# The client writes a message to Sys::Syslog native method. # The syslogd writes it into a file and through a pipe. # The syslogd passes it via UDP to the loghost. # The server receives the message on its UDP socket. # Find the message in client, file, pipe, syslogd, server log. # Check that a SIGPIPE is ignored by syslogd. use strict; use warnings; our %args = ( client => { func => sub { write_between2logs(shift, sub { my $self = shift; ${$self->{server}}->loggrep("Signal", 8) or die ref($self), " no 'Signal' between logs"; })}, loggrep => { get_between2loggrep() }, }, syslogd => { ktrace => { qr/syslogd PSIG SIGPIPE/ => 0, qr/syslogd RET execve 0/ => 2, }, loggrep => { get_between2loggrep() }, }, server => { func => sub { read_between2logs(shift, sub { my $self = shift; ${$self->{syslogd}}->kill_syslogd('PIPE'); sleep 1; # schedule syslogd print STDERR "Signal\n"; })}, loggrep => { get_between2loggrep() }, }, file => { loggrep => { get_between2loggrep() } }, pipe => { loggrep => { get_between2loggrep() } }, ); 1;