Add CRYPTO_thread_glock_new

Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/4294)

crypto/bio/b_addr.c

@@ -603,7 +603,7 @@ static int addrinfo_wrap(int family, int socktype,
 DEFINE_RUN_ONCE_STATIC(do_bio_lookup_init)
 {
     OPENSSL_init_crypto(0, NULL);
-    bio_lookup_lock = CRYPTO_THREAD_lock_new();
+    bio_lookup_lock = CRYPTO_THREAD_glock_new("bio_lookup");
     return bio_lookup_lock != NULL;
 }
 

crypto/bio/bio_meth.c

@@ -15,7 +15,7 @@ static CRYPTO_ONCE bio_type_init = CRYPTO_ONCE_STATIC_INIT;
 
 DEFINE_RUN_ONCE_STATIC(do_bio_type_init)
 {
-    bio_type_lock = CRYPTO_THREAD_lock_new();
+    bio_type_lock = CRYPTO_THREAD_glock_new("bio_type");
     return bio_type_lock != NULL;
 }
 

crypto/engine/eng_lib.c

@@ -21,7 +21,7 @@ CRYPTO_ONCE engine_lock_init = CRYPTO_ONCE_STATIC_INIT;
 DEFINE_RUN_ONCE(do_engine_lock_init)
 {
     OPENSSL_init_crypto(0, NULL);
-    global_engine_lock = CRYPTO_THREAD_lock_new();
+    global_engine_lock = CRYPTO_THREAD_glock_new("global_engine");
     return global_engine_lock != NULL;
 }
 

crypto/err/err.c

@@ -267,7 +267,7 @@ static void ERR_STATE_free(ERR_STATE *s)
 DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
 {
     OPENSSL_init_crypto(0, NULL);
-    err_string_lock = CRYPTO_THREAD_lock_new();
+    err_string_lock = CRYPTO_THREAD_glock_new("err_string");
     int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
                                             err_string_data_cmp);
     return err_string_lock != NULL && int_error_hash != NULL;

crypto/ex_data.c

@@ -39,7 +39,7 @@ static CRYPTO_ONCE ex_data_init = CRYPTO_ONCE_STATIC_INIT;
 DEFINE_RUN_ONCE_STATIC(do_ex_data_init)
 {
     OPENSSL_init_crypto(0, NULL);
-    ex_data_lock = CRYPTO_THREAD_lock_new();
+    ex_data_lock = CRYPTO_THREAD_glock_new("ex_data");
     return ex_data_lock != NULL;
 }
 

crypto/init.c

@@ -27,6 +27,15 @@
 #include "internal/dso.h"
 #include "internal/store.h"
 
+
+typedef struct global_lock_st {
+    CRYPTO_RWLOCK *lock;
+    const char *name;
+    struct global_lock_st *next;
+} GLOBAL_LOCK;
+
+static GLOBAL_LOCK *global_locks;
+
 static int stopped = 0;
 
 static void ossl_init_thread_stop(struct thread_local_inits_st *locals);
@@ -65,6 +74,7 @@ struct ossl_init_stop_st {
 
 static OPENSSL_INIT_STOP *stop_handlers = NULL;
 static CRYPTO_RWLOCK *init_lock = NULL;
+static CRYPTO_RWLOCK *glock_lock = NULL;
 
 static CRYPTO_ONCE base = CRYPTO_ONCE_STATIC_INIT;
 static int base_inited = 0;
@@ -84,7 +94,8 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_base)
 #ifndef OPENSSL_SYS_UEFI
     atexit(OPENSSL_cleanup);
 #endif
-    if ((init_lock = CRYPTO_THREAD_lock_new()) == NULL)
+    if ((init_lock = CRYPTO_THREAD_lock_new()) == NULL
+            || (glock_lock = CRYPTO_THREAD_lock_new()) == NULL)
         return 0;
     OPENSSL_cpuid_setup();
 
@@ -405,6 +416,14 @@ void OPENSSL_cleanup(void)
         return;
     stopped = 1;
 
+    /* Free list of global locks. */
+    while (global_locks != NULL) {
+        GLOBAL_LOCK *next = global_locks->next;
+
+        free(global_locks);
+        global_locks = next;
+    }
+
     /*
      * Thread stop may not get automatically called by the thread library for
      * the very last thread in some situations, so call it directly.
@@ -421,6 +440,9 @@ void OPENSSL_cleanup(void)
     stop_handlers = NULL;
 
     CRYPTO_THREAD_lock_free(init_lock);
+    init_lock = NULL;
+    CRYPTO_THREAD_lock_free(glock_lock);
+    glock_lock = NULL;
 
     /*
      * We assume we are single-threaded for this function, i.e. no race
@@ -684,7 +706,47 @@ int OPENSSL_atexit(void (*handler)(void))
     return 1;
 }
 
-#ifdef OPENSSL_SYS_UNIX
+#ifndef OPENSSL_SYS_UNIX
+CRYPTO_RWLOCK *CRYPTO_THREAD_glock_new(const char *name)
+{
+    return CRYPTO_THREAD_lock_new();
+}
+#else
+
+
+/*
+ * Create a new global lock, return NULL on error.
+ */
+CRYPTO_RWLOCK *CRYPTO_THREAD_glock_new(const char *name)
+{
+    GLOBAL_LOCK *newlock;
+
+    if (name == NULL
+            || glock_lock == NULL
+            || (newlock = malloc(sizeof(*newlock))) == NULL)
+        return CRYPTO_THREAD_lock_new();
+    CRYPTO_THREAD_write_lock(glock_lock);
+    newlock->name = name;
+    newlock->lock = CRYPTO_THREAD_lock_new();
+    newlock->next = global_locks;
+    global_locks = newlock->next;
+    CRYPTO_THREAD_unlock(glock_lock);
+    return newlock->lock;
+}
+
+/*
+ * Unlock all global locks.
+ */
+static void unlock_all(void)
+{
+    GLOBAL_LOCK *lp;
+
+    CRYPTO_THREAD_write_lock(init_lock);
+    for (lp = global_locks; lp != NULL; lp = lp->next)
+        CRYPTO_THREAD_unlock(lp->lock);
+    CRYPTO_THREAD_unlock(init_lock);
+}
+
 /*
  * The following three functions are for OpenSSL developers.  This is
  * where we set/reset state across fork (called via pthread_atfork when
@@ -698,14 +760,22 @@ int OPENSSL_atexit(void (*handler)(void))
 
 void OPENSSL_fork_prepare(void)
 {
+    GLOBAL_LOCK *lp;
+
+    CRYPTO_THREAD_write_lock(init_lock);
+    for (lp = global_locks; lp != NULL; lp = lp->next)
+        CRYPTO_THREAD_write_lock(lp->lock);
+    CRYPTO_THREAD_unlock(init_lock);
 }
 
 void OPENSSL_fork_parent(void)
 {
+    unlock_all();
 }
 
 void OPENSSL_fork_child(void)
 {
+    unlock_all();
     rand_fork();
 }
 #endif

crypto/mem_dbg.c

@@ -90,8 +90,8 @@ static CRYPTO_THREAD_ID disabling_threadid;
 
 DEFINE_RUN_ONCE_STATIC(do_memdbg_init)
 {
-    malloc_lock = CRYPTO_THREAD_lock_new();
-    long_malloc_lock = CRYPTO_THREAD_lock_new();
+    malloc_lock = CRYPTO_THREAD_glock_new("malloc");
+    long_malloc_lock = CRYPTO_THREAD_glock_new("long_malloc");
     if (malloc_lock == NULL || long_malloc_lock == NULL
         || !CRYPTO_THREAD_init_local(&appinfokey, NULL)) {
         CRYPTO_THREAD_lock_free(malloc_lock);

crypto/mem_sec.c

@@ -66,7 +66,7 @@ int CRYPTO_secure_malloc_init(size_t size, int minsize)
     int ret = 0;
 
     if (!secure_mem_initialized) {
-        sec_malloc_lock = CRYPTO_THREAD_lock_new();
+        sec_malloc_lock = CRYPTO_THREAD_glock_new("sec_malloc");
         if (sec_malloc_lock == NULL)
             return 0;
         if ((ret = sh_init(size, minsize)) != 0) {

crypto/objects/o_names.c

@@ -69,7 +69,7 @@ DEFINE_RUN_ONCE_STATIC(o_names_init)
 {
     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
     names_lh = lh_OBJ_NAME_new(obj_name_hash, obj_name_cmp);
-    obj_lock = CRYPTO_THREAD_lock_new();
+    obj_lock = CRYPTO_THREAD_glock_new("obj");
     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
     return names_lh != NULL && obj_lock != NULL;
 }

crypto/rand/drbg_lib.c

@@ -337,11 +337,11 @@ void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx)
  * Creates a global DRBG with default settings.
  * Returns 1 on success, 0 on failure
  */
-static int setup_drbg(RAND_DRBG *drbg)
+static int setup_drbg(RAND_DRBG *drbg, const char *name)
 {
     int ret = 1;
 
-    drbg->lock = CRYPTO_THREAD_lock_new();
+    drbg->lock = CRYPTO_THREAD_glock_new(name);
     ret &= drbg->lock != NULL;
     drbg->size = RANDOMNESS_NEEDED;
     drbg->secure = CRYPTO_secure_malloc_initialized();
@@ -362,8 +362,8 @@ DEFINE_RUN_ONCE_STATIC(do_rand_init_drbg)
 {
     int ret = 1;
 
-    ret &= setup_drbg(&rand_drbg);
-    ret &= setup_drbg(&priv_drbg);
+    ret &= setup_drbg(&rand_drbg, "rand_drbg");
+    ret &= setup_drbg(&priv_drbg, "priv_drbg");
 
     return ret;
 }

crypto/rand/rand_lib.c

@@ -182,13 +182,13 @@ DEFINE_RUN_ONCE_STATIC(do_rand_init)
     int ret = 1;
 
 #ifndef OPENSSL_NO_ENGINE
-    rand_engine_lock = CRYPTO_THREAD_lock_new();
+    rand_engine_lock = CRYPTO_THREAD_glock_new("rand_engine");
     ret &= rand_engine_lock != NULL;
 #endif
-    rand_meth_lock = CRYPTO_THREAD_lock_new();
+    rand_meth_lock = CRYPTO_THREAD_glock_new("rand_meth");
     ret &= rand_meth_lock != NULL;
 
-    rand_bytes.lock = CRYPTO_THREAD_lock_new();
+    rand_bytes.lock = CRYPTO_THREAD_glock_new("rand_bytes");
     ret &= rand_bytes.lock != NULL;
     rand_bytes.curr = 0;
     rand_bytes.size = MAX_RANDOMNESS_HELD;

crypto/store/store_register.c

@@ -20,7 +20,7 @@ static CRYPTO_ONCE registry_init = CRYPTO_ONCE_STATIC_INIT;
 
 DEFINE_RUN_ONCE_STATIC(do_registry_init)
 {
-    registry_lock = CRYPTO_THREAD_lock_new();
+    registry_lock = CRYPTO_THREAD_glock_new("registry");
     return registry_lock != NULL;
 }
 

include/openssl/crypto.h

@@ -68,6 +68,7 @@ typedef struct {
 typedef void CRYPTO_RWLOCK;
 
 CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void);
+CRYPTO_RWLOCK *CRYPTO_THREAD_glock_new(const char *name);
 int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock);
 int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock);
 int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock);

util/libcrypto.num

@@ -4389,3 +4389,4 @@ EVP_aria_256_ccm                        4332	1_1_1	EXIST::FUNCTION:ARIA
 EVP_aria_128_gcm                        4333	1_1_1	EXIST::FUNCTION:ARIA
 EVP_aria_128_ccm                        4334	1_1_1	EXIST::FUNCTION:ARIA
 EVP_aria_192_gcm                        4335	1_1_1	EXIST::FUNCTION:ARIA
+CRYPTO_THREAD_glock_new                 4336	1_1_1	EXIST::FUNCTION: