From 933bf0605826ec8ae5edab6f07920de5b1e66ebe Mon Sep 17 00:00:00 2001
From: Liu Shilong <shilongliu@microsoft.com>
Date: Wed, 4 Jan 2023 16:29:25 +0800
Subject: [PATCH] [build] Add environment when using dpkg hook to avoid lock
 loop. (#13233)

Why I did it
In some cases, dpkg will call dpkg to validate version.
dpkg hook will get stuck in a loop to lock.

How I did it
How to verify it
---
 src/sonic-build-hooks/hooks/dpkg | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 src/sonic-build-hooks/hooks/dpkg

diff --git a/src/sonic-build-hooks/hooks/dpkg b/src/sonic-build-hooks/hooks/dpkg
old mode 100644
new mode 100755
index 7fbc90f9fe..294cb19f4c
--- a/src/sonic-build-hooks/hooks/dpkg
+++ b/src/sonic-build-hooks/hooks/dpkg
@@ -3,8 +3,16 @@
 . /usr/local/share/buildinfo/scripts/buildinfo_base.sh
 REAL_COMMAND=$(get_command dpkg)
 COMMAND_INFO="Locked by command: $REAL_COMMAND $@"
-lock_result=$(acquire_apt_installation_lock "$COMMAND_INFO" )
+NEED_RELEASE_LOCK=n
+if [[ "$DPKG_HOOK_LOCKED" != "y" ]];then
+    lock_result=$(acquire_apt_installation_lock "$COMMAND_INFO" )
+    export DPKG_HOOK_LOCKED=y
+    NEED_RELEASE_LOCK=y
+fi
 $REAL_COMMAND "$@"
 command_result=$?
+if [[ "$NEED_RELEASE_LOCK" == "y" ]];then
+    unset DPKG_HOOK_LOCKED
+fi
 [ "$lock_result" == y ] && release_apt_installation_lock
 exit $command_result