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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
* Copyright (c) 2020 Petr Vorel <petr.vorel@gmail.com>
* 07/2001 Ported by Wayne Boyer
* 04/2002 Fixes by wjhuie
*
* Testcase to check the errnos set by the ioctl(2) system call.
*
* ALGORITHM
* 1. EBADF: Pass an invalid fd to ioctl(fd, ..) and expect EBADF.
* 2. EFAULT: Pass an invalid address of arg in ioctl(fd, .., arg)
* 3. EINVAL: Pass invalid cmd in ioctl(fd, cmd, arg)
* 4. ENOTTY: Pass an non-streams fd in ioctl(fd, cmd, arg)
* 5. EFAULT: Pass a NULL address for termio
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <termios.h>
#include "tst_test.h"
#include "lapi/ioctl.h"
#define INVAL_IOCTL 9999999
static int fd, fd_file;
static int bfd = -1;
static struct termio termio;
static struct tcase {
int *fd;
int request;
struct termio *s_tio;
int error;
} tcases[] = {
/* file descriptor is invalid */
{&bfd, TCGETA, &termio, EBADF},
/* termio address is invalid */
{&fd, TCGETA, (struct termio *)-1, EFAULT},
/* command is invalid */
/* This errno value was changed from EINVAL to ENOTTY
* by kernel commit 07d106d0 and bbb63c51
*/
{&fd, INVAL_IOCTL, &termio, ENOTTY},
/* file descriptor is for a regular file */
{&fd_file, TCGETA, &termio, ENOTTY},
/* termio is NULL */
{&fd, TCGETA, NULL, EFAULT}
};
static char *device;
static void verify_ioctl(unsigned int i)
{
TEST(ioctl(*(tcases[i].fd), tcases[i].request, tcases[i].s_tio));
if (TST_RET != -1) {
tst_res(TFAIL, "call succeeded unexpectedly");
return;
}
if (TST_ERR != tcases[i].error) {
tst_res(TFAIL | TTERRNO,
"failed unexpectedly; expected %s",
tst_strerrno(tcases[i].error));
return;
}
tst_res(TPASS | TTERRNO, "failed as expected");
}
static void setup(void)
{
unsigned int i;
if (!device)
tst_brk(TBROK, "You must specify a tty device with -D option");
fd = SAFE_OPEN(device, O_RDWR, 0777);
fd_file = SAFE_OPEN("x", O_CREAT, 0777);
}
static void cleanup(void)
{
if (fd > 0)
SAFE_CLOSE(fd);
if (fd_file > 0)
SAFE_CLOSE(fd_file);
}
static struct tst_test test = {
.needs_root = 1,
.needs_tmpdir = 1,
.setup = setup,
.cleanup = cleanup,
.test = verify_ioctl,
.tcnt = ARRAY_SIZE(tcases),
.options = (struct tst_option[]) {
{"D:", &device, "Tty device. For example, /dev/tty[0-9]"},
{}
}
};
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