hostid is a long, and that ship has sailed, but still 64-bit archs should
not truncate the value.
I would like somebody to test this on a 64-bit machine. Even try
setting a 64-bit hostid maybe.
Index: kern_sysctl.c
===================================================================
RCS file: /home/tedu/cvs/src/sys/kern/kern_sysctl.c,v
retrieving revision 1.205
diff -u -r1.205 kern_sysctl.c
--- kern_sysctl.c 27 Jun 2011 03:40:35 -0000 1.205
+++ kern_sysctl.c 2 Jul 2011 00:59:56 -0000
@@ -349,9 +349,18 @@
domainnamelen = newlen;
return (error);
case KERN_HOSTID:
- inthostid = hostid; /* XXX assumes sizeof long <= sizeof int */
- error = sysctl_int(oldp, oldlenp, newp, newlen, &inthostid);
- hostid = inthostid;
+#ifdef LP64
+ if (*oldlenp == sizeof(int64_t) || newlen == sizeof(int64_t)) {
+ error = sysctl_quad(oldp, oldlenp, newp, newlen,
+ &hostid);
+ } else
+#endif
+ {
+ inthostid = hostid;
+ error = sysctl_int(oldp, oldlenp, newp, newlen,
+ &inthostid);
+ hostid = inthostid;
+ }
return (error);
case KERN_CLOCKRATE:
return (sysctl_clockrate(oldp, oldlenp, newp));
