user/dev discussion of public-inbox itself
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25bb3a52720e42748ad6d8642102439a1382b51e blob 1078 bytes (raw)

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# Copyright (C) 2019-2020 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
package PublicInbox::Tmpfile;
use strict;
use warnings;
use base qw(Exporter);
our @EXPORT = qw(tmpfile);
use Fcntl qw(:DEFAULT);
use Errno qw(EEXIST);
use File::Spec;

# use tmpfile instead of open(..., '+>', undef) so we can get an
# unlinked filename which makes sense when viewed with lsof
# (at least on Linux)
# And if we ever stop caring to have debuggable filenames, O_TMPFILE :)
sub tmpfile ($;$$) {
	my ($id, $sock, $append) = @_;
	if (defined $sock) {
		# add the socket inode number so we can figure out which
		# socket it belongs to
		my @st = stat($sock);
		$id .= '-ino:'.$st[1];
	}
	$id =~ tr!/!^!;

	my $fl = O_RDWR | O_CREAT | O_EXCL;
	$fl |= O_APPEND if $append;
	do {
		my $fn = File::Spec->tmpdir . "/$id-".time.'-'.rand;
		if (sysopen(my $fh, $fn, $fl, 0600)) { # likely
			unlink($fn) or warn "unlink($fn): $!"; # FS broken
			return $fh; # success
		}
	} while ($! == EEXIST);
	undef  # EMFILE/ENFILE/ENOSPC/ENOMEM
}

1;
debug log:

solving 25bb3a52 ...
found 25bb3a52 in https://80x24.org/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://ou63pmih66umazou.onion/inbox.comp.mail.public-inbox.meta
	nntp://czquwvybam4bgbro.onion/inbox.comp.mail.public-inbox.meta
	nntp://hjrcffqmbrq6wope.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 the 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