Improve processing of multiarch libraries location in scripts.

Initramfs hook instead of a fixed list of libraries, it processes dependent
libraries by using copy_exec function. This also ensure the copy of the
symlinks and maintaining the original paths by multiarch location.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 3eb77b4fca)

usr/share/initramfs-tools/hooks/cryptlukssc

@@ -18,49 +18,84 @@ esac
 
 . /usr/share/initramfs-tools/hook-functions
 
+# Additional function for copying plugin (library) from multiarch directory.
+# Based on copy_exec.
+copy_plugin() {
+	local src target x
+
+	src="${1}"
+	if [ ${src} = "${src#/}" ]; then
+		for x in /${ARCHDIR} /lib /usr/${ARCHDIR} /usr/lib; do
+			if [ -e $x/$src ]; then
+				src=$(echo $x/$src)
+				break
+			fi
+		done
+	fi
+	target="${2:-$src}"
+
+	copy_exec "${src}" "${target}" || return $(($? - 1))
+}
+
+# Determine multiarch directory
+ARCHDIR=$(ldd $SHELL | grep libc\.so |\
+          sed -e "s|^.*=> \(.*\)/[^/]*$|\1|" -e "s|^/usr||" -e "s|^/||")
+if [ -z "$ARCHDIR" ] && [ -n "$HOSTTYPE" ] && [ -n "$OSTYPE" ]; then
+  ARCHDIR=$HOSTTYPE-$OSTYPE
+fi
+if [ -z "$ARCHDIR" ]; then
+  ARCHDIR=$(uname -i)
+  if [ "$ARCHDIR" = "unknown" ]; then
+    ARCHDIR=$(uname -m)
+  fi
+  if [ "$ARCHDIR" = "ppc64le" ]; then
+    ARCHDIR="powerpc64"
+  fi
+  if [ "$ARCHDIR" = "ppc64el" ]; then
+    ARCHDIR="powerpc64"
+  fi
+  ARCHDIR="*${ARCHDIR}*"
+fi
+
 # Hooks for loading smartcard reading software into the initramfs
 
 # Install directories needed by smartcard reading daemon, command, and
 # key-script
-for dir in etc/opensc usr/lib/pcsc var/run tmp ; do
-    if [ ! -d ${DESTDIR}/${dir} ] ; then mkdir -p ${DESTDIR}/${dir} ; fi
+for dir in etc/opensc lib usr/lib var/run tmp ; do
+	if [ ! -d ${DESTDIR}/${dir} ] ;
+	then
+		mkdir -p ${DESTDIR}/${dir}
+	fi
 done
 
-# Install pcscd daemon, drivers, conf file, and include libgcc as well since
-# pcscd utilizes pthread_cancel
-mkdir -p ${DESTDIR}/lib
+# Install pcscd daemon, drivers, conf file
 copy_exec /usr/sbin/pcscd /sbin
-if [ -e /lib/*`uname -i`*/libgcc_s.so.1 ]
-then
-  copy_exec /lib/*`uname -i`*/libgcc_s.so.1 /lib
-else
-  copy_exec /lib/libgcc_s.so.1 /lib
-fi
-if [ -e /lib/*`uname -i`*/libpcsclite.so.1 ]
-then
-  copy_exec /lib/*`uname -i`*/libpcsclite.so.1 /lib
-else
-  copy_exec /lib/libpcsclite.so.1 /lib
-fi
-if [ -e /usr/lib/*`uname -i`*/libusb-1.0.so.0 ]
-then
-  copy_exec /usr/lib/*`uname -i`*/libusb-1.0.so.0 /usr/lib
-else if [ -e /usr/lib/libusb-1.0.so.0 ]
-then
-  copy_exec /usr/lib/libusb-1.0.so.0 /usr/lib
+
+copy_plugin libpcsclite.so.1
+
+find /usr/lib/pcsc ! -type d |
+while read PSCS_FILE; do
+  if [ ! -x ${PSCS_FILE} ] && [ ${PSCS_FILE} = ${PSCS_FILE%.so} ]; then
+    [ -d ${DESTDIR}${PSCS_FILE%/*} ] || \
+    mkdir -p ${DESTDIR}${PSCS_FILE%/*}
+    cp -pL $PSCS_FILE ${DESTDIR}${PSCS_FILE%/*}
+  else
+    copy_exec $PSCS_FILE
+  fi
+done
+
+if [ -d /etc/reader.conf.d ]; then
+    cp -pLR /etc/reader.conf.d ${DESTDIR}/etc/
 fi
-cp -r /usr/lib/pcsc ${DESTDIR}/usr/lib
-if [ -e /etc/reader.conf.d ]
-then
-  cp -Rp /etc/reader.conf.d ${DESTDIR}/etc/
-else
-  cp /etc/reader.conf ${DESTDIR}/etc
+if [ -e /etc/reader.conf ]; then
+    cp -pL /etc/reader.conf ${DESTDIR}/etc/
 fi
 
 # Install opensc commands and conf file
-copy_exec /usr/bin/opensc-tool /bin
-copy_exec /usr/bin/pkcs15-crypt /bin
-cp /etc/opensc/opensc.conf ${DESTDIR}/etc/opensc
+copy_exec /usr/bin/opensc-tool /bin/
+copy_exec /usr/bin/pkcs15-crypt /bin/
+copy_exec /usr/bin/pkcs15-tool /bin/
+cp -pL /etc/opensc/opensc.conf ${DESTDIR}/etc/opensc/
 
 # Install other required utilities
 copy_exec /bin/grep /bin
@@ -82,11 +117,4 @@ copy_exec /usr/bin/scriptor_standalone /bin
 copy_exec /usr/bin/smartauth.sh /bin
 
 # Libraries
-# cp /usr/lib/libltdl.so* ${DESTDIR}/usr/lib
-# cp /lib/libncurses.so.5 ${DESTDIR}/lib
-if [ -e /lib/*`uname -i`*/libncursesw.so.5 ]
-then
-  cp /lib/*`uname -i`*/libncursesw.so.5 ${DESTDIR}/lib
-else
-  cp /lib/libncursesw.so.5 ${DESTDIR}/lib
-fi
+copy_plugin libncursesw.so.[0-9]