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selftests: add tests for clone3() with *set_tid

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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>
This commit is contained in:
Adrian Reber
2019-11-15 13:36:21 +01:00
committed by Christian Brauner
parent 49cb2fc42c
commit 41585bbeee
6 changed files with 421 additions and 26 deletions
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8
tools/testing/selftests/clone3/clone3.c
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@@ -18,6 +18,7 @@
#include <sched.h>
#include "../kselftest.h"
#include "clone3_selftests.h"
/*
* Different sizes of struct clone_args
@@ -35,11 +36,6 @@ enum test_mode {
CLONE3_ARGS_INVAL_EXIT_SIGNAL_NSIG,
};
static pid_t raw_clone(struct clone_args *args, size_t size)
{
return syscall(__NR_clone3, args, size);
}
static int call_clone3(uint64_t flags, size_t size, enum test_mode test_mode)
{
struct clone_args args = {
@@ -83,7 +79,7 @@ static int call_clone3(uint64_t flags, size_t size, enum test_mode test_mode)
memcpy(&args_ext.args, &args, sizeof(struct clone_args));
pid = raw_clone((struct clone_args *)&args_ext, size);
pid = sys_clone3((struct clone_args *)&args_ext, size);
if (pid < 0) {
ksft_print_msg("%s - Failed to create new process\n",
strerror(errno));