/*
* Copyright (c) 2024 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <darwintest.h>
T_GLOBAL_META(
T_META_NAMESPACE("xnu.tty"),
T_META_RADAR_COMPONENT_NAME("xnu"),
T_META_RADAR_COMPONENT_VERSION("file descriptors"),
T_META_OWNER("souvik_b"),
T_META_RUN_CONCURRENTLY(true));
static void
tty_ioctl_tioccons(bool privileged)
{
int primary;
const char *name;
int replica;
int on = 1;
int off = 0;
// open primary tty
T_ASSERT_POSIX_SUCCESS(primary = posix_openpt(O_RDWR | O_NOCTTY), "open primary");
// allow opening a replica from the primary
T_ASSERT_POSIX_SUCCESS(grantpt(primary), "grantpt");
T_ASSERT_POSIX_SUCCESS(unlockpt(primary), "unlockpt");
// get the name of the primary tty
T_ASSERT_NOTNULL((name = ptsname(primary)), "ptsname");
// open the replica
T_ASSERT_POSIX_SUCCESS(replica = open(name, O_RDWR | O_NOCTTY), "open replica");
// try calling the TIOCCONS ioctl
if (privileged) {
T_ASSERT_POSIX_SUCCESS(ioctl(primary, TIOCCONS, (char *)&on), "ioctl TIOCCONS on");
} else {
T_ASSERT_POSIX_ERROR(ioctl(primary, TIOCCONS, (char *)&on), -EPERM, "ioctl TIOCCONS on");
}
T_ASSERT_POSIX_SUCCESS(ioctl(primary, TIOCCONS, (char *)&off), "ioctl TIOCCONS off");
// close primary and replica
T_ASSERT_POSIX_SUCCESS(close(primary), "close primary");
T_ASSERT_POSIX_SUCCESS(close(replica), "close replica");
}
T_DECL(tty_ioctl_tioccons_privileged,
"call the TIOCCONS ioctl as root",
T_META_ASROOT(true),
T_META_TAG_VM_PREFERRED)
{
tty_ioctl_tioccons(true);
}
T_DECL(tty_ioctl_tioccons_unprivileged,
"call the TIOCCONS ioctl without root",
T_META_ASROOT(false),
T_META_TAG_VM_PREFERRED)
{
tty_ioctl_tioccons(false);
}