Convert CRYPTO_LOCK_UI to new multi-threading API

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>

crypto/ui/ui_lib.c

@@ -79,6 +79,14 @@ UI *UI_new_method(const UI_METHOD *method)
         UIerr(UI_F_UI_NEW_METHOD, ERR_R_MALLOC_FAILURE);
         return NULL;
     }
+
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
+        UIerr(UI_F_UI_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(ret);
+        return NULL;
+    }
+
     if (method == NULL)
         ret->meth = UI_get_default_method();
     else
@@ -111,6 +119,7 @@ void UI_free(UI *ui)
         return;
     sk_UI_STRING_pop_free(ui->strings, free_string);
     CRYPTO_free_ex_data(CRYPTO_EX_INDEX_UI, ui, &ui->ex_data);
+    CRYPTO_THREAD_lock_free(ui->lock);
     OPENSSL_free(ui);
 }
 

crypto/ui/ui_locl.h

@@ -139,6 +139,8 @@ struct ui_st {
 # define UI_FLAG_REDOABLE        0x0001
 # define UI_FLAG_PRINT_ERRORS    0x0100
     int flags;
+
+    CRYPTO_RWLOCK *lock;
 };
 
 #endif

crypto/ui/ui_openssl.c

@@ -462,7 +462,7 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
 /* Internal functions to open, handle and close a channel to the console.  */
 static int open_console(UI *ui)
 {
-    CRYPTO_w_lock(CRYPTO_LOCK_UI);
+    CRYPTO_THREAD_write_lock(ui->lock);
     is_a_tty = 1;
 
 #if defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)
@@ -569,7 +569,7 @@ static int close_console(UI *ui)
 #ifdef OPENSSL_SYS_VMS
     status = sys$dassgn(channel);
 #endif
-    CRYPTO_w_unlock(CRYPTO_LOCK_UI);
+    CRYPTO_THREAD_unlock(ui->lock);
 
     return 1;
 }

include/openssl/crypto.h

@@ -185,7 +185,6 @@ extern "C" {
 # define CRYPTO_LOCK_MALLOC2             27
 # define CRYPTO_LOCK_DYNLOCK             29
 # define CRYPTO_LOCK_ENGINE              30
-# define CRYPTO_LOCK_UI                  31
 # define CRYPTO_LOCK_ECDSA               32
 # define CRYPTO_LOCK_ECDH                34
 # define CRYPTO_LOCK_BN                  35