105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* Copyright (c) International Business Machines Corp., 2001
|
||
|
|
* Ported by John George
|
||
|
|
* Copyright (C) 2021 SUSE LLC <mdoucha@suse.cz>
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*\
|
||
|
|
* [Description]
|
||
|
|
*
|
||
|
|
* Test setreuid() when executed by an unpriviledged user.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <pwd.h>
|
||
|
|
|
||
|
|
#include "tst_test.h"
|
||
|
|
#include "tst_uid.h"
|
||
|
|
#include "compat_tst_16.h"
|
||
|
|
|
||
|
|
static uid_t root_uid, nobody_uid, other_uid, neg_one = -1;
|
||
|
|
|
||
|
|
static struct test_data_t {
|
||
|
|
uid_t *real_uid;
|
||
|
|
uid_t *eff_uid;
|
||
|
|
int exp_ret;
|
||
|
|
uid_t *exp_real_uid;
|
||
|
|
uid_t *exp_eff_uid;
|
||
|
|
uid_t *exp_sav_uid;
|
||
|
|
const char *test_msg;
|
||
|
|
} test_data[] = {
|
||
|
|
{&nobody_uid, &nobody_uid, 0, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(nobody, nobody)"},
|
||
|
|
{&neg_one, &nobody_uid, 0, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(-1, nobody)"},
|
||
|
|
{&nobody_uid, &neg_one, 0, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(nobody, -1)"},
|
||
|
|
{&neg_one, &neg_one, 0, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(-1, -1)"},
|
||
|
|
{&neg_one, &root_uid, -1, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(-1, root)"},
|
||
|
|
{&root_uid, &neg_one, -1, &nobody_uid, &nobody_uid, &nobody_uid,
|
||
|
|
"setreuid(root, -1)"},
|
||
|
|
{&root_uid, &root_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(root, root)"},
|
||
|
|
{&root_uid, &nobody_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(root, nobody)"},
|
||
|
|
{&root_uid, &other_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(root, other)"},
|
||
|
|
{&other_uid, &root_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(other, root)"},
|
||
|
|
{&other_uid, &neg_one, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(other, -1)"},
|
||
|
|
{&other_uid, &other_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(other, other)"},
|
||
|
|
{&other_uid, &nobody_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(other, nobody)"},
|
||
|
|
{&nobody_uid, &other_uid, -1, &nobody_uid, &nobody_uid,
|
||
|
|
&nobody_uid, "setreuid(nobody, other)"},
|
||
|
|
};
|
||
|
|
|
||
|
|
static void setup(void)
|
||
|
|
{
|
||
|
|
uid_t test_users[2];
|
||
|
|
struct passwd *pw;
|
||
|
|
|
||
|
|
root_uid = getuid();
|
||
|
|
pw = SAFE_GETPWNAM("nobody");
|
||
|
|
nobody_uid = test_users[0] = pw->pw_uid;
|
||
|
|
tst_get_uids(test_users, 1, 2);
|
||
|
|
other_uid = test_users[1];
|
||
|
|
|
||
|
|
UID16_CHECK(root_uid, setreuid);
|
||
|
|
UID16_CHECK(nobody_uid, setreuid);
|
||
|
|
UID16_CHECK(other_uid, setreuid);
|
||
|
|
|
||
|
|
SAFE_SETUID(nobody_uid);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void run(unsigned int n)
|
||
|
|
{
|
||
|
|
const struct test_data_t *tc = test_data + n;
|
||
|
|
|
||
|
|
if (tc->exp_ret) {
|
||
|
|
TST_EXP_FAIL(SETREUID(*tc->real_uid, *tc->eff_uid), EPERM,
|
||
|
|
"%s", tc->test_msg);
|
||
|
|
} else {
|
||
|
|
TST_EXP_PASS(SETREUID(*tc->real_uid, *tc->eff_uid), "%s",
|
||
|
|
tc->test_msg);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!TST_PASS)
|
||
|
|
return;
|
||
|
|
|
||
|
|
tst_check_resuid(tc->test_msg, *tc->exp_real_uid, *tc->exp_eff_uid,
|
||
|
|
*tc->exp_sav_uid);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct tst_test test = {
|
||
|
|
.test = run,
|
||
|
|
.tcnt = ARRAY_SIZE(test_data),
|
||
|
|
.setup = setup,
|
||
|
|
.needs_root = 1,
|
||
|
|
};
|