From d82c43db87ac421ad9830c77342ad68b1d4d20c3 Mon Sep 17 00:00:00 2001
From: Bryan Mason <bmason@redhat.com>
Date: Sat, 24 Jun 2023 12:31:23 -0700
Subject: [PATCH 1/2] Fix delays printing to lpd when reserved ports are
exhausted
cups_rresvport() doesn't reserve ports less than 512; however,
lpd_queue() continues decrementing the port number to 0. This leads
to delays of ~511 seconds once all ports between 512-1023 are
exhausted. Even when ports become available, lpd_queue() still tries
calling cups_rresvport() with port numbers less than 512, waiting one
second between each call.
---
backend/lpd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/backend/lpd.c b/backend/lpd.c
index a7a44ab20..425b8512a 100644
--- a/backend/lpd.c
+++ b/backend/lpd.c
@@ -63,7 +63,7 @@ static int abort_job = 0; /* Non-zero if we get SIGTERM */
#define RESERVE_NONE 0 /* Don't reserve a privileged port */
#define RESERVE_RFC1179 1 /* Reserve port 721-731 */
-#define RESERVE_ANY 2 /* Reserve port 1-1023 */
+#define RESERVE_ANY 2 /* Reserve port 512-1023 */
/*
@@ -775,7 +775,7 @@ lpd_queue(const char *hostname, /* I - Host to connect to */
if (lport < 721 && reserve == RESERVE_RFC1179)
lport = 731;
- else if (lport < 1)
+ else if (lport < 512)
lport = 1023;
#ifdef HAVE_GETEUID
--
2.41.0