use strict;
use parent qw(Exporter);
use v5.10.1;
-use Fcntl qw(FD_CLOEXEC F_SETFD F_GETFD :seek);
+use Fcntl qw(F_SETFD :seek);
use POSIX qw(dup2);
use IO::Socket::INET;
use File::Spec;
# pretend to be systemd (cf. sd_listen_fds(3))
# 3 == SD_LISTEN_FDS_START
my $fd;
- for ($fd = 0; 1; $fd++) {
- my $s = $opt->{$fd};
- last if $fd >= 3 && !defined($s);
- next unless $s;
- my $fl = fcntl($s, F_GETFD, 0);
- if (($fl & FD_CLOEXEC) != FD_CLOEXEC) {
- warn "got FD:".fileno($s)." w/o CLOEXEC\n";
+ for ($fd = 0; $fd < 3 || defined($opt->{$fd}); $fd++) {
+ my $io = $opt->{$fd} // next;
+ my $old = fileno($io);
+ if ($old == $fd) {
+ fcntl($io, F_SETFD, 0) // die "F_SETFD: $!";
+ } else {
+ dup2($old, $fd) // die "dup2($old, $fd): $!";
}
- fcntl($s, F_SETFD, $fl &= ~FD_CLOEXEC);
- dup2(fileno($s), $fd) or die "dup2 failed: $!\n";
}
%ENV = (%ENV, %$env) if $env;
my $fds = $fd - 3;