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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/OpenFileDescription.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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ErrorOr<FlatPtr> Process::sys$ttyname(int fd, Userspace<char*> buffer, size_t size)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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REQUIRE_PROMISE(tty);
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auto description = TRY(fds().open_file_description(fd));
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if (!description->is_tty())
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return ENOTTY;
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auto& tty_name = description->tty()->tty_name();
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if (size < tty_name.length() + 1)
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return ERANGE;
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TRY(copy_to_user(buffer, tty_name.characters(), tty_name.length() + 1));
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$ptsname(int fd, Userspace<char*> buffer, size_t size)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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REQUIRE_PROMISE(tty);
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auto description = TRY(fds().open_file_description(fd));
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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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TRY(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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