[LTP] [PATCH v2 3/3] syscalls/sigpending02.c: Add libc sigpending() detection && reset sighandler_counter

[Petr Vorel]

Hi Xiao,

> 1) bionic(Android libc) doesn't implement libc sigpending() currently,
>    so we can skip it on Android by the detection.

> 2) Fix sigpending02 -i n by resetting sighandler_counter variable.
Good catch, thanks!

> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>

...
> +++ b/testcases/kernel/syscalls/sigpending/sigpending02.c
> @@ -13,6 +13,7 @@
>   * Test 2: Call sigpending(sigset_t*=-1), it should return -1 with errno EFAULT.
>   */

> +#include "config.h"
>  #include "tst_test.h"
>  #include "ltp_signal.h"
>  #include "lapi/syscalls.h"
> @@ -36,7 +37,11 @@ static int tested_sigpending(sigset_t *sigset)
>  {
>  	switch (tst_variant) {
>  	case 0:
> +#ifndef HAVE_SIGPENDING
> +		tst_brk(TCONF, "libc sigpending() is not implemented");
> +#else
>  		return sigpending(sigset);
> +#endif
>  	break;
NOTE: I removed this break with 6d5b03aa9 ("Remove unnecessary breaks"),
so you need to add it when rebasing this commit.


>  	case 1:
>  		return tst_syscall(__NR_sigpending, sigset);
> @@ -60,6 +65,8 @@ static void test_sigpending(void)

>  	int i; /* loop index */

> +	sighandler_counter = 0;
> +
>  	/* set up signal mask and handler */
>  	sigset_t only_SIGUSR, old_mask;
>  	sighandler_t old_sighandler1, old_sighandler2;

Kind regards,
Petr