10-02-2007
Traps and Interrupts
Well, I don't know where exactly to ask this doubt so I'm asking in the newbie section. I was reading about traps and interrupts when I thought of traps as something that cease the control of the OS from the user and interrupts that cease the control yet provide support for multitasking. Am I right in thinking that? In that case, I think we can generate traps using our programs but why would we want to do it anyways? I mean when interrupts are proving better ways of handling the transfer of control, what use would we have for a trap?
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LEARN ABOUT REDHAT
snmp_trap_api
SNMP_TRAP_API(3) Net-SNMP SNMP_TRAP_API(3)
NAME
send_easy_trap, send_trap_vars, send_v2trap - send TRAPs or INFORMs from a Net-SNMP MIB module
SYNOPSIS
#include <net-snmp/agent/agent_trap.h>
void send_easy_trap(int trap, int specific);
void send_trap_vars(int trap, int specific, struct variable_list *vars);
void send_v2trap(struct variable_list *vars);
DESCRIPTION
These three routines may be used to send traps from a MIB module within the Net-SNMP agent (including an AgentX subagent).
send_easy_trap() sends an SNMPv1 trap (or the SNMPv2 equivalent) to the list of configured trap destinations (or "sinks"), using the pro-
vided values for the generic trap type, and specific trap value.
send_trap_vars() is similar, but appends the supplied list of variable bindings to the traps that are sent.
send_v2trap() uses the supplied list of variable bindings to form an SNMPv2 trap, which is sent to SNMPv2-capable sinks on the configured
list. An equivalent INFORM is sent to the configuredq list of inform sinks. Sinks that can only handle SNMPv1 traps are skipped.
WARNINGS
These routines are used to send the traps immediately they are called. Invoking them at the appropriate time is left to the MIB module
programmer.
SEE ALSO
snmpd.conf(5), snmptrapd(8)
4.2 Berkeley Distribution 7 Mar 2002 SNMP_TRAP_API(3)