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Kernel: Turn Thread::current and Process::current into functions

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This allows us to query the current thread and process on a
per processor basis
This commit is contained in:
Tom 2020-06-28 15:34:31 -06:00 • committed by Andreas Kling
parent cdc78515b6
commit 16783bd14d
39 changed files with 518 additions and 369 deletions
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18
Kernel/TTY/TTY.cpp
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@ -282,7 +282,7 @@ void TTY::set_termios(const termios& t)
int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
{
REQUIRE_PROMISE(tty);
auto& process = *Process::current;
auto& current_process = *Process::current();
pid_t pgid;
termios* tp;
winsize* ws;
@ -290,7 +290,7 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
#if 0
// FIXME: When should we block things?
// How do we make this work together with MasterPTY forwarding to us?
if (process.tty() && process.tty() != this) {
if (current_process.tty() && current_process.tty() != this) {
return -ENOTTY;
}
#endif
@ -308,14 +308,14 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
return -EPERM;
if (pgid != process->pgid())
return -EPERM;
if (Process::current->sid() != process->sid())
if (current_process.sid() != process->sid())
return -EPERM;
}
m_pgid = pgid;
return 0;
case TCGETS:
tp = reinterpret_cast<termios*>(arg);
if (!process.validate_write(tp, sizeof(termios)))
if (!current_process.validate_write(tp, sizeof(termios)))
return -EFAULT;
*tp = m_termios;
return 0;
@ -323,7 +323,7 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
case TCSETSF:
case TCSETSW:
tp = reinterpret_cast<termios*>(arg);
if (!process.validate_read(tp, sizeof(termios)))
if (!current_process.validate_read(tp, sizeof(termios)))
return -EFAULT;
set_termios(*tp);
if (request == TCSETSF)
@ -331,14 +331,14 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
return 0;
case TIOCGWINSZ:
ws = reinterpret_cast<winsize*>(arg);
if (!process.validate_write(ws, sizeof(winsize)))
if (!current_process.validate_write(ws, sizeof(winsize)))
return -EFAULT;
ws->ws_row = m_rows;
ws->ws_col = m_columns;
return 0;
case TIOCSWINSZ:
ws = reinterpret_cast<winsize*>(arg);
if (!process.validate_read(ws, sizeof(winsize)))
if (!current_process.validate_read(ws, sizeof(winsize)))
return -EFAULT;
if (ws->ws_col == m_columns && ws->ws_row == m_rows)
return 0;
@ -347,10 +347,10 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
generate_signal(SIGWINCH);
return 0;
case TIOCSCTTY:
process.set_tty(this);
current_process.set_tty(this);
return 0;
case TIOCNOTTY:
process.set_tty(nullptr);
current_process.set_tty(nullptr);
return 0;
}
ASSERT_NOT_REACHED();