sollte erst mal gehen ... mal sehen

5 files changed, 202 insertions, 3 deletions

diff --git a/.gitignore b/.gitignore
index 9ebea17..2025a2e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.ori
 makekernel
+makekernel.conf
 makekernel.8
diff --git a/Makefile b/Makefile
index b939797..0fc6937 100644
--- a/Makefile
+++ b/Makefile
@@ -23,13 +23,14 @@ DESTDIR	 =
 ETCDIR   = /etc
 BINDIR	 = /usr/bin
 MANDIR	 = /usr/share/man
+SRCDIR	 = /usr/src
 
 VERSION  = 0.0
 
-all: makekernel makekernel.8
+all: makekernel makekernel.conf makekernel.8
 
 %: %.in
-	sed "s/#VERSION#/$(VERSION)/; s@#BINDIR#@$(BINDIR)@; s@#ETCDIR#@$(ETCDIR)@" $< > $@
+	sed "s@#VERSION#@$(VERSION)@g; s@#BINDIR#@$(BINDIR)@g; s@#ETCDIR#@$(ETCDIR)@g; s@#SRCDIR#@$(SRCDIR)@g" $< > $@
 
 .PHONY:	install dist clean
 
@@ -39,7 +40,7 @@ install: all
 	install -D -m0644 makekernel.conf $(DESTDIR)$(ETCDIR)/makekernel.conf
 
 clean:
-	rm -f makekernel makekernel.8
+	rm -f makekernel makekernel.conf makekernel.8
 
 dist: clean
 	git status --porcelain 2> /dev/null | grep -q "\S" && (git add .; git commit -m"neue Version: $(VERSION)") || true
diff --git a/makekernel.8.in b/makekernel.8.in
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/makekernel.8.in
diff --git a/makekernel.conf b/makekernel.conf.in
index 32fe109..a5053c0 100644
--- a/makekernel.conf
+++ b/makekernel.conf.in
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+kernelDir=#SRCDIR#/kernel
+
 before_install_hook() {
   mount -o remount,rw /boot
 }
diff --git a/makekernel.in b/makekernel.in
new file mode 100644
index 0000000..d508dac
--- /dev/null
+++ b/makekernel.in
@@ -0,0 +1,195 @@
+#!/bin/bash
+
+set -e
+
+usage () {
+  >&2 echo 'makekernel version #VERSION#'
+  >&2 echo 'usage:'
+  >&2 echo '  makekernel [ -a | --allowDownload ] [ -c $version | --compileVersion=$version ]:'
+  >&2 echo '    download and compile kernel'
+  >&2 echo '      -a | --allowDownload:'
+  >&2 echo '        allow to download complete source instead of patch if necessary'
+  >&2 echo '      -c | --compileVersion $version:'
+  >&2 echo '        download and compile version $version instead of most current stable'
+  >&2 echo '  makekernel ( -s | --showVersion ):'
+  >&2 echo '    show version of most current stable kernel'
+  exit 1
+}
+
+dlExVer () {
+  wget -nd "$1.xz"
+  wget -nd "$1.sig"
+  xz -d "$2.xz"
+  if ! gpg --verify $2{.sign,}
+  then
+    >&2 echo 'ERROR: Wrong signature! Closing.'
+    exit 1
+  fi
+  rm "$2.sign"
+}
+
+. #ETCDIR#/makekernel.conf
+
+if [ "$(whoami)" == "root" ]
+then
+  >&2 echo 'ERROR: Do not call as root! Closing.'
+  exit 1
+fi
+
+eval set -- "$(
+  getopt -o ac:s \
+    --long allowDownload \
+    --long compileVersion: \
+    --long showVersion \
+    -n "$(basename "$0")" \
+  -- "$@" || echo usage
+)"
+
+allowDownload=false
+forceVersion=false
+showVersion=false
+
+while true
+do
+  case "$1" in
+    -a|--allowDownload)
+      ${allowDownload} && usage
+      ${showVersion} && usage
+      allowDownload=true
+    ;;
+    -c|--compileVersion)
+      ${forceVersion} && usage
+      ${showVersion} && usage
+      curVer="$2"
+      forceVersion=true
+      shift
+    ;;
+    -s|--showVersion)
+      ${allowDownload} && usage
+      ${forceVersion} && usage
+      ${showVersion} && usage
+      showVersion=true
+    ;;
+    --)
+      shift
+      break
+    ;;
+    *)
+      >&2 echo "ERROR: Option \"$1\" unknown in the end! Closing."
+      usage
+  esac
+  shift
+done
+
+[ $# -ne 0 ] && usage
+
+if ${showVersion}
+then
+  mainVersion="$(
+    curl 'https://cdn.kernel.org/pub/linux/kernel/' 2> /dev/null | \
+      tr '>/' '\n' | \
+      grep '^v.*$' | \
+      sort -V | \
+      tail -n1
+  )"
+  curl "https://cdn.kernel.org/pub/linux/kernel/${mainVersion}/" 2> /dev/null | \
+    tr '<>' '\n\n' | \
+    grep '^linux-.*\.tar\.xz$' | \
+    sed 's/^linux-\(.*\)\.tar\.xz$/\1/' | \
+    sort -V | \
+    tail -n1
+  exit 0
+fi
+
+[ -z "${curVer}" ] && curVer="$("$0" -s)"
+mainVer="$(
+  echo "${curVer}" | \
+    sed 's|^\([0-9]\+\.[0-9]\+\)\(\..*\)\?$|\1|'
+)"
+if [ "${curVer}" == "${mainVer}" ]
+then
+  minPreVer='#invalid#'
+  mainPreVer="${curVer%.*}.$[${curVer##*.}-1]"
+else
+  minPreVer="${mainVer}.$[${curVer##*.}-1]"
+  mainPreVer='#invalid#'
+fi
+
+# possible updates with patches from old sources are:
+#  - "recompile" old source
+#  - "minor" incremental (e.g. 4.7.2 -> 4.7.3)
+#  - make a "stablePatch" (e.g. 4.7 -> 4.7.3)
+#  - "major" incremental (e.g. 4.6 -> 4.7)
+# alternative (if allowed):
+#  - download complete source
+
+if [ -d "${kernelDir}/linux-${curVer}" ]
+then
+  updateType='recompile'
+  patchSrc=''
+  dlSrc=''
+elif [ -d "${kernelDir}/linux-${minPreVer}" ]
+then
+  updateType='minor'
+  srcDir="linux-${minPreVer}"
+  patch="patch-${minPreVer}-${curVer##*.}"
+  patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/incr/${patch}"
+  dlSrc=''
+elif [ -d "${kernelDir}/linux-${mainVer}" ]
+then
+  updateType='stablePatch'
+  srcDir="linux-${mainVer}"
+  patch="patch-${curVer}"
+  patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/${patch}"
+  dlSrc=''
+elif [ -d "${kernelDir}/linux-${mainPreVer}" ]
+then
+  updateType='major'
+  srcDir="linux-${mainPreVer}"
+  patch="patch-${curVer}"
+  patchSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/${patch}"
+  dlSrc=''
+elif ${allowDownload}
+then
+  updateType='download'
+  patchSrc=''
+  dlSrc="https://cdn.kernel.org/pub/linux/kernel/v${curVer%%.*}.x/linux-${curVer}.tar"
+else
+  >&2 echo 'No patch method available and download of complete source not allowed! Closing.'
+  usage
+fi
+
+cd "${kernelDir}"
+echo "update type: ${updateType}"
+
+if [ -n "${patchSrc}" ]
+then
+  dlExVer "${patchSrc}" "${patch}"
+  cp -r "${srcDir}" "linux-${curVer}"
+  cd "linux-${curVer}"
+  patch -p1 -i "../${patch}"
+  rm "../${patch}"
+elif [ -n "${dlSrc}" ]
+then
+  dlExVer "${dlSrc}" "linux-${curVer}.tar"
+  tar -xf "linux-${curVer}.tar"
+  rm "linux-${curVer}.tar"
+fi
+
+cd "linux-${curVer}"
+[ ! -r .config ] && zcat /proc/config.gz > .config
+
+make oldconfig
+make
+grep -q '^# CONFIG_MODULES is not set$' .config || make modules_install
+
+echo 'becoming root ...'
+
+su -c ' \
+  before_install_hook && \
+  make install && \
+  grub-mkconfig -o /boot/grub/grub.cfg && \
+  after_install_hook \
+'
+
+echo 'Success.'