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From: "Dmitry V. Levin" <ldv@altlinux.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: 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, linux-kernel@vger.kernel.org
Subject: [PATCH v11 4/7] parisc: define syscall_get_error()
Date: Fri, 10 May 2019 18:28:13 +0300
Message-ID: <20190510152812.GD28558@altlinux.org> (raw)
In-Reply-To: <20190510152640.GA28529@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:
    v11: unchanged
    v10: unchanged
    v9: unchanged
    v8: added Acked-by from https://lore.kernel.org/lkml/1abba4b1-82ef-c23c-c59e-5562dcb5b1bb@gmx.de/
    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

      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-10 15:26 [PATCH v11 0/7] ptrace: add PTRACE_GET_SYSCALL_INFO request Dmitry V. Levin
2019-05-10 15:28 ` Dmitry V. Levin [this message]

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