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58feebeed2
- Remove goofy _r suffix from syscall names. - Don't take a signed buffer size. - Use Userspace<T>. - Make TTY::tty_name() return a String instead of a StringView.
70 lines
2.6 KiB
C++
70 lines
2.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Kernel/FileSystem/FileDescription.h>
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#include <Kernel/Process.h>
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#include <Kernel/TTY/MasterPTY.h>
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#include <Kernel/TTY/TTY.h>
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namespace Kernel {
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int Process::sys$ttyname(int fd, Userspace<char*> buffer, size_t size)
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{
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REQUIRE_PROMISE(tty);
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if (!validate_write(buffer, size))
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return -EFAULT;
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auto description = file_description(fd);
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if (!description)
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return -EBADF;
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if (!description->is_tty())
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return -ENOTTY;
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auto tty_name = description->tty()->tty_name();
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if (size < tty_name.length() + 1)
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return -ERANGE;
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copy_to_user(buffer, tty_name.characters(), tty_name.length() + 1);
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return 0;
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}
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int Process::sys$ptsname(int fd, Userspace<char*> buffer, size_t size)
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{
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REQUIRE_PROMISE(tty);
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if (!validate_write(buffer, size))
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return -EFAULT;
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auto description = file_description(fd);
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if (!description)
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return -EBADF;
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auto* master_pty = description->master_pty();
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if (!master_pty)
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return -ENOTTY;
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auto pts_name = master_pty->pts_name();
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if (size < pts_name.length() + 1)
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return -ERANGE;
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copy_to_user(buffer, pts_name.characters(), pts_name.length() + 1);
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return 0;
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}
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}
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