removing mixer_reconfigure memmory leak, fixing configure of alsa and oss mixer (passing parameters)

src/conf.c

@@ -80,7 +80,7 @@ ConfigParam *newConfigParam(const char *value, int line)
 	return ret;
 }
 
-static void
+void
 config_param_free(gpointer data, G_GNUC_UNUSED gpointer user_data)
 {
 	ConfigParam *param = data;

src/conf.h

@@ -20,6 +20,7 @@
 #define MPD_CONF_H
 
 #include <stdbool.h>
+#include <glib.h>
 
 #define CONF_MUSIC_DIR                  "music_directory"
 #define CONF_PLAYLIST_DIR               "playlist_directory"
@@ -105,6 +106,8 @@ int getBoolBlockParam(ConfigParam *param, const char *name, int force);
 
 ConfigParam *newConfigParam(const char *value, int line);
 
+void config_param_free(gpointer data, gpointer user_data);
+
 void addBlockParam(ConfigParam * param, const char *name, const char *value, int line);
 
 #endif

src/mixer/alsa_mixer.c

@@ -36,6 +36,10 @@ static void
 alsa_mixer_finish(struct mixer_data *data)
 {
 	struct alsa_mixer *am = (struct alsa_mixer *)data;
+	if (am->device)
+		g_free(am->device);
+	if (am->control)
+		g_free(am->control);
 	g_free(am);
 }
 
@@ -45,10 +49,16 @@ alsa_mixer_configure(struct mixer_data *data, ConfigParam *param)
 	struct alsa_mixer *am = (struct alsa_mixer *)data;
 	BlockParam *bp;
 
-	if ((bp = getBlockParam(param, "mixer_device")))
-		am->device = bp->value;
-	if ((bp = getBlockParam(param, "mixer_control")))
-		am->control = bp->value;
+	if ((bp = getBlockParam(param, "mixer_device"))) {
+		if (am->device)
+			g_free(am->device);
+		am->device = g_strdup(bp->value);
+	}
+	if ((bp = getBlockParam(param, "mixer_control"))) {
+		if (am->control)
+			g_free(am->control);
+		am->control = g_strdup(bp->value);
+	}
 }
 
 static void

src/mixer/oss_mixer.c

@@ -19,8 +19,8 @@
 #define VOLUME_MIXER_OSS_DEFAULT		"/dev/mixer"
 
 struct oss_mixer {
-	const char *device;
-	const char *control;
+	char *device;
+	char *control;
 	int device_fd;
 	int volume_control;
 };
@@ -40,6 +40,10 @@ static void
 oss_mixer_finish(struct mixer_data *data)
 {
 	struct oss_mixer *om = (struct oss_mixer *) data;
+	if (om->device) 
+		g_free(om->device);
+	if (om->control) 
+		g_free(om->control);
 	g_free(om);
 }
 
@@ -50,11 +54,15 @@ oss_mixer_configure(struct mixer_data *data, ConfigParam *param)
 	BlockParam *bp;
 	bp = getBlockParam(param, "mixer_device");
 	if (bp) {
-		om->device = bp->value;
+		if (om->device) 
+			g_free(om->device);
+		om->device = g_strdup(bp->value);
 	}
 	bp = getBlockParam(param, "mixer_control");
 	if (bp) {
-		om->control = bp->value;
+		if (om->control) 
+			g_free(om->control);
+		om->control = g_strdup(bp->value);
 	}
 }
 

src/volume.c

@@ -71,6 +71,8 @@ mixer_reconfigure(char *driver)
 			g_error("Using mixer_type '%s' with not enabled %s output", driver, driver);
 		}
 	}
+	//free parameter list
+	config_param_free(newparam, NULL);
 }
 
 void volume_init(void)