$set->fillset or die "fillset failed: $!";
sigprocmask(SIG_SETMASK, $set, $old) or die "can't block signals: $!";
my $syserr;
+ pipe(my ($r, $w));
my $pid = fork;
unless (defined $pid) { # compat with Inline::C version
$syserr = $!;
$pid = -1;
}
if ($pid == 0) {
- $SIG{__DIE__} = sub { warn @_; _exit 1 };
+ close $r;
+ $SIG{__DIE__} = sub {
+ warn(@_);
+ syswrite($w, my $num = $! + 0);
+ _exit(1);
+ };
for my $child_fd (0..$#$redir) {
my $parent_fd = $redir->[$child_fd];
next if $parent_fd == $child_fd;
if ($pgid >= 0 && !defined(setpgid(0, $pgid))) {
die "setpgid(0, $pgid): $!";
}
- $SIG{$_} = 'DEFAULT' for keys %SIG;
+ for (keys %SIG) {
+ $SIG{$_} = 'DEFAULT' if substr($_, 0, 1) ne '_';
+ }
if ($cd ne '') {
chdir $cd or die "chdir $cd: $!";
}
} else {
%ENV = map { split(/=/, $_, 2) } @$env;
}
- exec @$cmd;
+ undef $r;
+ exec { $f } @$cmd;
die "exec @$cmd failed: $!";
}
+ close $w;
sigprocmask(SIG_SETMASK, $old) or die "can't unblock signals: $!";
- $! = $syserr;
+ if (my $cerrnum = do { local $/, <$r> }) {
+ $pid = -1;
+ $! = $cerrnum;
+ } else {
+ $! = $syserr;
+ }
$pid;
}