use the new nsgroup_path_get function in freezer.c

src/lxc/cgroup.c

@@ -155,7 +155,7 @@ int lxc_unlink_nsgroup(const char *name)
 	return unlink(nsgroup);
 }
 
-static int lxc_cgroup_path_get(char **path, const char *name)
+int lxc_cgroup_path_get(char **path, const char *name)
 {
 	char cgroup[MAXPATHLEN];
 

src/lxc/cgroup.h

@@ -30,5 +30,6 @@ int lxc_get_cgroup_mount(const char *mtab, char *mnt);
 int lxc_rename_nsgroup(const char *name, struct lxc_handler *handler);
 int lxc_link_nsgroup(const char *name, const char *nsgroup);
 int lxc_unlink_nsgroup(const char *name);
+int lxc_cgroup_path_get(char **path, const char *name);
 
 #endif

src/lxc/freezer.c

@@ -39,11 +39,15 @@ lxc_log_define(lxc_freezer, lxc);
 
 static int freeze_unfreeze(const char *name, int freeze)
 {
+	char *nsgroup;
 	char freezer[MAXPATHLEN], *f;
-	int fd, ret = -1;
+	int fd, ret;
 	
-	snprintf(freezer, MAXPATHLEN, 
-		 LXCPATH "/%s/nsgroup/freezer.state", name);
+	ret = lxc_cgroup_path_get(&nsgroup, name);
+	if (ret)
+		return -1;
+
+	snprintf(freezer, MAXPATHLEN, "%s/freezer.state", nsgroup);
 
 	fd = open(freezer, O_WRONLY);
 	if (fd < 0) {
@@ -69,7 +73,7 @@ static int freeze_unfreeze(const char *name, int freeze)
 	if (ret) 
 		SYSERROR("failed to write to '%s'", freezer);
 
-	return 0;
+	return ret;
 }
 
 int lxc_freeze(const char *name)