On AArch64, audit is supported through generic lib/audit.c and compat_audit.c, and so this patch adds arch specific definitions required.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/syscall.h | 15 +++++++++++++++ include/uapi/linux/audit.h | 1 + 3 files changed, 17 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6d4dd22..3c21405 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -19,6 +19,7 @@ config ARM64 select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL select HARDIRQS_SW_RESEND + select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_TRACEHOOK select HAVE_DEBUG_BUGVERBOSE select HAVE_DEBUG_KMEMLEAK diff --git a/arch/arm64/include/asm/syscall.h b/arch/arm64/include/asm/syscall.h index 70ba9d4..6900183 100644 --- a/arch/arm64/include/asm/syscall.h +++ b/arch/arm64/include/asm/syscall.h @@ -16,7 +16,9 @@ #ifndef __ASM_SYSCALL_H #define __ASM_SYSCALL_H
+#include <linux/audit.h> #include <linux/err.h> +#include <asm/compat.h>
static inline int syscall_get_nr(struct task_struct *task, @@ -104,4 +106,17 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(®s->regs[i], args, n * sizeof(args[0])); }
+/* + * We don't care about endianness (__AUDIT_ARCH_LE bit) here because + * AArch64 has the same system calls both on little- and big- endian. + */ +static inline int syscall_get_arch(struct task_struct *task, + struct pt_regs *regs) +{ + if (is_compat_thread(task_thread_info(task))) + return AUDIT_ARCH_ARM; + + return AUDIT_ARCH_AARCH64; +} + #endif /* __ASM_SYSCALL_H */ diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index 0a73cf3..cf27cae 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -327,6 +327,7 @@ enum { /* distinguish syscall tables */ #define __AUDIT_ARCH_64BIT 0x80000000 #define __AUDIT_ARCH_LE 0x40000000 +#define AUDIT_ARCH_AARCH64 (EM_AARCH64|__AUDIT_ARCH_64BIT|__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)