1 files changed, 18 insertions, 0 deletions
diff --git a/lib/PublicInbox/Daemon.pm b/lib/PublicInbox/Daemon.pm
index c6fb62bf..c9594a37 100644
--- a/lib/PublicInbox/Daemon.pm
+++ b/lib/PublicInbox/Daemon.pm
@@ -8,6 +8,7 @@ use warnings;
  use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
  use IO::Handle;
  use IO::Socket;
+use Cwd qw/abs_path/;
  STDOUT->autoflush(1);
  STDERR->autoflush(1);
  require Danga::Socket;
@@ -91,7 +92,24 @@ sub daemon_prepare ($) {
          die "No listeners bound\n" unless @listeners;
  }
  
+sub check_absolute ($$) {
+        my ($var, $val) = @_;
+        if (defined $val && index($val, '/') != 0) {
+                die
+"--$var must be an absolute path when using --daemonize: $val\n";
+        }
+}
+
  sub daemonize () {
+        foreach my $i (0..$#ARGV) {
+                my $arg = $ARGV[$i];
+                next unless -e $arg;
+                $ARGV[$i] = abs_path($arg);
+        }
+        check_absolute('stdout', $stdout);
+        check_absolute('stderr', $stderr);
+        check_absolute('pid-file', $pid_file);
+
          chdir '/' or die "chdir failed: $!";
          open(STDIN, '+<', '/dev/null') or die "redirect stdin failed: $!";