void Xsimple(void) { word *a; thread *p = runq; var *v; struct builtin *bp; int pid; globlist(); a = runq->argv->words; if(a==0){ Xerror1("empty argument list"); return; } if(flag['x']) pfmt(err, "%v\n", p->argv->words); /* wrong, should do redirs */ v = gvlook(a->word); if(v->fn) execfunc(v); else{ if(strcmp(a->word, "builtin")==0){ if(count(a)==1){ pfmt(err, "builtin: empty argument list\n"); setstatus("empty arg list"); poplist(); return; } a = a->next; popword(); } for(bp = Builtin;bp->name;bp++) if(strcmp(a->word, bp->name)==0){ (*bp->fnc)(); return; } if(exitnext()){ /* fork and wait is redundant */ pushword("exec"); execexec(); Xexit(); } else{ flush(err); Updenv(); /* necessary so changes don't go out again */ if((pid = execforkexec()) < 0){ Xerror("try again"); return; } /* interrupts don't get us out */ poplist(); while(Waitfor(pid, 1) < 0) ; } } }
void execexit(void) { switch(count(runq->argv->words)){ default: pfmt(err, "Usage: exit [status]\nExiting anyway\n"); case 2: setstatus(runq->argv->words->next->word); case 1: Xexit(); } }
void Xeflag(void) { if(eflagok && !truestatus()) Xexit(); }