114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
/*
|
|
* Copyright (c) International Business Machines Corp., 2004
|
|
* Copyright (c) Linux Test Project, 2004-2017
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
|
|
* the GNU General Public License for more details.
|
|
*/
|
|
|
|
/*
|
|
* DESCRIPTION
|
|
* hugeshmget05 - test for EACCES error
|
|
*
|
|
* HISTORY
|
|
* 03/2001 - Written by Wayne Boyer
|
|
* 04/2004 - Updated by Robbie Williamson
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <limits.h>
|
|
#include "hugetlb.h"
|
|
#include "hugetlb.h"
|
|
|
|
static size_t shm_size;
|
|
static int shm_id_1 = -1;
|
|
static uid_t ltp_uid;
|
|
static char *ltp_user = "nobody";
|
|
|
|
static long hugepages = 128;
|
|
static struct tst_option options[] = {
|
|
{"s:", &nr_opt, "-s num Set the number of the been allocated hugepages"},
|
|
{NULL, NULL, NULL}
|
|
};
|
|
|
|
static void do_child(void);
|
|
|
|
static void test_hugeshmget(void)
|
|
{
|
|
pid_t pid;
|
|
int status;
|
|
|
|
switch (pid = fork()) {
|
|
case -1:
|
|
tst_brk(TBROK | TERRNO, "fork");
|
|
case 0:
|
|
/* set the user ID of the child to the non root user */
|
|
SAFE_SETUID(ltp_uid);
|
|
do_child();
|
|
exit(0);
|
|
default:
|
|
/* wait for the child to return */
|
|
SAFE_WAITPID(pid, &status, 0);
|
|
}
|
|
}
|
|
|
|
static void do_child(void)
|
|
{
|
|
TEST(shmget(shmkey, shm_size, SHM_HUGETLB | SHM_RW));
|
|
if (TST_RET != -1) {
|
|
tst_res(TFAIL, "shmget succeeded unexpectedly");
|
|
return;
|
|
}
|
|
if (TST_ERR == EACCES)
|
|
tst_res(TPASS | TTERRNO, "shmget failed as expected");
|
|
else
|
|
tst_res(TFAIL | TTERRNO, "shmget failed unexpectedly "
|
|
"- expect errno=EACCES, got");
|
|
}
|
|
|
|
void setup(void)
|
|
{
|
|
long hpage_size;
|
|
|
|
save_nr_hugepages();
|
|
if (nr_opt)
|
|
hugepages = SAFE_STRTOL(nr_opt, 0, LONG_MAX);
|
|
|
|
limit_hugepages(&hugepages);
|
|
set_sys_tune("nr_hugepages", hugepages, 1);
|
|
hpage_size = SAFE_READ_MEMINFO("Hugepagesize:") * 1024;
|
|
|
|
shm_size = hpage_size * hugepages / 2;
|
|
update_shm_size(&shm_size);
|
|
shmkey = getipckey();
|
|
shm_id_1 = shmget(shmkey, shm_size,
|
|
SHM_HUGETLB | SHM_RW | IPC_CREAT | IPC_EXCL);
|
|
if (shm_id_1 == -1)
|
|
tst_brk(TBROK | TERRNO, "shmget #setup");
|
|
|
|
/* get the userid for a non-root user */
|
|
ltp_uid = getuserid(ltp_user);
|
|
}
|
|
|
|
void cleanup(void)
|
|
{
|
|
rm_shm(shm_id_1);
|
|
restore_nr_hugepages();
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.needs_root = 1,
|
|
.options = options,
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test_all = test_hugeshmget,
|
|
};
|