115 lines
2.8 KiB
C
115 lines
2.8 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, 2004-2020
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*/
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/*
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* DESCRIPTION
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* hugeshmctl02 - check for EACCES, EFAULT and EINVAL errors
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*
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* ALGORITHM
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* create a large shared memory segment without read or write permissions
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* create a large shared memory segment with read & write permissions
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* loop if that option was specified
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* call shmctl() using five different invalid cases
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* check the errno value
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* issue a PASS message if we get EACCES, EFAULT or EINVAL
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* otherwise, the tests fails
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* issue a FAIL message
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* call cleanup
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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 <pwd.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 int shm_id_2 = -1;
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static int shm_id_3 = -1;
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static struct shmid_ds buf;
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struct tcase {
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int *shmid;
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int cmd;
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struct shmid_ds *sbuf;
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int error;
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} tcases[] = {
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/* EFAULT - IPC_SET & buf isn't valid */
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{&shm_id_2, IPC_SET, (struct shmid_ds *)-1, EFAULT},
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/* EFAULT - IPC_STAT & buf isn't valid */
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{&shm_id_2, IPC_STAT, (struct shmid_ds *)-1, EFAULT},
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/* EINVAL - the shmid is not valid */
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{&shm_id_3, IPC_STAT, &buf, EINVAL},
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/* EINVAL - the command is not valid */
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{&shm_id_2, -1, &buf, EINVAL},
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};
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static void test_hugeshmctl(unsigned int i)
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{
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TEST(shmctl(*(tcases[i].shmid), tcases[i].cmd, tcases[i].sbuf));
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if (TST_RET != -1) {
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tst_res(TFAIL, "shmctl 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(TPASS | TTERRNO, "shmctl failed as expected");
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return;
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}
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tst_res(TFAIL | TTERRNO,
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"shmctl failed unexpectedly - expect errno = %d, got",
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tcases[i].error);
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}
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static 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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/* create a shared memory segment without read or write permissions */
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shm_id_1 = shmget(shmkey, shm_size, SHM_HUGETLB | IPC_CREAT | IPC_EXCL);
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if (shm_id_1 == -1)
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tst_brk(TBROK | TERRNO, "shmget #1");
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/* create a shared memory segment with read and write permissions */
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shm_id_2 = shmget(shmkey + 1, shm_size,
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SHM_HUGETLB | IPC_CREAT | IPC_EXCL | SHM_RW);
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if (shm_id_2 == -1)
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tst_brk(TBROK | TERRNO, "shmget #2");
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}
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static void cleanup(void)
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{
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rm_shm(shm_id_1);
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rm_shm(shm_id_2);
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}
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static struct tst_test test = {
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.test = test_hugeshmctl,
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.tcnt = ARRAY_SIZE(tcases),
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.needs_root = 1,
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.needs_tmpdir = 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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.request_hugepages = 128,
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};
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