You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
3.0 KiB
120 lines
3.0 KiB
/*
|
|
* 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
|
|
* hugeshmget03 - test for ENOSPC error
|
|
*
|
|
* HISTORY
|
|
* 03/2001 - Written by Wayne Boyer
|
|
* 04/2004 - Updated by Robbie Williamson
|
|
*/
|
|
|
|
#include <limits.h>
|
|
#include "hugetlb.h"
|
|
#include "hugetlb.h"
|
|
|
|
/*
|
|
* The MAXIDS value is somewhat arbitrary and may need to be increased
|
|
* depending on the system being tested.
|
|
*/
|
|
#define MAXIDS 8192
|
|
#define PATH_SHMMNI "/proc/sys/kernel/shmmni"
|
|
|
|
static size_t shm_size;
|
|
static int shm_id_1 = -1;
|
|
static int num_shms;
|
|
static int shm_id_arr[MAXIDS];
|
|
|
|
static long hugepages = 128;
|
|
static long orig_shmmni = -1;
|
|
static struct tst_option options[] = {
|
|
{"s:", &nr_opt, "-s num Set the number of the been allocated hugepages"},
|
|
{NULL, NULL, NULL}
|
|
};
|
|
|
|
static void test_hugeshmget(void)
|
|
{
|
|
TEST(shmget(IPC_PRIVATE, shm_size,
|
|
SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW));
|
|
if (TST_RET != -1) {
|
|
tst_res(TFAIL, "shmget succeeded unexpectedly");
|
|
return;
|
|
}
|
|
if (TST_ERR == ENOSPC)
|
|
tst_res(TPASS | TTERRNO, "shmget failed as expected");
|
|
else
|
|
tst_res(TFAIL | TTERRNO, "shmget failed unexpectedly "
|
|
"- expect errno=ENOSPC, got");
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
long hpage_size;
|
|
|
|
save_nr_hugepages();
|
|
if (nr_opt)
|
|
hugepages = SAFE_STRTOL(nr_opt, 0, LONG_MAX);
|
|
|
|
SAFE_FILE_SCANF(PATH_SHMMNI, "%ld", &orig_shmmni);
|
|
|
|
limit_hugepages(&hugepages);
|
|
set_sys_tune("nr_hugepages", hugepages, 1);
|
|
SAFE_FILE_PRINTF(PATH_SHMMNI, "%ld", hugepages / 2);
|
|
|
|
hpage_size = SAFE_READ_MEMINFO("Hugepagesize:") * 1024;
|
|
shm_size = hpage_size;
|
|
|
|
/*
|
|
* Use a while loop to create the maximum number of memory segments.
|
|
* If the loop exceeds MAXIDS, then break the test and cleanup.
|
|
*/
|
|
num_shms = 0;
|
|
shm_id_1 = shmget(IPC_PRIVATE, shm_size,
|
|
SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW);
|
|
while (shm_id_1 != -1) {
|
|
shm_id_arr[num_shms++] = shm_id_1;
|
|
if (num_shms == MAXIDS)
|
|
tst_brk(TBROK, "The maximum number of "
|
|
"shared memory ID's has been reached. "
|
|
"Please increase the MAXIDS value in "
|
|
"the test.");
|
|
shm_id_1 = shmget(IPC_PRIVATE, shm_size,
|
|
SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW);
|
|
}
|
|
if (errno != ENOSPC)
|
|
tst_brk(TBROK | TERRNO, "shmget #setup");
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_shms; i++)
|
|
rm_shm(shm_id_arr[i]);
|
|
|
|
if (orig_shmmni != -1)
|
|
FILE_PRINTF(PATH_SHMMNI, "%ld", orig_shmmni);
|
|
restore_nr_hugepages();
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.needs_root = 1,
|
|
.options = options,
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test_all = test_hugeshmget,
|
|
};
|