55 lines
1.0 KiB
C
55 lines
1.0 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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*/
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/* DESCRIPTION
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* This test will switch to nobody user for correct error code collection.
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* Verify setuid returns errno EPERM when it switches to root_user.
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*/
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#include <errno.h>
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#include <pwd.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "tst_test.h"
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#include "compat_tst_16.h"
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#define ROOT_USER 0
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static void verify_setuid(void)
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{
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TEST(SETUID(ROOT_USER));
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if (TST_RET != -1) {
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tst_res(TFAIL | TTERRNO, "setuid() succeeded unexpectedly");
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return;
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}
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if (TST_ERR == EPERM)
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tst_res(TPASS, "setuid() returned errno EPERM");
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else
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tst_res(TFAIL | TTERRNO, "setuid() returned unexpected errno");
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}
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static void setup(void)
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{
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struct passwd *pw;
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uid_t uid;
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pw = SAFE_GETPWNAM("nobody");
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uid = pw->pw_uid;
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if (SETUID(uid) == -1) {
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tst_brk(TBROK,
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"setuid() failed to set the effective uid to %d", uid);
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}
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umask(0);
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}
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static struct tst_test test = {
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.setup = setup,
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.needs_root = 1,
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.test_all = verify_setuid,
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};
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