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From: "Dmitry V. Levin" <ldv@altlinux.org>
To: Richard Kuo <rkuo@codeaurora.org>,
	Paul Moore <paul@paul-moore.com>, Eric Paris <eparis@redhat.com>,
	Oleg Nesterov <oleg@redhat.com>,
	Andy Lutomirski <luto@kernel.org>
Cc: Elvira Khabirova <lineprinter@altlinux.org>,
	Eugene Syromyatnikov <esyr@redhat.com>,
	linux-hexagon@vger.kernel.org, linux-audit@redhat.com,
	linux-kernel@vger.kernel.org
Subject: [PATCH v6 11/27] hexagon: define remaining syscall_get_* functions
Date: Thu, 13 Dec 2018 20:22:24 +0300	[thread overview]
Message-ID: <20181213172224.GK6024@altlinux.org> (raw)
In-Reply-To: 20181213171833.GA5240@altlinux.org

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: Richard Kuo <rkuo@codeaurora.org>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: Eugene Syromyatnikov <esyr@redhat.com>
Cc: linux-hexagon@vger.kernel.org
Cc: linux-audit@redhat.com
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---

Notes:
    v6: added missing includes
    v5: added syscall_get_error and syscall_get_return_value

 arch/hexagon/include/asm/syscall.h | 22 ++++++++++++++++++++++
 include/uapi/linux/audit.h         |  1 +
 2 files changed, 23 insertions(+)

diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h
index 4af9c7b6f13a..c3290c0bc458 100644
--- a/arch/hexagon/include/asm/syscall.h
+++ b/arch/hexagon/include/asm/syscall.h
@@ -21,6 +21,10 @@
 #ifndef _ASM_HEXAGON_SYSCALL_H
 #define _ASM_HEXAGON_SYSCALL_H
 
+#include <linux/err.h>
+#include <asm/ptrace.h>
+#include <uapi/linux/audit.h>
+
 typedef long (*syscall_fn)(unsigned long, unsigned long,
 	unsigned long, unsigned long,
 	unsigned long, unsigned long);
@@ -43,4 +47,22 @@ static inline void syscall_get_arguments(struct task_struct *task,
 	BUG_ON(i + n > 6);
 	memcpy(args, &(&regs->r00)[i], n * sizeof(args[0]));
 }
+
+static inline long syscall_get_error(struct task_struct *task,
+				     struct pt_regs *regs)
+{
+	return IS_ERR_VALUE(regs->r00) ? regs->r00 : 0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+					    struct pt_regs *regs)
+{
+	return regs->r00;
+}
+
+static inline int syscall_get_arch(void)
+{
+	return AUDIT_ARCH_HEXAGON;
+}
+
 #endif
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 672c6d9d7577..b8e848736031 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -387,6 +387,7 @@ enum {
 #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_HEXAGON	(EM_HEXAGON)
 #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

  parent reply	other threads:[~2018-12-13 17:22 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20181213171833.GA5240@altlinux.org>
2018-12-13 17:21 ` [PATCH v6 01/27] asm-generic/syscall.h: prepare for inclusion by other files Dmitry V. Levin
2018-12-13 17:21 ` [PATCH v6 02/27] asm-generic/syscall.h: turn syscall_[gs]et_arguments into wrappers Dmitry V. Levin
2018-12-13 17:21 ` [PATCH v6 03/27] alpha: define remaining syscall_get_* functions Dmitry V. Levin
2018-12-13 17:21 ` [PATCH v6 04/27] Move EM_ARCOMPACT and EM_ARCV2 to uapi/linux/elf-em.h Dmitry V. Levin
2018-12-21  1:19   ` Dmitry V. Levin
2018-12-13 17:21 ` [PATCH v6 05/27] arc: define syscall_get_arch() Dmitry V. Levin
2018-12-21  1:21   ` Dmitry V. Levin
2018-12-13 17:21 ` [PATCH v6 06/27] c6x: " Dmitry V. Levin
2018-12-13 17:22 ` [PATCH v6 07/27] elf-em.h: add EM_CSKY Dmitry V. Levin
2018-12-14  4:43   ` Guo Ren
2018-12-21  2:35     ` Dmitry V. Levin
2018-12-21 14:49       ` Guo Ren
2018-12-13 17:22 ` [PATCH v6 08/27] csky: define syscall_get_arch() Dmitry V. Levin
2018-12-14  4:44   ` Guo Ren
2018-12-21  2:36     ` Dmitry V. Levin
2018-12-21 14:48       ` Guo Ren
2018-12-13 17:22 ` [PATCH v6 09/27] h8300: define remaining syscall_get_* functions Dmitry V. Levin
2018-12-13 17:22 ` [PATCH v6 10/27] Move EM_HEXAGON to uapi/linux/elf-em.h Dmitry V. Levin
2018-12-13 17:22 ` Dmitry V. Levin [this message]
2018-12-13 17:22 ` [PATCH v6 12/27] Move EM_NDS32 " Dmitry V. Levin
2018-12-13 17:22 ` [PATCH v6 13/27] nds32: define syscall_get_arch() Dmitry V. Levin
2018-12-13 17:22 ` [PATCH v6 14/27] nios2: " Dmitry V. Levin
2018-12-13 17:22 ` [PATCH v6 15/27] m68k: add asm/syscall.h Dmitry V. Levin
2018-12-13 17:23 ` [PATCH v6 16/27] mips: define syscall_get_error() Dmitry V. Levin
2018-12-13 19:00   ` Paul Burton
2018-12-21  1:31     ` Dmitry V. Levin
2018-12-13 17:23 ` [PATCH v6 17/27] parisc: " Dmitry V. Levin
2018-12-13 17:23 ` [PATCH v6 18/27] powerpc: " Dmitry V. Levin
2018-12-18 12:36   ` powerpc syscall_set_return_value() is confused (was Re: [PATCH v6 18/27] powerpc: define syscall_get_error()) Michael Ellerman
2018-12-13 17:23 ` [PATCH v6 19/27] riscv: define syscall_get_arch() Dmitry V. Levin
2018-12-13 17:23 ` [PATCH v6 20/27] Move EM_XTENSA to uapi/linux/elf-em.h Dmitry V. Levin
2018-12-13 17:23 ` [PATCH v6 21/27] xtensa: define syscall_get_* functions Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 22/27] Move EM_UNICORE to uapi/linux/elf-em.h Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 23/27] unicore32: add asm/syscall.h Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 24/27] syscall_get_arch: add "struct task_struct *" argument Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 25/27] powerpc/ptrace: replace ptrace_report_syscall() with a tracehook call Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 26/27] ptrace: add PTRACE_GET_SYSCALL_INFO request Dmitry V. Levin
2018-12-13 17:24 ` [PATCH v6 27/27] selftests/ptrace: add a test case for PTRACE_GET_SYSCALL_INFO Dmitry V. Levin

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