Fix: wrapper random documentation

[lttng-modules.git] / wrapper / random.c

diff --git a/wrapper/random.c b/wrapper/random.c
index 5151f9a9e822795ea1984ca1a051baf3d1b8c947..7b91fc7f3e146a4b8046b7996ecb4855812537a5 100644 (file)
--- a/wrapper/random.c
+++ b/wrapper/random.c
@@ -1,27 +1,14 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
  * wrapper/random.c
  *
- * wrapper around bootid read. Using KALLSYMS to get its address when
- * available, else we need to have a kernel that exports this function to GPL
- * modules.
+ * wrapper around bootid read. Read the boot id through the /proc filesystem.
  *
  * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <linux/errno.h>
+
 /* boot_id depends on sysctl */
 #if defined(CONFIG_SYSCTL)
 
@@ -58,7 +45,7 @@ int wrapper_get_bootid(char *bootid)
                ret = -EINVAL;
                goto end;
        }
-       
+
        bootid[BOOT_ID_LEN - 1] = '\0';
        ret = 0;
 end:
@@ -66,6 +53,7 @@ end:
        filp_close(file, current->files);
        return ret;
 }
+EXPORT_SYMBOL_GPL(wrapper_get_bootid);
 
 #else
 
@@ -73,5 +61,6 @@ int wrapper_get_bootid(char *bootid)
 {
        return -ENOSYS;
 }
+EXPORT_SYMBOL_GPL(wrapper_get_bootid);
 
 #endif