linux-kernel - [PATCH 2/8] Simplify exec_permission

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Date:	Mon, 7 Sep 2009 14:02:47 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Linux Filesystem Mailing List <linux-fsdevel@...r.kernel.org>
cc:	Eric Paris <eparis@...hat.com>, Mimi Zohar <zohar@...ibm.com>,
	James Morris <jmorris@...ei.org>
Subject: [PATCH 2/8] Simplify exec_permission_lite() logic


From: Linus Torvalds <torvalds@...ux-foundation.org>
Date: Fri, 28 Aug 2009 10:50:37 -0700

Instead of returning EAGAIN and having the caller do something
special for that case,  just do the special case directly.

Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
---
 fs/namei.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 164aa15..bf8aa95 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -435,7 +435,7 @@ static int exec_permission_lite(struct inode *inode)
 	umode_t	mode = inode->i_mode;
 
 	if (inode->i_op->permission)
-		return -EAGAIN;
+		return inode_permission(inode, MAY_EXEC);
 
 	if (current_fsuid() == inode->i_uid)
 		mode >>= 6;
@@ -853,9 +853,6 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
 
 		nd->flags |= LOOKUP_CONTINUE;
 		err = exec_permission_lite(inode);
-		if (err == -EAGAIN)
-			err = inode_permission(nd->path.dentry->d_inode,
-					       MAY_EXEC);
  		if (err)
 			break;
 
-- 
1.6.4.1.209.g74b8

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