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