From mboxrd@z Thu Jan 1 00:00:00 1970 From: ebiederm@xmission.com (Eric W. Biederman) Subject: [PATCH] net sysctl: Add place holder functions for when sysctl support is compiled out of the kernel. Date: Mon, 23 Apr 2012 15:13:02 -0700 Message-ID: References: <20120423170701.c96e402234b1387dece11dda@canb.auug.org.au> <4F958598.6080305@xenotime.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from out03.mta.xmission.com ([166.70.13.233]:56893 "EHLO out03.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752967Ab2DWWJB (ORCPT ); Mon, 23 Apr 2012 18:09:01 -0400 In-Reply-To: <4F958598.6080305@xenotime.net> (Randy Dunlap's message of "Mon, 23 Apr 2012 09:38:48 -0700") Sender: linux-next-owner@vger.kernel.org List-ID: To: David Miller Cc: Stephen Rothwell , linux-next@vger.kernel.org, LKML , netdev@vger.kernel.org, Randy Dunlap Randy Dunlap reported: > On 04/23/2012 12:07 AM, Stephen Rothwell wrote: > >> Hi all, >> >> Changes since 20120420: > > > > ERROR: "unregister_net_sysctl_table" [net/phonet/phonet.ko] undefined! > ERROR: "register_net_sysctl" [net/phonet/phonet.ko] undefined! > > when CONFIG_SYSCTL is not enabled. Add static inline stub functions to gracefully handle the case when sysctl support is not present. Signed-off-by: Eric W. Biederman --- include/net/net_namespace.h | 15 ++++++++++++--- 1 files changed, 12 insertions(+), 3 deletions(-) diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 3ee4a3d..ac9195e 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -284,11 +284,20 @@ struct ctl_table_header; #ifdef CONFIG_SYSCTL extern int net_sysctl_init(void); -#else -static inline int net_sysctl_init(void) { return 0; } -#endif extern struct ctl_table_header *register_net_sysctl(struct net *net, const char *path, struct ctl_table *table); extern void unregister_net_sysctl_table(struct ctl_table_header *header); +#else +static inline int net_sysctl_init(void) { return 0; } +static inline struct ctl_table_header *register_net_sysctl(struct net *net, + const char *path, struct ctl_table *table) +{ + return NULL; +} +static inline void unregister_net_sysctl_table(struct ctl_table_header *header) +{ +} +#endif + #endif /* __NET_NET_NAMESPACE_H */ -- 1.7.2.5