linux-kernel - [TOMOYO #6 retry 02/21] Add struct vfsmount to struct task

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Message-Id: <20080109005418.469053691@nttdata.co.jp>
Date:	Wed, 09 Jan 2008 09:53:22 +0900
From:	Kentaro Takeda <takedakn@...data.co.jp>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Subject: [TOMOYO #6 retry 02/21] Add struct vfsmount to struct task_struct.

This patch allows VFS wrapper functions associate "struct vfsmount"
with "struct task_struct" so that LSM hooks can calculate
pathname of given "struct dentry".

Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
---
 include/linux/init_task.h |    1 +
 include/linux/sched.h     |    2 ++
 2 files changed, 3 insertions(+)

--- linux-2.6-mm.orig/include/linux/init_task.h
+++ linux-2.6-mm/include/linux/init_task.h
@@ -187,6 +187,7 @@ extern struct group_info init_groups;
 	.dirties = INIT_PROP_LOCAL_SINGLE(dirties),			\
 	INIT_TRACE_IRQFLAGS						\
 	INIT_LOCKDEP							\
+	.last_vfsmount  = NULL,                                         \
 }
 
 
--- linux-2.6-mm.orig/include/linux/sched.h
+++ linux-2.6-mm/include/linux/sched.h
@@ -1238,6 +1238,8 @@ struct task_struct {
 	int make_it_fail;
 #endif
 	struct prop_local_single dirties;
+	/* vfsmount info for LSM hooks. */
+	struct vfsmount *last_vfsmount;
 };
 
 /*

-- 
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