linux-kernel - [PATCH 28/44] Add translate

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Date:	Mon,  3 Mar 2014 00:59:11 +0100
From:	Richard Weinberger <richard@....at>
To:	linux-kernel@...r.kernel.org
Cc:	linux-arch@...r.kernel.org, viro@...iv.linux.org.uk,
	vgupta@...opsys.com, catalin.marinas@....com, will.deacon@....com,
	hskinnemoen@...il.com, egtvedt@...fundet.no, vapier@...too.org,
	msalter@...hat.com, a-jacquiot@...com, starvik@...s.com,
	jesper.nilsson@...s.com, dhowells@...hat.com, rkuo@...eaurora.org,
	tony.luck@...el.com, fenghua.yu@...el.com, takata@...ux-m32r.org,
	geert@...ux-m68k.org, james.hogan@...tec.com, monstr@...str.eu,
	yasutake.koichi@...panasonic.com, ralf@...ux-mips.org,
	jonas@...thpole.se, jejb@...isc-linux.org, deller@....de,
	benh@...nel.crashing.org, paulus@...ba.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, liqin.linux@...il.com,
	lennox.wu@...il.com, cmetcalf@...era.com, gxt@...c.pku.edu.cn,
	linux-xtensa@...ux-xtensa.org, akpm@...ux-foundation.org,
	oleg@...hat.com, tj@...nel.org, hch@...radead.org,
	Richard Weinberger <richard@....at>
Subject: [PATCH 28/44] Add translate_signal() helper

Translating signals is common task. Currently many arch have this
open coded. This provides a common helper for all archs.

Signed-off-by: Richard Weinberger <richard@....at>
---
 include/linux/signal.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/signal.h b/include/linux/signal.h
index ef8fcfd..5dfe4c8 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -2,6 +2,8 @@
 #define _LINUX_SIGNAL_H
 
 #include <linux/list.h>
+#include <linux/personality.h>
+#include <linux/thread_info.h>
 #include <uapi/linux/signal.h>
 
 struct task_struct;
@@ -285,6 +287,16 @@ struct ksignal {
 	int sig;
 };
 
+static inline int translate_signal(int sig)
+{
+	struct thread_info *info = current_thread_info();
+
+	if (info->exec_domain && info->exec_domain->signal_invmap && sig < 32)
+		return info->exec_domain->signal_invmap[sig];
+
+	return sig;
+}
+
 extern int get_signal(struct ksignal *ksig);
 extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping);
 extern void exit_signals(struct task_struct *tsk);
-- 
1.8.4.2

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