Move headers under include/

[lttng-modules.git] / probes / lttng-probe-user.c

diff --git a/probes/lttng-probe-user.c b/probes/lttng-probe-user.c
index dc6cca1ba0037521e73756da831a5d6c4b4da4a9..4f5728ac3e150bd0ff68611d0acb8e297f51ef57 100644 (file)
--- a/probes/lttng-probe-user.c
+++ b/probes/lttng-probe-user.c
@@ -1,25 +1,13 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
  * lttng-probe-user.c
  *
  * Copyright (C) 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/uaccess.h>
-#include "lttng-probe-user.h"
+#include <linux/module.h>
+#include <lttng/lttng-probe-user.h>
 
 /*
  * Calculate string length. Include final null terminating character if there is
@@ -30,16 +18,19 @@
 long lttng_strlen_user_inatomic(const char *addr)
 {
        long count = 0;
-       mm_segment_t old_fs = get_fs();
+       mm_segment_t old_fs;
+
+       if (!addr)
+               return 0;
 
+       old_fs = get_fs();
        set_fs(KERNEL_DS);
        pagefault_disable();
        for (;;) {
                char v;
                unsigned long ret;
 
-               if (unlikely(!access_ok(VERIFY_READ,
-                               (__force const char __user *) addr,
+               if (unlikely(!access_ok((__force const char __user *) addr,
                                sizeof(v))))
                        break;
                ret = __copy_from_user_inatomic(&v,