143120d160
Unfortunately this area is not standardized by POSIX. Linux uses an ioctl which is not that bad, but I'd like to have a designated function. I'm not sure if this facility is powerful enough and whether it should be improved. Also note that I use a struct winsize as on Linux, but I use size_ts instead for the heck of it. Perhaps I should use another name for the struct.
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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terminal.cpp
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Provides an interface to terminals for user-space.
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******************************************************************************/
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#include <sortix/kernel/platform.h>
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#include <sortix/termios.h>
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#include <libmaxsi/error.h>
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#include "syscall.h"
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#include "process.h"
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#include "terminal.h"
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using namespace Maxsi;
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namespace Sortix
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{
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int SysSetTermMode(int fd, unsigned mode)
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{
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Process* process = CurrentProcess();
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Device* dev = process->descriptors.Get(fd);
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if ( !dev ) { Error::Set(EBADF); return -1; }
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if ( !dev->IsType(Device::TERMINAL) ) { Error::Set(ENOTTY); return -1; }
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DevTerminal* term = (DevTerminal*) dev;
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return term->SetMode(mode) ? 0 : -1;
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}
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int SysGetTermMode(int fd, unsigned* mode)
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{
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Process* process = CurrentProcess();
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Device* dev = process->descriptors.Get(fd);
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if ( !dev ) { Error::Set(EBADF); return -1; }
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if ( !dev->IsType(Device::TERMINAL) ) { Error::Set(ENOTTY); return -1; }
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DevTerminal* term = (DevTerminal*) dev;
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// TODO: Check that mode is a valid user-space pointer.
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*mode = term->GetMode();
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return 0;
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}
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int SysIsATTY(int fd)
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{
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Process* process = CurrentProcess();
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Device* dev = process->descriptors.Get(fd);
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if ( !dev ) { Error::Set(EBADF); return 0; }
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if ( !dev->IsType(Device::TERMINAL) ) { Error::Set(ENOTTY); return 0; }
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return 1;
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}
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int SysTCGetWinSize(int fd, struct winsize* ws)
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{
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Process* process = CurrentProcess();
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Device* dev = process->descriptors.Get(fd);
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if ( !dev ) { Error::Set(EBADF); return -1; }
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if ( !dev->IsType(Device::TERMINAL) ) { Error::Set(ENOTTY); return -1; }
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DevTerminal* term = (DevTerminal*) dev;
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struct winsize ret;
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ret.ws_col = term->GetWidth();
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ret.ws_row = term->GetHeight();
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ret.ws_xpixel = 0; // Not supported by DevTerminal interface.
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ret.ws_ypixel = 0; // Not supported by DevTerminal interface.
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// TODO: Check that ws is a valid user-space pointer.
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*ws = ret;
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return 0;
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}
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void Terminal::Init()
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{
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Syscall::Register(SYSCALL_SETTERMMODE, (void*) SysSetTermMode);
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Syscall::Register(SYSCALL_GETTERMMODE, (void*) SysGetTermMode);
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Syscall::Register(SYSCALL_ISATTY, (void*) SysIsATTY);
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Syscall::Register(SYSCALL_TCGETWINSIZE, (void*) SysTCGetWinSize);
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}
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}
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