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Message-ID: <CABi2SkXXrcZgrzsQ7=W1hHJiKKPY=ypW2g+PW1apVuWAAG1Mvg@mail.gmail.com>
Date: Mon, 10 Jun 2024 21:26:58 -0700
From: Jeff Xu <jeffxu@...omium.org>
To: John Hubbard <jhubbard@...dia.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Shuah Khan <shuah@...nel.org>,
Andrei Vagin <avagin@...gle.com>, Axel Rasmussen <axelrasmussen@...gle.com>,
Christian Brauner <brauner@...nel.org>, David Hildenbrand <david@...hat.com>, Kees Cook <kees@...nel.org>,
Kent Overstreet <kent.overstreet@...ux.dev>, "Liam R . Howlett" <Liam.Howlett@...cle.com>,
Muhammad Usama Anjum <usama.anjum@...labora.com>, Peter Xu <peterx@...hat.com>,
Rich Felker <dalias@...c.org>, linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/5] selftests/mm: mseal, self_elf: factor out test macros
and other duplicated items
On Fri, Jun 7, 2024 at 7:10 PM John Hubbard <jhubbard@...dia.com> wrote:
>
> Clean up and move some copy-pasted items into mseal_helpers.h.
>
> 1. The test macros can be made safer and simpler, by observing that they
> are invariably called when about to return. This means that the macros
> do not need an intrusive label to goto; they can simply return.
>
> 2. PKEY* items. We cannot, unfortunately use pkey-helpers.h. The best we
> can do is to factor out these few items into mseal_helpers.h.
>
> 3. These tests still need their own definition of u64, so also move that
> to the header file.
>
> Cc: Jeff Xu <jeffxu@...omium.org>
> Signed-off-by: John Hubbard <jhubbard@...dia.com>
Reviewed-by: Jeff Xu <jeffxu@...omium.org>
Tested-by: Jeff Xu <jeffxu@...omium.org>
> ---
> tools/testing/selftests/mm/mseal_helpers.h | 40 ++++++++++++++++++
> tools/testing/selftests/mm/mseal_test.c | 48 ----------------------
> tools/testing/selftests/mm/seal_elf.c | 32 ---------------
> 3 files changed, 40 insertions(+), 80 deletions(-)
>
> diff --git a/tools/testing/selftests/mm/mseal_helpers.h b/tools/testing/selftests/mm/mseal_helpers.h
> index b922d453a014..8c3bf77dcf19 100644
> --- a/tools/testing/selftests/mm/mseal_helpers.h
> +++ b/tools/testing/selftests/mm/mseal_helpers.h
> @@ -3,3 +3,43 @@
> #ifndef __NR_mseal
> #define __NR_mseal 462
> #endif
> +
> +#define FAIL_TEST_IF_FALSE(test_passed) \
> + do { \
> + if (!(test_passed)) { \
> + ksft_test_result_fail("%s: line:%d\n", \
> + __func__, __LINE__); \
> + return; \
> + } \
> + } while (0)
> +
> +#define SKIP_TEST_IF_FALSE(test_passed) \
> + do { \
> + if (!(test_passed)) { \
> + ksft_test_result_skip("%s: line:%d\n", \
> + __func__, __LINE__); \
> + return; \
> + } \
> + } while (0)
> +
> +#define TEST_END_CHECK() ksft_test_result_pass("%s\n", __func__)
> +
> +#ifndef PKEY_DISABLE_ACCESS
> +#define PKEY_DISABLE_ACCESS 0x1
> +#endif
> +
> +#ifndef PKEY_DISABLE_WRITE
> +#define PKEY_DISABLE_WRITE 0x2
> +#endif
> +
> +#ifndef PKEY_BITS_PER_PKEY
> +#define PKEY_BITS_PER_PKEY 2
> +#endif
> +
> +#ifndef PKEY_MASK
> +#define PKEY_MASK (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE)
> +#endif
> +
> +#ifndef u64
> +#define u64 unsigned long long
> +#endif
> diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c
> index 20949617a036..a29935d82027 100644
> --- a/tools/testing/selftests/mm/mseal_test.c
> +++ b/tools/testing/selftests/mm/mseal_test.c
> @@ -19,54 +19,6 @@
> #include <sys/stat.h>
> #include "mseal_helpers.h"
>
> -/*
> - * need those definition for manually build using gcc.
> - * gcc -I ../../../../usr/include -DDEBUG -O3 -DDEBUG -O3 mseal_test.c -o mseal_test
> - */
> -#ifndef PKEY_DISABLE_ACCESS
> -# define PKEY_DISABLE_ACCESS 0x1
> -#endif
> -
> -#ifndef PKEY_DISABLE_WRITE
> -# define PKEY_DISABLE_WRITE 0x2
> -#endif
> -
> -#ifndef PKEY_BITS_PER_PKEY
> -#define PKEY_BITS_PER_PKEY 2
> -#endif
> -
> -#ifndef PKEY_MASK
> -#define PKEY_MASK (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE)
> -#endif
> -
> -#define FAIL_TEST_IF_FALSE(c) do {\
> - if (!(c)) {\
> - ksft_test_result_fail("%s, line:%d\n", __func__, __LINE__);\
> - goto test_end;\
> - } \
> - } \
> - while (0)
> -
> -#define SKIP_TEST_IF_FALSE(c) do {\
> - if (!(c)) {\
> - ksft_test_result_skip("%s, line:%d\n", __func__, __LINE__);\
> - goto test_end;\
> - } \
> - } \
> - while (0)
> -
> -
> -#define TEST_END_CHECK() {\
> - ksft_test_result_pass("%s\n", __func__);\
> - return;\
> -test_end:\
> - return;\
> -}
> -
> -#ifndef u64
> -#define u64 unsigned long long
> -#endif
> -
> static unsigned long get_vma_size(void *addr, int *prot)
> {
> FILE *maps;
> diff --git a/tools/testing/selftests/mm/seal_elf.c b/tools/testing/selftests/mm/seal_elf.c
> index 4053951a535c..0fd129259647 100644
> --- a/tools/testing/selftests/mm/seal_elf.c
> +++ b/tools/testing/selftests/mm/seal_elf.c
> @@ -18,38 +18,6 @@
> #include <sys/stat.h>
> #include "mseal_helpers.h"
>
> -/*
> - * need those definition for manually build using gcc.
> - * gcc -I ../../../../usr/include -DDEBUG -O3 -DDEBUG -O3 seal_elf.c -o seal_elf
> - */
> -#define FAIL_TEST_IF_FALSE(c) do {\
> - if (!(c)) {\
> - ksft_test_result_fail("%s, line:%d\n", __func__, __LINE__);\
> - goto test_end;\
> - } \
> - } \
> - while (0)
> -
> -#define SKIP_TEST_IF_FALSE(c) do {\
> - if (!(c)) {\
> - ksft_test_result_skip("%s, line:%d\n", __func__, __LINE__);\
> - goto test_end;\
> - } \
> - } \
> - while (0)
> -
> -
> -#define TEST_END_CHECK() {\
> - ksft_test_result_pass("%s\n", __func__);\
> - return;\
> -test_end:\
> - return;\
> -}
> -
> -#ifndef u64
> -#define u64 unsigned long long
> -#endif
> -
> /*
> * define sys_xyx to call syscall directly.
> */
> --
> 2.45.2
>
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