From 9f4e71c86931e84b22c899b8893c54aca14c40eb Mon Sep 17 00:00:00 2001
From: Johannes Schoepfer <slackbuilds@schoepfer.info>
Date: Sat, 25 Jan 2020 08:43:08 +0700
Subject: [PATCH] audio/DPF-Plugins: Add setcap.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>
---
 audio/DPF-Plugins/DPF-Plugins.SlackBuild | 11 ++++++++++-
 audio/DPF-Plugins/README                 |  6 ++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/audio/DPF-Plugins/DPF-Plugins.SlackBuild b/audio/DPF-Plugins/DPF-Plugins.SlackBuild
index 0bbfcc68c4..c22199d173 100644
--- a/audio/DPF-Plugins/DPF-Plugins.SlackBuild
+++ b/audio/DPF-Plugins/DPF-Plugins.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for DPF-Plugins
 
-# Copyright 2019  Johannes Schoepfer, Germany
+# Copyright 2020  Johannes Schoepfer, Germany
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -105,4 +105,13 @@ mkdir -p $PKG/install
 cat $CWD/slack-desc > $PKG/install/slack-desc
 
 cd $PKG
+if [ "${SETCAP:-yes}" = "yes" ]; then
+  for bin in $(find . -type f -exec file '{}' + | grep " ELF .* executable, " | cut -f 1 -d : ); do
+    if [ -n "$(readelf -d $bin | grep libjack.so)" ]; then
+      echo "/sbin/setcap cap_ipc_lock,cap_sys_nice=ep $bin" >> $PKG/install/doinst.sh
+      chown root:audio $PKG/$bin
+      chmod 0750 $PKG/$bin
+    fi
+  done
+fi
 /sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/audio/DPF-Plugins/README b/audio/DPF-Plugins/README
index 3f1131660b..3c84fc186d 100644
--- a/audio/DPF-Plugins/README
+++ b/audio/DPF-Plugins/README
@@ -14,5 +14,11 @@ LV2_ONLY=yes may be set to ommit building ladspa, dssi and vst plugins.
 
 Optional dependencies: jack,dssi,projectM
 
+If compiled against jack, this package uses POSIX filesystem
+capabilities to execute with elevated privileges (required for
+realtime audio processing). This may be considered a security/stability
+risk. Please read http://www.slackbuilds.org/caps/ for more information.
+To disable capabilities, pass SETCAP=no to the script.
+
 This build conflicts with "distrho-mini-series" from SBo, as that build
 is a subset of DPF-Plugins.