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Make it possible for a process to switch controlling terminals.

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Via the TIOCSCTTY and TIOCNOTTY ioctls.
This commit is contained in:
Andreas Kling 2019-01-15 08:49:24 +01:00
parent 10308c6434
commit 49b63281a0
6 changed files with 31 additions and 4 deletions
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1
Kernel/Process.h
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@ -206,6 +206,7 @@ public:
static int reap(Process&) WARN_UNUSED_RESULT;
const TTY* tty() const { return m_tty; }
void set_tty(TTY* tty) { m_tty = tty; }
size_t regionCount() const { return m_regions.size(); }
const Vector<RetainPtr<Region>>& regions() const { return m_regions; }

1
Kernel/SlavePTY.cpp
View file

@ -5,6 +5,7 @@ SlavePTY::SlavePTY(unsigned index)
: TTY(11, index)
, m_index(index)
{
set_size(80, 25);
}
SlavePTY::~SlavePTY()

8
Kernel/TTY.cpp
View file

@ -107,7 +107,7 @@ int TTY::ioctl(Process& process, unsigned request, unsigned arg)
Unix::termios* tp;
Unix::winsize* ws;
if (process.tty() != this)
if (process.tty() && process.tty() != this)
return -ENOTTY;
switch (request) {
case TIOCGPGRP:
@ -140,6 +140,12 @@ int TTY::ioctl(Process& process, unsigned request, unsigned arg)
ws->ws_row = m_rows;
ws->ws_col = m_columns;
return 0;
case TIOCSCTTY:
process.set_tty(this);
return 0;
case TIOCNOTTY:
process.set_tty(nullptr);
return 0;
}
ASSERT_NOT_REACHED();
return -EINVAL;