only chdir() if needed. This affected having who reading different file

diff --git a/usr.bin/who/who.c b/usr.bin/who/who.c
index 4d57162..5fd8523 100644 (file)
--- a/usr.bin/who/who.c
+++ b/usr.bin/who/who.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: who.c,v 1.7 1999/07/18 01:22:16 deraadt Exp $ */
+/*     $OpenBSD: who.c,v 1.8 2000/03/21 21:54:51 ericj Exp $   */
 /*     $NetBSD: who.c,v 1.4 1994/12/07 04:28:49 jtc Exp $      */
 
 /*
@@ -47,7 +47,7 @@ static char copyright[] =
 #if 0
 static char sccsid[] = "@(#)who.c      8.1 (Berkeley) 6/6/93";
 #endif
-static char rcsid[] = "$OpenBSD: who.c,v 1.7 1999/07/18 01:22:16 deraadt Exp $";
+static char rcsid[] = "$OpenBSD: who.c,v 1.8 2000/03/21 21:54:51 ericj Exp $";
 #endif /* not lint */
 
 #include <sys/types.h>
@@ -116,9 +116,11 @@ main(argc, argv)
                only_current_term = show_term = show_idle = show_labels = 0;
        }
 
-       if (chdir("/dev")) {
-               err(1, "cannot change directory to /dev");
-               /* NOTREACHED */
+       if (show_term || show_idle) {
+               if (chdir("/dev")) {
+                       err(1, "cannot change directory to /dev");
+                       /* NOTREACHED */
+               }
        }
 
        if (show_labels)