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trap.c - 9base - revived minimalist port of Plan 9 userland to Unix
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trap.c (878B)
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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 }
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