95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* Ported by John George
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*/
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/*
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* Test setregid() when executed by root.
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*/
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#include "tst_test.h"
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#include "compat_tst_16.h"
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static gid_t neg_one = -1;
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static struct group nobody_gr, daemon_gr, root_gr, bin_gr;
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/*
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* The following structure contains all test data. Each structure in the array
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* is used for a separate test. The tests are executed in the for loop below.
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*/
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struct test_data_t {
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gid_t *real_gid;
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gid_t *eff_gid;
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struct group *exp_real_usr;
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struct group *exp_eff_usr;
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const char *test_msg;
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} test_data[] = {
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{
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&root_gr.gr_gid, &root_gr.gr_gid, &root_gr, &root_gr,
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"After setregid(root, root),"}, {
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&nobody_gr.gr_gid, &neg_one, &nobody_gr, &root_gr,
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"After setregid(nobody, -1)"}, {
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&root_gr.gr_gid, &neg_one, &root_gr, &root_gr,
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"After setregid(root,-1),"}, {
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&neg_one, &neg_one, &root_gr, &root_gr,
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"After setregid(-1, -1),"}, {
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&neg_one, &root_gr.gr_gid, &root_gr, &root_gr,
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"After setregid(-1, root)"}, {
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&root_gr.gr_gid, &neg_one, &root_gr, &root_gr,
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"After setregid(root, -1),"}, {
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&daemon_gr.gr_gid, &nobody_gr.gr_gid, &daemon_gr, &nobody_gr,
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"After setregid(daemon, nobody)"}, {
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&neg_one, &neg_one, &daemon_gr, &nobody_gr,
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"After setregid(-1, -1)"}, {
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&neg_one, &nobody_gr.gr_gid, &daemon_gr, &nobody_gr,
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"After setregid(-1, nobody)"}
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};
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static void gid_verify(struct group *rg, struct group *eg, const char *when)
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{
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if ((getgid() != rg->gr_gid) || (getegid() != eg->gr_gid)) {
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tst_res(TFAIL, "ERROR: %s real gid = %d; effective gid = %d",
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when, getgid(), getegid());
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tst_res(TINFO, "Expected: real gid = %d; effective gid = %d",
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rg->gr_gid, eg->gr_gid);
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} else {
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tst_res(TPASS,
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"real or effective gid was modified as expected");
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}
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}
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static void run(unsigned int i)
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{
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/* Set the real or effective group id */
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TEST(SETREGID(*test_data[i].real_gid, *test_data[i].eff_gid));
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if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "setregid(%d, %d) failed",
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*test_data[i].real_gid, *test_data[i].eff_gid);
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return;
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}
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gid_verify(test_data[i].exp_real_usr, test_data[i].exp_eff_usr,
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test_data[i].test_msg);
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}
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static void setup(void)
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{
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root_gr = *SAFE_GETGRNAM("root");
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nobody_gr = *SAFE_GETGRNAM_FALLBACK("nobody", "nogroup");
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daemon_gr = *SAFE_GETGRNAM("daemon");
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bin_gr = *SAFE_GETGRNAM("bin");
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(test_data),
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.needs_root = 1,
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.test = run,
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.setup = setup,
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};
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