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authorDavid Kaspar [Dee'Kej] <dkaspar@redhat.com>2016-11-15 17:21:03 +0100
committerLukáš Nykrýn <lnykryn@redhat.com>2016-11-16 12:17:54 +0100
commit2ea1dcf2d22606f4b30ae16a14a736d0d9dddf24 (patch)
treee2fd5a42d72bfb1b963ea82a0512d5c1ae91f0f6 /sysconfig/network-scripts
parent02760563d7ea60bf767812aa0cf5cd97d20a2217 (diff)
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sysconfig/network: NO_DHCP_HOSTNAME option introduced
Previously, some administrators were unable to force initscripts to not obtatin hostname from DHCP, even though they were using static configuration of network. Righ now, setting 'NO_DHCP_HOSTNAME' to 'yes', 'true' or '1' in /etc/sysconfig/network will allow them to do so.
Diffstat (limited to 'sysconfig/network-scripts')
-rwxr-xr-xsysconfig/network-scripts/ifup-eth16
-rw-r--r--sysconfig/network-scripts/network-functions22
2 files changed, 29 insertions, 9 deletions
diff --git a/sysconfig/network-scripts/ifup-eth b/sysconfig/network-scripts/ifup-eth
index e884fa73..7f21477c 100755
--- a/sysconfig/network-scripts/ifup-eth
+++ b/sysconfig/network-scripts/ifup-eth
@@ -186,10 +186,12 @@ if [ -n "${DYNCONFIG}" ] && [ -x /sbin/dhclient ]; then
generate_config_file_name
generate_lease_file_name
- if need_hostname; then
- DHCLIENTARGS="${DHCLIENTARGS} ${DHCP_HOSTNAME:+-H $DHCP_HOSTNAME} ${ONESHOT} -q ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient-${DEVICE}.pid"
- else
+ if is_hostname_set; then
+ # We already have the hostname ->> send it to DHCP:
DHCLIENTARGS="${DHCLIENTARGS} -H ${DHCP_HOSTNAME:-${HOSTNAME%%.*}} ${ONESHOT} -q ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient-${DEVICE}.pid"
+ else
+ # We need to acquire the hostname:
+ DHCLIENTARGS="${DHCLIENTARGS} ${DHCP_HOSTNAME:+-H $DHCP_HOSTNAME} ${ONESHOT} -q ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient-${DEVICE}.pid"
fi
echo
@@ -333,10 +335,12 @@ if is_true "${DHCPV6C}" && [ -x /sbin/dhclient ]; then
echo
echo -n $"Determining IPv6 information for ${DEVICE}..."
- if need_hostname; then
- DHCLIENTARGS="-6 -1 ${DHCPV6C_OPTIONS} ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient6-${DEVICE}.pid ${DHCP_HOSTNAME:+-H $DHCP_HOSTNAME} ${DEVICE}"
- else
+ if is_hostname_set; then
+ # We already have the hostname ->> send it to DHCP:
DHCLIENTARGS="-6 -1 ${DHCPV6C_OPTIONS} ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient6-${DEVICE}.pid -H ${DHCP_HOSTNAME:-${HOSTNAME%%.*}} ${DEVICE}"
+ else
+ # We need to acquire the hostname:
+ DHCLIENTARGS="-6 -1 ${DHCPV6C_OPTIONS} ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient6-${DEVICE}.pid ${DHCP_HOSTNAME:+-H $DHCP_HOSTNAME} ${DEVICE}"
fi
if /sbin/dhclient "$DHCLIENTARGS"; then
diff --git a/sysconfig/network-scripts/network-functions b/sysconfig/network-scripts/network-functions
index 4ff6b988..46db1cab 100644
--- a/sysconfig/network-scripts/network-functions
+++ b/sysconfig/network-scripts/network-functions
@@ -353,20 +353,36 @@ is_available_wait ()
return $ret
}
-need_hostname ()
+is_hostname_set ()
{
CHECK_HOSTNAME="$(hostname)"
case "$CHECK_HOSTNAME" in
'(none)' | 'localhost' | 'localhost.localdomain')
- return 0
+ # Hostname NOT set:
+ return 1
;;
*)
- return 1
+ # Hostname IS set:
+ return 0
;;
esac
}
+need_hostname ()
+{
+ # Should we avoid obtaining hostname from DHCP? (user override)
+ is_true "${NO_DHCP_HOSTNAME}" && return 1
+
+ if is_hostname_set; then
+ # Hostname is already set, we do not need to acquire it:
+ return 1
+ else
+ # Hostname is NOT set, we need to acquire it:
+ return 0
+ fi
+}
+
set_hostname ()
{
hostname $1