linux-kernel - [PATCH] apparmor: clarify CRYPTO dependency

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Message-ID: <5026142.BskI2YQ2fk@wuerfel>
Date:	Wed, 21 Oct 2015 21:16:29 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	John Johansen <john.johansen@...onical.com>,
	linux-security-module@...r.kernel.org
Cc:	James Morris <james.l.morris@...cle.com>,
	"Serge E. Hallyn" <serge@...lyn.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] apparmor: clarify CRYPTO dependency

The crypto framework can be built as a loadable module, but the
apparmor hash code can only be built-in, which then causes a
link error:

security/built-in.o: In function `aa_calc_profile_hash':
integrity_audit.c:(.text+0x21610): undefined reference to `crypto_shash_update'
security/built-in.o: In function `init_profile_hash':
integrity_audit.c:(.init.text+0xb4c): undefined reference to `crypto_alloc_shash'

This changes Apparmor to use 'select CRYPTO' like a lot of other
subsystems do.

Signed-off-by: Arnd Bergmann <arnd@...db.de>

diff --git a/security/apparmor/Kconfig b/security/apparmor/Kconfig
index d49c53960b60..232469baa94f 100644
--- a/security/apparmor/Kconfig
+++ b/security/apparmor/Kconfig
@@ -33,7 +33,7 @@ config SECURITY_APPARMOR_BOOTPARAM_VALUE
 config SECURITY_APPARMOR_HASH
 	bool "SHA1 hash of loaded profiles"
 	depends on SECURITY_APPARMOR
-	depends on CRYPTO
+	select CRYPTO
 	select CRYPTO_SHA1
 	default y
 

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