46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* The system call implemented in this file:
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* m_type: SYS_EXIT
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*
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* The parameters for this system call are:
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* m1_i1: EXIT_STATUS (exit status, 0 if normal exit)
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*
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* Author:
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* Jorrit N. Herder <jnherder@cs.vu.nl>
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*/
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#include "../kernel.h"
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#include "../system.h"
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/*===========================================================================*
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* do_exit *
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*===========================================================================*/
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PUBLIC int do_exit(m_ptr)
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message *m_ptr; /* pointer to request message */
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{
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/* Handle sys_exit. A server or driver wants to exit. This may happen
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* on a panic, but also is done when MINIX is shutdown.
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*/
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register struct proc *rp;
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int proc_nr = m_ptr->m_source; /* can only exit own process */
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if (m_ptr->EXIT_STATUS != 0) {
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kprintf("WARNING: system process %d exited with an error.\n", proc_nr );
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}
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/* Now call the routine to clean up of the process table slot. This cancels
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* outstanding timers, possibly removes the process from the message queues,
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* and reset important process table fields.
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*/
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clear_proc(proc_nr);
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/* If the shutdown sequence is active, see if it was awaiting the shutdown
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* of this system service. If so, directly continue the stop sequence.
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*/
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if (shutting_down && shutdown_process == proc_addr(proc_nr)) {
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stop_sequence(&shutdown_timer);
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}
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return(EDONTREPLY); /* no reply is sent */
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}
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