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dnsmasq: switch to /tmp/resolv.conf.d/resolv.conf.auto

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Mount-bind directory instead of resolv.conf.auto file in jail to
avoid problems when the file is deleted/replaced.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2020-01-03 13:39:06 +02:00
parent 5e1604477a
commit cd48d8d342
2 changed files with 8 additions and 7 deletions
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2
package/network/services/dnsmasq/files/dhcp.conf
View File

@ -13,7 +13,7 @@ config dnsmasq
option authoritative 1
option readethers 1
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.auto'
option resolvfile '/tmp/resolv.conf.d/resolv.conf.auto'
#list server '/mycompany.local/1.2.3.4'
option nonwildcard 1 # bind to & keep track of interfaces
#list interface br-lan

13
package/network/services/dnsmasq/files/dnsmasq.init
View File

@ -768,7 +768,7 @@ dnsmasq_start()
{
local cfg="$1"
local disabled user_dhcpscript
local resolvfile localuse=0
local resolvfile resolvdir localuse=0
config_get_bool disabled "$cfg" disabled 0
[ "$disabled" -gt 0 ] && return 0
@ -923,10 +923,11 @@ dnsmasq_start()
config_get_bool noresolv "$cfg" noresolv 0
if [ "$noresolv" != "1" ]; then
config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.auto
config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
[ -n "$resolvfile" -a ! -e "$resolvfile" ] && touch "$resolvfile"
xappend "--resolv-file=$resolvfile"
[ "$resolvfile" = "/tmp/resolv.conf.auto" ] && localuse=1
[ "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
resolvdir="$(dirname "$resolvfile")"
fi
config_get_bool localuse "$cfg" localuse "$localuse"
@ -1070,7 +1071,7 @@ dnsmasq_start()
procd_set_param respawn
procd_add_jail dnsmasq ubus log
procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE $RFC6761FILE $DHCPBOGUSHOSTNAMEFILE /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 $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE $RFC6761FILE $DHCPBOGUSHOSTNAMEFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript /etc/hosts /etc/ethers /sbin/hotplug-call $EXTRA_MOUNT $DHCPSCRIPT
procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
procd_close_instance
@ -1084,9 +1085,9 @@ dnsmasq_stop()
config_get_bool noresolv "$cfg" noresolv 0
config_get resolvfile "$cfg" "resolvfile"
[ "$noresolv" = 0 -a "$resolvfile" = "/tmp/resolv.conf.auto" ] && localuse=1
[ "$noresolv" = 0 -a "$resolvfile" = "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=1
config_get_bool localuse "$cfg" localuse "$localuse"
[ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.auto" /tmp/resolv.conf
[ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
}