From 57c88207c488d0579cb475a248e53b6cadcc737c Mon Sep 17 00:00:00 2001
From: Frank Brehm <frank@brehm-online.com>
Date: Wed, 28 Dec 2016 14:41:15 +0100
Subject: [PATCH] Improved installkernel

---
 installkernel | 121 +++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 106 insertions(+), 15 deletions(-)

diff --git a/installkernel b/installkernel
index 581669b..198f0f3 100755
--- a/installkernel
+++ b/installkernel
@@ -8,10 +8,12 @@ VERSION="2011-10-26"
 
 echo -e "\n$ME:\nFrank Brehm's installkernel script, $VERSION"
 echo "* Arguments:
-kernel version: $1
-kernel image file: $2
-kernel map file: $3
-default install path: $4
+kernel version: 	$1
+kernel image file:	$2
+kernel map file:	$3
+default install path:	$4
+
+current path:   	$( pwd )
 "
 
 #B="/mnt/misc/boot"
@@ -21,6 +23,8 @@ KERNEL_IMAGE=$2
 KERNEL_MAPFILE=$3
 DEF_INSTALL_PATH=$4
 
+SIMULATE='n'
+
 was_mounted='y'
 
 # check we have a valid kernel target directory
@@ -50,6 +54,16 @@ else
 fi
 
 i=0
+for f in $( ls -1 -tr "${BOOT_DIR}/config-${KERNEL_VERSION}"* 2>/dev/null || true ) ; do
+    if [[ ! -f "${f}" ]] ; then
+        break
+    fi
+    j=$( echo "${f}" | sed -e "s|${BOOT_DIR}/config-${KERNEL_VERSION}-||" )
+    if [[ -z "${j}" ]] ; then
+        continue
+    fi
+    i=$(( $j + 0 ))
+done
 TARGET_CONFIG_BOOT=$( printf "%s/config-%s-%02d" "${BOOT_DIR}" "${KERNEL_VERSION}" "${i}" )
 while [[ -f "${TARGET_CONFIG_BOOT}" ]] ; do
     i=$(( i + 1 ))
@@ -57,7 +71,11 @@ while [[ -f "${TARGET_CONFIG_BOOT}" ]] ; do
 done
 
 echo "  CP      ${DOT_CONFIG} -> ${TARGET_CONFIG_BOOT}"
-cp -p "${DOT_CONFIG}" "${TARGET_CONFIG_BOOT}"
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          cp -p \"${DOT_CONFIG}\" \"${TARGET_CONFIG_BOOT}\""
+else
+    cp -p "${DOT_CONFIG}" "${TARGET_CONFIG_BOOT}"
+fi
 
 if [[ ! -d /etc/kernel-config ]] ; then
     echo "  MKDIR   /etc/kernel-config"
@@ -65,6 +83,16 @@ if [[ ! -d /etc/kernel-config ]] ; then
 fi
 
 i=0
+for f in $( ls -1 -tr "/etc/kernel-config/config-${KERNEL_VERSION}"* 2>/dev/null || true ) ; do
+    if [[ ! -f "${f}" ]] ; then
+        break
+    fi
+    j=$( echo "${f}" | sed -e "s|/etc/kernel-config/config-${KERNEL_VERSION}-||" )
+    if [[ -z "${j}" ]] ; then
+        continue
+    fi
+    i=$(( $j + 0 ))
+done
 TARGET_CONFIG_ETC=$( printf "%s/config-%s-%02d" "/etc/kernel-config" "${KERNEL_VERSION}" "${i}" )
 while [[ -f "${TARGET_CONFIG_ETC}" ]] ; do
     i=$(( i + 1 ))
@@ -72,7 +100,11 @@ while [[ -f "${TARGET_CONFIG_ETC}" ]] ; do
 done
 
 echo "  CP      ${DOT_CONFIG} -> ${TARGET_CONFIG_ETC}"
-cp -p "${DOT_CONFIG}" "${TARGET_CONFIG_ETC}"
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          cp -p \"${DOT_CONFIG}\" \"${TARGET_CONFIG_ETC}\""
+else
+    cp -p "${DOT_CONFIG}" "${TARGET_CONFIG_ETC}"
+fi
 
 if [[ -n "$KBUILD_OUTPUT_PREFIX" && -d $KBUILD_OUTPUT_PREFIX/$KERNEL_VERSION ]] ; then
     LINUX_SRC_DIR=$KBUILD_OUTPUT_PREFIX/$KERNEL_VERSION
@@ -81,6 +113,16 @@ else
 fi
 
 i=0
+for f in $( ls -1 -tr "${BOOT_DIR}/bzImage-${KERNEL_VERSION}"* 2>/dev/null || true ) ; do
+    if [[ ! -f "${f}" ]] ; then
+        break
+    fi
+    j=$( echo "${f}" | sed -e "s|${BOOT_DIR}/bzImage-${KERNEL_VERSION}-||" )
+    if [[ -z "${j}" ]] ; then
+        continue
+    fi
+    i=$(( $j + 0 ))
+done
 image_version=$( printf "%s-%02d" "${KERNEL_VERSION}" "${i}" )
 bzimage_inst="${BOOT_DIR}/bzImage-${image_version}"
 kernel_inst="${BOOT_DIR}/kernel-${image_version}"
@@ -109,13 +151,25 @@ else
     test -f $KERNEL_MAPFILE || exit 1
 fi
 
-cp -p $LINUX_SRC_DIR$EX/$KERNEL_IMAGE "${bzimage_inst}"
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          cp -p \"${LINUX_SRC_DIR}${EX}/${KERNEL_IMAGE}\" \"${bzimage_inst}\""
+else
+    cp -p "${LINUX_SRC_DIR}${EX}/${KERNEL_IMAGE}" "${bzimage_inst}"
+fi
 
 echo "  LN      ${bzimage_inst} -> ${kernel_inst}"
-ln "${bzimage_inst}" "${kernel_inst}"
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          ln \"${bzimage_inst}\" \"${kernel_inst}\""
+else
+    ln "${bzimage_inst}" "${kernel_inst}"
+fi
 
 echo "  INSTALL ${mapfile_inst}"
-cp -p $KERNEL_MAPFILE "${mapfile_inst}"
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          cp -p \"${KERNEL_MAPFILE}\" \"${mapfile_inst}\""
+else
+    cp -p "${KERNEL_MAPFILE}" "${mapfile_inst}"
+fi
 
 case $KERNEL_VERSION in
     *-gentoo*)
@@ -132,24 +186,61 @@ TARG_LAST=${TARG}-last
 if [[ -L $BOOT_DIR/bzImage${TARG_CUR} ]] ; then
     IMG_LAST=$(readlink $BOOT_DIR/bzImage${TARG_CUR})
     echo "  LN      $BOOT_DIR/bzImage${TARG_LAST}"
-    ln -sf ${IMG_LAST} $BOOT_DIR/bzImage${TARG_LAST}
+    if [[ "${SIMULATE}" == "y" ]] ; then
+        echo "          ln -sf ${IMG_LAST} $BOOT_DIR/bzImage${TARG_LAST}"
+    else
+        ln -sf ${IMG_LAST} $BOOT_DIR/bzImage${TARG_LAST}
+    fi
 fi
 
 echo "  LN      $BOOT_DIR/bzImage${TARG_CUR}"
-ln -sf "bzImage-${image_version}" $BOOT_DIR/bzImage${TARG_CUR}
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          ln -sf \"bzImage-${image_version}\" $BOOT_DIR/bzImage${TARG_CUR}"
+else
+    ln -sf "bzImage-${image_version}" $BOOT_DIR/bzImage${TARG_CUR}
+fi
 
 if [[ -L $BOOT_DIR/System${TARG_CUR}.map ]] ; then
-    IMG_LAST=$(readlink $BOOT_DIR/System${TARG_CUR}.map)
+    SYSTEM_MAP_LAST=$(readlink $BOOT_DIR/System${TARG_CUR}.map)
     echo "  LN      $BOOT_DIR/System${TARG_LAST}.map"
-    ln -sf $IMG_LAST $BOOT_DIR/System${TARG_LAST}.map
+    if [[ "${SIMULATE}" == "y" ]] ; then
+        echo "          ln -sf ${SYSTEM_MAP_LAST} $BOOT_DIR/System${TARG_LAST}.map"
+    else
+        ln -sf $SYSTEM_MAP_LAST $BOOT_DIR/System${TARG_LAST}.map
+    fi
 fi
 
 echo "  LN      $BOOT_DIR/System${TARG_CUR}.map"
-ln -sf "System.map-${image_version}" $BOOT_DIR/System${TARG_CUR}.map
+if [[ "${SIMULATE}" == "y" ]] ; then
+    echo "          ln -sf \"System.map-${image_version}\" $BOOT_DIR/Sytem${TARG_CUR}.map"
+else
+    ln -sf "System.map-${image_version}" $BOOT_DIR/System${TARG_CUR}.map
+fi
+
+if [[ -x "/usr/bin/genkernel" && -f "/etc/kernel-config/do-genkernel" ]] ; then
+    initrd_src=$( printf "initramfs-genkernel-x86_64-%s" "${KERNEL_VERSION}" )
+    initrd_tgt="initramfs-genkernel-x86_64-${image_version}"
+    echo "  INITRD  ${initrd_src}"
+    if [[ "${SIMULATE}" == "y" ]] ; then
+        echo "          /usr/bin/genkernel --kerneldir=. --install initramfs"
+    else
+        /usr/bin/genkernel --kerneldir=. --install initramfs || exit $?
+    fi
+    if [[ "${SIMULATE}" != "y" && ! -f "$BOOT_DIR/${initrd_src}" ]] ; then
+        echo "File '$BOOT_DIR/${initrd_src}' not found." >&2
+        exit 6
+    fi
+    echo "  MV      ${initrd_src} -> ${initrd_tgt}"
+    if [[ "${SIMULATE}" == "y" ]] ; then
+        echo "          mv -i \"$BOOT_DIR/${initrd_src}\" \"$BOOT_DIR/${initrd_tgt}\""
+    else
+        mv -i "$BOOT_DIR/${initrd_src}" "$BOOT_DIR/${initrd_tgt}" </dev/null || exit $?
+    fi
+fi
 
 if [ "${was_mounted}" = "n" ] ; then
     echo "  UMOUNT  ${BOOT_DIR}"
-    umount ${BOOT_DIR}
+    echo "          Don't forget un unmount '${BOOT_DIR}' manually!"
 fi
 
 # vim: ts=4 expandtab
-- 
2.39.5