114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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* Copyright (c) 2020 Petr Vorel <petr.vorel@gmail.com>
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* 07/2001 Ported by Wayne Boyer
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* 04/2002 Fixes by wjhuie
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*
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* Testcase to check the errnos set by the ioctl(2) system call.
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*
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* ALGORITHM
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* 1. EBADF: Pass an invalid fd to ioctl(fd, ..) and expect EBADF.
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* 2. EFAULT: Pass an invalid address of arg in ioctl(fd, .., arg)
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* 3. EINVAL: Pass invalid cmd in ioctl(fd, cmd, arg)
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* 4. ENOTTY: Pass an non-streams fd in ioctl(fd, cmd, arg)
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* 5. EFAULT: Pass a NULL address for termio
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <termios.h>
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#include "tst_test.h"
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#include "lapi/ioctl.h"
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#define INVAL_IOCTL 9999999
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static int fd, fd_file;
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static int bfd = -1;
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static struct termio termio;
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static struct tcase {
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int *fd;
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int request;
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struct termio *s_tio;
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int error;
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} tcases[] = {
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/* file descriptor is invalid */
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{&bfd, TCGETA, &termio, EBADF},
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/* termio address is invalid */
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{&fd, TCGETA, (struct termio *)-1, EFAULT},
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/* command is invalid */
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/* This errno value was changed from EINVAL to ENOTTY
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* by kernel commit 07d106d0 and bbb63c51
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*/
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{&fd, INVAL_IOCTL, &termio, ENOTTY},
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/* file descriptor is for a regular file */
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{&fd_file, TCGETA, &termio, ENOTTY},
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/* termio is NULL */
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{&fd, TCGETA, NULL, EFAULT}
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};
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static char *device;
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static void verify_ioctl(unsigned int i)
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{
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TEST(ioctl(*(tcases[i].fd), tcases[i].request, tcases[i].s_tio));
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if (TST_RET != -1) {
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tst_res(TFAIL, "call succeeded unexpectedly");
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return;
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}
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if (TST_ERR != tcases[i].error) {
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tst_res(TFAIL | TTERRNO,
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"failed unexpectedly; expected %s",
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tst_strerrno(tcases[i].error));
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return;
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}
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tst_res(TPASS | TTERRNO, "failed as expected");
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}
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static void setup(void)
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{
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unsigned int i;
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if (!device)
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tst_brk(TBROK, "You must specify a tty device with -D option");
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fd = SAFE_OPEN(device, O_RDWR, 0777);
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if (tst_kvercmp(3, 7, 0) < 0) {
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for (i = 0; i < ARRAY_SIZE(tcases); i++) {
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if (tcases[i].request == INVAL_IOCTL)
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tcases[i].error = EINVAL;
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}
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}
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fd_file = SAFE_OPEN("x", O_CREAT, 0777);
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}
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static void cleanup(void)
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{
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if (fd > 0)
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SAFE_CLOSE(fd);
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if (fd_file > 0)
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SAFE_CLOSE(fd_file);
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}
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static struct tst_test test = {
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.needs_root = 1,
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_ioctl,
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.tcnt = ARRAY_SIZE(tcases),
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.options = (struct tst_option[]) {
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{"D:", &device, "-D <tty device> : for example, /dev/tty[0-9]"},
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{}
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}
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};
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