[PATCH v7 07/22] h8300: define remaining syscall_get_* functions

[Dmitry V. Levin]

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.

Acked-by: Paul Moore <paul@xxxxxxxxxxxxxx> # audit related parts
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Eric Paris <eparis@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Elvira Khabirova <lineprinter@xxxxxxxxxxxx>
Cc: Eugene Syromyatnikov <esyr@xxxxxxxxxx>
Cc: uclinux-h8-devel@xxxxxxxxxxxxxxxxxxxx
Cc: linux-audit@xxxxxxxxxx
Signed-off-by: Dmitry V. Levin <ldv@xxxxxxxxxxxx>
---

Notes:
    v7: added Acked-by
    v6: added missing includes
    v5: added syscall_get_error and syscall_get_return_value

 arch/h8300/include/asm/syscall.h | 19 +++++++++++++++++++
 include/uapi/linux/audit.h       |  1 +
 2 files changed, 20 insertions(+)

diff --git a/arch/h8300/include/asm/syscall.h b/arch/h8300/include/asm/syscall.h
index 924990401237..0a6565d12836 100644
--- a/arch/h8300/include/asm/syscall.h
+++ b/arch/h8300/include/asm/syscall.h
@@ -8,6 +8,8 @@
 #include <linux/linkage.h>
 #include <linux/types.h>
 #include <linux/ptrace.h>
+#include <linux/err.h>
+#include <uapi/linux/audit.h>
 
 static inline int
 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
@@ -47,6 +49,23 @@ 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 e3d0255b4fc2..c6a6e3a9ec9a 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