[LTP] [PATCH 1/2] syscalls/fcntl12: Convert to new API

[xuyang2018.jy@fujitsu.com]

Hi Dai

I do some minor changes and pushed, thanks.

1) move getdtablesize into setup function and include <unistd.h> header
2) fix TST_EXP_FAIL2 usage
3) fix EMFILE description as man-pages said
4) move i,pid variable declaration to verify_fcntl funtion.

Best Regards
Yang Xu
> 1) use SAFE macro
> 2) use TST_EXP_FAIL2 macro
>
> Signed-off-by: Dai Shili<daisl.fnst@fujitsu.com>
> ---
>   testcases/kernel/syscalls/fcntl/fcntl12.c | 135 ++++++++----------------------
>   1 file changed, 36 insertions(+), 99 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/fcntl/fcntl12.c b/testcases/kernel/syscalls/fcntl/fcntl12.c
> index ae382dd..e4dbe42 100644
> --- a/testcases/kernel/syscalls/fcntl/fcntl12.c
> +++ b/testcases/kernel/syscalls/fcntl/fcntl12.c
> @@ -1,120 +1,57 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
>   /*
> - *
> - *   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 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
> + * Copyright (c) Linux Test Project, 2021
> + * Copyright (c) International Business Machines  Corp., 2001
> + * 07/2001 Ported by Wayne Boyer
>    */
>
> -/*
> - * NAME
> - *	fcntl12.c
> +/*\
> + * [Description]
>    *
> - * DESCRIPTION
> - *	Testcase to test that fcntl() sets EMFILE for F_DUPFD command.
> + * Tests basic error handling of the fcntl syscall.
>    *
> - * ALGORITHM
> - *	Get the size of the descriptor table of a process, by calling the
> - *	getdtablesize() system call. Then attempt to use the F_DUPFD command
> - *	for fcntl(), which should fail with EMFILE.
> - *
> - * USAGE
> - *	fcntl12
> - *
> - * HISTORY
> - *	07/2001 Ported by Wayne Boyer
> - *
> - * RESTRICTIONS
> - *	NONE
> + * - EMFILE when cmd refers to F_DUPFD after gets the size of the descriptor table of a process
>    */
>
>   #include<fcntl.h>
>   #include<sys/types.h>
>   #include<sys/wait.h>
> -#include<errno.h>
> -#include "test.h"
> +#include<stdlib.h>
> +#include "tst_test.h"
>
> -char *TCID = "fcntl12";
> -int TST_TOTAL = 1;
> +static pid_t pid;
> +static char fname[20] = "testfile";
> +static int fd = -1;
> +static int i, max_files;
>
> -int fail;
> -char fname[20];
> -void setup(void);
> -void cleanup(void);
> -
> -int main(int ac, char **av)
> +static void verify_fcntl(void)
>   {
> -	int lc;
> -
> -	pid_t pid;
> -	int fd, i, status, max_files;
> -
> -	tst_parse_opts(ac, av, NULL, NULL);
> -
> -	setup();
> -
> -	/* check for looping state if -i option is given */
> -	for (lc = 0; TEST_LOOPING(lc); lc++) {
> -		tst_count = 0;
> -
> -		tst_resm(TINFO, "Test for errno EMFILE");
> -		fail = 0;
> -
> -		pid = FORK_OR_VFORK();
> -		if (pid<  0) {
> -			tst_brkm(TBROK | TERRNO, cleanup, "Fork failed");
> -		} else if (pid == 0) {
> -			max_files = getdtablesize();
> -			for (i = 0; i<  max_files; i++) {
> -				if ((fd = open(fname, O_CREAT | O_RDONLY,
> -					       0444)) == -1) {
> -					break;
> -				}
> -			}
> -
> -			if (fcntl(1, F_DUPFD, 1) != -1) {
> -				tst_resm(TFAIL, "fcntl failed to FAIL");
> -				exit(1);
> -			} else if (errno != EMFILE) {
> -				tst_resm(TFAIL, "Expected EMFILE got %d",
> -					 errno);
> -				exit(1);
> -			}
> -			exit(0);
> +	pid = SAFE_FORK();
> +	if (pid == 0) {
> +		max_files = getdtablesize();
> +		for (i = 0; i<  max_files; i++) {
> +			fd = open(fname, O_CREAT | O_RDONLY, 0444);
> +			if (fd == -1)
> +				break;
>   		}
> -		waitpid(pid,&status, 0);
> -		if (WEXITSTATUS(status) == 0)
> -			tst_resm(TPASS, "block 1 PASSED");
> -		else
> -			tst_resm(TFAIL, "block 1 FAILED");
> +		TST_EXP_FAIL2(fcntl(1, F_DUPFD, 1), EMFILE,
> +		"fcntl() got EMFILE");
>   	}
> -	cleanup();
> -	tst_exit();
> +	tst_reap_children();
> +
>   }
>
> -void setup(void)
> +static void cleanup(void)
>   {
> -	tst_sig(FORK, DEF_HANDLER, cleanup);
> -
> -	TEST_PAUSE;
> +	if (fd>  -1)
> +		SAFE_CLOSE(fd);
>
> -	sprintf(fname, "fcnlt12.%d", getpid());
> -	tst_tmpdir();
> +	SAFE_UNLINK(fname);
>   }
>
> -void cleanup(void)
> -{
> -	unlink(fname);
> -	tst_rmdir();
> -}
> +static struct tst_test test = {
> +	.forks_child = 1,
> +	.needs_tmpdir = 1,
> +	.cleanup = cleanup,
> +	.test_all = verify_fcntl,
> +};