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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/clone3/clone3_selftests.h | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/clone3/clone3_selftests.h')
-rw-r--r-- | tools/testing/selftests/clone3/clone3_selftests.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/testing/selftests/clone3/clone3_selftests.h b/tools/testing/selftests/clone3/clone3_selftests.h new file mode 100644 index 000000000..e81ffaaee --- /dev/null +++ b/tools/testing/selftests/clone3/clone3_selftests.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _CLONE3_SELFTESTS_H +#define _CLONE3_SELFTESTS_H + +#define _GNU_SOURCE +#include <sched.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <stdint.h> +#include <syscall.h> +#include <sys/wait.h> + +#include "../kselftest.h" + +#define ptr_to_u64(ptr) ((__u64)((uintptr_t)(ptr))) + +#ifndef CLONE_INTO_CGROUP +#define CLONE_INTO_CGROUP 0x200000000ULL /* Clone into a specific cgroup given the right permissions. */ +#endif + +#ifndef __NR_clone3 +#define __NR_clone3 -1 +#endif + +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; +#ifndef CLONE_ARGS_SIZE_VER0 +#define CLONE_ARGS_SIZE_VER0 64 /* sizeof first published struct */ +#endif + __aligned_u64 set_tid; + __aligned_u64 set_tid_size; +#ifndef CLONE_ARGS_SIZE_VER1 +#define CLONE_ARGS_SIZE_VER1 80 /* sizeof second published struct */ +#endif + __aligned_u64 cgroup; +#ifndef CLONE_ARGS_SIZE_VER2 +#define CLONE_ARGS_SIZE_VER2 88 /* sizeof third published struct */ +#endif +}; + +static pid_t sys_clone3(struct __clone_args *args, size_t size) +{ + fflush(stdout); + fflush(stderr); + 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 */ |