plan9port/src/cmd/rc/trap.c

35 lines
887 B
C
Raw Normal View History

#include "rc.h"
#include "exec.h"
#include "fns.h"
#include "io.h"
extern char *Signame[];
void dotrap(void){
register int i;
register struct var *trapreq;
register struct word *starval;
starval=vlook("*")->val;
while(ntrap) for(i=0;i!=NSIG;i++) while(trap[i]){
--trap[i];
--ntrap;
if(getpid()!=mypid) Exit(getstatus());
trapreq=vlook(Signame[i]);
if(trapreq->fn){
start(trapreq->fn, trapreq->pc, (struct var *)0);
runq->local=newvar(strdup("*"), runq->local);
runq->local->val=copywords(starval, (struct word *)0);
runq->local->changed=1;
runq->redir=runq->startredir=0;
}
else if(i==SIGINT || i==SIGQUIT){
/*
* run the stack down until we uncover the
* command reading loop. Xreturn will exit
* if there is none (i.e. if this is not
* an interactive rc.)
*/
while(!runq->iflag) Xreturn();
}
else Exit(getstatus());
}
}