X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FLeiExportKw.pm;h=12c8f4067e9e348b430ee3327add7b066c302593;hb=96a5e841a169166457d9cf485e27a0d6cbe7ed75;hp=cea9beeb569424315aaf57ff5536d0696148408a;hpb=8b91bd5f929bf166ee3a79dec43fba0e68b1dc8e;p=public-inbox.git

diff --git a/lib/PublicInbox/LeiExportKw.pm b/lib/PublicInbox/LeiExportKw.pm
index cea9beeb..12c8f406 100644
--- a/lib/PublicInbox/LeiExportKw.pm
+++ b/lib/PublicInbox/LeiExportKw.pm
@@ -7,6 +7,7 @@ use strict;
 use v5.10.1;
 use parent qw(PublicInbox::IPC PublicInbox::LeiInput);
 use Errno qw(EEXIST ENOENT);
+use PublicInbox::Syscall qw(rename_noreplace);
 
 sub export_kw_md { # LeiMailSync->each_src callback
 	my ($oidbin, $id, $self, $mdir) = @_;
@@ -30,30 +31,22 @@ sub export_kw_md { # LeiMailSync->each_src callback
 	my $lei = $self->{lei};
 	for my $d (@try) {
 		my $src = "$mdir/$d/$$id";
-
-		# we use link(2) + unlink(2) since rename(2) may
-		# inadvertently clobber if the "uniquefilename" part wasn't
-		# actually unique.
-		if (link($src, $dst)) { # success
-			# unlink(2) may ENOENT from parallel invocation,
-			# ignore it, but not other serious errors
-			if (!unlink($src) and $! != ENOENT) {
-				$lei->child_error(1, "E: unlink($src): $!");
-			}
+		if (rename_noreplace($src, $dst)) { # success
 			$self->{lms}->mv_src("maildir:$mdir",
 						$oidbin, $id, $bn);
-			return; # success anyways if link(2) worked
+			return; # success
 		} elsif ($! == EEXIST) { # lost race with lei/store?
 			return;
 		} elsif ($! != ENOENT) {
-			$lei->child_error(1, "E: link($src -> $dst): $!");
+			$lei->child_error(1,
+				"E: rename_noreplace($src -> $dst): $!");
 		} # else loop @try
 	}
 	my $e = $!;
 	# both tries failed
 	my $oidhex = unpack('H*', $oidbin);
 	my $src = "$mdir/{".join(',', @try)."}/$$id";
-	$lei->child_error(1, "link($src -> $dst) ($oidhex): $e");
+	$lei->child_error(1, "rename_noreplace($src -> $dst) ($oidhex): $e");
 	for (@try) { return if -e "$mdir/$_/$$id" }
 	$self->{lms}->clear_src("maildir:$mdir", $id);
 }
@@ -74,9 +67,13 @@ sub input_path_url {
 		$self->{lms}->each_src($input, \&export_kw_md, $self, $mdir);
 	} elsif ($input =~ m!\Aimaps?://!i) {
 		my $uri = PublicInbox::URIimap->new($input);
-		my $mic = $self->{nwr}->mic_for_folder($uri);
-		$self->{lms}->each_src($$uri, \&export_kw_imap, $self, $mic);
-		$mic->expunge;
+		if (my $mic = $self->{nwr}->mic_for_folder($uri)) {
+			$self->{lms}->each_src($$uri, \&export_kw_imap,
+						$self, $mic);
+			$mic->expunge;
+		} else {
+			$self->{lei}->child_error(0, "$input unavailable: $@");
+		}
 	} else { die "BUG: $input not supported" }
 }
 
@@ -115,6 +112,7 @@ EOM
 		$self->{nwr} = bless $net, 'PublicInbox::NetWriter';
 		$self->{imap_mod_kw} = $net->can($self->{-merge_kw} ?
 					'imap_add_kw' : 'imap_set_kw');
+		$self->{nwr}->{-skip_creat} = 1;
 	}
 	my $ops = {};
 	$lei->{auth}->op_merge($ops, $self) if $lei->{auth};
@@ -131,7 +129,7 @@ sub _complete_export_kw {
 	my $match_cb = $lei->complete_url_prepare(\@argv);
 	# filter-out read-only sources:
 	my @k = grep(!m!(?://;AUTH=ANONYMOUS\@|\A(?:nntps?|s?news)://)!,
-			$lms->folders($argv[-1], 1));
+			$lms->folders($argv[-1] // undef, 1));
 	my @m = map { $match_cb->($_) } @k;
 	@m ? @m : @k;
 }