[XFS] Add an XFS callout to security_inode_init_security; SE Linux is not

functional with XFS without this change.

SGI-PV: 946762
SGI-Modid: xfs-linux-melb:xfs-kern:24766a

Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 8fd274fc26d5..6bf770cfb006 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -53,6 +53,7 @@
 
 #include <linux/xattr.h>
 #include <linux/namei.h>
+#include <linux/security.h>
 
 #define IS_NOATIME(inode) ((inode->i_sb->s_flags & MS_NOATIME) ||       \
         (S_ISDIR(inode->i_mode) && inode->i_sb->s_flags & MS_NODIRATIME))
@@ -203,6 +204,39 @@ validate_fields(
 }
 
 /*
+ * Hook in SELinux.  This is not quite correct yet, what we really need
+ * here (as we do for default ACLs) is a mechanism by which creation of
+ * these attrs can be journalled at inode creation time (along with the
+ * inode, of course, such that log replay can't cause these to be lost).
+ */
+STATIC int
+linvfs_init_security(
+        struct vnode    *vp,
+        struct inode    *dir)
+{
+        struct inode    *ip = LINVFS_GET_IP(vp);
+        size_t          length;
+        void            *value;
+        char            *name;
+        int             error;
+
+        error = security_inode_init_security(ip, dir, &name, &value, &length);
+        if (error) {
+                if (error == -EOPNOTSUPP)
+                        return 0;
+                return -error;
+        }
+
+        VOP_ATTR_SET(vp, name, value, length, ATTR_SECURE, NULL, error);
+        if (!error)
+                VMODIFY(vp);
+
+        kfree(name);
+        kfree(value);
+        return error;
+}
+
+/*
  * Determine whether a process has a valid fs_struct (kernel daemons
  * like knfsd don't have an fs_struct).
  *
@@ -267,6 +301,9 @@ linvfs_mknod(
                 break;
         }
 
+        if (!error)
+                error = linvfs_init_security(vp, dir);
+
         if (default_acl) {
                 if (!error) {
                         error = _ACL_INHERIT(vp, &va, default_acl);