From: "Dmitry V. Levin" <ldv@altlinux.org>
To: "James E.J. Bottomley" <jejb@parisc-linux.org>,
Helge Deller <deller@gmx.de>, Oleg Nesterov <oleg@redhat.com>,
Andy Lutomirski <luto@kernel.org>
Cc: Elvira Khabirova <lineprinter@altlinux.org>,
Eugene Syromyatnikov <esyr@redhat.com>,
linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v6 17/27] parisc: define syscall_get_error()
Date: Thu, 13 Dec 2018 20:23:07 +0300 [thread overview]
Message-ID: <20181213172307.GQ6024@altlinux.org> (raw)
In-Reply-To: 20181213171833.GA5240@altlinux.org
syscall_get_error() is required to be implemented on all
architectures in addition to already implemented syscall_get_nr(),
syscall_get_arguments(), syscall_get_return_value(), and
syscall_get_arch() functions in order to extend the generic
ptrace API with PTRACE_GET_SYSCALL_INFO request.
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
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-parisc@vger.kernel.org
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
Notes:
v6: unchanged
v5: initial revision
arch/parisc/include/asm/syscall.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/parisc/include/asm/syscall.h b/arch/parisc/include/asm/syscall.h
index 8bff1a58c97f..477511ff7546 100644
--- a/arch/parisc/include/asm/syscall.h
+++ b/arch/parisc/include/asm/syscall.h
@@ -43,6 +43,13 @@ static inline void syscall_get_arguments(struct task_struct *tsk,
}
}
+static inline long syscall_get_error(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ unsigned long error = regs->gr[28];
+ return IS_ERR_VALUE(error) ? error : 0;
+}
+
static inline long syscall_get_return_value(struct task_struct *task,
struct pt_regs *regs)
{
--
ldv
next parent reply other threads:[~2018-12-13 17:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20181213171833.GA5240@altlinux.org>
2018-12-13 17:23 ` Dmitry V. Levin [this message]
2018-12-13 17:24 ` [PATCH v6 24/27] syscall_get_arch: add "struct task_struct *" argument Dmitry V. Levin
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