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feat(kernel/drivers): migrate drivers to the kernel
make the drivers builtin Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
192
Kernel/drivers/misc/pty/pty.cpp
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192
Kernel/drivers/misc/pty/pty.cpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <driver.hpp>
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#include <kcon.hpp>
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#include <task.hpp>
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#include <smp.hpp>
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extern Driver::Manager *DriverManager;
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namespace Driver::TeleTypeDevices
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{
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dev_t DriverID;
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TTY::PTMXDevice *ptmx = nullptr;
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struct
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{
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dev_t kcon;
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dev_t tty;
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dev_t ptmx;
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} ids;
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int Open(struct Inode *Node, int Flags, mode_t Mode)
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{
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dev_t min = Node->GetMinor();
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if (min == ids.kcon)
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return KernelConsole::CurrentTerminal.load()->Open(Flags, Mode);
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else if (min == ids.tty)
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{
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TTY::TeletypeDriver *tty = (TTY::TeletypeDriver *)thisProcess->tty;
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if (tty == nullptr)
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return -ENOTTY;
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return tty->Open(Flags, Mode);
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}
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else if (min == ids.ptmx)
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return ptmx->Open();
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return -ENODEV;
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}
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int Close(struct Inode *Node)
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{
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dev_t min = Node->GetMinor();
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if (min == ids.kcon)
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return KernelConsole::CurrentTerminal.load()->Close();
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else if (min == ids.tty)
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{
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TTY::TeletypeDriver *tty = (TTY::TeletypeDriver *)thisProcess->tty;
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if (tty == nullptr)
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return -ENOTTY;
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return tty->Close();
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}
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else if (min == ids.ptmx)
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return ptmx->Close();
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return -ENODEV;
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}
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int Ioctl(struct Inode *Node, unsigned long Request, void *Argp)
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{
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dev_t min = Node->GetMinor();
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if (min == ids.kcon)
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return KernelConsole::CurrentTerminal.load()->Ioctl(Request, Argp);
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else if (min == ids.tty)
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{
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TTY::TeletypeDriver *tty = (TTY::TeletypeDriver *)thisProcess->tty;
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if (tty == nullptr)
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return -ENOTTY;
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return tty->Ioctl(Request, Argp);
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}
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else if (min == ids.ptmx)
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return -ENOSYS;
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return -ENODEV;
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}
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ssize_t Read(struct Inode *Node, void *Buffer, size_t Size, off_t Offset)
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{
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dev_t min = Node->GetMinor();
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if (min == ids.kcon)
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return KernelConsole::CurrentTerminal.load()->Read(Buffer, Size, Offset);
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else if (min == ids.tty)
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{
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TTY::TeletypeDriver *tty = (TTY::TeletypeDriver *)thisProcess->tty;
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if (tty == nullptr)
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return -ENOTTY;
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return tty->Read(Buffer, Size, Offset);
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}
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else if (min == ids.ptmx)
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return -ENOSYS;
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return -ENODEV;
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}
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ssize_t Write(struct Inode *Node, const void *Buffer, size_t Size, off_t Offset)
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{
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dev_t min = Node->GetMinor();
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if (min == ids.kcon)
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return KernelConsole::CurrentTerminal.load()->Write(Buffer, Size, Offset);
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else if (min == ids.tty)
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{
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TTY::TeletypeDriver *tty = (TTY::TeletypeDriver *)thisProcess->tty;
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if (tty == nullptr)
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return -ENOTTY;
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return tty->Write(Buffer, Size, Offset);
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}
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else if (min == ids.ptmx)
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return -ENOSYS;
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return -ENODEV;
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}
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off_t Seek(struct Inode *Node, off_t Offset) { return -ENOSYS; }
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int Stat(struct Inode *Node, struct kstat *Stat) { return -ENOSYS; }
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const struct InodeOperations ops = {
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.Lookup = nullptr,
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.Create = nullptr,
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.Remove = nullptr,
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.Rename = nullptr,
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.Read = Read,
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.Write = Write,
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.Truncate = nullptr,
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.Open = Open,
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.Close = Close,
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.Ioctl = Ioctl,
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.ReadDir = nullptr,
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.MkDir = nullptr,
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.RmDir = nullptr,
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.SymLink = nullptr,
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.ReadLink = nullptr,
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.Seek = Seek,
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.Stat = Stat,
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};
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int Entry()
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{
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ptmx = new TTY::PTMXDevice;
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mode_t mode = 0;
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/* c rw- r-- --- */
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mode = S_IRUSR | S_IWUSR |
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S_IRGRP |
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S_IFCHR;
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ids.kcon = DriverManager->CreateDeviceFile(DriverID, "kcon", mode, &ops);
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/* c rw- rw- rw- */
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mode = S_IRUSR | S_IWUSR |
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S_IRGRP | S_IWGRP |
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S_IRUSR | S_IWUSR |
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S_IFCHR;
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ids.tty = DriverManager->CreateDeviceFile(DriverID, "tty", mode, &ops);
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ids.ptmx = DriverManager->CreateDeviceFile(DriverID, "ptmx", mode, &ops);
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return 0;
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}
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int Final()
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{
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DriverManager->UnregisterDevice(DriverID, ids.kcon);
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DriverManager->UnregisterDevice(DriverID, ids.tty);
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DriverManager->UnregisterDevice(DriverID, ids.ptmx);
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delete ptmx;
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return 0;
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}
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int Panic() { return 0; }
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int Probe() { return 0; }
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REGISTER_BUILTIN_DRIVER(pty,
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"Pseudo Terminal Devices Driver",
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"enderice2",
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1, 0, 0,
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Entry,
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Final,
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Panic,
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Probe);
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}
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