e57c84c5e6
Implement com(4) interrupt support for receiving data. Add termios terminal support to the com(4) driver with tcsetattr(2) support for configuring the hardware serial settings. Add kernel(7) --console option which can be used to initialize the com(4) driver early for the kernel console with the specified serial settings and window size. Add kernel(7) --text option for overriding the TERM environment variable. Add kernel(7) --disable-logo option for disabling writing the the operating system logo to the console on boot. Add advanced bootloader option to select booting to a serial console on com1. Add bootloader variables and hooks to customize this behavior. Add tix-iso-bootconfig(8) --console, --grub-serial, --serial, and --serial-console options as a convenince to opt into booting to the serial console by default. Add tix-iso-bootconfig(8) --kernel-options option for forwarding additional options to the kernel. The logterminal driver used for tty1 currently assumes that it controls the kernel log, which is not true when com(4) is used as the console, therefore the tty1 driver is currently disabled if a serial console is selected, as a temporary workaround.
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/*
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* Copyright (c) 2012, 2014, 2015, 2016, 2024 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* tty.h
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* Terminal line discipline.
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*/
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#ifndef SORTIX_TTY_H
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#define SORTIX_TTY_H
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#include <string.h>
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#include <wchar.h>
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#if !defined(TTY_NAME_MAX)
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#include <sortix/limits.h>
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#endif
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#include <sortix/termios.h>
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#include <sortix/kernel/kthread.h>
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#include <sortix/kernel/inode.h>
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#include <sortix/kernel/keyboard.h>
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#include <sortix/kernel/poll.h>
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#include "kb/kblayout.h"
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#include "linebuffer.h"
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namespace Sortix {
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class DevTTY : public AbstractInode
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{
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public:
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DevTTY(dev_t dev, mode_t mode, uid_t owner, gid_t group);
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virtual ~DevTTY();
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public:
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virtual Ref<Inode> factory(ioctx_t* ctx, const char* filename, int flags,
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mode_t mode);
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};
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class TTY : public AbstractInode
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{
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public:
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TTY(dev_t dev, ino_t ino, mode_t mode, uid_t owner, gid_t group,
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const char* name);
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virtual ~TTY();
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public:
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virtual ssize_t read(ioctx_t* ctx, uint8_t* buf, size_t count);
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virtual ssize_t write(ioctx_t* ctx, const uint8_t* buf, size_t count);
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virtual int tcgetwincurpos(ioctx_t* ctx, struct wincurpos* wcp);
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virtual int tcsetpgrp(ioctx_t* ctx, pid_t pgid);
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virtual pid_t tcgetpgrp(ioctx_t* ctx);
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virtual int settermmode(ioctx_t* ctx, unsigned termmode);
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virtual int gettermmode(ioctx_t* ctx, unsigned* termmode);
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virtual int poll(ioctx_t* ctx, PollNode* node);
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virtual int tcdrain(ioctx_t* ctx);
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virtual int tcflow(ioctx_t* ctx, int action);
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virtual int tcflush(ioctx_t* ctx, int queue_selector);
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virtual int tcgetattr(ioctx_t* ctx, struct termios* tio);
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virtual pid_t tcgetsid(ioctx_t* ctx);
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virtual int tcsendbreak(ioctx_t* ctx, int duration);
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virtual int tcsetattr(ioctx_t* ctx, int actions, const struct termios* tio);
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virtual int ioctl(ioctx_t* ctx, int cmd, uintptr_t arg);
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public:
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void hup();
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void winch();
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protected:
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void tty_output(const char* str)
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{
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tty_output((const unsigned char*) str, strlen(str));
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}
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virtual void tty_output(const unsigned char* buffer, size_t length) = 0;
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virtual bool Reconfigure(const struct termios* new_tio) = 0;
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protected:
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void ProcessUnicode(uint32_t unicode);
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void ProcessByte(unsigned char byte, uint32_t control_unicode = 0);
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void CommitLineBuffer();
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short PollEventStatus();
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bool CheckForeground();
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bool RequireForeground(int sig);
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bool RequireForegroundUnlocked(int sig);
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bool CheckHandledByte(tcflag_t lflags, unsigned char key, unsigned char byte);
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protected:
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PollChannel poll_channel;
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kthread_mutex_t termlock;
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kthread_cond_t datacond;
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mbstate_t read_ps;
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size_t numeofs;
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LineBuffer linebuffer;
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struct termios tio;
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pid_t foreground_pgid;
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pid_t sid;
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bool hungup;
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char ttyname[TTY_NAME_MAX-5+1];
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};
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} // namespace Sortix
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#endif
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