revert "capabilities: clean up file capability reading"

Revert b68680e4731abbd78863063aaa0dca2a6d8cc723 to make way for the next
patch: "Add 64-bit capability support to the kernel".

We want to keep the vfs_cap_data.data[] structure, using two 'data's for
64-bit caps (and later three for 96-bit caps), whereas
b68680e4731abbd78863063aaa0dca2a6d8cc723 had gotten rid of the 'data' struct
made its members inline.

The 64-bit caps patch keeps the stack abuse fix at get_file_caps(), which was
the more important part of that patch.

[akpm@linux-foundation.org: coding-style fixes]
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: James Morris <jmorris@namei.org>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Cc: Andrew Morgan <morgan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/include/linux/capability.h b/include/linux/capability.h
index bb017edffd56..7a8d7ade28a0 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -56,8 +56,10 @@ typedef struct __user_cap_data_struct {
 
 struct vfs_cap_data {
         __u32 magic_etc;  /* Little endian */
-        __u32 permitted;    /* Little endian */
-        __u32 inheritable;  /* Little endian */
+        struct {
+                __u32 permitted;    /* Little endian */
+                __u32 inheritable;  /* Little endian */
+        } data[1];
 };
 
 #ifdef __KERNEL__