linux-kernel - [PATCH 5.1 081/121] tests: fix pidfd-test compilation

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Date:   Mon, 24 Jun 2019 17:56:53 +0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christian Brauner <christian@...uner.io>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.1 081/121] tests: fix pidfd-test compilation

[ Upstream commit 1fcd0eb356ad56c4e405f06e31dd9fde2109d5ab ]

Define __NR_pidfd_send_signal if it isn't to prevent a potential
compilation error.

To make pidfd-test compile on all arches, irrespective of whether
or not syscall numbers are assigned, define the syscall number to -1.
If it isn't defined this will cause the kernel to return -ENOSYS.

Fixes: 575a0ae9744d ("selftests: add tests for pidfd_send_signal()")
Signed-off-by: Christian Brauner <christian@...uner.io>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/pidfd/pidfd_test.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/pidfd/pidfd_test.c b/tools/testing/selftests/pidfd/pidfd_test.c
index d59378a93782..20323f55613a 100644
--- a/tools/testing/selftests/pidfd/pidfd_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_test.c
@@ -16,6 +16,10 @@
 
 #include "../kselftest.h"
 
+#ifndef __NR_pidfd_send_signal
+#define __NR_pidfd_send_signal -1
+#endif
+
 static inline int sys_pidfd_send_signal(int pidfd, int sig, siginfo_t *info,
 					unsigned int flags)
 {
-- 
2.20.1