44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* The kernel call that is implemented in this file:
|
|
* m_type: SYS_ENDKSIG
|
|
*
|
|
* The parameters for this kernel call are:
|
|
* m2_i1: SIG_ENDPT # process for which PM is done
|
|
*/
|
|
|
|
#include "../system.h"
|
|
#include <signal.h>
|
|
#include <sys/sigcontext.h>
|
|
|
|
#if USE_ENDKSIG
|
|
|
|
/*===========================================================================*
|
|
* do_endksig *
|
|
*===========================================================================*/
|
|
PUBLIC int do_endksig(m_ptr)
|
|
message *m_ptr; /* pointer to request message */
|
|
{
|
|
/* Finish up after a kernel type signal, caused by a SYS_KILL message or a
|
|
* call to cause_sig by a task. This is called by the PM after processing a
|
|
* signal it got with SYS_GETKSIG.
|
|
*/
|
|
register struct proc *rp;
|
|
int proc;
|
|
|
|
/* Get process pointer and verify that it had signals pending. If the
|
|
* process is already dead its flags will be reset.
|
|
*/
|
|
if(!isokendpt(m_ptr->SIG_ENDPT, &proc))
|
|
return EINVAL;
|
|
|
|
rp = proc_addr(proc);
|
|
if (! (rp->p_rts_flags & SIG_PENDING)) return(EINVAL);
|
|
|
|
/* PM has finished one kernel signal. Perhaps process is ready now? */
|
|
if (! (rp->p_rts_flags & SIGNALED)) /* new signal arrived */
|
|
if ((rp->p_rts_flags &= ~SIG_PENDING)==0) /* remove pending flag */
|
|
lock_enqueue(rp); /* ready if no flags */
|
|
return(OK);
|
|
}
|
|
|
|
#endif /* USE_ENDKSIG */
|
|
|