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- #!/usr/bin/perl -w
- # start-memcached
- # 2003/2004 - Jay Bonci <jaybonci@debian.org>
- # This script handles the parsing of the /etc/memcached.conf file
- # and was originally created for the Debian distribution.
- # Anyone may use this little script under the same terms as
- # memcached itself.
- use strict;
- if($> != 0 and $< != 0)
- {
- print STDERR "Only root wants to run start-memcached.\n";
- exit;
- }
- my $params; my $etchandle; my $etcfile = "/etc/memcached.conf";
- # This script assumes that memcached is located at /usr/bin/memcached, and
- # that the pidfile is writable at /var/run/memcached.pid
- my $memcached = "/usr/bin/memcached";
- my $pidfile = "/var/run/memcached.pid";
- # If we don't get a valid logfile parameter in the /etc/memcached.conf file,
- # we'll just throw away all of our in-daemon output. We need to re-tie it so
- # that non-bash shells will not hang on logout. Thanks to Michael Renner for
- # the tip
- my $fd_reopened = "/dev/null";
- sub handle_logfile
- {
- my ($logfile) = @_;
- $fd_reopened = $logfile;
- }
- sub reopen_logfile
- {
- my ($logfile) = @_;
- open *STDERR, ">>$logfile";
- open *STDOUT, ">>$logfile";
- open *STDIN, ">>/dev/null";
- $fd_reopened = $logfile;
- }
- # This is set up in place here to support other non -[a-z] directives
- my $conf_directives = {
- "logfile" => \&handle_logfile,
- };
- if(open $etchandle, $etcfile)
- {
- foreach my $line (<$etchandle>)
- {
- $line ||= "";
- $line =~ s/\#.*//g;
- $line =~ s/\s+$//g;
- $line =~ s/^\s+//g;
- next unless $line;
- next if $line =~ /^\-[dh]/;
- if($line =~ /^[^\-]/)
- {
- my ($directive, $arg) = $line =~ /^(.*?)\s+(.*)/;
- $conf_directives->{$directive}->($arg);
- next;
- }
- push @$params, $line;
- }
- }else{
- $params = [];
- }
- push @$params, "-u root" unless(grep "-u", @$params);
- $params = join " ", @$params;
- if(-e $pidfile)
- {
- open PIDHANDLE, "$pidfile";
- my $localpid = <PIDHANDLE>;
- close PIDHANDLE;
- chomp $localpid;
- if(-d "/proc/$localpid")
- {
- print STDERR "memcached is already running.\n";
- exit;
- }else{
- `rm -f $localpid`;
- }
- }
- my $pid = fork();
- if($pid == 0)
- {
- reopen_logfile($fd_reopened);
- exec "$memcached $params";
- exit(0);
- }else{
- if(open PIDHANDLE,">$pidfile")
- {
- print PIDHANDLE $pid;
- close PIDHANDLE;
- }else{
- print STDERR "Can't write pidfile to $pidfile.\n";
- }
- }
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