From 31a7bc75d6395cc9c8a5a28d8fe0a8c77080bffc Mon Sep 17 00:00:00 2001
From: Peter <peter.vicman@gmail.com>
Date: Sat, 11 Jul 2020 19:24:31 +0200
Subject: [PATCH] unpack: prevent circular unpacking between two packages In
 case two packages has dependency on each other unpacking fails because unpack
 script goes to loop and eats all the computer resources. With this change
 unpack fails on third pass. Probably this functionality could be done better
 but atm I don't have better idea.

unpack recursive limit hit [package1, package2]
*********** FAILED COMMAND ***********
${SCRIPTS}/unpack "${p}" "${PARENT_PKG}"
**************************************
*********** FAILED COMMAND ***********
${SCRIPTS}/unpack "${p}" "${PARENT_PKG}"
**************************************
*********** FAILED COMMAND ***********
${SCRIPTS}/unpack "${PKG_NAME}" "${PARENT_PKG}"
**************************************
---
 scripts/unpack | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/unpack b/scripts/unpack
index 9ebae7712c..392c5ba733 100755
--- a/scripts/unpack
+++ b/scripts/unpack
@@ -20,9 +20,16 @@ pkg_lock "${PKG_NAME}" "unpack" "${PARENT_PKG}"
 ${SCRIPTS}/get "${PKG_NAME}"
 
 if [ -n "${PKG_DEPENDS_UNPACK}" ]; then
+  export _unpack_recursive_cnt=$((_unpack_recursive_cnt+1)) 
+  if [ ${_unpack_recursive_cnt} -gt 2 ]; then
+    die "unpack recursive limit hit: ${PKG_DEPENDS_UNPACK}, ${PARENT_PKG}"
+  fi
+
   for p in ${PKG_DEPENDS_UNPACK}; do
     ${SCRIPTS}/unpack "${p}" "${PARENT_PKG}"
   done
+  
+  unset _unpack_recursive_cnt
 fi
 
 STAMP="${PKG_BUILD}/.libreelec-unpack"