[LTP] [PATCH 1/1] containers: Remove setns_check

[Petr Vorel]

setns_check.c was used to verify __NR_setns support.
It was added in Linux 3.0 and SYSCALL_DEFINE2(setns, int, fd, int,
flags) is not guarded by any configuration variable.

=> safe to remove the helper.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 doc/namespaces-helper-tools.txt               |  2 --
 .../kernel/containers/netns/netns_lib.sh      |  3 --
 .../kernel/containers/netns/netns_sysfs.sh    |  5 ---
 testcases/kernel/containers/share/.gitignore  |  1 -
 .../kernel/containers/share/setns_check.c     | 32 -------------------
 5 files changed, 43 deletions(-)
 delete mode 100644 testcases/kernel/containers/share/setns_check.c

diff --git a/doc/namespaces-helper-tools.txt b/doc/namespaces-helper-tools.txt
index 6990e0155a..81eec4d6ca 100644
--- a/doc/namespaces-helper-tools.txt
+++ b/doc/namespaces-helper-tools.txt
@@ -14,8 +14,6 @@ located in ltp/testcases/kernel/containers/share directory and include:
 ** PID of the daemonized child process is printed on the stdout
 ** the new namespace(s) is(are) maintained by the daemonized child process
 ** namespace(s) can be removed by killing the daemonized process
-* setns_check
-** check for setns() availability, should be called before using ns_exec
 * ns_exec
 ** enters the namespace(s) of a process specified by a PID
 ** then executes the indicated program inside that namespace(s)
diff --git a/testcases/kernel/containers/netns/netns_lib.sh b/testcases/kernel/containers/netns/netns_lib.sh
index 79e90336a8..039631e9f6 100755
--- a/testcases/kernel/containers/netns/netns_lib.sh
+++ b/testcases/kernel/containers/netns/netns_lib.sh
@@ -72,9 +72,6 @@ netns_setup()
 	if [ "$NS_EXEC" = "ip" ]; then
 		netns_ip_setup
 	else
-		setns_check
-		[ $? -eq 32 ] && tst_brk TCONF "setns not supported"
-
 		NS_TYPE="net"
 		netns_ns_exec_setup
 	fi
diff --git a/testcases/kernel/containers/netns/netns_sysfs.sh b/testcases/kernel/containers/netns/netns_sysfs.sh
index 1792427210..34ef3b8eef 100755
--- a/testcases/kernel/containers/netns/netns_sysfs.sh
+++ b/testcases/kernel/containers/netns/netns_sysfs.sh
@@ -18,11 +18,6 @@ do_setup()
 	DUMMYDEV_HOST="dummy_test0"
 	DUMMYDEV="dummy_test1"
 
-	setns_check
-	if [ $? -eq 32 ]; then
-		tst_brk TCONF "setns not supported"
-	fi
-
 	NS_HANDLE=$(ns_create $NS_TYPE)
 	if [ $? -eq 1 ]; then
 		tst_res TINFO "$NS_HANDLE"
diff --git a/testcases/kernel/containers/share/.gitignore b/testcases/kernel/containers/share/.gitignore
index 06615d9ea2..0d5ecf069d 100644
--- a/testcases/kernel/containers/share/.gitignore
+++ b/testcases/kernel/containers/share/.gitignore
@@ -1,4 +1,3 @@
 /ns_ifmove
 /ns_create
 /ns_exec
-/setns_check
diff --git a/testcases/kernel/containers/share/setns_check.c b/testcases/kernel/containers/share/setns_check.c
deleted file mode 100644
index 75aad17f3a..0000000000
--- a/testcases/kernel/containers/share/setns_check.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Copyright (c) 2015 Fujitsu Ltd.
- * Author: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of version 2 the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- ***********************************************************************
- * Check for setns() availability, should be called before ns_exec.
- *
- */
-
-#include "test.h"
-#include "lapi/syscalls.h"
-
-char *TCID = "setns_check";
-
-int main(void)
-{
-	if (syscall(__NR_setns, -1, 0) == -1 && errno == ENOSYS)
-		tst_brkm(TCONF, NULL, "setns is not supported in the kernel");
-	else
-		return 0;
-}
-- 
2.39.0