fork() -> vfork()

This would have been commit #2 which was "Obtained from: BSD/OS" except
their code is buggy (they call err() if the execl() fails, which will
incorrectly call exit()), so instead this is:

Obtained from:	NetBSD

1 files changed, 4 insertions, 3 deletions

diff --git a/usr.bin/apply/apply.c b/usr.bin/apply/apply.c
index fe060a0..978062f 100644
--- a/usr.bin/apply/apply.c
+++ b/usr.bin/apply/apply.c
@@ -210,13 +210,14 @@ system(command)
 		return(1);
 
 	omask = sigblock(sigmask(SIGCHLD));
-	switch(pid = fork()) {
+	switch(pid = vfork()) {
 	case -1:			/* error */
-		err(1, "fork");
+		err(1, "vfork");
 	case 0:				/* child */
 		(void)sigsetmask(omask);
 		execl(shell, name, "-c", command, NULL);
-		err(1, "%s", shell);
+		warn("%s", shell);
+		_exit(1);
 	}
 	intsave = signal(SIGINT, SIG_IGN);
 	quitsave = signal(SIGQUIT, SIG_IGN);