user/dev discussion of public-inbox itself
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34ce2052c6047d1e4f8d2131c1c9c6cd1c56e2c4 blob 1605 bytes (raw)

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# Copyright (C) 2016-2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>

# Pure-Perl implementation of "spawn".  This can't take advantage
# of vfork, so no speedups under Linux for spawning from large processes.
package PublicInbox::SpawnPP;
use strict;
use warnings;
use POSIX qw(dup2 :signal_h);

# Pure Perl implementation for folks that do not use Inline::C
sub pi_fork_exec ($$$$$$) {
	my ($redir, $f, $cmd, $env, $rlim, $cd) = @_;
	my $old = POSIX::SigSet->new();
	my $set = POSIX::SigSet->new();
	$set->fillset or die "fillset failed: $!";
	sigprocmask(SIG_SETMASK, $set, $old) or die "can't block signals: $!";
	my $syserr;
	my $pid = fork;
	unless (defined $pid) { # compat with Inline::C version
		$syserr = $!;
		$pid = -1;
	}
	if ($pid == 0) {
		while (@$rlim) {
			my ($r, $soft, $hard) = splice(@$rlim, 0, 3);
			BSD::Resource::setrlimit($r, $soft, $hard) or
			  warn "failed to set $r=[$soft,$hard]\n";
		}
		for my $child_fd (0..$#$redir) {
			my $parent_fd = $redir->[$child_fd];
			next if $parent_fd == $child_fd;
			dup2($parent_fd, $child_fd) or
				die "dup2($parent_fd, $child_fd): $!\n";
		}
		if ($cd ne '') {
			chdir $cd or die "chdir $cd: $!";
		}
		if ($ENV{MOD_PERL}) {
			exec which('env'), '-i', @$env, @$cmd;
			die "exec env -i ... $cmd->[0] failed: $!\n";
		} else {
			local %ENV = map { split(/=/, $_, 2) } @$env;
			my @cmd = @$cmd;
			$cmd[0] = $f;
			exec @cmd;
			die "exec $cmd->[0] failed: $!\n";
		}
	}
	sigprocmask(SIG_SETMASK, $old) or die "can't unblock signals: $!";
	$! = $syserr;
	$pid;
}

1;
debug log:

solving 34ce2052c60 ...
found 34ce2052c60 in public-inbox.git

user/dev discussion of public-inbox itself

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://public-inbox.org/meta
	git clone --mirror http://czquwvybam4bgbro.onion/meta
	git clone --mirror http://hjrcffqmbrq6wope.onion/meta
	git clone --mirror http://ou63pmih66umazou.onion/meta

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 meta meta/ https://public-inbox.org/meta \
		meta@public-inbox.org
	public-inbox-index meta

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.mail.public-inbox.meta
	nntp://7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/inbox.comp.mail.public-inbox.meta
	nntp://ie5yzdi7fg72h7s4sdcztq5evakq23rdt33mfyfcddc5u3ndnw24ogqd.onion/inbox.comp.mail.public-inbox.meta
	nntp://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/inbox.comp.mail.public-inbox.meta
	nntp://news.gmane.io/gmane.mail.public-inbox.general
 note: .onion URLs require Tor: https://www.torproject.org/

code repositories for project(s) associated with this inbox:

	https://80x24.org/public-inbox.git

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git