87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/*
|
|
* Copyright (c) 2006-2023, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2023-11-13 Shell init ver.
|
|
*/
|
|
|
|
#define DBG_TAG "lwp.tty"
|
|
#define DBG_LVL DBG_INFO
|
|
#include <rtdbg.h>
|
|
|
|
#include <terminal/terminal.h>
|
|
#include "lwp_internal.h"
|
|
|
|
static void jobctrl_set_pgrp_orphaned(struct rt_processgroup *pgrp)
|
|
{
|
|
rt_lwp_t proc, nx_proc;
|
|
PGRP_LOCK(pgrp);
|
|
|
|
pgrp->is_orphaned = 1;
|
|
rt_list_for_each_entry(proc, &pgrp->process, pgrp_node)
|
|
{
|
|
LWP_LOCK(proc);
|
|
if (proc->jobctl_stopped)
|
|
{
|
|
LWP_UNLOCK(proc);
|
|
rt_list_for_each_entry_safe(proc, nx_proc, &pgrp->process, pgrp_node)
|
|
{
|
|
LWP_LOCK(proc);
|
|
lwp_signal_kill(proc, SIGHUP, SI_KERNEL, 0);
|
|
lwp_signal_kill(proc, SIGCONT, SI_KERNEL, 0);
|
|
LWP_UNLOCK(proc);
|
|
}
|
|
}
|
|
LWP_UNLOCK(proc);
|
|
}
|
|
|
|
PGRP_UNLOCK(pgrp);
|
|
}
|
|
|
|
void lwp_jobctrl_on_exit(struct rt_lwp *lwp)
|
|
{
|
|
rt_processgroup_t pgrp;
|
|
rt_session_t session;
|
|
lwp_tty_t tp;
|
|
|
|
pgrp = lwp->pgrp;
|
|
RT_ASSERT(pgrp);
|
|
session = pgrp->session;
|
|
RT_ASSERT(session);
|
|
|
|
/**
|
|
* as a session leader, we have to mark tty as freed. So others can race to
|
|
* take it before we actually close and released that tty
|
|
*/
|
|
SESS_LOCK(session);
|
|
if (session->sid == lwp->pid)
|
|
{
|
|
tp = session->ctty;
|
|
session->leader = 0;
|
|
|
|
/* signal to foreground group that modem is disconnected */
|
|
if (tp)
|
|
{
|
|
tty_lock(tp);
|
|
if (tp->t_session == session)
|
|
lwp_tty_signal_pgrp(tp, SIGHUP);
|
|
tty_unlock(tp);
|
|
}
|
|
|
|
/* revoke tty vnode ? */
|
|
|
|
rt_list_for_each_entry(pgrp, &session->processgroup, pgrp_list_node)
|
|
{
|
|
jobctrl_set_pgrp_orphaned(pgrp);
|
|
}
|
|
|
|
}
|
|
SESS_UNLOCK(session);
|
|
|
|
/* release tty */
|
|
/* allow tty stolen? */
|
|
}
|