From: "Dmitry V. Levin" <ldv@altlinux.org>
To: Richard Kuo <rkuo@codeaurora.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
Elvira Khabirova <lineprinter@altlinux.org>,
Eugene Syromyatnikov <esyr@redhat.com>,
Oleg Nesterov <oleg@redhat.com>,
Andy Lutomirski <luto@kernel.org>,
linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH linux-next v9 2/7] hexagon: define syscall_get_error() and syscall_get_return_value()
Date: Mon, 8 Apr 2019 20:41:39 +0300 [thread overview]
Message-ID: <20190408174139.GC11889@altlinux.org> (raw)
In-Reply-To: <20190408174036.GA11889@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 2 syscall_get_* functions as documented in
asm-generic/syscall.h: syscall_get_error and syscall_get_return_value.
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: Eugene Syromyatnikov <esyr@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: linux-hexagon@vger.kernel.org
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
Richard, this patch is waiting for ACK since November.
Notes:
v9: unchanged
v8: moved syscall_get_arch to separate audit patchset
v7: unchanged
v6: added missing includes
v5: added syscall_get_error and syscall_get_return_value
v4: unchanged
v3: unchanged
v2: unchanged
arch/hexagon/include/asm/syscall.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h
index dab26a71f577..0f28a6a39c3a 100644
--- a/arch/hexagon/include/asm/syscall.h
+++ b/arch/hexagon/include/asm/syscall.h
@@ -22,6 +22,8 @@
#define _ASM_HEXAGON_SYSCALL_H
#include <uapi/linux/audit.h>
+#include <linux/err.h>
+#include <asm/ptrace.h>
typedef long (*syscall_fn)(unsigned long, unsigned long,
unsigned long, unsigned long,
@@ -44,6 +46,18 @@ static inline void syscall_get_arguments(struct task_struct *task,
memcpy(args, &(®s->r00)[0], 6 * 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(struct task_struct *task)
{
return AUDIT_ARCH_HEXAGON;
--
ldv
next prev parent reply other threads:[~2019-04-08 17:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 17:40 [PATCH linux-next v9 0/7] ptrace: add PTRACE_GET_SYSCALL_INFO request Dmitry V. Levin
2019-04-08 17:41 ` [PATCH linux-next v9 1/7] nds32: fix asm/syscall.h Dmitry V. Levin
2019-04-09 7:57 ` Greentime Hu
2019-04-08 17:41 ` Dmitry V. Levin [this message]
2019-04-08 17:41 ` [PATCH linux-next v9 3/7] mips: define syscall_get_error() Dmitry V. Levin
2019-04-08 17:42 ` [PATCH linux-next v9 4/7] parisc: " Dmitry V. Levin
2019-04-08 17:42 ` [PATCH linux-next v9 5/7] powerpc: " Dmitry V. Levin
2019-04-08 17:42 ` [PATCH linux-next v9 6/7] ptrace: add PTRACE_GET_SYSCALL_INFO request Dmitry V. Levin
2019-04-08 17:42 ` [PATCH linux-next v9 7/7] selftests/ptrace: add a test case for PTRACE_GET_SYSCALL_INFO Dmitry V. Levin
2019-04-08 17:51 ` shuah
2019-04-08 18:04 ` Dmitry V. Levin
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