[LTP] [PATCH v2] syscalls/shmget*: Convert into new api
xuyang2018.jy@fujitsu.com
xuyang2018.jy@fujitsu.com
Thu Jun 24 05:46:42 CEST 2021
Hi Cyril
> Hi!
>> +
>> +static struct tcase {
>> + int *shmkey;
>> + size_t size;
>> int flags;
>> - int error;
>> -} TC[] = {
>> - /* EINVAL - size is 0 */
>> - {
>> - &shmkey2, 0, IPC_CREAT | IPC_EXCL | SHM_RW, EINVAL},
>> - /* EINVAL - size is negative */
>> -// {&shmkey2, -1, IPC_CREAT | IPC_EXCL | SHM_RW, EINVAL},
>> - /* EINVAL - size is larger than created segment */
>> - {
>> - &shmkey, SHM_SIZE * 2, SHM_RW, EINVAL},
>> - /* EEXIST - the segment exists and IPC_CREAT | IPC_EXCL is given */
>> - {
>> - &shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL | SHM_RW, EEXIST},
>> - /* ENOENT - no segment exists for the key and IPC_CREAT is not given */
>> - /* use shm_id_2 (-1) as the key */
>> - {
>> - &shm_nonexisting_key, SHM_SIZE, SHM_RW, ENOENT}
>> + /*1: nobody expected 0: root expected */
>> + int exp_user;
>> + int exp_err;
>> +} tcases[] = {
>> + {&shmkey1, SHM_SIZE, IPC_EXCL, 0, ENOENT},
>> + {&shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL, 0, EEXIST},
>> + {&shmkey1, SHMMIN - 1, IPC_CREAT | IPC_EXCL, 0, EINVAL},
>> + {&shmkey1, SHMMAX + 1, IPC_CREAT | IPC_EXCL, 0, EINVAL},
>> + {&shmkey, SHM_SIZE * 2, IPC_EXCL, 0, EINVAL},
>> + {&shmkey, SHM_SIZE, SHM_RD, 1, EACCES},
>> + {&shmkey1, SHM_SIZE, IPC_CREAT | SHM_HUGETLB, 1, EPERM}
>
> This case is a bit more complicated, on my test machine with
> nr_hugepages == 0 I get ENOMEM, since there are no hugepages allocated
> in the pool.
>
> When I add .request_hugepages = 1, the the tst_test structure, the
> hugepage pool size is increased by the test library and this request
> succeds and creates a SHM segment. See description below on how this has
> to be fixed.
>
>> };
>>
>> -int main(int ac, char **av)
>> +static void do_test(unsigned int n)
>> {
>> - int lc;
>> - int i;
>> -
>> - tst_parse_opts(ac, av, NULL, NULL);
>> -
>> - setup(); /* global setup */
>> -
>> - /* The following loop checks looping state if -i option given */
>> -
>> - for (lc = 0; TEST_LOOPING(lc); lc++) {
>> - /* reset tst_count in case we are looping */
>> - tst_count = 0;
>> + struct tcase *tc =&tcases[n];
>> + pid_t pid;
>>
>> - /* loop through the test cases */
>> - for (i = 0; i< TST_TOTAL; i++) {
>> - /*
>> - * Look for a failure ...
>> - */
>> -
>> - TEST(shmget(*(TC[i].skey), TC[i].size, TC[i].flags));
>> -
>> - if (TEST_RETURN != -1) {
>> - tst_resm(TFAIL, "call succeeded unexpectedly");
>> - continue;
>> - }
>> -
>> - if (TEST_ERRNO == TC[i].error) {
>> - tst_resm(TPASS, "expected failure - errno = "
>> - "%d : %s", TEST_ERRNO,
>> - strerror(TEST_ERRNO));
>> - } else {
>> - tst_resm(TFAIL, "call failed with an "
>> - "unexpected error - %d : %s",
>> - TEST_ERRNO, strerror(TEST_ERRNO));
>> - }
>> - }
>> + if (tc->exp_user == 0) {
>> + TST_EXP_FAIL(shmget(*tc->shmkey, tc->size, tc->flags), tc->exp_err,
>> + "shmget(%i, %lu, %i)", *tc->shmkey, tc->size, tc->flags);
>> + return;
>> }
>>
>> - cleanup();
>> -
>> - tst_exit();
>> + pid = SAFE_FORK();
>> + if (pid == 0) {
>> + SAFE_SETUID(pw->pw_uid);
>> + TST_EXP_FAIL(shmget(*tc->shmkey, tc->size, tc->flags), tc->exp_err,
>> + "shmget(%i, %lu, %i)", *tc->shmkey, tc->size, tc->flags);
>> + exit(0);
>> + }
>> + tst_reap_children();
>> }
>>
>> -/*
>> - * setup() - performs all the ONE TIME setup for this test.
>> - */
>> -void setup(void)
>> +static void setup(void)
>> {
>> + shmkey = GETIPCKEY();
>> + shmkey1 = GETIPCKEY();
>>
>> - tst_sig(NOFORK, DEF_HANDLER, cleanup);
>> -
>> - TEST_PAUSE;
>> -
>> - /*
>> - * Create a temporary directory and cd into it.
>> - * This helps to ensure that a unique msgkey is created.
>> - * See libs/libltpipc/libipc.c for more information.
>> - */
>> - tst_tmpdir();
>> -
>> - /* get an IPC resource key */
>> - shmkey = getipckey();
>> -
>> - /* Get an new IPC resource key. */
>> - shmkey2 = getipckey();
>> -
>> - if ((shm_id_1 = shmget(shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL |
>> - SHM_RW)) == -1) {
>> - tst_brkm(TBROK, cleanup, "couldn't create shared memory "
>> - "segment in setup()");
>> - }
>> -
>> - /* Make sure shm_nonexisting_key is a nonexisting key */
>> - while (1) {
>> - while (-1 != shmget(shm_nonexisting_key, 1, SHM_RD)) {
>> - shm_nonexisting_key--;
>> - }
>> - if (errno == ENOENT)
>> - break;
>> - }
>> + SAFE_FILE_PRINTF("/proc/sys/vm/hugetlb_shm_group", "1");
>
> There is no need to change the default hugetlb group, all that has to be
> done is to strip the user of all groups as well as there is absolutely
> no guarantee that group 1 will not be in the list of supplementary
> groups for a root users.
>
> So when we change uid we as well have to do:
>
> setgroups(0, NULL);
> SAFE_SETGID(pw->pw_gid);
> SAFE_SETUID(pw->pw_uid);
>
> This will strip the process of all additional permissions that may have
> been passed down by the process running under root.
>
> Also ideally we should add SAFE_SETGROUPS() to the test library in a
> separate patch so that we can make use of it here.
>
Yes, your are right. my origial way is to set 1 and it doesn't work on
your envrionment, so it doesn't meet EPERM error and meet the ENOMEM
error in kernel hugetlb_file_setup function.
I have check the kernel code, it used in_group_p function to check
whether have read access. So using setgroups(0, NULL) is right. Thanks.
Also, I add a ENOMEM test error test.
>> + shm_id = SAFE_SHMGET(shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL);
>> + pw = SAFE_GETPWNAM("nobody");
>> }
>>
>> -/*
>> - * cleanup() - performs all the ONE TIME cleanup for this test at completion
>> - * or premature exit.
>> - */
>> -void cleanup(void)
>> +static void cleanup(void)
>> {
>> - /* if it exists, remove the shared memory resource */
>> - rm_shm(shm_id_1);
>> -
>> - tst_rmdir();
>> -
>> + if (shm_id>= 0)
>> + SAFE_SHMCTL(shm_id, IPC_RMID, NULL);
>> }
>> +
>> +static struct tst_test test = {
>> + .needs_tmpdir = 1,
>> + .needs_root = 1,
>> + .forks_child = 1,
>> + .setup = setup,
>> + .cleanup = cleanup,
>> + .test = do_test,
>> + .tcnt = ARRAY_SIZE(tcases),
>> + .save_restore = (const char * const[]) {
>> + "?/proc/sys/vm/hugetlb_shm_group",
>> + NULL,
>> + }
>> +};
>> diff --git a/testcases/kernel/syscalls/ipc/shmget/shmget03.c b/testcases/kernel/syscalls/ipc/shmget/shmget03.c
>> index 96ebf3608..d2e850b2a 100644
>> --- a/testcases/kernel/syscalls/ipc/shmget/shmget03.c
>> +++ b/testcases/kernel/syscalls/ipc/shmget/shmget03.c
>> @@ -1,171 +1,75 @@
>> +// SPDX-License-Identifier: GPL-2.0-or-later
>> /*
>> - *
>> - * Copyright (c) International Business Machines Corp., 2001
>> - *
>> - * 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.
>> - *
>> - * You should have received a copy of the GNU General Public License
>> - * along with this program; if not, write to the Free Software
>> - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
>> + * Copyright (c) International Business Machines Corp., 2001
>> + * 03/2001 - Written by Wayne Boyer
>> */
>>
>> -/*
>> - * NAME
>> - * shmget03.c
>> +/*\
>> + * [Description]
>> *
>> - * DESCRIPTION
>> - * shmget03 - test for ENOSPC error
>> + * Test for ENOSPC error.
>> *
>> - * ALGORITHM
>> - * create shared memory segments in a loop until reaching the system limit
>> - * loop if that option was specified
>> - * attempt to create yet another shared memory segment
>> - * check the errno value
>> - * issue a PASS message if we get ENOSPC
>> - * otherwise, the tests fails
>> - * issue a FAIL message
>> - * call cleanup
>> - *
>> - * USAGE:<for command-line>
>> - * shmget03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
>> - * where, -c n : Run n copies concurrently.
>> - * -e : Turn on errno logging.
>> - * -i n : Execute test n times.
>> - * -I x : Execute test for x seconds.
>> - * -P x : Pause for x seconds between iterations.
>> - * -t : Turn on syscall timing.
>> - *
>> - * HISTORY
>> - * 03/2001 - Written by Wayne Boyer
>> - *
>> - * RESTRICTIONS
>> - * none
>> + * ENOSPC - All possible shared memory segments have been taken (SHMMNI).
>> */
>> -
>> -#include "ipcshm.h"
>> -
>> -char *TCID = "shmget03";
>> -int TST_TOTAL = 1;
>> -
>> -/*
>> - * The MAXIDS value is somewhat arbitrary and may need to be increased
>> - * depending on the system being tested.
>> - */
>> -#define MAXIDS 8192
>> -
>> -int shm_id_1 = -1;
>> -int num_shms = 0;
>> -
>> -int shm_id_arr[MAXIDS];
>> -
>> -int main(int ac, char **av)
>> +#include<errno.h>
>> +#include<sys/types.h>
>> +#include<sys/ipc.h>
>> +#include<stdlib.h>
>> +#include<pwd.h>
>> +#include<sys/shm.h>
>> +#include "tst_test.h"
>> +#include "tst_safe_sysv_ipc.h"
>> +#include "libnewipc.h"
>> +
>> +static int *queues;
>> +static int maxshms;
>> +static key_t shmkey;
>> +
>> +static void verify_shmget(void)
>> {
>> - int lc;
>> -
>> - tst_parse_opts(ac, av, NULL, NULL);
>> -
>> - setup(); /* global setup */
>> -
>> - /* The following loop checks looping state if -i option given */
>> -
>> - for (lc = 0; TEST_LOOPING(lc); lc++) {
>> - /* reset tst_count in case we are looping */
>> - tst_count = 0;
>> -
>> - /*
>> - * use the TEST() macro to make the call
>> - */
>> -
>> - TEST(shmget(IPC_PRIVATE, SHM_SIZE, IPC_CREAT | IPC_EXCL
>> - | SHM_RW));
>> -
>> - if (TEST_RETURN != -1) {
>> - tst_resm(TFAIL, "call succeeded when error expected");
>> - continue;
>> - }
>> -
>> - switch (TEST_ERRNO) {
>> - case ENOSPC:
>> - tst_resm(TPASS, "expected failure - errno = "
>> - "%d : %s", TEST_ERRNO, strerror(TEST_ERRNO));
>> - break;
>> - default:
>> - tst_resm(TFAIL, "call failed with an "
>> - "unexpected error - %d : %s",
>> - TEST_ERRNO, strerror(TEST_ERRNO));
>> - break;
>> - }
>> - }
>> -
>> - cleanup();
>> -
>> - tst_exit();
>> + TST_EXP_FAIL(shmget(shmkey + maxshms, SHM_SIZE, IPC_CREAT | IPC_EXCL | SHM_RW), ENOSPC,
>> + "shmget(%i, %i, %i)", shmkey + maxshms, SHM_SIZE, IPC_CREAT | IPC_EXCL | SHM_RW);
>> }
>>
>> -/*
>> - * setup() - performs all the ONE TIME setup for this test.
>> - */
>> -void setup(void)
>> +static void setup(void)
>> {
>> + int res, num;
>>
>> - tst_sig(NOFORK, DEF_HANDLER, cleanup);
>> + shmkey = GETIPCKEY();
>>
>> - TEST_PAUSE;
>> + SAFE_FILE_SCANF("/proc/sys/kernel/shmmni", "%i",&maxshms);
>>
>> - /*
>> - * Create a temporary directory and cd into it.
>> - * This helps to ensure that a unique msgkey is created.
>> - * See libs/libltpipc/libipc.c for more information.
>> - */
>> - tst_tmpdir();
>> -
>> - /* get an IPC resource key */
>> - shmkey = getipckey();
>> -
>> - /*
>> - * Use a while loop to create the maximum number of memory segments.
>> - * If the loop exceeds MAXIDS, then break the test and cleanup.
>> - */
>> - while ((shm_id_1 = shmget(IPC_PRIVATE, SHM_SIZE, IPC_CREAT |
>> - IPC_EXCL | SHM_RW)) != -1) {
>> - shm_id_arr[num_shms++] = shm_id_1;
>> - if (num_shms == MAXIDS) {
>> - tst_brkm(TBROK, cleanup, "The maximum number of shared "
>> - "memory ID's has been\n\t reached. Please "
>> - "increase the MAXIDS value in the test.");
>> - }
>> - }
>> -
>> - /*
>> - * If the errno is other than ENOSPC, then something else is wrong.
>> - */
>> - if (errno != ENOSPC) {
>> - tst_resm(TINFO, "errno = %d : %s", errno, strerror(errno));
>> - tst_brkm(TBROK, cleanup, "Didn't get ENOSPC in test setup");
>> + queues = SAFE_MALLOC(maxshms * sizeof(int));
>> + for (num = 0; num< maxshms; num++) {
>> + queues[num] = -1;
>> + res = shmget(shmkey + num, SHM_SIZE, IPC_CREAT | IPC_EXCL | SHM_RW);
>> + if (res != -1)
>> + queues[num] = res;
>> + else
>> + tst_brk(TBROK | TERRNO, "shmget failed unexpectedly");
>> }
>> + tst_res(TINFO, "The maximum number of memory segments (%d) has been reached",
>> + maxshms);
>> }
>>
>> -/*
>> - * cleanup() - performs all the ONE TIME cleanup for this test at completion
>> - * or premature exit.
>> - */
>> -void cleanup(void)
>> +static void cleanup(void)
>> {
>> - int i;
>> + int num;
>>
>> - /* remove the shared memory resources that were created */
>> - for (i = 0; i< num_shms; i++) {
>> - rm_shm(shm_id_arr[i]);
>> - }
>> + if (!queues)
>> + return;
>>
>> - tst_rmdir();
>> + for (num = 0; num< maxshms; num++) {
>> + if (queues[num] != -1)
>> + SAFE_SHMCTL(queues[num], IPC_RMID, NULL);
>> + }
>
> This is still not correct, we will pass random data to the SAFE_SHMCTL()
> in a case shmget() had failed before the loop in setup reached maximal value.
>
> We have to maintain a global variable with the number of the ids in the
> queues[] array and only remove these that have been created.
Yes, I have added a global count.
Best Regards
Yang Xu
>
> for (i = 0; i< maxshms; i++) {
> res = shmget(...);
>
> if (res == -1)
> tst_brk(TBROK...);
>
> queues[queue_cnt++] = res;
> }
>
>
>
> for (i = 0; i< queue_cnt; i++)
> SAFE_SHMCTL(queues[i], IPC_RMID);
>
>> + free(queues);
>> }
>> +
>> +static struct tst_test test = {
>> + .needs_tmpdir = 1,
>> + .setup = setup,
>> + .cleanup = cleanup,
>> + .test_all = verify_shmget,
>> +};
>> diff --git a/testcases/kernel/syscalls/ipc/shmget/shmget04.c b/testcases/kernel/syscalls/ipc/shmget/shmget04.c
>> index 60a263c77..d92dfe635 100644
>> --- a/testcases/kernel/syscalls/ipc/shmget/shmget04.c
>> +++ b/testcases/kernel/syscalls/ipc/shmget/shmget04.c
>> @@ -1,153 +1,71 @@
>> +// SPDX-License-Identifier: GPL-2.0-or-later
>> /*
>> - *
>> - * Copyright (c) International Business Machines Corp., 2001
>> - *
>> - * 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.
>> - *
>> - * You should have received a copy of the GNU General Public License
>> - * along with this program; if not, write to the Free Software
>> - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
>> + * Copyright (c) International Business Machines Corp., 2001
>> + * 03/2001 - Written by Wayne Boyer
>> */
>>
>> -/*
>> - * NAME
>> - * shmget04.c
>> - *
>> - * DESCRIPTION
>> - * shmget04 - test for EACCES error
>> - *
>> - * ALGORITHM
>> - * create a shared memory segment without read or write permissions
>> - * loop if that option was specified
>> - * call shmget() with SHM_RW flag using TEST() macro
>> - * check the errno value
>> - * issue a PASS message if we get EACCES
>> - * otherwise, the tests fails
>> - * issue a FAIL message
>> - * call cleanup
>> - *
>> - * USAGE:<for command-line>
>> - * shmget04 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
>> - * where, -c n : Run n copies concurrently.
>> - * -e : Turn on errno logging.
>> - * -i n : Execute test n times.
>> - * -I x : Execute test for x seconds.
>> - * -P x : Pause for x seconds between iterations.
>> - * -t : Turn on syscall timing.
>> +/*\
>> + * [Description]
>> *
>> - * HISTORY
>> - * 03/2001 - Written by Wayne Boyer
>> + * Test for EACCES error.
>> *
>> - * RESTRICTIONS
>> - * none
>> + * Create a shared memory segment without read or write permissions under
>> + * unpriviledged user and call shmget() with SHM_RD/SHM_WR/SHM_RW flag to
>> + * trigger EACCES error.
>> */
>> +#include<errno.h>
>> +#include<sys/types.h>
>> +#include<sys/ipc.h>
>> +#include<stdlib.h>
>> #include<pwd.h>
>> -#include "ipcshm.h"
>> -
>> -char *TCID = "shmget04";
>> -int TST_TOTAL = 1;
>> -
>> -char nobody_uid[] = "nobody";
>> -struct passwd *ltpuser;
>> -
>> -int shm_id_1 = -1;
>> -
>> -int main(int ac, char **av)
>> +#include<sys/shm.h>
>> +#include "tst_safe_sysv_ipc.h"
>> +#include "tst_test.h"
>> +#include "libnewipc.h"
>> +#include "lapi/shm.h"
>> +
>> +static int shm_id = -1;
>> +static key_t shmkey;
>> +static struct tcase {
>> + char *message;
>> + int flag;
>> +} tcases[] = {
>> + {"Testing SHM_RD flag", SHM_RD},
>> + {"Testing SHM_WR flag", SHM_WR},
>> + {"Testing SHM_RW flag", SHM_RW},
>> +};
>> +
>> +static void verify_shmget(unsigned int n)
>> {
>> - int lc;
>> -
>> - tst_parse_opts(ac, av, NULL, NULL);
>> -
>> - setup(); /* global setup */
>> -
>> - /* The following loop checks looping state if -i option given */
>> -
>> - for (lc = 0; TEST_LOOPING(lc); lc++) {
>> - /* reset tst_count in case we are looping */
>> - tst_count = 0;
>> + struct tcase *tc =&tcases[n];
>>
>> - /*
>> - * use the TEST() macro to make the call
>> - */
>> -
>> - TEST(shmget(shmkey, SHM_SIZE, SHM_RW));
>> -
>> - if (TEST_RETURN != -1) {
>> - tst_resm(TFAIL, "call succeeded when error expected");
>> - continue;
>> - }
>> -
>> - switch (TEST_ERRNO) {
>> - case EACCES:
>> - tst_resm(TPASS, "expected failure - errno = "
>> - "%d : %s", TEST_ERRNO, strerror(TEST_ERRNO));
>> - break;
>> - default:
>> - tst_resm(TFAIL, "call failed with an "
>> - "unexpected error - %d : %s",
>> - TEST_ERRNO, strerror(TEST_ERRNO));
>> - break;
>> - }
>> - }
>> -
>> - cleanup();
>> -
>> - tst_exit();
>> + tst_res(TINFO, "%s", tc->message);
>> + TST_EXP_FAIL(shmget(shmkey, SHM_SIZE, tc->flag), EACCES, "shmget(%i, %i, %i)",
>> + shmkey, SHM_SIZE, tc->flag);
>> }
>>
>> -/*
>> - * setup() - performs all the ONE TIME setup for this test.
>> - */
>> -void setup(void)
>> +static void setup(void)
>> {
>> - tst_require_root();
>> -
>> - tst_sig(NOFORK, DEF_HANDLER, cleanup);
>> + struct passwd *pw;
>>
>> - TEST_PAUSE;
>> + pw = SAFE_GETPWNAM("nobody");
>> + SAFE_SETUID(pw->pw_uid);
>> + shmkey = GETIPCKEY();
>>
>> - /* Switch to nobody user for correct error code collection */
>> - ltpuser = getpwnam(nobody_uid);
>> - if (setuid(ltpuser->pw_uid) == -1) {
>> - tst_resm(TINFO, "setuid failed to "
>> - "to set the effective uid to %d", ltpuser->pw_uid);
>> - perror("setuid");
>> - }
>> -
>> - /*
>> - * Create a temporary directory and cd into it.
>> - * This helps to ensure that a unique msgkey is created.
>> - * See libs/libltpipc/libipc.c for more information.
>> - */
>> - tst_tmpdir();
>> -
>> - /* get an IPC resource key */
>> - shmkey = getipckey();
>> -
>> - /* create a shared memory segment without read or access permissions */
>> - if ((shm_id_1 = shmget(shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL)) == -1) {
>> - tst_brkm(TBROK, cleanup, "Failed to create shared memory "
>> - "segment in setup");
>> - }
>> + shm_id = SAFE_SHMGET(shmkey, SHM_SIZE, IPC_CREAT | IPC_EXCL);
>> }
>>
>> -/*
>> - * cleanup() - performs all the ONE TIME cleanup for this test at completion
>> - * or premature exit.
>> - */
>> -void cleanup(void)
>> +static void cleanup(void)
>> {
>> - /* if it exists, remove the shared memory resource */
>> - rm_shm(shm_id_1);
>> -
>> - tst_rmdir();
>> -
>> + if (shm_id>= 0)
>> + SAFE_SHMCTL(shm_id, IPC_RMID, NULL);
>> }
>> +
>> +static struct tst_test test = {
>> + .needs_tmpdir = 1,
>> + .needs_root = 1,
>> + .setup = setup,
>> + .cleanup = cleanup,
>> + .test = verify_shmget,
>> + .tcnt = ARRAY_SIZE(tcases),
>> +};
>
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