[OE-core] [PATCH v2] dpkg, opkg, rpm-postinst: fix overwriting the run-postinstall script

[Laurentiu Palcu]

If multiple package managers are installed in the image, they will
overwrite each other's run-postinsts script, resulting in postinstalls
not beeing run at all at first boot.

What this patch does:
 * checks whether opkg/dpks/rpm is actually used to install
   the packages and, only after, creates the run-postinsts script;
 * brings dpkg recipe in sync with opkg: moves the script creation from
   do_install to postinstall;
 * move creation of run-postinsts script (rpm-postinsts recipe) to the
   postinstall scriptlet in order to better control the creation of the
   script according to the package manager used;

[YOCTO #4231]
[YOCTO #4179]

Signed-off-by: Laurentiu Palcu <laurentiu.palcu at intel.com>
---
Changes in v2:
 * addressed Richard's comment and, instead of using ${IMAGE_PKGTYPE}, check for the
   existence of 'status' file for opkg/dpkg and 'Packages' file, for rpm;

I did tests with all backends as default package managers and another one installed
with CORE_IMAGE_EXTRA_INSTALL. I saw no issues. The default's PM run-postinsts script
is not overwritten.

Thanks,
Laurentiu

 meta/recipes-devtools/dpkg/dpkg.inc        |   23 ++++++++++++++---------
 meta/recipes-devtools/opkg/opkg.inc        |    3 ++-
 meta/recipes-devtools/rpm/rpm-postinsts.bb |   19 ++++++++++++-------
 3 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/meta/recipes-devtools/dpkg/dpkg.inc b/meta/recipes-devtools/dpkg/dpkg.inc
index 6bb1e16..5554920 100644
--- a/meta/recipes-devtools/dpkg/dpkg.inc
+++ b/meta/recipes-devtools/dpkg/dpkg.inc
@@ -39,15 +39,6 @@ POSTLOG ?= "/var/log/postinstall.log"
 REDIRECT_CMD = "${@base_contains('IMAGE_FEATURES', 'debug-tweaks', '>${POSTLOG} 2>&1', '', d)}"
 
 DPKG_INIT_POSITION ?= "98"
-do_install_prepend () {
-	install -d ${D}/${sysconfdir}/rcS.d
-	# this happens at S98 where our good 'ole packages script used to run
-	echo "#!/bin/sh
-dpkg --configure -a ${REDIRECT_CMD}
-rm -f ${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
-" > ${D}/${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
-	chmod 0755 ${D}/${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
-}
 
 do_install_append () {
 	if [ "${PN}" = "dpkg-native" ]; then
@@ -67,6 +58,20 @@ do_install_append_class-native () {
 	done
 }
 
+pkg_postinst_${PN} () {
+#!/bin/sh
+if [ "x$D" != "x" ] && [ -f $D/var/lib/dpkg/status ]; then
+	install -d ${D}/${sysconfdir}/rcS.d
+
+	# this happens at S98 where our good 'ole packages script used to run
+	echo "#!/bin/sh
+dpkg --configure -a ${REDIRECT_CMD}
+rm -f ${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
+" > ${D}/${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
+	chmod 0755 ${D}/${sysconfdir}/rcS.d/S${DPKG_INIT_POSITION}run-postinsts
+fi
+}
+
 PROV = "virtual/update-alternatives"
 PROV_class-native = ""
 
diff --git a/meta/recipes-devtools/opkg/opkg.inc b/meta/recipes-devtools/opkg/opkg.inc
index f9c1202..ff26b04 100644
--- a/meta/recipes-devtools/opkg/opkg.inc
+++ b/meta/recipes-devtools/opkg/opkg.inc
@@ -62,8 +62,9 @@ REDIRECT_CMD = "${@base_contains('IMAGE_FEATURES', 'debug-tweaks', '>${POSTLOG}
 
 pkg_postinst_${PN} () {
 #!/bin/sh
-if [ "x$D" != "x" ]; then
+if [ "x$D" != "x" ] && [ -f $D/var/lib/opkg/status ]; then
 	install -d $D${sysconfdir}/rcS.d
+
 	# this happens at S98 where our good 'ole packages script used to run
 	echo "#!/bin/sh
 opkg-cl configure ${REDIRECT_CMD}
diff --git a/meta/recipes-devtools/rpm/rpm-postinsts.bb b/meta/recipes-devtools/rpm/rpm-postinsts.bb
index fb05ad6..b551c8d 100644
--- a/meta/recipes-devtools/rpm/rpm-postinsts.bb
+++ b/meta/recipes-devtools/rpm/rpm-postinsts.bb
@@ -27,15 +27,17 @@ do_compile() {
 }
 
 do_install() {
-	install -d ${D}/${sysconfdir}/rcS.d
-	# Stop $i getting expanded below...
-	i=\$i
-	cat > ${D}${sysconfdir}/rcS.d/S${POSTINSTALL_INITPOSITION}run-postinsts << EOF
-#!/bin/sh
+	:
+}
 
+pkg_postinst_${PN} () {
+if [ "x$D" != "x" ] && [ -f $D/var/lib/rpm/Packages ]; then
+	install -d $D/${sysconfdir}/rcS.d
+	cat > $D${sysconfdir}/rcS.d/S${POSTINSTALL_INITPOSITION}run-postinsts << "EOF"
+#!/bin/sh
 . /etc/default/rcS
 
-[ -d /etc/rpm-postinsts ] && for i in \`ls /etc/rpm-postinsts/ \`; do
+[ -d /etc/rpm-postinsts ] && for i in `ls /etc/rpm-postinsts/`; do
 	i=/etc/rpm-postinsts/$i
 	echo "Running postinst $i..."
 	if [ -f $i ] && $i ${REDIRECT_CMD}; then
@@ -46,5 +48,8 @@ do_install() {
 done
 rm -f ${sysconfdir}/rcS.d/S${POSTINSTALL_INITPOSITION}run-postinsts 2>/dev/null
 EOF
-	chmod 0755 ${D}${sysconfdir}/rcS.d/S${POSTINSTALL_INITPOSITION}run-postinsts
+	chmod 0755 $D${sysconfdir}/rcS.d/S${POSTINSTALL_INITPOSITION}run-postinsts
+fi
 }
+
+ALLOW_EMPTY_${PN} = "1"
-- 
1.7.9.5