ceph: set sec_context xattr on symlink creation

commit b748fc7a8763a5b3f8149f12c45711cd73ef8176 upstream.

Symlink inodes should have the security context set in their xattrs on
creation. We already set the context on creation, but we don't attach
the pagelist. The effect is that symlink inodes don't get an SELinux
context set on them at creation, so they end up unlabeled instead of
inheriting the proper context. Make it do so.

Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 2e4764fd187271856086274fe6234389e04172a2..3367a8194f24b9fc0ff0f50b33507ff09512998d 100644 (file)
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -920,6 +920,10 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
        req->r_num_caps = 2;
        req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL;
        req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
+       if (as_ctx.pagelist) {
+               req->r_pagelist = as_ctx.pagelist;
+               as_ctx.pagelist = NULL;
+       }
        err = ceph_mdsc_do_request(mdsc, dir, req);
        if (!err && !req->r_reply_info.head->is_dentry)
                err = ceph_handle_notrace_create(dir, dentry);