linux-kernel - [PATCH v5 12/25] nios2: define syscall_get

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Message-ID: <20181210043005.GL6131@altlinux.org>
Date:   Mon, 10 Dec 2018 07:30:05 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Ley Foon Tan <lftan@...era.com>, Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Andy Lutomirski <luto@...nel.org>
Cc:     Elvira Khabirova <lineprinter@...linux.org>,
        Eugene Syromyatnikov <esyr@...hat.com>,
        nios2-dev@...ts.rocketboards.org, linux-audit@...hat.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH v5 12/25] nios2: define syscall_get_arch()

syscall_get_arch() is required to be implemented on all architectures
in addition to already implemented syscall_get_nr(),
syscall_get_arguments(), syscall_get_error(), and
syscall_get_return_value() functions in order to extend the generic
ptrace API with PTRACE_GET_SYSCALL_INFO request.

Cc: Ley Foon Tan <lftan@...era.com>
Cc: Paul Moore <paul@...l-moore.com>
Cc: Eric Paris <eparis@...hat.com>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Elvira Khabirova <lineprinter@...linux.org>
Cc: Eugene Syromyatnikov <esyr@...hat.com>
Cc: nios2-dev@...ts.rocketboards.org
Cc: linux-audit@...hat.com
Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
---

Notes:
    v5: added Cc

 arch/nios2/include/asm/syscall.h | 6 ++++++
 include/uapi/linux/audit.h       | 1 +
 2 files changed, 7 insertions(+)

diff --git a/arch/nios2/include/asm/syscall.h b/arch/nios2/include/asm/syscall.h
index 9de220854c4a..cf35e210fc4d 100644
--- a/arch/nios2/include/asm/syscall.h
+++ b/arch/nios2/include/asm/syscall.h
@@ -17,6 +17,7 @@
 #ifndef __ASM_NIOS2_SYSCALL_H__
 #define __ASM_NIOS2_SYSCALL_H__
 
+#include <uapi/linux/audit.h>
 #include <linux/err.h>
 #include <linux/sched.h>
 
@@ -135,4 +136,9 @@ static inline void syscall_set_arguments(struct task_struct *task,
 	}
 }
 
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_NIOS2;
+}
+
 #endif
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 54551adb3d5d..883c5f56be9c 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -403,6 +403,7 @@ enum {
 				 __AUDIT_ARCH_CONVENTION_MIPS64_N32)
 #define AUDIT_ARCH_NDS32	(EM_NDS32|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_NDS32BE	(EM_NDS32)
+#define AUDIT_ARCH_NIOS2	(EM_ALTERA_NIOS2|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_OPENRISC	(EM_OPENRISC)
 #define AUDIT_ARCH_PARISC	(EM_PARISC)
 #define AUDIT_ARCH_PARISC64	(EM_PARISC|__AUDIT_ARCH_64BIT)
-- 
ldv