Add a new ERR function, "ERR_unload_strings", to complement the existing

[openssl.git] / crypto / err / err.c

diff --git a/crypto/err/err.c b/crypto/err/err.c
index 0152d23b6bc740e4ba9169025f336540728a6671..81822b4aeac46eb18b033d06d69507b96f5d397d 100644 (file)
--- a/crypto/err/err.c
+++ b/crypto/err/err.c
@@ -218,6 +218,7 @@ struct st_ERR_FNS
        void (*cb_err_del)(void);
        ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
        ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
+       ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
        /* Works on the "thread_hash" error-state table */
        LHASH *(*cb_thread_get)(void);
        ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
@@ -232,6 +233,7 @@ static LHASH *int_err_get(void);
 static void int_err_del(void);
 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
+static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
 static LHASH *int_thread_get(void);
 static ERR_STATE *int_thread_get_item(const ERR_STATE *);
 static ERR_STATE *int_thread_set_item(ERR_STATE *);
@@ -244,6 +246,7 @@ static const ERR_FNS err_defaults =
        int_err_del,
        int_err_get_item,
        int_err_set_item,
+       int_err_del_item,
        int_thread_get,
        int_thread_get_item,
        int_thread_set_item,
@@ -368,6 +371,19 @@ static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
        CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
        return p;
        }
+static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
+       {
+       ERR_STRING_DATA *p;
+       LHASH *hash;
+       err_fns_check();
+       hash = ERRFN(err_get)();
+       if(!hash)
+               return NULL;
+       CRYPTO_r_lock(CRYPTO_LOCK_ERR);
+       p = (ERR_STRING_DATA *)lh_delete(hash, d);
+       CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
+       return p;
+       }
 static LHASH *int_thread_get(void)
        {
        LHASH *toret = NULL;
@@ -545,6 +561,16 @@ void ERR_load_strings(int lib, ERR_STRING_DATA *str)
                }
        }
 
+void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
+       {
+       while(str->error)
+               {
+               str->error|=ERR_PACK(lib,0,0);
+               ERRFN(err_del_item)(str);
+               str++;
+               }
+       }
+
 void ERR_free_strings(void)
        {
        err_fns_check();