From 2561f409d2122c0079a1b53a274f4f6f92d4e60d Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Tue, 22 Aug 2006 20:06:03 -0400
Subject: [PATCH] --- yaml --- r: 33550 b: refs/heads/master c:
 a343bb7750e6a098909c34f5c5dfddbc4fa40053 h: refs/heads/master v: v3

---
 [refs]           | 2 +-
 trunk/fs/namei.c | 9 ++++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index f3241a64c7b3..728175b21e0a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 16b4289c7460ba9c04af40c574949dcca9029658
+refs/heads/master: a343bb7750e6a098909c34f5c5dfddbc4fa40053
diff --git a/trunk/fs/namei.c b/trunk/fs/namei.c
index 863166441bf3..432d6bc6fab0 100644
--- a/trunk/fs/namei.c
+++ b/trunk/fs/namei.c
@@ -227,10 +227,10 @@ int generic_permission(struct inode *inode, int mask,
 
 int permission(struct inode *inode, int mask, struct nameidata *nd)
 {
+	umode_t mode = inode->i_mode;
 	int retval, submask;
 
 	if (mask & MAY_WRITE) {
-		umode_t mode = inode->i_mode;
 
 		/*
 		 * Nobody gets write access to a read-only fs.
@@ -247,6 +247,13 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
 	}
 
 
+	/*
+	 * MAY_EXEC on regular files requires special handling: We override
+	 * filesystem execute permissions if the mode bits aren't set.
+	 */
+	if ((mask & MAY_EXEC) && S_ISREG(mode) && !(mode & S_IXUGO))
+		return -EACCES;
+
 	/* Ordinary permission routines do not understand MAY_APPEND. */
 	submask = mask & ~MAY_APPEND;
 	if (inode->i_op && inode->i_op->permission)