testing

Vagrantfile

@@ -1,5 +1,14 @@
+VAGRANT_BOX=ENV["VAGRANT_BOX"]
+if !VAGRANT_BOX || VAGRANT_BOX == "debian"
+  VAGRANT_BOX = "debian/bullseye64"
+elsif VAGRANT_BOX == "rocky"
+  VAGRANT_BOX = "rockylinux/8"
+elsif VAGRANT_BOX == "centos"
+  VAGRANT_BOX = "centos/7"
+end
+
 Vagrant.configure("2") do |config|
-  config.vm.box = "debian/bullseye64"
+  config.vm.box = VAGRANT_BOX
   config.vm.synced_folder ".", "/vagrant"
   config.vm.network "private_network", type: "dhcp"
   config.vm.provision "shell", path: "build.sh"

build.sh

@@ -11,9 +11,27 @@ TEMPDIR="$(mktemp -d)"
 INSTALL=0
 BUILDDIR="$TEMPDIR/${PACKAGE}_$VERSION-$REVISION"
 
+# Test for distribution of GNU/Linux
+# 0 = unknown
+# 1 = debian
+# 2 = rocky/centos/rhel
+function check_distro {
+  if [ -f /etc/debian_version ]; then echo 1
+  elif [ -f /etc/redhat-release ]; then echo 2
+  else echo 0
+  fi
+}
+
+# Install Linux headers for current debian kernel
+function debian_headers {
+  export DEBIAN_FRONTEND=noninteractive
+  apt-get update
+  apt-get install -y linux-headers-$(uname -r)
+}
+
 # Build debian package
 function build_deb {
-  [ $INSTALL -eq 1 ] && install_headers
+  [ $INSTALL -eq 1 ] && debian_headers
   mkdir -p "$BUILDDIR/usr/src/${PACKAGE}-$VERSION"
   mkdir -p "$BUILDDIR/etc"
   mkdir -p "$BUILDDIR/DEBIAN"
@@ -24,6 +42,28 @@ function build_deb {
   dpkg-deb --build "${PACKAGE}_$VERSION-$REVISION"
 }
 
+# Install Linux headers for current rhel kernel
+function rhel_headers {
+  KERNEL_VERSION="$(uname -r | rev | cut -d '.' -f 2- | rev)"
+  yum install -y kernel-headers-"$KERNEL_VERSION" kernel-devel
+}
+
+# Build redhat package
+function build_rpm {
+  EL_VER="$(uname -r | awk 'match($0,/el[0-9]/) {print substr($0, RSTART, RLENGTH)}')"
+  [ $INSTALL -eq 1 ] && rhel_headers
+  yum install -y rpm-build rpmdevtools rpmlint
+  rpmdev-setuptree
+  mkdir -p "$BUILDDIR/${PACKAGE}-${VERSION}"
+  cp -r $SRCDIR/* "$BUILDDIR/${PACKAGE}-${VERSION}"
+  rm -rf ~/rpmbuild/SOURCES/$PACKAGE-$VERSION.tar.gz
+  (cd $BUILDDIR &&
+  tar -czvf ~/rpmbuild/SOURCES/$PACKAGE-$VERSION.tar.gz $PACKAGE-$VERSION)
+  cp $SRCDIR/$PACKAGE.spec ~/rpmbuild/SPECS/
+  rpmlint ~/rpmbuild/SPECS/$PACKAGE.spec &&
+  rpmbuild -bb ~/rpmbuild/SPECS/$PACKAGE.spec
+}
+
 # Display details on module
 function info_mod {
   modinfo "$PACKAGE"
@@ -33,33 +73,45 @@ function info_mod {
   cat /var/log/messages | grep "$PACKAGE"
 }
 
-# Install Linux headers for current kernel
+# Build and install (optional)
-function install_headers {
+function build_install {
-  export DEBIAN_FRONTEND=noninteractive
+  DISTRO="$(check_distro)"
-  apt-get update
+  if [ $DISTRO -eq 0 ]; then
-  apt-get install -y linux-headers-$(uname -r)
+    echo "ERROR: GNU/Linux distribution not detected"
+    exit -1
+  elif [ $DISTRO -eq 1 ]; then
+    build_deb
+    [ $INSTALL -eq 1 ] && apt-get install -y "./${PACKAGE}_$VERSION-$REVISION.deb"
+  elif [ $DISTRO -eq 2 ]; then
+    build_rpm
+    if [ $INSTALL -eq 1 ]; then
+      yum install -y epel-release
+      yum install -y dkms
+      rpm -i "~/rpmbuild/RPMS/noarch/$PACKAGE-$VERSION-$REVISION.$EL_VER.noarch.rpm"
+    fi
+  fi
+  info_mod
 }
 
 # Build and install helloworld module or module(s) in $SCRATCH
-set -x
+function main_routine {
   if [ ! -z "$(ls -Al $SCRATCH | grep -e ^d)" ]; then
     cd "$SCRATCH"
     for d in */ ; do
       if [ -f "$(basename $d)/override.sh" ]; then
         SRCDIR="$(pwd)/$(basename $d)"
         . "$(basename $d)/override.sh"
-      build_deb
+        build_install
-      if [ $INSTALL -eq 1 ]; then
-        apt-get install -y "./${PACKAGE}_$VERSION-$REVISION.deb"
-        info_mod
-      fi
-      cp "./${PACKAGE}_$VERSION-$REVISION.deb" \
-         "$OUTDIR/${PACKAGE}_$VERSION-$REVISION-$(date +%s).deb"
       fi
     done
   else
     INSTALL=1
-  build_deb
+    build_install
-  apt-get install -y "./${PACKAGE}_$VERSION-$REVISION.deb"
+  fi
-  info_mod
+}
+
+# Program starts here unless KERNMOD_MAIN is not 0
+if [ "${KERNMOD_MAIN:-0}" -eq 0 ]; then
+  set -x
+  main_routine
 fi

src/helloworld.spec

@@ -0,0 +1,37 @@
+Name: helloworld
+Version: 0.1
+Release: 1%{?dist}
+Summary: hello, world
+BuildArch: noarch
+
+License: 0BSD
+Source0: %{name}-%{version}.tar.gz
+Requires: dkms
+
+%description
+hello, world example
+
+%prep
+%setup -q
+%build
+%install
+rm -rf $RPM_BUILD_ROOT
+mkdir -p $RPM_BUILD_ROOT/%{_usrsrc}/%{name}-%{version}
+mkdir -p $RPM_BUILD_ROOT/etc
+cp -r usr/src/* $RPM_BUILD_ROOT/%{_usrsrc}/%{name}-%{version}
+cp -r etc/* $RPM_BUILD_ROOT/etc
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%{_usrsrc}/%{name}-%{version}/dkms.conf
+%{_usrsrc}/%{name}-%{version}/helloworld.c
+%{_usrsrc}/%{name}-%{version}/Makefile
+/etc/modules-load.d/%{name}.conf
+
+%post
+dkms add -m %{name} -v %{version}
+dkms build -m %{name} -v %{version}
+dkms install -m %{name} -v %{version}
+modprobe %{name}