Re: [LTP] [PATCHv3] containers: Use ltp_syscall for setns incase some libc library do not support it

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> From: "Hangbin Liu" <liuhangbin@gmail.com>
> To: "LTP List" <ltp-list@lists.sourceforge.net>
> Cc: "Jan Stancek" <jstancek@redhat.com>
> Sent: Wednesday, 1 July, 2015 8:35:32 AM
> Subject: [LTP][PATCHv3] containers: Use ltp_syscall for setns incase some libc library do not support it
> 
> Use ltp_syscall for setns incase some libc library do not support it. Also
> check whether we support setns in setup(). If it's support the syscall will
> silently fails and test continues. If not, then tst_brkm call will end the
> test with TCONF.
> 
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>

Pushed with cosmetic change to commit message.

Thanks,
Jan

> ---
>  testcases/kernel/containers/userns/userns04.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/testcases/kernel/containers/userns/userns04.c
> b/testcases/kernel/containers/userns/userns04.c
> index 7077679..9836fd9 100644
> --- a/testcases/kernel/containers/userns/userns04.c
> +++ b/testcases/kernel/containers/userns/userns04.c
> @@ -35,6 +35,7 @@ int TST_TOTAL = 1;
>  static void setup(void)
>  {
>  	check_newuser();
> +	ltp_syscall(__NR_setns, -1, 0);
>  	tst_tmpdir();
>  	TST_CHECKPOINT_INIT(NULL);
>  }
> @@ -55,7 +56,7 @@ static int child_fn2(void *arg)
>  	int exit_val = 0;
>  	int ret;
>  
> -	ret = setns(((long)arg), CLONE_NEWUSER);
> +	ret = ltp_syscall(__NR_setns, ((long)arg), CLONE_NEWUSER);
>  	if (ret != -1) {
>  		printf("child2 setns() unexpected success\n");
>  		exit_val = 1;
> @@ -112,7 +113,7 @@ static void test_cap_sys_admin(void)
>  	case -1:
>  		tst_brkm(TBROK | TERRNO, cleanup, "fork");
>  	case 0:
> -		if (setns(fd, CLONE_NEWUSER) == -1) {
> +		if (ltp_syscall(__NR_setns, fd, CLONE_NEWUSER) == -1) {
>  			printf("parent pid setns failure: (%d) %s",
>  				errno, strerror(errno));
>  			exit(1);
> --
> 1.9.3
> 
> 

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