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package/netsnmp: silence warning when running without IPv6 

snmpd loudly complains every 3 seconds about a failure reading
/proc/net/if_inet6 if the system does not have IPv6 support:

Jan  1 00:00:12 buildroot daemon.err snmpd[92]: ipaddress_linux: could not open /proc/net/if_inet6: No such file or directory
Jan  1 00:00:15 buildroot daemon.err snmpd[92]: ipaddress_linux: could not open /proc/net/if_inet6: No such file or directory
Jan  1 00:00:18 buildroot daemon.err snmpd[92]: ipaddress_linux: could not open /proc/net/if_inet6: No such file or directory
Jan  1 00:00:21 buildroot daemon.err snmpd[92]: ipaddress_linux: could not open /proc/net/if_inet6: No such file or directory

Add an upstream patch to only print this warning once, rather than on every
poll iteration.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2020.11.x
Peter Korsgaard 2020-10-17 21:41:35 +02:00 committed by Yann E. MORIN
parent dd69967123
commit ae85c9fd71
1 changed files with 30 additions and 0 deletions
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30
package/netsnmp/0005-MIB-II-Only-log-once-that-opening-proc-net-if_inet6-.patch 100644
View File

@ -0,0 +1,30 @@
From cd09fd82522861830aaf9d237b26eef5f9ba50d2 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Wed, 21 Nov 2018 20:47:42 -0800
Subject: [PATCH] MIB-II: Only log once that opening /proc/net/if_inet6 failed
If IPv6 has been disabled (ipv6.disable=1) then opening /proc/net/if_inet6
fails. Only log this once instead of thousand of times a day.
Reported-by: Fif <lefif@users.sourceforge.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
agent/mibgroup/ip-mib/data_access/ipaddress_linux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/agent/mibgroup/ip-mib/data_access/ipaddress_linux.c b/agent/mibgroup/ip-mib/data_access/ipaddress_linux.c
index 5ddead3e0c..280575ce39 100644
--- a/agent/mibgroup/ip-mib/data_access/ipaddress_linux.c
+++ b/agent/mibgroup/ip-mib/data_access/ipaddress_linux.c
@@ -234,7 +234,7 @@ _load_v6(netsnmp_container *container, int idx_offset)
#define PROCFILE "/proc/net/if_inet6"
if (!(in = fopen(PROCFILE, "r"))) {
- snmp_log_perror("ipaddress_linux: could not open " PROCFILE);
+ NETSNMP_LOGONCE((LOG_ERR, "ipaddress_linux: could not open " PROCFILE));
return -2;
}
--
2.20.1