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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) Bull S.A. 2001
* Copyright (c) International Business Machines Corp., 2001
* Copyright (c) Linux Test Project, 2003-2023
* 07/2001 Ported by Wayne Boyer
* 05/2002 Ported by Andre Merlier
*/
/*\
* [Description]
*
* Test for EINVAL, EPERM, EFAULT errors.
*
* - setgroups() fails with EINVAL if the size argument value is > NGROUPS.
*
* - setgroups() fails with EPERM if the calling process is not super-user.
*
* - setgroups() fails with EFAULT if the list has an invalid address.
*/
#include <pwd.h>
#include <stdlib.h>
#include "tst_test.h"
#include "compat_tst_16.h"
#define TESTUSER "nobody"
static GID_T *glist1, *glist2, *glist3;
static struct passwd *user_info;
static struct tcase {
int gsize;
GID_T **glist;
int exp_errno;
} tcases[] = {
{NGROUPS + 1, &glist1, EINVAL},
{1, &glist2, EPERM},
{NGROUPS, &glist3, EFAULT},
};
static void verify_setgroups(unsigned int i)
{
struct tcase *tc = &tcases[i];
if (tc->exp_errno == EPERM)
SAFE_SETEUID(user_info->pw_uid);
TST_EXP_FAIL(SETGROUPS(tc->gsize, *tc->glist), tc->exp_errno,
"setgroups(%d, groups_list)", tc->gsize);
if (tc->exp_errno == EPERM)
SAFE_SETEUID(0);
}
static void setup(void)
{
user_info = SAFE_GETPWNAM(TESTUSER);
glist2[0] = 42;
glist3 = tst_get_bad_addr(NULL);
}
static struct tst_test test = {
.test = verify_setgroups,
.tcnt = ARRAY_SIZE(tcases),
.bufs = (struct tst_buffers []) {
{&glist1, .size = sizeof(GID_T) * (NGROUPS + 1)},
{&glist2, .size = sizeof(GID_T)},
{&user_info, .size = sizeof(struct passwd)},
{},
},
.setup = setup,
.needs_root = 1,
};
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