linux-kernel - [PATCH] arm64: introduce AUDIT_ARCH

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Date:   Tue, 8 Jan 2019 21:18:56 +0000
From:   Yuri Norov <ynorov@...vell.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        Adam Borowski <kilobyte@...band.pl>,
        "Alexander Graf" <agraf@...e.de>,
        Alexey Klimov <klimov.linux@...il.com>,
        Andreas Schwab <schwab@...e.de>,
        Andrew Pinski <pinskia@...il.com>,
        Bamvor Zhangjian <bamv2005@...il.com>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        "Christoph Muellner" <christoph.muellner@...obroma-systems.com>,
        Dave Martin <Dave.Martin@....com>,
        "David S . Miller" <davem@...emloft.net>,
        "Florian Weimer" <fweimer@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        "Heiko Carstens" <heiko.carstens@...ibm.com>,
        James Hogan <james.hogan@...tec.com>,
        James Morse <james.morse@....com>,
        Joseph Myers <joseph@...esourcery.com>,
        Lin Yongting <linyongting@...wei.com>,
        Manuel Montezelo <manuel.montezelo@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "Martin Schwidefsky" <schwidefsky@...ibm.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Nathan_Lynch <Nathan_Lynch@...tor.com>,
        "Philipp Tomsich" <philipp.tomsich@...obroma-systems.com>,
        Prasun Kapoor <Prasun.Kapoor@...iumnetworks.com>,
        Ramana Radhakrishnan <ramana.gcc@...glemail.com>,
        Steve Ellcey <sellcey@...iumnetworks.com>,
        Szabolcs Nagy <szabolcs.nagy@....com>,
        "yury.norov@...il.com" <yury.norov@...il.com>
CC:     Andy Lutomirski <luto@...capital.net>
Subject: [PATCH] arm64: introduce AUDIT_ARCH_AARCH64ILP32 for ilp32

Make syscall_get_arch() distinguish arm64 and arm64/ilp32 by adding
AUDIT_ARCH_AARCH64ILP32.

Sugested-by: Andy Lutomirski <luto@...capital.net>
Signed-off-by: Yury Norov <ynorov@...vell.com>
---
 arch/arm64/include/asm/syscall.h | 3 +++
 include/uapi/linux/audit.h       | 1 +
 2 files changed, 4 insertions(+)

diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h
index 73fbe08763b0..77578d703cb1 100644
--- a/arch/arm64/include/asm/syscall.h
+++ b/arch/arm64/include/asm/syscall.h
@@ -126,6 +126,9 @@ static inline int syscall_get_arch(void)
 	if (is_a32_compat_task())
 		return AUDIT_ARCH_ARM;
 
+	if (is_ilp32_compat_task())
+		return AUDIT_ARCH_AARCH64ILP32;
+
 	return AUDIT_ARCH_AARCH64;
 }
 
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 818ae690ab79..624127147404 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -374,6 +374,7 @@ enum {
 #define __AUDIT_ARCH_LE	   0x40000000
 
 #define AUDIT_ARCH_AARCH64	(EM_AARCH64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_AARCH64ILP32	(EM_AARCH64|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ALPHA	(EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ARM		(EM_ARM|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_ARMEB	(EM_ARM)
-- 
2.17.1