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	trap.c - 9base - revived minimalist port of Plan 9 userland to Unix
	git clone git://git.suckless.org/9base
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	---
	trap.c (878B)
	---
	1 #include "rc.h"
	2 #include "exec.h"
	3 #include "fns.h"
	4 #include "io.h"
	5 extern char *Signame[];
	6
	7 void
	8 dotrap(void)
	9 {
	10 int i;
	11 struct var *trapreq;
	12 struct word *starval;
	13 starval = vlook("*")->val;
	14 while(ntrap) for(i = 0;i!=NSIG;i++) while(trap[i]){
	15 --trap[i];
	16 --ntrap;
	17 if(getpid()!=mypid) Exit(getstatus());
	18 trapreq = vlook(Signame[i]);
	19 if(trapreq->fn){
	20 start(trapreq->fn, trapreq->pc, (struct var *)0);
	21 runq->local = newvar(strdup("*"), runq->local);
	22 runq->local->val = copywords(starval, (struct wo…
	23 runq->local->changed = 1;
	24 runq->redir = runq->startredir = 0;
	25 }
	26 else if(i==SIGINT \|\| i==SIGQUIT){
	27 /*
	28 * run the stack down until we uncover the
	29 * command reading loop. Xreturn will exit
	30 * if there is none (i.e. if this is not
	31 * an interactive rc.)
	32 */
	33 while(!runq->iflag) Xreturn();
	34 }
	35 else Exit(getstatus());
	36 }
	37 }