[LTP] [PATCH v2 2/2] syscalls/setrlimit03.c: Cleanup && Convert to new API

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

Hi Cyril,

Could you help me review this patch? Thanks a lot.

Thanks,
Xiao Yang
On 2017/10/10 9:52, Xiao Yang wrote:
> 1) take use of safe macros
> 2) add a test for EINVAL
>
> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
> ---
>  testcases/kernel/syscalls/setrlimit/setrlimit03.c | 143 ++++++++--------------
>  1 file changed, 53 insertions(+), 90 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/setrlimit/setrlimit03.c b/testcases/kernel/syscalls/setrlimit/setrlimit03.c
> index e0beb17..d551c90 100644
> --- a/testcases/kernel/syscalls/setrlimit/setrlimit03.c
> +++ b/testcases/kernel/syscalls/setrlimit/setrlimit03.c
> @@ -1,116 +1,79 @@
>  /*
> + * Copyright (c) International Business Machines  Corp., 2001
> + * Copyright (c) 2017 Xiao Yang <yangx.jy@cn.fujitsu.com>
>   *
> - *   Copyright (c) International Business Machines  Corp., 2001
> + * This program is free software;  you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
>   *
> - *   This program is free software;  you can redistribute it and/or modify
> - *   it under the terms of the GNU General Public License as published by
> - *   the Free Software Foundation; either version 2 of the License, or
> - *   (at your option) any later version.
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY;  without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> + * the GNU General Public License for more details.
>   *
> - *   This program is distributed in the hope that it will be useful,
> - *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
> - *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> - *   the GNU General Public License for more details.
> - *
> - *   You should have received a copy of the GNU General Public License
> - *   along with this program;  if not, write to the Free Software
> - *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
> + * You should have received a copy of the GNU General Public License
> + * along with this program;  if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
>   */
>  
>  /*
> - * NAME
> - *	setrlimit03.c
> - *
>   * DESCRIPTION
> - *	Test for EPERM when the super-user tries to increase RLIMIT_NOFILE
> - *	beyond the system limit.
> - *
> - * USAGE:  <for command-line>
> - *  setrlimit03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
> - *     where,  -c n : Run n copies concurrently.
> - *             -e   : Turn on errno logging.
> - *             -i n : Execute test n times.
> - *             -I x : Execute test for x seconds.
> - *             -P x : Pause for x seconds between iterations.
> - *             -t   : Turn on syscall timing.
> - *
> - * HISTORY
> - *	07/2001 Ported by Wayne Boyer
> - *
> - * RESTRICTIONS
> - *	Must run test as root.
> + *  1) Test for EPERM when the super-user tries to increase RLIMIT_NOFILE
> + *     beyond the system limit.
> + *  2) Test for EINVAL when rlim->rlim_cur is greater than rlim->rlim_max.
>   */
> +
> +#include <errno.h>
>  #include <sys/time.h>
>  #include <sys/resource.h>
> -#include <unistd.h>
> -#include <errno.h>
> -#include "test.h"
>  #include <linux/fs.h>
> -
> -char *TCID = "setrlimit03";
> -int TST_TOTAL = 1;
> +#include "tst_test.h"
>  
>  #if !defined(NR_OPEN)
> -//Taken from definition in /usr/include/linux/fs.h
> -#define NR_OPEN (1024*1024)
> +// Taken from definition in /usr/include/linux/fs.h
> +# define NR_OPEN (1024*1024)
>  #endif
>  
> -void setup();
> -void cleanup();
> -
> -int main(int ac, char **av)
> -{
> -	int lc;
> -	struct rlimit rlim;
> -
> -	tst_parse_opts(ac, av, NULL, NULL);
> -
> -	setup();
> -
> -	for (lc = 0; TEST_LOOPING(lc); lc++) {
> +static struct rlimit rlim1, rlim2;
>  
> -		tst_count = 0;
> +static struct tcase {
> +	struct rlimit *rlimt;
> +	int exp_err;
> +} tcases[] = {
> +	{&rlim1, EPERM},
> +	{&rlim2, EINVAL}
> +};
>  
> -		if (getrlimit(RLIMIT_NOFILE, &rlim) != 0)
> -			tst_brkm(TFAIL, cleanup, "getrlimit failed, "
> -				 "errno = %d", errno);
> -		rlim.rlim_max = NR_OPEN + 1;
> -
> -		TEST(setrlimit(RLIMIT_NOFILE, &rlim));
> -
> -		if (TEST_RETURN != -1) {
> -			tst_resm(TFAIL, "call succeeded unexpectedly");
> -			continue;
> -		}
> +static void verify_setrlimit(unsigned int n)
> +{
> +	struct tcase *tc = &tcases[n];
>  
> -		if (TEST_ERRNO != EPERM) {
> -			tst_resm(TFAIL, "Expected EPERM, got %d", TEST_ERRNO);
> -		} else {
> -			tst_resm(TPASS, "got expected EPERM error");
> -		}
> +	TEST(setrlimit(RLIMIT_NOFILE, tc->rlimt));
> +	if (TEST_RETURN != -1) {
> +		tst_res(TFAIL, "call succeeded unexpectedly");
> +		return;
>  	}
> -	cleanup();
> -	tst_exit();
>  
> +	if (TEST_ERRNO != tc->exp_err) {
> +		tst_res(TFAIL | TTERRNO, "setrlimit() should fail with %s, got",
> +			tst_strerrno(tc->exp_err));
> +	} else {
> +		tst_res(TPASS | TTERRNO, "setrlimit() failed as expected");
> +	}
>  }
>  
> -/*
> - * setup() - performs all ONE TIME setup for this test.
> - */
> -void setup(void)
> +static void setup(void)
>  {
> -	tst_require_root();
> -
> -	tst_sig(FORK, DEF_HANDLER, cleanup);
> -
> -	TEST_PAUSE;
> +	SAFE_GETRLIMIT(RLIMIT_NOFILE, &rlim1);
> +	rlim2.rlim_max = rlim1.rlim_cur;
> +	rlim2.rlim_cur = rlim1.rlim_max + 1;
> +	rlim1.rlim_max = NR_OPEN + 1;
>  }
>  
> -/*
> - * cleanup() - performs all ONE TIME cleanup for this test at
> - *	       completion or premature exit.
> - */
> -void cleanup(void)
> -{
> -
> -}
> +static struct tst_test test = {
> +	.setup = setup,
> +	.tcnt = ARRAY_SIZE(tcases),
> +	.test = verify_setrlimit,
> +	.needs_root = 1
> +};