linux-kernel - [PATCH] ipcns: fix stupid !CONFIG

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Date:	Mon, 26 Mar 2007 22:36:26 -0500
From:	"Serge E. Hallyn" <serge@...lyn.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	dev@...nvz.org, "Eric W. Biederman" <ebiederm@...ssion.com>,
	Badari Pulavarty <badari@...ibm.com>,
	Andrew Morton <akpm@...l.org>
Subject: [PATCH] ipcns: fix stupid !CONFIG_IPC error

Sorry, I broke CONFIG_IPC=n.  This is a port of the patch Andrew
used to fix it in -mm

Here is a question...  When CONFIG_IPC_NS=n and the user asks for
a new IPC namespace, we want to return -EINVAL to let them know
we couldn't oblige.  But if CONFIG_IPC=n is it ok to just return 0?

If not, then we'll need a somewhat different fix, as we can't
#include sched.h in ipc.h.

thanks,
-serge

From: Serge E. Hallyn <serue@...ibm.com>
Subject: [PATCH] ipcns: fix stupid !CONFIG_IPC error

Andrew Morton pointed out my patch to fix CLONE_NEWIPC behavior
when CONFIG_IPC_NS=n broke compilation when CONFIG_IPC=n.

Make sure copy_ipcs() is always defined.

Signed-off-by: Serge E. Hallyn <serue@...ibm.com>

---

 include/linux/ipc.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

d731d029f908b76af52d2abd9ab199fa931d2c98
diff --git a/include/linux/ipc.h b/include/linux/ipc.h
index 5c05c88..6da6772 100644
--- a/include/linux/ipc.h
+++ b/include/linux/ipc.h
@@ -92,11 +92,13 @@ extern struct ipc_namespace init_ipc_ns;

 #ifdef CONFIG_SYSVIPC
 #define INIT_IPC_NS(ns)		.ns		= &init_ipc_ns,
+extern int copy_ipcs(unsigned long flags, struct task_struct *tsk);
 #else
 #define INIT_IPC_NS(ns)
+static inline int copy_ipcs(unsigned long flags, struct task_struct *tsk)
+{ return 0; }
 #endif

-extern int copy_ipcs(unsigned long flags, struct task_struct *tsk);
 #ifdef CONFIG_IPC_NS
 extern void free_ipc_ns(struct kref *kref);
 extern int unshare_ipcs(unsigned long flags, struct ipc_namespace **ns);
-- 
1.3.2

-
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