From 7b91ad84584b4c61a5315731436675aae7d2fcb2 Mon Sep 17 00:00:00 2001
From: Toni Uhlig <matzeton@googlemail.com>
Date: Wed, 20 Nov 2024 11:01:01 +0100
Subject: [PATCH] Added script to warn a user about issues regarding wrong
 umask and CPack

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
---
 CMakeLists.txt         |  8 ++++++++
 scripts/umask-check.sh | 14 ++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100755 scripts/umask-check.sh

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d977ca20..97939faa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -200,6 +200,14 @@ add_executable(nDPId nDPId.c ${NDPID_PFRING_SRCS} nio.c utils.c)
 add_executable(nDPIsrvd nDPIsrvd.c nio.c utils.c)
 add_executable(nDPId-test nDPId-test.c ${NDPID_PFRING_SRCS})
 
+add_custom_target(umask_check)
+add_custom_command(
+    TARGET umask_check
+    PRE_BUILD
+    COMMAND ${CMAKE_SOURCE_DIR}/scripts/umask-check.sh
+)
+add_dependencies(nDPId umask_check)
+
 add_custom_target(dist)
 add_custom_command(
     TARGET dist
diff --git a/scripts/umask-check.sh b/scripts/umask-check.sh
new file mode 100755
index 00000000..8c81484a
--- /dev/null
+++ b/scripts/umask-check.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+UMASK=$(umask)
+
+if [ "${UMASK}" != "0002" -a "${UMASK}" != "0022" ]; then
+    cat <<EOF
+********************************************
+* WARNING: 'cpack -G DEB' / 'cpack -G RPM' *
+* might not work correctly due to umask,   *
+* which is set to ${UMASK}                     *
+* but expected is either 0002 or 0022      *
+********************************************
+EOF
+fi