As with PublicInbox::IPC, we'll attempt to bump RLIMIT_NOFILE
and transparently workaround ETOOMANYREFS. If that fails,
we'll give the user a hint to bump RLIMIT_NOFILE since
ETOOMANYREFS is an uncommon error which users may be unfamiliar
with.
Found while stress testing for segfaults.
---
script/lei | 29 ++++++++++++++++++++---------
1 file changed, 20 insertions(+), 9 deletions(-)
diff --git a/script/lei b/script/lei
index f92dd302..58f0dbe9 100755
--- a/script/lei
+++ b/script/lei
@@ -4,10 +4,9 @@
use strict;
use v5.10.1;
use Socket qw(AF_UNIX SOCK_SEQPACKET MSG_EOR pack_sockaddr_un);
-use Errno qw(EINTR ECONNRESET);
use PublicInbox::CmdIPC4;
my $narg = 5;
-my ($sock, $pwd);
+my $sock;
my $recv_cmd = PublicInbox::CmdIPC4->can('recv_cmd4');
my $send_cmd = PublicInbox::CmdIPC4->can('send_cmd4') // do {
require PublicInbox::Spawn; # takes ~50ms even if built *sigh*
@@ -73,20 +72,32 @@ connect($path): $! (after attempted daemon start)
Falling back to (slow) one-shot mode
}
- 1;
-}) { # (Socket::MsgHdr|Inline::C), $sock, $pwd are all available:
+ # (Socket::MsgHdr|Inline::C), $sock are all available:
open my $dh, '<', '.' or die "open(.) $!";
my $buf = join("\0", scalar(@ARGV), @ARGV);
while (my ($k, $v) = each %ENV) { $buf .= "\0$k=$v" }
$buf .= "\0\0";
- $send_cmd->($sock, [ 0, 1, 2, fileno($dh) ], $buf, MSG_EOR) or
- die "sendmsg: $!";
+ my $n = $send_cmd->($sock, [0, 1, 2, fileno($dh)], $buf, MSG_EOR);
+ if (!$n && $!{ETOOMANYREFS} && eval { require BSD::Resource }) {
+ my $NOFILE = BSD::Resource::RLIMIT_NOFILE();
+ my ($s, $h) = BSD::Resource::getrlimit($NOFILE);
+ if ($s < $h && BSD::Resource::setrlimit($NOFILE, $h, $h)) {
+ $n = $send_cmd->($sock, [0, 1, 2, fileno($dh)],
+ $buf, MSG_EOR);
+ }
+ }
+ if (!$n) {
+ die "sendmsg: $! (check RLIMIT_NOFILE)\n" if $!{ETOOMANYREFS};
+ die "sendmsg: $!\n";
+ }
+ 1;
+}) { # connected and request sent to lei-daemon, wait for responses or EOF
my $x_it_code = 0;
while (1) {
- my (@fds) = $recv_cmd->($sock, $buf, 4096 * 33);
+ my (@fds) = $recv_cmd->($sock, my $buf, 4096 * 33);
if (scalar(@fds) == 1 && !defined($fds[0])) {
- last if $! == ECONNRESET;
- next if $! == EINTR;
+ next if $!{EINTR};
+ last if $!{ECONNRESET};
die "recvmsg: $!";
}
last if $buf eq '';
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