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2217955 - Enlarge backlog queue for listen() in cupsd

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Resolves: rhbz#2217955
This commit is contained in:
Zdenek Dohnal 2023-06-29 19:29:39 +02:00
parent 11837f3568
commit 28d51928bf
2 changed files with 40 additions and 0 deletions
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35
0001-cups-http-addr.c-Set-listen-backlog-size-to-INT_MAX-.patch Normal file
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@ -0,0 +1,35 @@
From 876fdc1c90a885a58644c8757bc1283c9fd5bcb7 Mon Sep 17 00:00:00 2001
From: Vasilis Liaskovitis <vliaskovitis@suse.com>
Date: Wed, 1 Mar 2023 13:46:28 +0100
Subject: [PATCH] cups/http-addr.c: Set listen backlog size to INT_MAX (fixes
#308)
Use a listen queue size of INT_MAX, which should default to the maximum
supported queue size on the system.
This avoids the problem of the listening backlog queue getting full when
there are too many requests at the same time. The problem was observed
with the previous backlog size (128) by customers when submitting large
batches of print jobs, resulting in some jobs getting lost.
Signed-off-by: Vasilis Liaskovitis <vliaskovitis@suse.com>
---
cups/http-addr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cups/http-addr.c b/cups/http-addr.c
index a61ee0449..6aeeb8074 100644
--- a/cups/http-addr.c
+++ b/cups/http-addr.c
@@ -249,7 +249,7 @@ httpAddrListen(http_addr_t *addr, /* I - Address to bind to */
* Listen...
*/
- if (listen(fd, 5))
+ if (listen(fd, INT_MAX))
{
_cupsSetHTTPError(HTTP_STATUS_ERROR);
--
2.41.0

5
cups.spec
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@ -147,6 +147,8 @@ Patch79: cups-kerberos.patch
Patch80: 0001-Fix-delays-printing-to-lpd-when-reserved-ports-are-e.patch
# 2217283 - The command "cancel -x <job>" does not remove job files
Patch81: 0001-Use-purge-job-instead-of-purge-jobs-when-canceling-a.patch
# 2217955 - Enlarge backlog queue for listen() in cupsd
Patch82: 0001-cups-http-addr.c-Set-listen-backlog-size-to-INT_MAX-.patch
Patch1000: cups-lspp.patch
@ -437,6 +439,8 @@ Sends IPP requests to the specified URI and tests and/or displays the results.
%patch80 -p1 -b .lpd-delay
# 2217283 - The command "cancel -x <job>" does not remove job files
%patch81 -p1 -b .purge-job
# 2217955 - Enlarge backlog queue for listen() in cupsd
%patch82 -p1 -b .listen-backlog
sed -i -e '1iMaxLogSize 0' conf/cupsd.conf.in
@ -859,6 +863,7 @@ rm -f %{cups_serverbin}/backend/smb
* Thu Jun 29 2023 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.2.6-52
- 2217178 - Delays printing to lpd when reserved ports are exhausted
- 2217283 - The command "cancel -x <job>" does not remove job files
- 2217955 - Enlarge backlog queue for listen() in cupsd
* Mon Apr 03 2023 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.2.6-51
- RHEL-316 - Enable fmf tests in centos stream