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Add basic PTY support.

Browse source 
For now, there are four hard-coded PTYs: /dev/pt{m,s}[0123]
Use this in the Terminal to open a pty pair and spawn a shell.
This commit is contained in:
Andreas Kling 2019-01-15 06:30:19 +01:00
parent ecb4ab0943
commit 2f74c2f430
21 changed files with 287 additions and 10 deletions
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25
Kernel/init.cpp
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@ -22,6 +22,8 @@
#include "VirtualConsole.h"
#include "Scheduler.h"
#include "PS2MouseDevice.h"
#include "MasterPTY.h"
#include "SlavePTY.h"
#define SPAWN_GUI_TEST_APP
//#define SPAWN_MULTIPLE_SHELLS
@ -36,6 +38,14 @@ VirtualConsole* tty3;
Keyboard* keyboard;
PS2MouseDevice* ps2mouse;
GUIEventDevice* gui_event_device;
MasterPTY* ptm0;
MasterPTY* ptm1;
MasterPTY* ptm2;
MasterPTY* ptm3;
SlavePTY* pts0;
SlavePTY* pts1;
SlavePTY* pts2;
SlavePTY* pts3;
#ifdef STRESS_TEST_SPAWNING
static void spawn_stress() NORETURN;
@ -56,6 +66,16 @@ static void spawn_stress()
}
#endif
static void make_pty_pair(unsigned index)
{
auto* master = new MasterPTY(index);
auto* slave = new SlavePTY(index);
master->set_slave(*slave);
slave->set_master(*master);
VFS::the().register_character_device(*master);
VFS::the().register_character_device(*slave);
}
static void init_stage2() NORETURN;
static void init_stage2()
{
@ -75,6 +95,11 @@ static void init_stage2()
auto dev_random = make<RandomDevice>();
vfs->register_character_device(*dev_random);
make_pty_pair(0);
make_pty_pair(1);
make_pty_pair(2);
make_pty_pair(3);
vfs->register_character_device(*keyboard);
vfs->register_character_device(*ps2mouse);
vfs->register_character_device(*gui_event_device);