[Buildroot] [PATCH 1/1] package/netsnmp: add snmp user and systemd service file

From: David Johnson via buildroot <buildroot@buildroot.org>
To: buildroot@buildroot.org
Cc: David Johnson <dave-git@centerclick.org>
Subject: [Buildroot] [PATCH 1/1] package/netsnmp: add snmp user and systemd service file
Date: Thu, 20 Apr 2023 17:12:26 -0400	[thread overview]
Message-ID: <20230420211226.3844651-1-dave-git@centerclick.org> (raw)

* Add a snmp user so snmpd doesn't run as root
* Add a snmp systemd file as only an sysv was previously included

Signed-off-by: David Johnson <dave-git@centerclick.org>
---
 package/netsnmp/S59snmpd      |  2 +-
 package/netsnmp/netsnmp.mk    | 12 ++++++++++++
 package/netsnmp/snmpd.service | 15 +++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 package/netsnmp/snmpd.service

diff --git a/package/netsnmp/S59snmpd b/package/netsnmp/S59snmpd
index 96ed8237ac..aece896670 100644
--- a/package/netsnmp/S59snmpd
+++ b/package/netsnmp/S59snmpd
@@ -17,7 +17,7 @@ export PATH=/sbin:/usr/sbin:/bin:/usr/bin
 # Defaults
 export MIBDIRS=/usr/share/snmp/mibs
 SNMPDRUN=yes
-SNMPDOPTS='-Lsd -Lf /dev/null -p /var/run/snmpd.pid 127.0.0.1'
+SNMPDOPTS='-Lsd -Lf /dev/null -p /var/run/snmpd.pid -u snmp -g snmp 127.0.0.1'
 TRAPDRUN=no
 TRAPDOPTS='-Lsd -p /var/run/snmptrapd.pid'
 
diff --git a/package/netsnmp/netsnmp.mk b/package/netsnmp/netsnmp.mk
index 15bc318e36..8cb7862bbf 100644
--- a/package/netsnmp/netsnmp.mk
+++ b/package/netsnmp/netsnmp.mk
@@ -41,6 +41,14 @@ NETSNMP_INSTALL_TARGET_OPTS = DESTDIR=$(TARGET_DIR) LIB_LDCONFIG_CMD=true instal
 NETSNMP_MAKE = $(MAKE1)
 NETSNMP_CONFIG_SCRIPTS = net-snmp-config
 
+define NETSNMP_USERS
+	snmp -1 snmp -1 * - - - snmpd user
+endef
+
+ifeq ($(BR2_INIT_SYSTEMD),y)
+NETSNMP_CONF_OPTS += --with-systemd
+endif
+
 ifeq ($(BR2_ENDIAN),"BIG")
 NETSNMP_CONF_OPTS += --with-endianness=big
 else
@@ -104,6 +112,10 @@ define NETSNMP_INSTALL_INIT_SYSV
 	$(INSTALL) -D -m 0755 package/netsnmp/S59snmpd \
 		$(TARGET_DIR)/etc/init.d/S59snmpd
 endef
+define NETSNMP_INSTALL_INIT_SYSTEMD
+	$(INSTALL) -D -m 0644 package/netsnmp/snmpd.service \
+		$(TARGET_DIR)/usr/lib/systemd/system/snmpd.service
+endef
 endif
 
 $(eval $(autotools-package))
diff --git a/package/netsnmp/snmpd.service b/package/netsnmp/snmpd.service
new file mode 100644
index 0000000000..6647b10c32
--- /dev/null
+++ b/package/netsnmp/snmpd.service
@@ -0,0 +1,15 @@
+[Unit]
+Description=SNMP Daemon
+After=network.target
+ConditionPathExists=/etc/snmp/snmpd.conf
+
+[Service]
+Type=simple
+Environment=MIBDIRS=/usr/share/snmp/mibs
+Environment=SNMPDOPTS='-Lsd -Lf /dev/null -p /var/run/snmpd.pid -u snmp -g snmp 127.0.0.1'
+EnvironmentFile=-/etc/default/snmpd
+PassEnvironment=MIBDIRS
+ExecStart=/usr/sbin/snmpd -f $SNMPDOPTS
+
+[Install]
+WantedBy=multi-user.target
-- 
2.30.2

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