lock the set_message_types() method for imvs

diff --git a/src/libcharon/plugins/tnc_imv/tnc_imv.c b/src/libcharon/plugins/tnc_imv/tnc_imv.c
index f6459ad..fe628ee 100644 (file)
--- a/src/libcharon/plugins/tnc_imv/tnc_imv.c
+++ b/src/libcharon/plugins/tnc_imv/tnc_imv.c
@@ -19,6 +19,7 @@
 
 #include <debug.h>
 #include <library.h>
+#include <threading/mutex.h>
 
 typedef struct private_tnc_imv_t private_tnc_imv_t;
 
@@ -61,6 +62,11 @@ struct private_tnc_imv_t {
         * Number of supported message types
         */
        TNC_UInt32 type_count;
+
+       /**
+        * mutex to lock the imv_t object
+        */
+       mutex_t *mutex;
 };
 
 METHOD(imv_t, set_id, void,
@@ -90,6 +96,9 @@ METHOD(imv_t, set_message_types, void,
        int len = sizeof(buf);
        int written;
 
+       /* lock the imv_t instance */
+       this->mutex->lock(this->mutex);
+
        /* Free an existing MessageType list */
        free(this->supported_types);
        this->supported_types = NULL;
@@ -118,6 +127,9 @@ METHOD(imv_t, set_message_types, void,
        *pos = '\0';
        DBG2(DBG_TNC, "IMV %u supports %u message types:%s",
                                  this->id, type_count, buf);
+
+       /* lock the imv_t instance */
+       this->mutex->unlock(this->mutex);
 }
 
 METHOD(imv_t, type_supported, bool,
@@ -151,6 +163,7 @@ METHOD(imv_t, destroy, void,
        private_tnc_imv_t *this)
 {
        dlclose(this->handle);
+       this->mutex->destroy(this->mutex);
        free(this->supported_types);
        free(this->name);
        free(this->path);
@@ -175,6 +188,7 @@ imv_t* tnc_imv_create(char *name, char *path)
                },
                .name = name,
                .path = path,
+               .mutex = mutex_create(MUTEX_TYPE_DEFAULT),
        );
 
        this->handle = dlopen(path, RTLD_LAZY);