- no longer need to remove initramfs-tools/modules on postrm

ubuntu sync:
- change prereqs policy
- add check_minver
- use it in update-initramfs
- fix version to use in update-initramfs

1 files changed, 39 insertions, 0 deletions

diff --git a/scripts/functions b/scripts/functions
index 96a5577..35485c6 100644
--- a/scripts/functions
+++ b/scripts/functions
@@ -91,6 +91,14 @@ set_initlist()
 reduce_satisfied()
 {
 	deplist="$(render array_${1})"
+	unset tmpdeplist
+	for rs_y in ${deplist}; do
+		if [ ! -f ${initdir}/${rs_y} ]; then
+			continue
+		fi
+		tmpdeplist="${tmpdeplist} ${rs_y}"
+	done
+	deplist=${tmpdeplist}
 	for rs_x in ${runlist}; do
 		pop_list_item ${rs_x} ${deplist}
 		deplist=${tmppop}
@@ -176,6 +184,37 @@ run_scripts()
 	call_scripts
 }
 
+check_minkver()
+{
+	curversion=${1}
+	initdir=${2}
+	set_initlist
+	if [ -z ${initdir} ]; then
+		DPKG_ARCH=`dpkg --print-installation-architecture`
+		case ${DPKG_ARCH} in
+			ia64|hppa)
+				minversion="2.6.15"
+			;;
+			*)
+				minversion="2.6.12"
+			;;
+		esac
+		if dpkg --compare-versions "${curversion}" lt "${minversion}"; then
+			echo "W: kernerl ${curversion} too old for initramfs on ${DPKG_ARCH}" >&2
+			echo "W: not generating requested initramfs for kernel ${curversion}" >&2
+			exit 2
+		fi
+	fi
+	[ -z ${initdir} ] || for cm_x in ${initlist}; do
+		tmp=$(eval echo $(grep ^MINKVER ${initdir}/${cm_x} | cut -d'=' -f2))
+		if dpkg --compare-versions "${curversion}" lt "${tmp}"; then
+			echo "W: ${cm_x} hook script requires at least kernel version ${tmp}" >&2
+			echo "W: not generating requested initramfs for kernel ${curversion}" >&2
+			exit 2
+		fi
+	done
+}
+
 # Load custom modules first
 load_modules()
 {