PTRACE_TRAP_NOTIFY(9) Driver Basics PTRACE_TRAP_NOTIFY(9)NAME
ptrace_trap_notify - schedule trap to notify ptracer
SYNOPSIS
void ptrace_trap_notify(struct task_struct * t);
ARGUMENTS
t
tracee wanting to notify tracer
DESCRIPTION
This function schedules sticky ptrace trap which is cleared on the next TRAP_STOP to notify ptracer of an event. t must have been seized
by ptracer.
If t is running, STOP trap will be taken. If trapped for STOP and ptracer is listening for events, tracee is woken up so that it can
re-trap for the new event. If trapped otherwise, STOP trap will be eventually taken without returning to userland after the existing traps
are finished by PTRACE_CONT.
CONTEXT
Must be called with task->sighand->siglock held.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 PTRACE_TRAP_NOTIFY(9)
Check Out this Related Man Page
NETSNMP_TRAP_API(3) Net-SNMP NETSNMP_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.
The various "send_trap()" calls allow you to specify traps in different formats. And the various "trapsink" directives allow you to spec-
ify destinations to receive different formats. But *all* traps are sent to *all* destinations, regardless of how they were specified.
I.e. it's
___ trapsink
/
send_easy_trap ___ [ Trap ] ____ trap2sink
___ [ Generator ]
send_v2trap / [ ] ----- informsink
____
trapsess
*Not*
send_easy_trap -------------------> trapsink
send_v2trap -------------------> trap2sink
???? -------------------> informsink
???? -------------------> trapsess
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)V5.7.2 13 Aug 2010 NETSNMP_TRAP_API(3)
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