linux-kernel - [PATCH v5 07/25] h8300: define remaining syscall_get

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Message-ID: <20181210042936.GG6131@altlinux.org>
Date:   Mon, 10 Dec 2018 07:29:36 +0300
From:   "Dmitry V. Levin" <ldv@...linux.org>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        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>,
        uclinux-h8-devel@...ts.sourceforge.jp, linux-audit@...hat.com,
        linux-kernel@...r.kernel.org
Subject: [PATCH v5 07/25] h8300: define remaining syscall_get_* functions

syscall_get_* functions are required to be implemented on all
architectures in order to extend the generic ptrace API with
PTRACE_GET_SYSCALL_INFO request.

This adds remaining 3 syscall_get_* functions as documented in
asm-generic/syscall.h: syscall_get_error, syscall_get_return_value,
and syscall_get_arch.

Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
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: uclinux-h8-devel@...ts.sourceforge.jp
Cc: linux-audit@...hat.com
Signed-off-by: Dmitry V. Levin <ldv@...linux.org>
---

Notes:
    v5: added syscall_get_error and syscall_get_return_value

 arch/h8300/include/asm/syscall.h | 18 ++++++++++++++++++
 include/uapi/linux/audit.h       |  1 +
 2 files changed, 19 insertions(+)

diff --git a/arch/h8300/include/asm/syscall.h b/arch/h8300/include/asm/syscall.h
index 924990401237..5c881ffe962a 100644
--- a/arch/h8300/include/asm/syscall.h
+++ b/arch/h8300/include/asm/syscall.h
@@ -8,6 +8,7 @@
 #include <linux/linkage.h>
 #include <linux/types.h>
 #include <linux/ptrace.h>
+#include <uapi/linux/audit.h>
 
 static inline int
 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
@@ -47,6 +48,23 @@ syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
 	}
 }
 
+static inline long
+syscall_get_error(struct task_struct *task, struct pt_regs *regs)
+{
+	return IS_ERR_VALUE(regs->er0) ? regs->er0 : 0;
+}
+
+static inline long
+syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
+{
+	return regs->er0;
+}
+
+static inline int
+syscall_get_arch(void)
+{
+	return AUDIT_ARCH_H8300;
+}
 
 
 /* Misc syscall related bits */
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 55904a40d768..672c6d9d7577 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -386,6 +386,7 @@ enum {
 #define AUDIT_ARCH_CRIS		(EM_CRIS|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_CSKY		(EM_CSKY|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_FRV		(EM_FRV)
+#define AUDIT_ARCH_H8300	(EM_H8_300)
 #define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_IA64		(EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_M32R		(EM_M32R)
-- 
ldv