[source] dnsmasq: load instance-specific conf-file if exists

[LEDE Commits]

dedeckeh pushed a commit to source.git, branch master:
https://git.lede-project.org/bc50a97dfc9f6bf3c1c9d0abc56d8ae56b5d48a1

commit bc50a97dfc9f6bf3c1c9d0abc56d8ae56b5d48a1
Author: Emerson Pinter <dev at pinter.com.br>
AuthorDate: Wed Nov 15 17:20:44 2017 -0200

    dnsmasq: load instance-specific conf-file if exists
    
    Without this change, the instance-specific conf-file is being added to procd_add_jail_mount,
    but not used by dnsmasq.
    
    Signed-off-by: Emerson Pinter <dev at pinter.com.br>
---
 package/network/services/dnsmasq/Makefile           |  2 +-
 package/network/services/dnsmasq/files/dnsmasq.init | 14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/package/network/services/dnsmasq/Makefile b/package/network/services/dnsmasq/Makefile
index eb87539..ad118c6 100644
--- a/package/network/services/dnsmasq/Makefile
+++ b/package/network/services/dnsmasq/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dnsmasq
 PKG_VERSION:=2.78
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/
diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index 3d3d833..88c2ce6 100644
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -759,9 +759,14 @@ dnsmasq_start()
 	echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
 	echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
 
+	local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
+	if [ ! -r "$dnsmasqconffile" ]; then
+		dnsmasqconffile=/etc/dnsmasq.conf
+	fi
+
 	# if we did this last, we could override auto-generated config
-	[ -f /etc/dnsmasq.conf ] && {
-		xappend "--conf-file=/etc/dnsmasq.conf"
+	[ -f "${dnsmasqconffile}" ] && {
+		xappend "--conf-file=${dnsmasqconffile}"
 	}
 
 	$PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
@@ -1017,11 +1022,6 @@ dnsmasq_start()
 	[ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
 	procd_set_param respawn
 
-	local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
-	if [ ! -r "$dnsmasqconffile" ]; then
-		dnsmasqconffile=/etc/dnsmasq.conf
-	fi
-
 	procd_add_jail dnsmasq ubus log
 	procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE $RFC6761FILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom $dnsmasqconffile $dnsmasqconfdir $resolvfile $user_dhcpscript /etc/hosts /etc/ethers /sbin/hotplug-call $EXTRA_MOUNT $DHCPSCRIPT
 	procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile