selftests: add tests for clone3() with *set_tid

This tests clone3() with *set_tid to see if all desired PIDs are working
as expected. The tests are trying multiple invalid input parameters as
well as creating processes while specifying a certain PID in multiple
PID namespaces at the same time.

Additionally this moves common clone3() test code into clone3_selftests.h.

Signed-off-by: Adrian Reber <areber@redhat.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20191115123621.142252-2-areber@redhat.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

1 files changed, 1 insertions, 19 deletions

diff --git a/tools/testing/selftests/clone3/clone3_clear_sighand.c b/tools/testing/selftests/clone3/clone3_clear_sighand.c
index 0d957be1bdc5..456783ad19d6 100644
--- a/tools/testing/selftests/clone3/clone3_clear_sighand.c
+++ b/tools/testing/selftests/clone3/clone3_clear_sighand.c
@@ -14,30 +14,12 @@
 #include <sys/wait.h>
 
 #include "../kselftest.h"
+#include "clone3_selftests.h"
 
 #ifndef CLONE_CLEAR_SIGHAND
 #define CLONE_CLEAR_SIGHAND 0x100000000ULL
 #endif
 
-#ifndef __NR_clone3
-#define __NR_clone3 -1
-struct clone_args {
-	__aligned_u64 flags;
-	__aligned_u64 pidfd;
-	__aligned_u64 child_tid;
-	__aligned_u64 parent_tid;
-	__aligned_u64 exit_signal;
-	__aligned_u64 stack;
-	__aligned_u64 stack_size;
-	__aligned_u64 tls;
-};
-#endif
-
-static pid_t sys_clone3(struct clone_args *args, size_t size)
-{
-	return syscall(__NR_clone3, args, size);
-}
-
 static void test_clone3_supported(void)
 {
 	pid_t pid;