107 lines
2.1 KiB
C
107 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2020 Cyril Hrubis <chrubis@suse.cz>
|
|
*/
|
|
|
|
/*\
|
|
* [Description]
|
|
*
|
|
* Test for a SHM_SET.
|
|
*
|
|
* The test clears the group and others bits from the shm_perm.mode and checks
|
|
* the result as well as if the ctime was updated correctly.
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include <stdio.h>
|
|
#include "tst_test.h"
|
|
#include "tst_safe_sysv_ipc.h"
|
|
#include "libnewipc.h"
|
|
|
|
#define SHM_SIZE 2048
|
|
|
|
static int shm_id = -1;
|
|
|
|
static int test_ipc_set(struct shmid_ds *ds)
|
|
{
|
|
TEST(shmctl(shm_id, IPC_SET, ds));
|
|
|
|
if (TST_RET != 0) {
|
|
tst_res(TFAIL, "shmctl(%i, IPC_SET, ...)", shm_id);
|
|
return 1;
|
|
}
|
|
|
|
tst_res(TPASS, "shmctl(%i, IPC_SET, {shm_perm.mode=%04o})",
|
|
shm_id, ds->shm_perm.mode);
|
|
return 0;
|
|
}
|
|
|
|
static void check_mode(struct shmid_ds *ds, short exp_mode)
|
|
{
|
|
if (ds->shm_perm.mode == exp_mode) {
|
|
tst_res(TPASS, "shm_perm.mode=%04o", exp_mode);
|
|
return;
|
|
}
|
|
|
|
tst_res(TFAIL, "shm_perm.mode=%04o, expected %i",
|
|
ds->shm_perm.mode, exp_mode);
|
|
}
|
|
|
|
static void verify_shmset(void)
|
|
{
|
|
struct shmid_ds ds;
|
|
unsigned short old_mode;
|
|
time_t old_ctime;
|
|
|
|
SAFE_SHMCTL(shm_id, IPC_STAT, &ds);
|
|
|
|
old_mode = ds.shm_perm.mode;
|
|
old_ctime = ds.shm_ctime;
|
|
|
|
check_mode(&ds, 0666);
|
|
|
|
sleep(1);
|
|
|
|
ds.shm_perm.mode &= ~0066;
|
|
|
|
if (test_ipc_set(&ds))
|
|
return;
|
|
|
|
memset(&ds, 0, sizeof(ds));
|
|
SAFE_SHMCTL(shm_id, IPC_STAT, &ds);
|
|
check_mode(&ds, old_mode & ~0066);
|
|
|
|
if (ds.shm_ctime <= old_ctime || ds.shm_ctime > old_ctime + 10) {
|
|
tst_res(TFAIL, "shm_ctime not updated old %li new %li",
|
|
(long)old_ctime, (long)ds.shm_ctime);
|
|
} else {
|
|
tst_res(TPASS, "shm_ctime updated correctly diff=%li",
|
|
(long)(ds.shm_ctime - old_ctime));
|
|
}
|
|
|
|
ds.shm_perm.mode = old_mode;
|
|
if (test_ipc_set(&ds))
|
|
return;
|
|
|
|
memset(&ds, 0, sizeof(ds));
|
|
SAFE_SHMCTL(shm_id, IPC_STAT, &ds);
|
|
check_mode(&ds, old_mode & MODE_MASK);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
shm_id = SAFE_SHMGET(IPC_PRIVATE, SHM_SIZE, IPC_CREAT | 0666);
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
if (shm_id >= 0)
|
|
SAFE_SHMCTL(shm_id, IPC_RMID, NULL);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test_all = verify_shmset,
|
|
};
|