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