Change to the user's directory after dropping privileges, in case it is only
accessible to the user (for example, if it's in NFS with root squashing).
Incomplete - we probably need to do the same for rshd and ftpd.

diff -up krb5-appl-1.0/bsd/login.c.login_chdir krb5-appl-1.0/bsd/login.c
--- krb5-appl-1.0/bsd/login.c.login_chdir	2010-03-05 11:01:23.000000000 -0500
+++ krb5-appl-1.0/bsd/login.c	2010-03-05 11:01:23.000000000 -0500
@@ -1115,13 +1115,8 @@ int main(argc, argv)
     }
 #endif /* USE_PAM */
 
-    if (chdir(pwd->pw_dir) < 0) {
-	printf("No directory %s!\n", pwd->pw_dir);
-	if (chdir("/"))
-	    exit(0);
-	pwd->pw_dir = "/";
-	printf("Logging in with home = \"/\".\n");
-    }
+    if (chdir("/"))
+	exit(0);
 
     /* nothing else left to fail -- really log in */
     login_time = time(NULL);
@@ -1293,6 +1288,14 @@ int main(argc, argv)
 	sleepexit(1);
     }
 
+    if (chdir(pwd->pw_dir) < 0) {
+	printf("No directory %s!\n", pwd->pw_dir);
+	if (chdir("/"))
+	    exit(0);
+	pwd->pw_dir = "/";
+	printf("Logging in with home = \"/\".\n");
+    }
+
     /*
      * We are the user now.  Re-create the destroyed ccache and
      * ticket file.