linux-kernel - [PATCH] Don't export vt_kmsg

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Date:	Wed, 16 Dec 2009 21:26:56 +0100
From:	Bernhard Walle <bernhard@...lle.de>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	Bernhard Walle <bernhard@...lle.de>
Subject: [PATCH] Don't export vt_kmsg_redirect() to userspace

Fix following warning in linux-next by guarding the function definition (both
the "extern" and the inline) with #ifdef __KERNEL__.

------------------------- 8< ----------------------------------------------------
usr/include/linux/vt.h:89: userspace cannot call function or variable defined in
the kernel

Introduced by commit 5ada918b82399eef3afd6a71e3637697d6bd719f ("vt:
introduce and use vt_kmsg_redirect() function").
------------------------- >8 ----------------------------------------------------


Signed-off-by: Bernhard Walle <bernhard@...lle.de>
---
 include/linux/vt.h |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/include/linux/vt.h b/include/linux/vt.h
index 3fb9944..d5dd0bc 100644
--- a/include/linux/vt.h
+++ b/include/linux/vt.h
@@ -84,6 +84,8 @@ struct vt_setactivate {
 
 #define VT_SETACTIVATE	0x560F	/* Activate and set the mode of a console */
 
+#ifdef __KERNEL__
+
 #ifdef CONFIG_VT_CONSOLE
 
 extern int vt_kmsg_redirect(int new);
@@ -97,6 +99,8 @@ static inline int vt_kmsg_redirect(int new)
 
 #endif
 
+#endif /* __KERNEL__ */
+
 #define vt_get_kmsg_redirect() vt_kmsg_redirect(-1)
 
 #endif /* _LINUX_VT_H */
-- 
1.6.4.2

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