ocfs2: add ocfs2_init_security in during file create

Security attributes must be set when creating a new inode.

We do this in three steps.

- First, get security xattr's name and value by security_operation

- Calculate and reserve the meta data and clusters needed by this security
  xattr before starting transaction

- Finally, we set it before add_entry

Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 55c5256ff563..188ef6ba6836 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -30,6 +30,13 @@ enum ocfs2_xattr_type {
         OCFS2_XATTR_MAX
 };
 
+struct ocfs2_security_xattr_info {
+        int enable;
+        char *name;
+        void *value;
+        size_t value_len;
+};
+
 extern struct xattr_handler ocfs2_xattr_user_handler;
 extern struct xattr_handler ocfs2_xattr_trusted_handler;
 extern struct xattr_handler ocfs2_xattr_security_handler;
@@ -43,5 +50,15 @@ int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
                            struct ocfs2_alloc_context *,
                            struct ocfs2_alloc_context *);
 int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
+int ocfs2_init_security_get(struct inode *, struct inode *,
+                            struct ocfs2_security_xattr_info *);
+int ocfs2_init_security_set(handle_t *, struct inode *,
+                            struct buffer_head *,
+                            struct ocfs2_security_xattr_info *,
+                            struct ocfs2_alloc_context *,
+                            struct ocfs2_alloc_context *);
+int ocfs2_calc_security_init(struct inode *,
+                             struct ocfs2_security_xattr_info *,
+                             int *, int *, struct ocfs2_alloc_context **);
 
 #endif /* OCFS2_XATTR_H */