97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2009
|
|
* Veerendra C <vechandr@in.ibm.com>
|
|
* Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
|
|
*/
|
|
|
|
/*\
|
|
* [Description]
|
|
*
|
|
* Test SysV IPC semaphore usage between namespaces.
|
|
*
|
|
* [Algorithm]
|
|
*
|
|
* In parent process create a new semaphore with a specific key.
|
|
* In cloned process, try to access the created semaphore
|
|
*
|
|
* Test PASS if the semaphore is readable when flag is None.
|
|
* Test FAIL if the semaphore is readable when flag is Unshare or Clone.
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
|
|
#include <sys/wait.h>
|
|
#include <sys/msg.h>
|
|
#include <sys/types.h>
|
|
#include <sys/sem.h>
|
|
#include "tst_safe_sysv_ipc.h"
|
|
#include "tst_test.h"
|
|
#include "common.h"
|
|
|
|
#define MY_KEY 154326L
|
|
|
|
static char *str_op;
|
|
static int use_clone;
|
|
static int ipc_id = -1;
|
|
|
|
static int check_semaphore(LTP_ATTRIBUTE_UNUSED void *vtest)
|
|
{
|
|
int id;
|
|
|
|
id = semget(MY_KEY, 1, 0);
|
|
|
|
if (id < 0) {
|
|
if (use_clone == T_NONE)
|
|
tst_res(TFAIL, "Plain cloned process didn't find semaphore");
|
|
else
|
|
tst_res(TPASS, "%s: container didn't find semaphore", str_op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
tst_res(TINFO, "PID %d: fetched existing semaphore..id = %d", getpid(), id);
|
|
|
|
if (use_clone == T_NONE)
|
|
tst_res(TPASS, "Plain cloned process found semaphore inside container");
|
|
else
|
|
tst_res(TFAIL, "%s: Container init process found semaphore", str_op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void run(void)
|
|
{
|
|
clone_unshare_test(use_clone, CLONE_NEWIPC, check_semaphore, NULL);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
use_clone = get_clone_unshare_enum(str_op);
|
|
|
|
if (use_clone != T_NONE)
|
|
check_newipc();
|
|
|
|
ipc_id = SAFE_SEMGET(MY_KEY, 1, IPC_CREAT | IPC_EXCL | 0666);
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
if (ipc_id != -1) {
|
|
tst_res(TINFO, "Destroying semaphore");
|
|
SAFE_SEMCTL(ipc_id, IPC_RMID, 0);
|
|
}
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.test_all = run,
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.needs_root = 1,
|
|
.forks_child = 1,
|
|
.options = (struct tst_option[]) {
|
|
{ "m:", &str_op, "Test execution mode <clone|unshare|none>" },
|
|
{},
|
|
},
|
|
};
|