linux-kernel - [PATCH] seccomp: fix SECCOMP_USER_NOTIF_FLAG

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Message-Id: <20191021091055.4644-1-christian.brauner@ubuntu.com>
Date:   Mon, 21 Oct 2019 11:10:55 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     linux-kernel@...r.kernel.org, keescook@...omium.org
Cc:     rong.a.chen@...el.com, ast@...nel.org,
        christian.brauner@...ntu.com, daniel@...earbox.net, kafai@...com,
        lkp@...ts.01.org, luto@...capital.net, shuah@...nel.org,
        songliubraving@...com, tycho@...ho.ws, tyhicks@...onical.com,
        wad@...omium.org, yhs@...com, linux-kselftest@...r.kernel.org
Subject: [PATCH] seccomp: fix SECCOMP_USER_NOTIF_FLAG_CONTINUE test

The ifndef for SECCOMP_USER_NOTIF_FLAG_CONTINUE was placed under the
ifndef for the SECCOMP_FILTER_FLAG_NEW_LISTENER feature. This will not
work on systems that do support SECCOMP_FILTER_FLAG_NEW_LISTENER but do not
support SECCOMP_USER_NOTIF_FLAG_CONTINUE. So move the latter ifndef out of
the former ifndef's scope.

2019-10-20 11:14:01 make run_tests -C seccomp
make: Entering directory '/usr/src/perf_selftests-x86_64-rhel-7.6-0eebfed2954f152259cae0ad57b91d3ea92968e8/tools/testing/selftests/seccomp'
gcc -Wl,-no-as-needed -Wall  seccomp_bpf.c -lpthread -o seccomp_bpf
seccomp_bpf.c: In function ‘user_notification_continue’:
seccomp_bpf.c:3562:15: error: ‘SECCOMP_USER_NOTIF_FLAG_CONTINUE’ undeclared (first use in this function)
  resp.flags = SECCOMP_USER_NOTIF_FLAG_CONTINUE;
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
seccomp_bpf.c:3562:15: note: each undeclared identifier is reported only once for each function it appears in
Makefile:12: recipe for target 'seccomp_bpf' failed
make: *** [seccomp_bpf] Error 1
make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.6-0eebfed2954f152259cae0ad57b91d3ea92968e8/tools/testing/selftests/seccomp'

Reported-by: kernel test robot <rong.a.chen@...el.com>
Fixes: 0eebfed2954f ("seccomp: test SECCOMP_USER_NOTIF_FLAG_CONTINUE")
Cc: linux-kselftest@...r.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 2519377ebda3..9669b81086cf 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -168,10 +168,6 @@ struct seccomp_metadata {
 
 #define SECCOMP_RET_USER_NOTIF 0x7fc00000U
 
-#ifndef SECCOMP_USER_NOTIF_FLAG_CONTINUE
-#define SECCOMP_USER_NOTIF_FLAG_CONTINUE 0x00000001
-#endif
-
 #define SECCOMP_IOC_MAGIC		'!'
 #define SECCOMP_IO(nr)			_IO(SECCOMP_IOC_MAGIC, nr)
 #define SECCOMP_IOR(nr, type)		_IOR(SECCOMP_IOC_MAGIC, nr, type)
@@ -205,6 +201,10 @@ struct seccomp_notif_sizes {
 };
 #endif
 
+#ifndef SECCOMP_USER_NOTIF_FLAG_CONTINUE
+#define SECCOMP_USER_NOTIF_FLAG_CONTINUE 0x00000001
+#endif
+
 #ifndef seccomp
 int seccomp(unsigned int op, unsigned int flags, void *args)
 {
-- 
2.23.0