[LTP] [PATCH v2] syscalls/ipc: Check whether kernel supports *_STAT_ANY

[xuyang2018.jy@fujitsu.com]

Hi Gongyi
> SHM_STAT_ANY,SEM_STAT_ANY and MSG_STAT_ANY are imported to linux
> in v4.17, and some linux distribution such as centos7.8 has
> backported this feature, so we should call SHM_STAT_ANY directly
> to detect whether kernel supports *_STAT_ANY.
Also fix wrong TTERRNO usage.
>
> Signed-off-by: Zhao Gongyi<zhaogongyi@huawei.com>
> ---
> v1->v2:
> 	1) call SHM_STAT_ANY directly to detect whether kernel supports
> 	   SHM_STAT_ANY instead of using min_kver
> 	2) fix MSG_STAT_ANY,SEM_STAT_ANY similarly
>
>   testcases/kernel/syscalls/ipc/msgctl/msgctl06.c | 15 ++++++++++++++-
>   testcases/kernel/syscalls/ipc/semctl/semctl09.c | 14 +++++++++++++-
>   testcases/kernel/syscalls/ipc/shmctl/shmctl04.c | 12 ++++++++++++
>   3 files changed, 39 insertions(+), 2 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/ipc/msgctl/msgctl06.c b/testcases/kernel/syscalls/ipc/msgctl/msgctl06.c
> index 722a0cca0..d4ec4876a 100644
> --- a/testcases/kernel/syscalls/ipc/msgctl/msgctl06.c
> +++ b/testcases/kernel/syscalls/ipc/msgctl/msgctl06.c
> @@ -115,7 +115,7 @@ static void verify_msgctl(unsigned int n)
>   	msgid = msgctl(TST_RET, MSG_STAT_ANY,&buf);
>
>   	if (msgid == -1) {
> -		tst_res(TFAIL | TTERRNO, "MSG_INFO haven't returned a valid index");
> +		tst_res(TFAIL | TERRNO, "MSG_INFO haven't returned a valid index");
>   	} else {
>   		tst_res(TPASS, "MSG_INFO returned valid index %li to msgid %i",
>   			TST_RET, msgid);
> @@ -138,12 +138,25 @@ static void verify_msgctl(unsigned int n)
>
>   static void setup(void)
>   {
> +	struct msqid_ds temp_buf;
>   	ltpuser = SAFE_GETPWNAM("nobody");
>   	nobody_uid = ltpuser->pw_uid;
>   	root_uid = 0;
>
>   	msg_id = SAFE_MSGGET(IPC_PRIVATE, IPC_CREAT | MSG_RW);
>   	SAFE_MSGSND(msg_id, "abcd", 4, 0);
> +
> +	TEST(msgctl(msg_id, MSG_STAT_ANY,&temp_buf));
> +	if (TST_RET == -1) {
> +		if (TST_ERR == EINVAL)
> +			tst_brk(TCONF, "kernel doesn't support "
> +					"MSG_STAT_ANY");
It's better to have a single line message.
> +		else
> +			tst_brk(TBROK | TTERRNO,
> +					"Current environment doesn't permit "
> +					"MSG_STAT_ANY");
Here as well.
> +	}
> +
>   }
>
>   static void cleanup(void)
> diff --git a/testcases/kernel/syscalls/ipc/semctl/semctl09.c b/testcases/kernel/syscalls/ipc/semctl/semctl09.c
> index 5a81f778c..197696df7 100644
> --- a/testcases/kernel/syscalls/ipc/semctl/semctl09.c
> +++ b/testcases/kernel/syscalls/ipc/semctl/semctl09.c
> @@ -158,7 +158,7 @@ static void verify_semctl(unsigned int n)
>   				"specified by the caller to kernel");
>   		return;
>   	} else if (semid == -1) {
> -		tst_res(TFAIL | TTERRNO, "SEM_INFO haven't returned a valid index");
> +		tst_res(TFAIL | TERRNO, "SEM_INFO haven't returned a valid index");
>   	} else {
>   		tst_res(TPASS, "SEM_INFO returned valid index %li to semid %i",
>   			TST_RET, semid);
> @@ -193,6 +193,18 @@ static void setup(void)
>   #endif
>
>   	sem_id = SAFE_SEMGET(IPC_PRIVATE, 2, IPC_CREAT | 0600);
> +
> +	TEST(do_semctl(sem_id, 0, SEM_STAT_ANY));
> +	if (TST_RET == -1) {
Since here has a glibc bug, we should also report FAIL, so we can print 
glibc git url.
		if (errno == EFAULT)
                 	tst_brk(TFAIL, "SEM_STAT_ANY doesn't pass the buffer 
specified by the caller to kernel");

> +		if (TST_ERR == EINVAL)
> +			tst_brk(TCONF, "kernel doesn't support "
> +					"SEM_STAT_ANY");

> +		else
> +			tst_brk(TBROK | TTERRNO,
> +					"Current environment doesn't permit "
> +					"SEM_STAT_ANY");

> +	}
> +
>   }
>
>   static void cleanup(void)
> diff --git a/testcases/kernel/syscalls/ipc/shmctl/shmctl04.c b/testcases/kernel/syscalls/ipc/shmctl/shmctl04.c
> index 9e8ec4199..9a60c5170 100644
> --- a/testcases/kernel/syscalls/ipc/shmctl/shmctl04.c
> +++ b/testcases/kernel/syscalls/ipc/shmctl/shmctl04.c
> @@ -155,10 +155,22 @@ static void verify_shminfo(unsigned int n)
>   static void setup(void)
>   {
>   	struct passwd *ltpuser = SAFE_GETPWNAM("nobody");
> +	struct shmid_ds temp_ds;
>   	nobody_uid = ltpuser->pw_uid;
>   	root_uid = 0;
>
>   	shm_id = SAFE_SHMGET(IPC_PRIVATE, SHM_SIZE, IPC_CREAT | SHM_RW);
> +
> +	TEST(shmctl(shm_id, SHM_STAT_ANY,&temp_ds));
> +	if (TST_RET == -1) {
> +		if (TST_ERR == EINVAL)
> +			tst_brk(TCONF, "kernel doesn't support "
> +					"SHM_STAT_ANY");

> +		else
> +			tst_brk(TBROK | TTERRNO,
> +					"Current environment doesn't permit "
> +					"SHM_STAT_ANY");

> +	}
>   }
>
>   static void cleanup(void)
> --
> 2.17.1
>
>