97 lines
2.0 KiB
C
97 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., 2004
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* Copyright (c) Linux Test Project, 2004-2017
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*
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* DESCRIPTION
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* hugeshmget05 - test for EACCES error
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*
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* HISTORY
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* 03/2001 - Written by Wayne Boyer
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* 04/2004 - Updated by Robbie Williamson
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <limits.h>
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#include "hugetlb.h"
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static size_t shm_size;
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static int shm_id_1 = -1;
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static uid_t ltp_uid;
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static char *ltp_user = "nobody";
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static void do_child(void);
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static void test_hugeshmget(void)
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{
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pid_t pid;
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int status;
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switch (pid = fork()) {
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case -1:
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tst_brk(TBROK | TERRNO, "fork");
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break;
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case 0:
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/* set the user ID of the child to the non root user */
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SAFE_SETUID(ltp_uid);
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do_child();
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exit(0);
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default:
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/* wait for the child to return */
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SAFE_WAITPID(pid, &status, 0);
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}
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}
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static void do_child(void)
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{
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TEST(shmget(shmkey, shm_size, SHM_HUGETLB | SHM_RW));
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if (TST_RET != -1) {
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tst_res(TFAIL, "shmget succeeded unexpectedly");
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return;
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}
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if (TST_ERR == EACCES)
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tst_res(TPASS | TTERRNO, "shmget failed as expected");
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else
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tst_res(TFAIL | TTERRNO, "shmget failed unexpectedly "
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"- expect errno=EACCES, got");
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}
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void setup(void)
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{
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long hpage_size;
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if (tst_hugepages == 0)
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tst_brk(TCONF, "No enough hugepages for testing.");
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hpage_size = SAFE_READ_MEMINFO("Hugepagesize:") * 1024;
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shm_size = hpage_size * tst_hugepages / 2;
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update_shm_size(&shm_size);
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shmkey = getipckey();
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shm_id_1 = shmget(shmkey, shm_size,
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SHM_HUGETLB | SHM_RW | IPC_CREAT | IPC_EXCL);
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if (shm_id_1 == -1)
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tst_brk(TBROK | TERRNO, "shmget #setup");
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/* get the userid for a non-root user */
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ltp_uid = getuserid(ltp_user);
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}
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void cleanup(void)
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{
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rm_shm(shm_id_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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.options = (struct tst_option[]) {
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{"s:", &nr_opt, "-s num Set the number of the been allocated hugepages"},
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{}
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},
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.setup = setup,
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.cleanup = cleanup,
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.test_all = test_hugeshmget,
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.request_hugepages = 128,
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};
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