diff options
Diffstat (limited to 'meta/recipes-connectivity/dhcpcd/files/0001-20-resolv.conf-improve-the-sitation-of-working-with-.patch')
| -rw-r--r-- | meta/recipes-connectivity/dhcpcd/files/0001-20-resolv.conf-improve-the-sitation-of-working-with-.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/dhcpcd/files/0001-20-resolv.conf-improve-the-sitation-of-working-with-.patch b/meta/recipes-connectivity/dhcpcd/files/0001-20-resolv.conf-improve-the-sitation-of-working-with-.patch new file mode 100644 index 0000000000..8d1ed6671a --- /dev/null +++ b/meta/recipes-connectivity/dhcpcd/files/0001-20-resolv.conf-improve-the-sitation-of-working-with-.patch @@ -0,0 +1,82 @@ +From 02acc4d875ee81e6fd19ef66d69c9f55b4b4a7e7 Mon Sep 17 00:00:00 2001 +From: Chen Qi <Qi.Chen@windriver.com> +Date: Wed, 9 Nov 2022 16:33:18 +0800 +Subject: [PATCH] 20-resolv.conf: improve the sitation of working with systemd + +systemd's resolvconf implementation ignores the protocol part. +See https://github.com/systemd/systemd/issues/25032. + +When using 'dhcp server + dns server + dhcpcd + systemd', we +get an integration issue, that is dhcpcd runs 'resolvconf -d eth0.ra', +yet systemd's resolvconf treats it as eth0. This will delete the +DNS information set by 'resolvconf -a eth0.dhcp'. + +Fortunately, 20-resolv.conf has the ability to build the resolv.conf +file contents itself. We can just pass the generated contents to +systemd's resolvconf. This way, the DNS information is not incorrectly +deleted. Also, it does not cause behavior regression for dhcpcd +in other cases. + +Upstream-Status: Inappropriate [OE Specific] +This patch has been rejected by dhcpcd upstream. +See details in https://github.com/NetworkConfiguration/dhcpcd/pull/152 + +Signed-off-by: Chen Qi <Qi.Chen@windriver.com> +--- + hooks/20-resolv.conf | 17 +++++++++++++---- + 1 file changed, 13 insertions(+), 4 deletions(-) + +diff --git a/hooks/20-resolv.conf b/hooks/20-resolv.conf +index 7c29e276..becc019f 100644 +--- a/hooks/20-resolv.conf ++++ b/hooks/20-resolv.conf +@@ -11,8 +11,12 @@ nocarrier_roaming_dir="$state_dir/roaming" + NL=" + " + : ${resolvconf:=resolvconf} ++resolvconf_from_systemd=false + if command -v "$resolvconf" >/dev/null 2>&1; then + have_resolvconf=true ++ if [ $(basename $(readlink -f $(which $resolvconf))) = resolvectl ]; then ++ resolvconf_from_systemd=true ++ fi + else + have_resolvconf=false + fi +@@ -69,8 +73,13 @@ build_resolv_conf() + else + echo "# /etc/resolv.conf.tail can replace this line" >> "$cf" + fi +- if change_file /etc/resolv.conf "$cf"; then +- chmod 644 /etc/resolv.conf ++ if $resolvconf_from_systemd; then ++ [ -n "$ifmetric" ] && export IF_METRIC="$ifmetric" ++ "$resolvconf" -a "$ifname" <"$cf" ++ else ++ if change_file /etc/resolv.conf "$cf"; then ++ chmod 644 /etc/resolv.conf ++ fi + fi + rm -f "$cf" + } +@@ -170,7 +179,7 @@ add_resolv_conf() + for x in ${new_domain_name_servers}; do + conf="${conf}nameserver $x$NL" + done +- if $have_resolvconf; then ++ if $have_resolvconf && ! $resolvconf_from_systemd; then + [ -n "$ifmetric" ] && export IF_METRIC="$ifmetric" + printf %s "$conf" | "$resolvconf" -a "$ifname" + return $? +@@ -186,7 +195,7 @@ add_resolv_conf() + + remove_resolv_conf() + { +- if $have_resolvconf; then ++ if $have_resolvconf && ($if_down || ! $resolvconf_from_systemd); then + "$resolvconf" -d "$ifname" -f + else + if [ -e "$resolv_conf_dir/$ifname" ]; then +-- +2.17.1 + |