bin/sh/eval.c

81 static int builtin_flags;	/* evalcommand flags for builtins */
152 evalstring(char *s, int flags)
159 	flags_exit = flags & EV_EXIT;
160 	flags &= ~EV_EXIT;
167 				evaltree(n, flags | EV_EXIT);
169 				evaltree(n, flags);
190 evaltree(union node *n, int flags)
211 			evaltree(n->nbinary.ch1, flags & ~EV_EXIT);
230 			evalredir(n, flags);
233 			evalsubshell(n, flags);
234 			do_etest = !(flags & EV_TESTED);
237 			evalsubshell(n, flags);
253 			evalloop(n, flags & ~EV_EXIT);
256 			evalfor(n, flags & ~EV_EXIT);
266 				evaltree(n->nclist.body, flags & ~EV_EXIT);
285 			do_etest = !(flags & EV_TESTED);
288 			evalcommand(n, flags, (struct backcmd *)NULL);
289 			do_etest = !(flags & EV_TESTED);
306 	if (flags & EV_EXIT)
312 evalloop(union node *n, int flags)
339 		evaltree(n->nbinary.ch2, flags);
349 evalfor(union node *n, int flags)
367 		evaltree(n->nfor.body, flags);
427 evalsubshell(union node *n, int flags)
434 	if ((!backgnd && flags & EV_EXIT && !have_traps()) ||
437 			flags &=~ EV_TESTED;
439 		evaltree(n->nredir.n, flags | EV_EXIT);	/* never returns */
454 evalredir(union node *n, int flags)
482 		evaltree(n->nredir.n, flags);
818  * Note: This may or may not return if (flags & EV_EXIT).
822 evalcommand(union node *cmd, int flags, struct backcmd *backcmd)
849 	TRACE(("evalcommand(%p, %d) called\n", (void *)cmd, flags));
995 	    && ((flags & EV_EXIT) == 0 || have_traps()))
996 	 || ((flags & EV_BACKCMD) != 0
1001 		if (flags & EV_BACKCMD) {
1012 			    cmdentry.u.index, flags & EV_BACKCMD ? pip : NULL);
1017 		if (flags & EV_BACKCMD) {
1024 			flags &= ~EV_BACKCMD;
1026 		flags |= EV_EXIT;
1065 		    flags & (EV_TESTED | EV_EXIT));
1087 		if (flags == EV_BACKCMD) {
1121 		builtin_flags = flags;
1140 		if (flags == EV_BACKCMD) {
1152 			if (flags != EV_BACKCMD)