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