linux-next: build failure after merge of the integrity tree

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Hi all,

After merging the integrity tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from <command-line>:
include/linux/module_signature.h:32:2: error: unknown type name 'u8'
  u8 algo;  /* Public-key crypto algorithm [0] */
  ^~
include/linux/module_signature.h:33:2: error: unknown type name 'u8'
  u8 hash;  /* Digest algorithm [0] */
  ^~
include/linux/module_signature.h:34:2: error: unknown type name 'u8'
  u8 id_type; /* Key identifier type [PKEY_ID_PKCS7] */
  ^~
include/linux/module_signature.h:35:2: error: unknown type name 'u8'
  u8 signer_len; /* Length of signer's name [0] */
  ^~
include/linux/module_signature.h:36:2: error: unknown type name 'u8'
  u8 key_id_len; /* Length of key identifier [0] */
  ^~
include/linux/module_signature.h:37:2: error: unknown type name 'u8'
  u8 __pad[3];
  ^~
include/linux/module_signature.h:38:2: error: unknown type name '__be32'
  __be32 sig_len; /* Length of signature data */
  ^~~~~~
include/linux/module_signature.h:41:54: error: unknown type name 'size_t'
 int mod_check_sig(const struct module_signature *ms, size_t file_len,
                                                      ^~~~~~
include/linux/module_signature.h:41:54: note: 'size_t' is defined in header '<stddef.h>'; did you forget to '#include <stddef.h>'?
include/linux/module_signature.h:1:1:
+#include <stddef.h>
 /* SPDX-License-Identifier: GPL-2.0+ */
include/linux/module_signature.h:41:54:
 int mod_check_sig(const struct module_signature *ms, size_t file_len,
                                                      ^~~~~~

Caused by commit

  c8424e776b09 ("MODSIGN: Export module signature definitions")

We now have build time checks to make sure that include files are self
contained.

I have added the following fix patch for today.

From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Tue, 6 Aug 2019 12:09:36 +1000
Subject: [PATCH] MODSIGN: make new include file self contained

Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
 include/linux/module_signature.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/module_signature.h b/include/linux/module_signature.h
index 523617fc5b6a..7eb4b00381ac 100644
--- a/include/linux/module_signature.h
+++ b/include/linux/module_signature.h
@@ -9,6 +9,8 @@
 #ifndef _LINUX_MODULE_SIGNATURE_H
 #define _LINUX_MODULE_SIGNATURE_H
 
+#include <linux/types.h>
+
 /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
 #define MODULE_SIG_STRING "~Module signature appended~\n"
 
-- 
2.20.1

-- 
Cheers,
Stephen Rothwell

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