#!/bin/bash
#  Copyright (C) 2009-2010  Matías A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

V=164
ARCH=${ARCH:-i486}
B=3

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-Os}

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j4}

PKG=${TMP}/package-udev

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/udev-${V}
lzip -cd ${CWD}/udev-${V}.tar.lz | tar -xvf - -C "$TMP"

cd ${TMP}/udev-${V}

# Apply patches:
zcat ${CWD}/patches/udev-50-default.rules-ide-cdrom-symlink.diff.gz | \
 patch -p0 --verbose

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
 \( -perm 2777 -o \
    -perm 777  -o \
    -perm 775  -o \
    -perm 711  -o \
    -perm 555  -o \
    -perm 511     \
 \) -exec chmod 755 {} + \
  -o \
 \( -perm 666 -o \
    -perm 664 -o \
    -perm 600 -o \
    -perm 444 -o \
    -perm 440 -o \
    -perm 400    \
 \) -exec chmod 644 {} +

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --sysconfdir=/etc \
 --sbindir=/sbin \
 --with-rootlibdir=/lib \
 --libexecdir=/lib/udev \
 --mandir=/usr/man \
 --docdir=/usr/doc/udev-${V} \
 --build=${ARCH}-dragora-linux-gnu

make $JOBS
make install DESTDIR=$PKG

# Increments a little the security:
for file in ${PKG}/sbin/* ; do
  if [[ -x $file && ! -L $file ]]; then
    chmod -v 750 $file
  fi
done

# No.. don't smoke crack or paco!:
if [[ -d ${PKG}/usr/share/pkgconfig ]]; then
  mkdir -p ${PKG}/usr/lib/pkgconfig
  mv ${PKG}/usr/share/pkgconfig/* ${PKG}/usr/lib/pkgconfig/
  rmdir ${PKG}/usr/share/pkgconfig || true
fi

# Strip binaries & libraries:
( cd $PKG
  find . -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
   cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Creates some devices and directories that Udev cannot handle due to
# them being required very early in the boot process (thanks to LFS):
mkdir -p ${PKG}/lib/{firmware,udev/devices/{pts,shm}}
mknod -m 666 ${PKG}/lib/udev/devices/null c 1 3
mknod -m 600 ${PKG}/lib/udev/devices/kmsg c 1 11
( cd ${PKG}/lib/udev/devices
  ln -sf /proc/self/fd .
  ln -sf /proc/self/fd/0 stdin
  ln -sf /proc/self/fd/1 stdout
  ln -sf /proc/self/fd/2 stderr
  ln -sf /proc/kcore core
)

# Additional links.  This is for the multipath:
( cd ${PKG}/sbin ; ln -sf /lib/udev/scsi_id . )
# Set permissions:
( cd ${PKG}/lib/udev ; chmod -v 750 scsi_id )

# Add our custom rules:
mkdir -p ${PKG}/etc/udev/rules.d
cat ${CWD}/rules.d/55-dragora.rules > ${PKG}/etc/udev/rules.d/55-dragora.rules

# Copy our init script "rc.udev":
mkdir -p ${PKG}/etc/rc.d
zcat ${CWD}/rc.udevd.gz > ${PKG}/etc/rc.d/rc.udevd.new
chown 0:0 ${PKG}/etc/rc.d/rc.udevd.new
chmod 755 ${PKG}/etc/rc.d/rc.udevd.new

# Handle config file:
mv ${PKG}/etc/udev/udev.conf{,.new}

mkdir -p ${PKG}/etc/modprobe.d
cat << "EOF" > ${PKG}/etc/modprobe.d/blacklist.conf.new
# This is the blacklist file for kernel modules.
#
# Put here your modules that you don't want to load.
#
# Example:  blacklist <module-name>
#


EOF

# Compress manpages:
gzip -9N ${PKG}/usr/man/man?/*

# Add the documentation:
mkdir -p ${PKG}/usr/doc/udev-${V}
cp -a \
 COPYING ChangeLog NEWS README TODO \
 ${PKG}/usr/doc/udev-${V}

# Copy the description files:
mkdir -p ${PKG}/description
cp ${CWD}/description/* ${PKG}/description

# Add post-install script:
mkdir -p ${PKG}/install
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

cd $PKG
makepkg -l ${OUT}/udev-${V}-${ARCH}-${B}.tlz