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authorMiklos Szeredi <mszeredi@redhat.com>2016-09-01 12:11:59 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2016-09-01 12:11:59 +0300
commitc11b9fdd6a612f376a5e886505f1c54c16d8c380 (patch)
treef4cb90cf9156ddca8b52114a887cbc4adaf92c0f /fs/overlayfs
parent38b256973ea90fc7c2b7e1b734fa0e8b83538d50 (diff)
downloadlinux-c11b9fdd6a612f376a5e886505f1c54c16d8c380.tar.xz
ovl: remove posix_acl_default from workdir
Clear out posix acl xattrs on workdir and also reset the mode after creation so that an inherited sgid bit is cleared. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'fs/overlayfs')
-rw-r--r--fs/overlayfs/super.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 4036132842b5..452fb7130efa 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -814,6 +814,10 @@ retry:
struct kstat stat = {
.mode = S_IFDIR | 0,
};
+ struct iattr attr = {
+ .ia_valid = ATTR_MODE,
+ .ia_mode = stat.mode,
+ };
if (work->d_inode) {
err = -EEXIST;
@@ -829,6 +833,21 @@ retry:
err = ovl_create_real(dir, work, &stat, NULL, NULL, true);
if (err)
goto out_dput;
+
+ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT);
+ if (err && err != -ENODATA)
+ goto out_dput;
+
+ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS);
+ if (err && err != -ENODATA)
+ goto out_dput;
+
+ /* Clear any inherited mode bits */
+ inode_lock(work->d_inode);
+ err = notify_change(work, &attr, NULL);
+ inode_unlock(work->d_inode);
+ if (err)
+ goto out_dput;
}
out_unlock:
inode_unlock(dir);