From: "Dmitry V. Levin" <ldv@altlinux.org>
To: linux-kernel@vger.kernel.org
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
Helge Deller <deller@gmx.de>,
"James E.J. Bottomley" <jejb@parisc-linux.org>,
Elvira Khabirova <lineprinter@altlinux.org>,
Eugene Syromyatnikov <esyr@redhat.com>,
Oleg Nesterov <oleg@redhat.com>,
Andy Lutomirski <luto@kernel.org>,
linux-parisc@vger.kernel.org
Subject: [PATCH linux-next v9 4/7] parisc: define syscall_get_error()
Date: Mon, 8 Apr 2019 20:42:05 +0300 [thread overview]
Message-ID: <20190408174205.GE11889@altlinux.org> (raw)
In-Reply-To: <20190408174036.GA11889@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.
Acked-by: Helge Deller <deller@gmx.de> # parisc
Cc: James E.J. Bottomley <jejb@parisc-linux.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-parisc@vger.kernel.org
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
Notes:
v9: unchanged
v8: added Acked-by
v7: unchanged
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 80757e43cf2c..00b127a5e09b 100644
--- a/arch/parisc/include/asm/syscall.h
+++ b/arch/parisc/include/asm/syscall.h
@@ -29,6 +29,13 @@ static inline void syscall_get_arguments(struct task_struct *tsk,
args[0] = regs->gr[26];
}
+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
prev parent reply other threads:[~2019-04-08 17:42 UTC|newest]
Thread overview: 2+ 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 17:42 ` Dmitry V. Levin [this message]
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