55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
|
|
* Author: Saji Kumar.V.R <saji.kumar@wipro.com>
|
|
*
|
|
* Tests whether we can use capset() to modify the capabilities of a thread
|
|
* other than itself. Now, most linux distributions with kernel supporting
|
|
* VFS capabilities, this should be never permitted.
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include "tst_test.h"
|
|
#include "lapi/syscalls.h"
|
|
#include <linux/capability.h>
|
|
|
|
static struct __user_cap_header_struct *header;
|
|
static struct __user_cap_data_struct *data;
|
|
static pid_t child_pid;
|
|
|
|
static void verify_capset(void)
|
|
{
|
|
child_pid = SAFE_FORK();
|
|
if (!child_pid)
|
|
pause();
|
|
|
|
tst_res(TINFO, "Test capset() for a different process");
|
|
|
|
header->pid = child_pid;
|
|
|
|
TST_EXP_FAIL(tst_syscall(__NR_capset, header, data), EPERM, "capset()");
|
|
|
|
SAFE_KILL(child_pid, SIGTERM);
|
|
SAFE_WAIT(NULL);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
header->version = 0x20080522;
|
|
TEST(tst_syscall(__NR_capget, header, data));
|
|
if (TST_RET == -1)
|
|
tst_brk(TBROK | TTERRNO, "capget data failed");
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.setup = setup,
|
|
.test_all = verify_capset,
|
|
.forks_child = 1,
|
|
.bufs = (struct tst_buffers []) {
|
|
{&header, .size = sizeof(*header)},
|
|
{&data, .size = 2 * sizeof(*data)},
|
|
{},
|
|
}
|
|
};
|