PROV: Add the beginning of a DER writing library

[openssl.git] / crypto / threads_pthread.c

diff --git a/crypto/threads_pthread.c b/crypto/threads_pthread.c
index 8d30e1c69f3587ca6b200f3f2823eef01ede6f64..762da60a87093c772c487c98e8e0df23c8eef749 100644 (file)
--- a/crypto/threads_pthread.c
+++ b/crypto/threads_pthread.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2016-2018 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
@@ -10,8 +10,17 @@
 #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
@@ -162,30 +171,17 @@ int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
         *ret = __atomic_add_fetch(val, amount, __ATOMIC_ACQ_REL);
         return 1;
     }
-# endif
-    if (!CRYPTO_THREAD_write_lock(lock))
-        return 0;
-
-    *val += amount;
-    *ret  = *val;
-
-    if (!CRYPTO_THREAD_unlock(lock))
-        return 0;
-
-    return 1;
-}
-
-int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock)
-{
-# if defined(__GNUC__) && defined(__ATOMIC_ACQUIRE)
-    if (__atomic_is_lock_free(sizeof(*val), val)) {
-        __atomic_load(val, ret, __ATOMIC_ACQUIRE);
+# 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_read_lock(lock))
+    if (!CRYPTO_THREAD_write_lock(lock))
         return 0;
 
+    *val += amount;
     *ret  = *val;
 
     if (!CRYPTO_THREAD_unlock(lock))
@@ -194,26 +190,10 @@ int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock)
     return 1;
 }
 
-int CRYPTO_atomic_write(int *val, int n, CRYPTO_RWLOCK *lock)
-{
-# if defined(__GNUC__) && defined(__ATOMIC_RELEASE)
-    if (__atomic_is_lock_free(sizeof(*val), val)) {
-        __atomic_store(val, &n, __ATOMIC_RELEASE);
-        return 1;
-    }
-# endif
-    if (!CRYPTO_THREAD_write_lock(lock))
-        return 0;
-
-    *val = n;
-
-    if (!CRYPTO_THREAD_unlock(lock))
-        return 0;
-
-    return 1;
-}
+# ifndef FIPS_MODE
+/* TODO(3.0): No fork protection in FIPS module yet! */
 
-# ifdef OPENSSL_SYS_UNIX
+#  ifdef OPENSSL_SYS_UNIX
 static pthread_once_t fork_once_control = PTHREAD_ONCE_INIT;
 
 static void fork_once_func(void)
@@ -221,14 +201,20 @@ static void fork_once_func(void)
     pthread_atfork(OPENSSL_fork_prepare,
                    OPENSSL_fork_parent, OPENSSL_fork_child);
 }
-# endif
+#  endif
 
 int openssl_init_fork_handlers(void)
 {
-# ifdef OPENSSL_SYS_UNIX
+#  ifdef OPENSSL_SYS_UNIX
     if (pthread_once(&fork_once_control, fork_once_func) == 0)
         return 1;
-# endif
+#  endif
     return 0;
 }
+# endif /* FIPS_MODE */
+
+int openssl_get_fork_id(void)
+{
+    return getpid();
+}
 #endif