2009/8/17 Jaskiewicz, Michael-P49499 <michael.jaskiew...@gdc4s.com>: > Looking at the net-snmp-config.h file, I noticed that the some > of the #defines point to programs
One of the major difficulties in implementing a MIB module, is determining the information that should be reported. The SNMP agent isn't a "magic box" (which seems to come as a major surprise to many people on these lists!). It can only report information that it can retrieve from the underlying operating system. One way to retrieve this information is to run a suitable shell command (such as "ps") and interpret the output. At first sight, this is a quick-n-simple approach, so is often used for first-draft implementations. However there are a number of issues with doing this (differences in output format from one system to another, one release to another, inefficiencies of running a sub-command for every SNMP request, error handling, etc etc) So in general, we try to retrieve the underlying data from some suitable system API instead. But that's why there are definitions such as PSCMD - mostly as a hangover (or fallback) to this quick-n-dirty approach. > Is it possible in any way to run the program from a normal Win32 > cmd line or do I have to use Cygwin? The readme.win32 file led me to > believe that Cygwin was not a requirement. Cygwin is not necessary for running the agent under Windows, no. But I'm not sure that the mechanism for forking off a sub-process works under a non-Cygwin Windows environment either. So the lack of "ps" isn't really relevant. The Right Way To Handle This is to use whatever API the Windows OS provides for retrieving information about running processes. A quick look seems to indicate that there is some support for Windows under the 'host' group, though this may be Cygwin only. If so, then it simply requires a volunteer to port/extend this code to non-Cygwin Windows environments. But the lack of a "ps" command should not be a problem. Dave ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
