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Date:	Sat,  7 Nov 2009 23:27:12 -0800
From:	"Eric W. Biederman" <>
To:	Greg Kroah-Hartman <>
Cc:	Kay Sievers <>, Greg KH <>,, Tejun Heo <>,
	Cornelia Huck <>,,
	Eric Dumazet <>,
	Benjamin LaHaise <>,
	Serge Hallyn <>,
	"Eric W. Biederman" <>,
	"Eric W. Biederman" <>
Subject: [PATCH 14/15] sysfs: sysfs_setattr remove unnecessary permission check.

From: Eric W. Biederman <>

inode_change_ok already clears the SGID bit when necessary
so there is no reason for sysfs_setattr to carry code to do
the same, and it is good to kill the extra copy because when
I moved the code last in certain corner cases the code will
look at the wrong gid.

Acked-by: Serge Hallyn <>
Acked-by: Tejun Heo <>
Signed-off-by: Eric W. Biederman <>
 fs/sysfs/inode.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 082a3eb..8197e1a 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -117,10 +117,6 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
 		return error;
 	iattr->ia_valid &= ~ATTR_SIZE; /* ignore size changes */
-	if (iattr->ia_valid & ATTR_MODE) {
-		if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
-			iattr->ia_mode &= ~S_ISGID;
-	}
 	error = inode_setattr(inode, iattr);
 	if (error)

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