */
352 #ifdef OPENSSL_INIT_DEBUG
353 fprintf(stderr
, "OPENSSL_INIT: ossl_init_thread_stop: "
354 "ASYNC_cleanup_thread()\n");
356 ASYNC_cleanup_thread();
359 if (locals
->err_state
) {
360 #ifdef OPENSSL_INIT_DEBUG
361 fprintf(stderr
, "OPENSSL_INIT: ossl_init_thread_stop: "
362 "err_delete_thread_state()\n");
364 err_delete_thread_state();
367 OPENSSL_free(locals
);
370 void OPENSSL_thread_stop(void)
372 ossl_init_thread_stop(
373 (struct thread_local_inits_st
*)ossl_init_get_thread_local(0));
376 int ossl_init_thread_start(uint64_t opts
)
378 struct thread_local_inits_st
*locals
;
380 if (!OPENSSL_init_crypto(0, NULL
))
383 locals
= ossl_init_get_thread_local(1);
388 if (opts
& OPENSSL_INIT_THREAD_ASYNC
) {
389 #ifdef OPENSSL_INIT_DEBUG
390 fprintf(stderr
, "OPENSSL_INIT: ossl_init_thread_start: "
391 "marking thread for async\n");
396 if (opts
& OPENSSL_INIT_THREAD_ERR_STATE
) {
397 #ifdef OPENSSL_INIT_DEBUG
398 fprintf(stderr
, "OPENSSL_INIT: ossl_init_thread_start: "
399 "marking thread for err_state\n");
401 locals
->err_state
= 1;
407 void OPENSSL_cleanup(void)
409 OPENSSL_INIT_STOP
*currhandler
, *lasthandler
;
411 /* If we've not been inited then no need to deinit */
415 /* Might be explicitly called and also by atexit */
421 * Thread stop may not get automatically called by the thread library for
422 * the very last thread in some situations, so call it directly.
424 ossl_init_thread_stop(ossl_init_get_thread_local(0));
426 currhandler
= stop_handlers
;
427 while (currhandler
!= NULL
) {
428 currhandler
->handler();
429 lasthandler
= currhandler
;
430 currhandler
= currhandler
->next
;
431 OPENSSL_free(lasthandler
);
433 stop_handlers
= NULL
;
435 CRYPTO_THREAD_lock_free(init_lock
);
439 * We assume we are single-threaded for this function, i.e. no race
440 * conditions for the various "*_inited" vars below.
443 #ifndef OPENSSL_NO_COMP
445 #ifdef OPENSSL_INIT_DEBUG
446 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
447 "comp_zlib_cleanup_int()\n");
449 comp_zlib_cleanup_int();
454 # ifdef OPENSSL_INIT_DEBUG
455 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
461 if (load_crypto_strings_inited
) {
462 #ifdef OPENSSL_INIT_DEBUG
463 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
464 "err_free_strings_int()\n");
466 err_free_strings_int();
469 CRYPTO_THREAD_cleanup_local(&threadstopkey
);
471 #ifdef OPENSSL_INIT_DEBUG
472 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
473 "rand_cleanup_int()\n");
474 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
475 "conf_modules_free_int()\n");
476 #ifndef OPENSSL_NO_ENGINE
477 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
478 "engine_cleanup_int()\n");
480 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
481 "crypto_cleanup_all_ex_data_int()\n");
482 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
483 "bio_sock_cleanup_int()\n");
484 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
486 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
487 "evp_cleanup_int()\n");
488 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
489 "obj_cleanup_int()\n");
490 fprintf(stderr
, "OPENSSL_INIT: OPENSSL_cleanup: "
494 * Note that cleanup order is important:
495 * - rand_cleanup_int could call an ENGINE's RAND cleanup function so
496 * must be called before engine_cleanup_int()
497 * - ENGINEs use CRYPTO_EX_DATA and therefore, must be cleaned up
498 * before the ex data handlers are wiped in CRYPTO_cleanup_all_ex_data().
499 * - conf_modules_free_int() can end up in ENGINE code so must be called
500 * before engine_cleanup_int()
501 * - ENGINEs and additional EVP algorithms might use added OIDs names so
502 * obj_cleanup_int() must be called last
505 rand_drbg_cleanup_int();
506 conf_modules_free_int();
507 #ifndef OPENSSL_NO_ENGINE
508 engine_cleanup_int();
510 ossl_store_cleanup_int();
511 crypto_cleanup_all_ex_data_int();
517 /* Free list of global locks. */
518 while (global_locks
!= NULL
) {
519 GLOBAL_LOCK
*next
= global_locks
->next
;
524 CRYPTO_THREAD_lock_free(glock_lock
);
531 * If this function is called with a non NULL settings value then it must be
532 * called prior to any threads making calls to any OpenSSL functions,
533 * i.e. passing a non-null settings value is assumed to be single-threaded.
535 int OPENSSL_init_crypto(uint64_t opts
, const OPENSSL_INIT_SETTINGS
*settings
)
537 static int stoperrset
= 0;
542 * We only ever set this once to avoid getting into an infinite
543 * loop where the error system keeps trying to init and fails so
547 CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO
, ERR_R_INIT_FAIL
);
552 if (!base_inited
&& !RUN_ONCE(&base
, ossl_init_base
))
555 if ((opts
& OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS
)
556 && !RUN_ONCE(&load_crypto_strings
,
557 ossl_init_no_load_crypto_strings
))
560 if ((opts
& OPENSSL_INIT_LOAD_CRYPTO_STRINGS
)
561 && !RUN_ONCE(&load_crypto_strings
, ossl_init_load_crypto_strings
))
564 if ((opts
& OPENSSL_INIT_NO_ADD_ALL_CIPHERS
)
565 && !RUN_ONCE(&add_all_ciphers
, ossl_init_no_add_algs
))
568 if ((opts
& OPENSSL_INIT_ADD_ALL_CIPHERS
)
569 && !RUN_ONCE(&add_all_ciphers
, ossl_init_add_all_ciphers
))
572 if ((opts
& OPENSSL_INIT_NO_ADD_ALL_DIGESTS
)
573 && !RUN_ONCE(&add_all_digests
, ossl_init_no_add_algs
))
576 if ((opts
& OPENSSL_INIT_ADD_ALL_DIGESTS
)
577 && !RUN_ONCE(&add_all_digests
, ossl_init_add_all_digests
))
580 if ((opts
& OPENSSL_INIT_ATFORK
)
581 && !openssl_init_fork_handlers())
584 if ((opts
& OPENSSL_INIT_NO_LOAD_CONFIG
)
585 && !RUN_ONCE(&config
, ossl_init_no_config
))
588 if (opts
& OPENSSL_INIT_LOAD_CONFIG
) {
590 CRYPTO_THREAD_write_lock(init_lock
);
591 appname
= (settings
== NULL
) ? NULL
: settings
->appname
;
592 ret
= RUN_ONCE(&config
, ossl_init_config
);
593 CRYPTO_THREAD_unlock(init_lock
);
598 if ((opts
& OPENSSL_INIT_ASYNC
)
599 && !RUN_ONCE(&async
, ossl_init_async
))
602 #ifndef OPENSSL_NO_ENGINE
603 if ((opts
& OPENSSL_INIT_ENGINE_OPENSSL
)
604 && !RUN_ONCE(&engine_openssl
, ossl_init_engine_openssl
))
606 # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_DEVCRYPTOENG)
607 if ((opts
& OPENSSL_INIT_ENGINE_CRYPTODEV
)
608 && !RUN_ONCE(&engine_devcrypto
, ossl_init_engine_devcrypto
))
611 # ifndef OPENSSL_NO_RDRAND
612 if ((opts
& OPENSSL_INIT_ENGINE_RDRAND
)
613 && !RUN_ONCE(&engine_rdrand
, ossl_init_engine_rdrand
))
616 if ((opts
& OPENSSL_INIT_ENGINE_DYNAMIC
)
617 && !RUN_ONCE(&engine_dynamic
, ossl_init_engine_dynamic
))
619 # ifndef OPENSSL_NO_STATIC_ENGINE
620 # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
621 if ((opts
& OPENSSL_INIT_ENGINE_PADLOCK
)
622 && !RUN_ONCE(&engine_padlock
, ossl_init_engine_padlock
))
625 # if defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_NO_CAPIENG)
626 if ((opts
& OPENSSL_INIT_ENGINE_CAPI
)
627 && !RUN_ONCE(&engine_capi
, ossl_init_engine_capi
))
630 # if !defined(OPENSSL_NO_AFALGENG)
631 if ((opts
& OPENSSL_INIT_ENGINE_AFALG
)
632 && !RUN_ONCE(&engine_afalg
, ossl_init_engine_afalg
))
636 if (opts
& (OPENSSL_INIT_ENGINE_ALL_BUILTIN
637 | OPENSSL_INIT_ENGINE_OPENSSL
638 | OPENSSL_INIT_ENGINE_AFALG
)) {
639 ENGINE_register_all_complete();
643 #ifndef OPENSSL_NO_COMP
644 if ((opts
& OPENSSL_INIT_ZLIB
)
645 && !RUN_ONCE(&zlib
, ossl_init_zlib
))
652 int OPENSSL_atexit(void (*handler
)(void))
654 OPENSSL_INIT_STOP
*newhand
;
656 #if !defined(OPENSSL_NO_DSO) && !defined(OPENSSL_USE_NODELETE)
663 handlersym
.func
= handler
;
666 HMODULE handle
= NULL
;
670 * We don't use the DSO route for WIN32 because there is a better
673 ret
= GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
674 | GET_MODULE_HANDLE_EX_FLAG_PIN
,
675 handlersym
.sym
, &handle
);
682 * Deliberately leak a reference to the handler. This will force the
683 * library/code containing the handler to remain loaded until we run the
684 * atexit handler. If -znodelete has been used then this is
691 dso
= DSO_dsobyaddr(handlersym
.sym
, DSO_FLAG_NO_UNLOAD_ON_FREE
);
699 newhand
= OPENSSL_malloc(sizeof(*newhand
));
703 newhand
->handler
= handler
;
704 newhand
->next
= stop_handlers
;
705 stop_handlers
= newhand
;
710 #ifndef OPENSSL_SYS_UNIX
711 CRYPTO_RWLOCK
*CRYPTO_THREAD_glock_new(const char *name
)
713 return CRYPTO_THREAD_lock_new();
717 DEFINE_RUN_ONCE_STATIC(glock_init
)
719 glock_lock
= CRYPTO_THREAD_lock_new();
720 return glock_lock
!= NULL
;
724 * Create a new global lock, return NULL on error.
726 CRYPTO_RWLOCK
*CRYPTO_THREAD_glock_new(const char *name
)
728 static CRYPTO_ONCE glock_once
= CRYPTO_ONCE_STATIC_INIT
;
729 GLOBAL_LOCK
*newlock
;
731 if (glock_lock
== NULL
&& !RUN_ONCE(&glock_once
, glock_init
))
733 if ((newlock
= malloc(sizeof(*newlock
))) == NULL
)
735 if ((newlock
->lock
= CRYPTO_THREAD_lock_new()) == NULL
) {
739 newlock
->name
= name
;
740 CRYPTO_THREAD_write_lock(glock_lock
);
741 newlock
->next
= global_locks
;
742 global_locks
= newlock
;
743 CRYPTO_THREAD_unlock(glock_lock
);
744 return newlock
->lock
;
748 * Unlock all global locks.
750 static void unlock_all(void)
754 CRYPTO_THREAD_write_lock(glock_lock
);
755 for (lp
= global_locks
; lp
!= NULL
; lp
= lp
->next
)
756 CRYPTO_THREAD_unlock(lp
->lock
);
757 CRYPTO_THREAD_unlock(glock_lock
);
761 * The following three functions are for OpenSSL developers. This is
762 * where we set/reset state across fork (called via pthread_atfork when
763 * it exists, or manually by the application when it doesn't).
765 * WARNING! If you put code in either OPENSSL_fork_parent or
766 * OPENSSL_fork_child, you MUST MAKE SURE that they are async-signal-
767 * safe. See this link, for example:
768 * http://man7.org/linux/man-pages/man7/signal-safety.7.html
771 void OPENSSL_fork_prepare(void)
775 CRYPTO_THREAD_write_lock(glock_lock
);
776 for (lp
= global_locks
; lp
!= NULL
; lp
= lp
->next
)
777 CRYPTO_THREAD_write_lock(lp
->lock
);
778 CRYPTO_THREAD_unlock(glock_lock
);
781 void OPENSSL_fork_parent(void)
786 void OPENSSL_fork_child(void)