linux-kernel - [PATCH AUTOSEL for 4.15 071/102] tools/usbip: fixes build with musl libc toolchain

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Message-ID: <20180303222318.26006-71-alexander.levin@microsoft.com>
Date:   Sat, 3 Mar 2018 22:24:50 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Julien BOIBESSOT <julien.boibessot@...adeus.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.15 071/102] tools/usbip: fixes build with musl
 libc toolchain

From: Julien BOIBESSOT <julien.boibessot@...adeus.com>

[ Upstream commit 77be4c878c72e411ad22af96b6f81dd45c26450a ]

Indeed musl doesn't define old SIGCLD signal name but only new one SIGCHLD.
SIGCHLD is the new POSIX name for that signal so it doesn't change
anything on other libcs.

This fixes this kind of build error:

usbipd.c: In function ‘set_signal’:
usbipd.c:459:12: error: 'SIGCLD' undeclared (first use in this function)
  sigaction(SIGCLD, &act, NULL);
            ^~~~~~
usbipd.c:459:12: note: each undeclared identifier is reported only once
	for each function it appears in
Makefile:407: recipe for target 'usbipd.o' failed
make[3]: *** [usbipd.o] Error 1

Signed-off-by: Julien BOIBESSOT <julien.boibessot@...adeus.com>
Acked-by: Shuah Khan <shuahkh@....samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 tools/usb/usbip/src/usbipd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/usb/usbip/src/usbipd.c b/tools/usb/usbip/src/usbipd.c
index 009afb4a3aae..c6dad2a13c80 100644
--- a/tools/usb/usbip/src/usbipd.c
+++ b/tools/usb/usbip/src/usbipd.c
@@ -456,7 +456,7 @@ static void set_signal(void)
 	sigaction(SIGTERM, &act, NULL);
 	sigaction(SIGINT, &act, NULL);
 	act.sa_handler = SIG_IGN;
-	sigaction(SIGCLD, &act, NULL);
+	sigaction(SIGCHLD, &act, NULL);
 }
 
 static const char *pid_file;
-- 
2.14.1