[v1,3/5] setregid02: Convert to newlib

Also changed some messaged to show errno as string.
Used SAVE_* functions for getgrnam(), getgrgid() and getpwnam()

Signed-off-by: Clemens Famulla-Conrad <cfamullaconrad@suse.de>
---
 testcases/kernel/syscalls/setregid/setregid02.c | 136 ++++++++----------------
 1 file changed, 42 insertions(+), 94 deletions(-)

Hello,

Clemens Famulla-Conrad <cfamullaconrad@suse.de> writes:

> Also changed some messaged to show errno as string.
> Used SAVE_* functions for getgrnam(), getgrgid() and getpwnam()
>
> Signed-off-by: Clemens Famulla-Conrad <cfamullaconrad@suse.de>
> ---
>  testcases/kernel/syscalls/setregid/setregid02.c | 136 ++++++++----------------
>  1 file changed, 42 insertions(+), 94 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/setregid/setregid02.c b/testcases/kernel/syscalls/setregid/setregid02.c
> index 21d1c823a..747515645 100644
> --- a/testcases/kernel/syscalls/setregid/setregid02.c
> +++ b/testcases/kernel/syscalls/setregid/setregid02.c
> @@ -1,21 +1,7 @@
> +// SPDX-License-Identifier: GPL-2.0
>  /*
> - *
>   *   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
> - *
>   *   Ported by John George
>   */
>
> @@ -29,13 +15,9 @@
>  #include <pwd.h>
>  #include <grp.h>
>  #include <stdlib.h>
> -#include <string.h>
>
> -#include "test.h"
> -#include "safe_macros.h"
> -#include "compat_16.h"
> -
> -TCID_DEFINE(setregid02);
> +#include "tst_test.h"
> +#include "compat_tst_16.h"
>
>  static gid_t neg_one = -1;
>
> @@ -48,14 +30,14 @@ static struct group ltpgroup, root, bin;
>   * is used for a separate test.  The tests are executed in the for loop below.
>   */
>
> -struct test_data_t {
> +static struct tcase {
>  	gid_t *real_gid;
>  	gid_t *eff_gid;
>  	int exp_errno;
>  	struct group *exp_real_usr;
>  	struct group *exp_eff_usr;
>  	char *test_msg;
> -} test_data[] = {
> +} tcases[] = {
>  	{
>  	&neg_one, &root.gr_gid, EPERM, &ltpgroup, &ltpgroup,
>  		    "After setregid(-1, root),"}, {
> @@ -71,113 +53,79 @@ struct test_data_t {
>  		    "After setregid(bin, root),"}
>  };
>
> -int TST_TOTAL = ARRAY_SIZE(test_data);
> -
> -static void setup(void);
>  static void gid_verify(struct group *ru, struct group *eu, char *when);
>  static struct group get_group_by_name(const char *name);
>  static struct group get_group_by_gid(gid_t gid);
>
> -int main(int ac, char **av)
> +static  void run(unsigned int n)
>  {
> -	int lc;
> -
> -	tst_parse_opts(ac, av, NULL, NULL);
> -
> -	setup();
> -
> -	for (lc = 0; TEST_LOOPING(lc); lc++) {
> -		int i;
> -
> -		tst_count = 0;
> -
> -		for (i = 0; i < TST_TOTAL; i++) {
> -			/* Set the real or effective group id */
> -			TEST(SETREGID(NULL, *test_data[i].real_gid,
> -				      *test_data[i].eff_gid));
> -
> -			if (TEST_RETURN == -1) {
> -				if (TEST_ERRNO == test_data[i].exp_errno) {
> -					tst_resm(TPASS, "setregid(%d, %d) "
> -						 "failed as expected.",
> -						 *test_data[i].real_gid,
> -						 *test_data[i].eff_gid);
> -				} else {
> -					tst_resm(TFAIL, "setregid(%d, %d) "
> -						 "failed (%d) but did not set the "
> -						 "expected errno (%d).",
> -						 *test_data[i].real_gid,
> -						 *test_data[i].eff_gid,
> -						 TEST_ERRNO,
> -						 test_data[i].exp_errno);
> -				}
> -			} else {
> -				tst_resm(TFAIL, "setregid(%d, %d) "
> -					 "did not fail (ret: %ld) as expected (ret: -1).",
> -					 *test_data[i].real_gid,
> -					 *test_data[i].eff_gid, TEST_RETURN);
> -			}
> -			gid_verify(test_data[i].exp_real_usr,
> -				   test_data[i].exp_eff_usr,
> -				   test_data[i].test_msg);
> +	struct tcase *tc = &tcases[n];
> +
> +	/* Set the real or effective group id */
> +	TEST(SETREGID(*tc->real_gid, *tc->eff_gid));
> +
> +	if (TST_RET == -1) {
> +		if (TST_ERR == tc->exp_errno) {

Only a minor nit, but please run check_patch from the kernel on this
(e.g. linux/scripts/checkpatch.pl --no-tree -f setregid02.c)

WARNING: Comparisons should place the constant on the right side of the test
#68: FILE: setregid02.c:68:
+               if (TST_ERR == tc->exp_errno) {

I don't think all the warnings are worth fixing, but this seems reasonable.

> +			tst_res(TPASS | TTERRNO, "setregid(%d, %d) failed "
> +				"as expected", *tc->real_gid, *tc->eff_gid);
> +		} else {
> +			tst_res(TFAIL | TTERRNO, "setregid(%d, %d) failed "
> +				"unexpectedly, expected %s", *tc->real_gid,
> +				*tc->eff_gid, tst_strerrno(tc->exp_errno));
>  		}
> +	} else {
> +		tst_res(TFAIL, "setregid(%d, %d) did not fail (ret: %ld) "
> +			"as expected (ret: -1).", *tc->real_gid,
> +			*tc->eff_gid, TST_RET);
>  	}
> -
> -	tst_exit();
> +	gid_verify(tc->exp_real_usr, tc->exp_eff_usr, tc->test_msg);
>  }
>
>  static void setup(void)
>  {
> -	tst_require_root();
> +	ltpuser = SAFE_GETPWNAM("nobody");
>
> -	tst_sig(FORK, DEF_HANDLER, NULL);
> -
> -	ltpuser = getpwnam("nobody");
> -	if (ltpuser == NULL)
> -		tst_brkm(TBROK, NULL, "getpwnam(\"nobody\") failed");
> -
> -	SAFE_SETGID(NULL, ltpuser->pw_gid);
> -	SAFE_SETUID(NULL, ltpuser->pw_uid);
> +	SAFE_SETGID(ltpuser->pw_gid);
> +	SAFE_SETUID(ltpuser->pw_uid);
>
>  	root = get_group_by_name("root");
>  	ltpgroup = get_group_by_gid(ltpuser->pw_gid);
>  	bin = get_group_by_name("bin");
> -
> -	TEST_PAUSE;
>  }
>
>  static struct group get_group_by_name(const char *name)
>  {
> -	struct group *ret = getgrnam(name);
> -
> -	if (ret == NULL)
> -		tst_brkm(TBROK|TERRNO, NULL, "getgrnam(\"%s\") failed", name);
> +	struct group *ret = SAFE_GETGRNAM(name);
>
> -	GID16_CHECK(ret->gr_gid, setregid, NULL);
> +	GID16_CHECK(ret->gr_gid, setregid);
>
>  	return *ret;
>  }
>
>  static struct group get_group_by_gid(gid_t gid)
>  {
> -	struct group *ret = getgrgid(gid);
> +	struct group *ret = SAFE_GETGRGID(gid);
>
> -	if (ret == NULL)
> -		tst_brkm(TBROK|TERRNO, NULL, "getgrgid(\"%d\") failed", gid);
> -
> -	GID16_CHECK(ret->gr_gid, setregid, NULL);
> +	GID16_CHECK(ret->gr_gid, setregid);
>
>  	return *ret;
>  }
> -
>  void gid_verify(struct group *rg, struct group *eg, char *when)
>  {
>  	if ((getgid() != rg->gr_gid) || (getegid() != eg->gr_gid)) {
> -		tst_resm(TFAIL, "ERROR: %s real gid = %d; effective gid = %d",
> +		tst_res(TFAIL, "ERROR: %s real gid = %d; effective gid = %d",
>  			 when, getgid(), getegid());
> -		tst_resm(TINFO, "Expected: real gid = %d; effective gid = %d",
> +		tst_res(TINFO, "Expected: real gid = %d; effective gid = %d",
>  			 rg->gr_gid, eg->gr_gid);
>  	} else {
> -		tst_resm(TPASS, "real or effective gid was modified as expected");
> +		tst_res(TPASS,
> +			"real or effective gid was modified as expected");
>  	}
>  }
> +
> +static struct tst_test test = {
> +	.tcnt = ARRAY_SIZE(tcases),
> +	.needs_root = 1,
> +	.test = run,
> +	.setup = setup,
> +};
> --
> 2.16.4


--
Thank you,
Richard.