74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
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// 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 Wayne Boyer
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* Adapted by Dustin Kirkland <k1rkland@us.ibm.com>
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* Adapted by Zhao gongyi <zhaogongyi@huawei.com>
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*/
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/*\
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* [Description]
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*
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* Testcase for setfsgid() syscall to check that
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*
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* - privileged user can change a filesystem group ID different from saved
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* value of previous setfsgid() call
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* - unprivileged user cannot change it
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*/
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#include <pwd.h>
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#include "tst_test.h"
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#include "compat_tst_16.h"
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static gid_t gid;
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static gid_t pre_gid;
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static const char nobody_uid[] = "nobody";
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static struct passwd *ltpuser;
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static void run(unsigned int i)
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{
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int cnt;
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GID16_CHECK(gid, setfsgid);
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if (i == 0) {
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ltpuser = SAFE_GETPWNAM(nobody_uid);
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SAFE_SETEUID(ltpuser->pw_uid);
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}
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/*
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* Run SETFSGID() twice to check the second running have changed
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* the gid for privileged user, and have not changed the gid
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* for unprivileged user.
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*/
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for (cnt = 0; cnt < 2; cnt++) {
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TEST(SETFSGID(gid));
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if ((long)pre_gid != TST_RET) {
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tst_res(TFAIL, "EUID %d: setfsgid() returned %ld", geteuid(), TST_RET);
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} else {
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tst_res(TPASS, "EUID %d: setfsgid() returned expected value: %ld",
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geteuid(), TST_RET);
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if (i == 1) {
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pre_gid = gid;
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gid++;
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}
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}
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}
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if (i == 0)
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SAFE_SETEUID(0);
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}
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static void setup(void)
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{
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pre_gid = 0;
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gid = 1;
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}
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static struct tst_test test = {
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.needs_root = 1,
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.setup = setup,
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.test = run,
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.tcnt = 2,
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};
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