/*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
+/* We need to use the OPENSSL_fork_*() deprecated APIs */
+#define OPENSSL_SUPPRESS_DEPRECATED
+
#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
+
+#if defined(__sun)
+# include <atomic.h>
+#endif
#if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG) && !defined(OPENSSL_SYS_WINDOWS)
+# if defined(OPENSSL_SYS_UNIX)
+# include <sys/types.h>
+# include <unistd.h>
+#endif
+
# ifdef PTHREAD_RWLOCK_INITIALIZER
# define USE_RWLOCK
# endif
CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
{
# ifdef USE_RWLOCK
- CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t));
- if (lock == NULL)
+ CRYPTO_RWLOCK *lock;
+
+ if ((lock = OPENSSL_zalloc(sizeof(pthread_rwlock_t))) == NULL) {
+ /* Don't set error, to avoid recursion blowup. */
return NULL;
+ }
if (pthread_rwlock_init(lock, NULL) != 0) {
OPENSSL_free(lock);
}
# else
pthread_mutexattr_t attr;
+ CRYPTO_RWLOCK *lock;
- CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(pthread_mutex_t));
- if (lock == NULL)
+ if ((lock = OPENSSL_zalloc(sizeof(pthread_mutex_t))) == NULL) {
+ /* Don't set error, to avoid recursion blowup. */
return NULL;
+ }
+ /*
+ * We don't use recursive mutexes, but try to catch errors if we do.
+ */
pthread_mutexattr_init(&attr);
- pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
-
+# if !defined(NDEBUG) && !defined(OPENSSL_NO_MUTEX_ERRORCHECK)
+ pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+# else
+ pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
+# endif
+
if (pthread_mutex_init(lock, &attr) != 0) {
pthread_mutexattr_destroy(&attr);
OPENSSL_free(lock);
return NULL;
}
-
+
pthread_mutexattr_destroy(&attr);
# endif
return lock;
}
-int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
+__owur int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
{
# ifdef USE_RWLOCK
if (pthread_rwlock_rdlock(lock) != 0)
return 0;
# else
- if (pthread_mutex_lock(lock) != 0)
+ if (pthread_mutex_lock(lock) != 0) {
+ assert(errno != EDEADLK && errno != EBUSY);
return 0;
+ }
# endif
return 1;
}
-int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
+__owur int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
{
# ifdef USE_RWLOCK
if (pthread_rwlock_wrlock(lock) != 0)
return 0;
# else
- if (pthread_mutex_lock(lock) != 0)
+ if (pthread_mutex_lock(lock) != 0) {
+ assert(errno != EDEADLK && errno != EBUSY);
return 0;
+ }
# endif
return 1;
if (pthread_rwlock_unlock(lock) != 0)
return 0;
# else
- if (pthread_mutex_unlock(lock) != 0)
+ if (pthread_mutex_unlock(lock) != 0) {
+ assert(errno != EPERM);
return 0;
+ }
# endif
return 1;
*ret = __atomic_add_fetch(val, amount, __ATOMIC_ACQ_REL);
return 1;
}
+# elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
+ /* This will work for all future Solaris versions. */
+ if (ret != NULL) {
+ *ret = atomic_add_int_nv((volatile unsigned int *)val, amount);
+ return 1;
+ }
# endif
- if (!CRYPTO_THREAD_write_lock(lock))
+ if (lock == NULL || !CRYPTO_THREAD_write_lock(lock))
return 0;
*val += amount;
return 1;
}
+int CRYPTO_atomic_or(uint64_t *val, uint64_t op, uint64_t *ret,
+ CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_ACQ_REL)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ *ret = __atomic_or_fetch(val, op, __ATOMIC_ACQ_REL);
+ return 1;
+ }
+# elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
+ /* This will work for all future Solaris versions. */
+ if (ret != NULL) {
+ *ret = atomic_or_64_nv(val, op);
+ return 1;
+ }
+# endif
+ if (lock == NULL || !CRYPTO_THREAD_write_lock(lock))
+ return 0;
+ *val |= op;
+ *ret = *val;
+
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}
+
+int CRYPTO_atomic_load(uint64_t *val, uint64_t *ret, CRYPTO_RWLOCK *lock)
+{
+# if defined(__GNUC__) && defined(__ATOMIC_ACQUIRE)
+ if (__atomic_is_lock_free(sizeof(*val), val)) {
+ __atomic_load(val, ret, __ATOMIC_ACQUIRE);
+ return 1;
+ }
+# elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
+ /* This will work for all future Solaris versions. */
+ if (ret != NULL) {
+ *ret = atomic_or_64_nv(val, 0);
+ return 1;
+ }
+# endif
+ if (lock == NULL || !CRYPTO_THREAD_read_lock(lock))
+ return 0;
+ *ret = *val;
+ if (!CRYPTO_THREAD_unlock(lock))
+ return 0;
+
+ return 1;
+}
+# ifndef FIPS_MODULE
+# ifdef OPENSSL_SYS_UNIX
+
+static pthread_once_t fork_once_control = PTHREAD_ONCE_INIT;
+
+static void fork_once_func(void)
+{
+# ifndef OPENSSL_NO_DEPRECATED_3_0
+ pthread_atfork(OPENSSL_fork_prepare,
+ OPENSSL_fork_parent, OPENSSL_fork_child);
+# endif
+}
+# endif
+
+int openssl_init_fork_handlers(void)
+{
+# ifdef OPENSSL_SYS_UNIX
+ if (pthread_once(&fork_once_control, fork_once_func) == 0)
+ return 1;
+# endif
+ return 0;
+}
+# endif /* FIPS_MODULE */
+
+int openssl_get_fork_id(void)
+{
+ return getpid();
+}
#endif
projects / openssl.git / blobdiff