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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/Process.h>
#include <Kernel/TTY/MasterPTY.h>
#include <Kernel/TTY/TTY.h>
namespace Kernel {
int Process::sys$ttyname_r(int fd, char* buffer, ssize_t size)
{
REQUIRE_PROMISE(tty);
if (size < 0)
return -EINVAL;
if (!validate_write(buffer, size))
return -EFAULT;
auto description = file_description(fd);
if (!description)
return -EBADF;
if (!description->is_tty())
return -ENOTTY;
String tty_name = description->tty()->tty_name();
if ((size_t)size < tty_name.length() + 1)
return -ERANGE;
copy_to_user(buffer, tty_name.characters(), tty_name.length() + 1);
return 0;
}
int Process::sys$ptsname_r(int fd, char* buffer, ssize_t size)
{
REQUIRE_PROMISE(tty);
if (size < 0)
return -EINVAL;
if (!validate_write(buffer, size))
return -EFAULT;
auto description = file_description(fd);
if (!description)
return -EBADF;
auto* master_pty = description->master_pty();
if (!master_pty)
return -ENOTTY;
auto pts_name = master_pty->pts_name();
if ((size_t)size < pts_name.length() + 1)
return -ERANGE;
copy_to_user(buffer, pts_name.characters(), pts_name.length() + 1);
return 0;
}
}
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