linux-kernel - [PATCH 13/13] xtensa: define syscall_get

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Date:   Fri, 9 Nov 2018 06:17:30 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Andy Lutomirski <luto@...nel.org>, Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>
Cc:     Elvira Khabirova <lineprinter@...linux.org>,
        linux-xtensa@...ux-xtensa.org, linux-audit@...hat.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH 13/13] xtensa: define syscall_get_arch()

syscall_get_arch() is required to be implemented on all architectures
that use tracehook_report_syscall_entry() in order to extend
the generic ptrace API with PTRACE_GET_SYSCALL_INFO request.

Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
---
 arch/xtensa/include/asm/syscall.h | 7 +++++++
 include/uapi/linux/audit.h        | 1 +
 2 files changed, 8 insertions(+)

diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
index 3673ff1f1bc5..84144567095a 100644
--- a/arch/xtensa/include/asm/syscall.h
+++ b/arch/xtensa/include/asm/syscall.h
@@ -8,6 +8,13 @@
  * Copyright (C) 2001 - 2007 Tensilica Inc.
  */
 
+#include <uapi/linux/audit.h>
+
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_XTENSA;
+}
+
 struct pt_regs;
 asmlinkage long xtensa_ptrace(long, long, long, long);
 asmlinkage long xtensa_sigreturn(struct pt_regs*);
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index ad4105c602a1..28102e1430fa 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -418,6 +418,7 @@ enum {
 #define AUDIT_ARCH_TILEGX32	(EM_TILEGX|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_TILEPRO	(EM_TILEPRO|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_X86_64	(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#define AUDIT_ARCH_XTENSA	(EM_XTENSA)
 
 #define AUDIT_PERM_EXEC		1
 #define AUDIT_PERM_WRITE	2
-- 
ldv