Subject: linux-next: build failure after merge of the security tree

From: Stephen Rothwell <[email-masked]>
Date: Wed, 8 Jul 2020 14:00:34 +1000

Hi all,

After merging the security tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

fs/anon_inodes.c: In function 'anon_inode_make_secure_inode':
fs/anon_inodes.c:70:10: error: implicit declaration of function 'security_inode_init_security_anon'; did you mean 'security_inode_init_security'? [-Werror=implicit-function-declaration]
   70 |  error = security_inode_init_security_anon(
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |          security_inode_init_security

Caused by commit

  2749d3f84a70 ("Add a new LSM-supporting anonymous inode interface")

# CONFIG_SECURITY is not set

Also, the explicit include of linux/security.h is missing ...

I have added the following patch for today.

From b2bae25c9b715e06f7e802ec7b51cfbfec046e6c Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <[email-masked]>
Date: Wed, 8 Jul 2020 13:43:01 +1000
Subject: [PATCH] fix up for "Add a new LSM-supporting anonymous inode interface"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 fs/anon_inodes.c         | 1 +
 include/linux/security.h | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index f87f221167cf..25d92c64411e 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -21,6 +21,7 @@
 #include <linux/magic.h>
 #include <linux/anon_inodes.h>
 #include <linux/pseudo_fs.h>
+#include <linux/security.h>
 
 #include <linux/uaccess.h>
 
diff --git a/include/linux/security.h b/include/linux/security.h
index 95c133a8f8bb..7c6b3dcf4721 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -735,6 +735,13 @@ static inline int security_inode_init_security(struct inode *inode,
 	return 0;
 }
 
+static inline int security_inode_init_security_anon(struct inode *inode,
+						    const struct qstr *name,
+						    const struct inode *context_inode)
+{
+	return 0;
+}
+
 static inline int security_old_inode_init_security(struct inode *inode,
 						   struct inode *dir,
 						   const struct qstr *qstr,
-- 
2.27.0

-- 
Cheers,
Stephen Rothwell