103 lines
2.4 KiB
C
103 lines
2.4 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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*
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* DESCRIPTION
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* hugeshmget02 - check for ENOENT, EEXIST and EINVAL errors
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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 <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 int shm_nonexistent_key = -1;
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static key_t shmkey2;
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static struct tcase {
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int *skey;
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int size_coe;
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int flags;
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int error;
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} tcases[] = {
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/* EINVAL - size is 0 */
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{&shmkey2, 0, SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW, EINVAL},
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/* EINVAL - size is larger than created segment */
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{&shmkey, 2, SHM_HUGETLB | SHM_RW, EINVAL},
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/* EEXIST - the segment exists and IPC_CREAT | IPC_EXCL is given */
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{&shmkey, 1, SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW, EEXIST},
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/* ENOENT - no segment exists for the key and IPC_CREAT is not given */
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/* use shm_nonexistend_key (-1) as the key */
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{&shm_nonexistent_key, 1, SHM_HUGETLB | SHM_RW, ENOENT}
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};
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static void test_hugeshmget(unsigned int i)
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{
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int shm_id_2 = -1;
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if (*tcases[i].skey == -1) {
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shm_id_2 = shmget(*(tcases[i].skey), 0, 0);
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if (shm_id_2 != -1)
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shmctl(shm_id_2, IPC_RMID, NULL);
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}
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TEST(shmget(*(tcases[i].skey), tcases[i].size_coe * shm_size,
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tcases[i].flags));
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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 != tcases[i].error) {
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tst_res(TFAIL | TTERRNO,
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"shmget failed unexpectedly, expected %s",
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tst_strerrno(tcases[i].error));
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return;
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}
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tst_res(TPASS | TTERRNO, "shmget failed as expected");
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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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shmkey2 = shmkey + 1;
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shm_id_1 = shmget(shmkey, shm_size,
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SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW);
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if (shm_id_1 == -1)
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tst_brk(TBROK | TERRNO, "shmget #setup");
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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 = test_hugeshmget,
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.tcnt = ARRAY_SIZE(tcases),
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.request_hugepages = 128,
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};
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