Index: jscan.c
===================================================================
RCS file: /home/dcvs/src/sbin/jscan/jscan.c,v
retrieving revision 1.10
diff -u -r1.10 jscan.c
--- jscan.c	6 Nov 2005 12:32:56 -0000	1.10
+++ jscan.c	26 Jan 2007 09:43:07 -0000
@@ -188,6 +188,18 @@
 			"or zero if stdin is to be the input.\n");
 	usage(av[0]);
     }
+    if (strcmp(mirror_directory, ".") != 0) {
+	struct stat sb;
+	if (stat(mirror_directory, &sb) != 0) {
+	    perror ("Could not stat mirror directory");
+	    usage(av[0]);
+	}
+	if (!S_ISDIR(sb.st_mode))
+	{
+	    fprintf (stderr, "Mirror directory '%s' is not a directory\n", mirror_directory);
+	    usage(av[0]);
+	}
+    }
     if (jdirection == JD_BACKWARDS && (jmodes & (JMODEF_RECORD|JMODEF_OUTPUT))) {
 	fprintf(stderr, "Undo mode is only good in mirroring mode and "
 			"cannot be mixed with other modes.\n");
@@ -270,6 +282,13 @@
 	}
     }
 
+    if (strcmp(mirror_directory, ".") != 0) {
+	if (chdir (mirror_directory) != 0) {
+	    perror ("Could not enter mirror directory");
+	    exit (1);
+	}
+    }
+
     /*
      * Now it gets more difficult.  If we are recording then the input
      * could be representative of continuing data and not have any