-Coders,
a number of systems (including OSX, AIX, IRIX and Tru64) have known problems
when using nlist/klookup (/dev/kmem access) for a number of reasons. A minimal
stop-gap fix is to turn off nlist/klookup usage completely, most conveniently
done by "configure --without-kmem-usage" (which prevents NETSNMP_CAN_USE_NLIST
from being defined).
However, this configuration currently either:
- requires you to build a crippled mini agent, or
- otherwise yields into compile errors saying that NETSNMP_KLOOKUP has been
used, but couldn't be found, because it's only defined when
NETSNMP_CAN_USE_NLIST is defined, too.
The attached trivial patch effectively defines NETSNMP_KLOOKUP to always "return
false" (0) if NETSNMP_CAN_USE_NLIST is *not* defined, thereby fixing the build
error. Successfully tested on AIX 5.3 and IRIX 6.5. Linux and Solaris don't use
nlist/klookup at all and will not be affected by nature.
I think it's a small, safe patch that helps to provide a fix for a major issue
(nlist problems). I'm calling for votes to include this in 5.4.
+Thomas
PS. I'm also begging the honorable Release Manager to seriously consider to
apply this for 5.4.rc1 if just not enough people had the chance to comment/vote
on this before rc1 due to the short notice (my fault, due to lack of time).
--
Thomas Anders (thomas.anders at blue-cable.de)
Index: agent/kernel.h
===================================================================
RCS file: /cvsroot/net-snmp/net-snmp/agent/kernel.h,v
retrieving revision 5.4
diff -u -r5.4 kernel.h
--- agent/kernel.h 15 Oct 2006 17:03:42 -0000 5.4
+++ agent/kernel.h 31 Oct 2006 00:29:04 -0000
@@ -3,6 +3,8 @@
extern void init_kmem(const char *);
extern int klookup(unsigned long, char *, int);
#define NETSNMP_KLOOKUP(x,y,z) klookup((unsigned long) x,y,z)
+#else
+#define NETSNMP_KLOOKUP(x,y,z) (0)
#endif
#if HAVE_KVM_H
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