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selftests/clone3: skip if clone3() is ENOSYS 

If the clone3() syscall is not implemented we should skip the tests.

Fixes: 41585bbeee ("selftests: add tests for clone3() with *set_tid")
Fixes: 17a810699c ("selftests: add tests for clone3()")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2019-11-18 08:49:44 +01:00
parent a019ff3b8b
commit 11fde161ab
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
4 changed files with 33 additions and 30 deletions
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1
tools/testing/selftests/clone3/clone3.c
View File

@ -131,6 +131,7 @@ int main(int argc, char *argv[])
uid_t uid = getuid();
test_clone3_supported();
ksft_print_header();
ksft_set_plan(17);

29
tools/testing/selftests/clone3/clone3_clear_sighand.c
View File

@ -20,32 +20,6 @@
#define CLONE_CLEAR_SIGHAND 0x100000000ULL
#endif
static void test_clone3_supported(void)
{
pid_t pid;
struct clone_args args = {};
if (__NR_clone3 < 0)
ksft_exit_skip("clone3() syscall is not supported\n");
/* Set to something that will always cause EINVAL. */
args.exit_signal = -1;
pid = sys_clone3(&args, sizeof(args));
if (!pid)
exit(EXIT_SUCCESS);
if (pid > 0) {
wait(NULL);
ksft_exit_fail_msg(
"Managed to create child process with invalid exit_signal\n");
}
if (errno == ENOSYS)
ksft_exit_skip("clone3() syscall is not supported\n");
ksft_print_msg("clone3() syscall supported\n");
}
static void nop_handler(int signo)
{
}
@ -145,9 +119,10 @@ static void test_clone3_clear_sighand(void)
int main(int argc, char **argv)
{
ksft_print_header();
test_clone3_supported();
ksft_set_plan(1);
test_clone3_supported();
test_clone3_clear_sighand();
return ksft_exit_pass();

26
tools/testing/selftests/clone3/clone3_selftests.h
View File

@ -34,4 +34,30 @@ static pid_t sys_clone3(struct clone_args *args, size_t size)
return syscall(__NR_clone3, args, size);
}
static inline void test_clone3_supported(void)
{
pid_t pid;
struct clone_args args = {};
if (__NR_clone3 < 0)
ksft_exit_skip("clone3() syscall is not supported\n");
/* Set to something that will always cause EINVAL. */
args.exit_signal = -1;
pid = sys_clone3(&args, sizeof(args));
if (!pid)
exit(EXIT_SUCCESS);
if (pid > 0) {
wait(NULL);
ksft_exit_fail_msg(
"Managed to create child process with invalid exit_signal\n");
}
if (errno == ENOSYS)
ksft_exit_skip("clone3() syscall is not supported\n");
ksft_print_msg("clone3() syscall supported\n");
}
#endif /* _CLONE3_SELFTESTS_H */

7
tools/testing/selftests/clone3/clone3_set_tid.c
View File

@ -156,12 +156,13 @@ int main(int argc, char *argv[])
pid_t pid, ns1, ns2, ns3, ns_pid;
pid_t set_tid[MAX_PID_NS_LEVEL * 2];
ksft_print_header();
test_clone3_supported();
ksft_set_plan(29);
if (pipe(pipe_1) < 0 || pipe(pipe_2) < 0)
ksft_exit_fail_msg("pipe() failed\n");
ksft_print_header();
ksft_set_plan(29);
f = fopen("/proc/sys/kernel/pid_max", "r");
if (f == NULL)
ksft_exit_fail_msg(