[pacman-dev] [PATCH] bacman - regenerate package from system

Carlo Bersani carlocci at gmail.com
Tue Jun 3 13:25:15 EDT 2008


Il Saturday 31 May 2008 15:23:54 Allan McRae ha scritto:
> Original work by Carlo "carlocci" Bersani with additions by
> Xavier Chantry and Allan McRae
>
> This script rebuilds an already installed package using metadata
> stored into the pacman database and system files.  Replaces the
> outdated re-pacman script
>
> Signed-off-by: Allan McRae <mcrae_allan at hotmail.com>

Hello,
I finally had a while to fix the permissions issue and to include fakeroot 
support.

This is the patch to the commit Allan made
-------------------------------------BEGIN-------------------------------------
--- gitbacman	2008-06-03 19:02:14.000000000 +0200
+++ bacman	2008-06-03 19:16:04.000000000 +0200
@@ -5,7 +5,7 @@
 #   stored into the pacman database and system files
 #
 #   (c) 2008 - locci <carlocci_at_gmail_dot_com>
-#
+#  
 #   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 2 of the License, or
@@ -15,7 +15,7 @@
 #   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/>.
 #
@@ -24,6 +24,15 @@
 readonly progver="0.1.2"
 
 #
+# Fakeroot
+#
+if [ -f /usr/bin/fakeroot -a $EUID -gt 0 ] ; then
+    echo "Entering fakeroot environment"
+    /usr/bin/fakeroot -u -- $progname $1
+    exit $?
+fi
+
+#
 # User Friendliness
 #
 function usage(){
@@ -116,10 +125,9 @@
     case $current in
         %FILES%)
             ret=0
-            if [ -d "/$i" ]; then
-                mkdir "$i" || ret=$?
-            elif [ -f "/$i" ]; then
-                cp -dp "/$i" "$i" || ret=$?
+            if [ -e "/$i" ]; then
+                bsdtar -cnf - "/$i" 2> /dev/null | bsdtar -xpf -
+                ret=${PIPESTATUS[0]}
             else
                 echo "/$i" is missing: this might result in a broken package
             fi
@@ -208,7 +216,7 @@
         # files
         %BACKUP%)
             # strip the md5sum after the tab
-            echo "backup = ${i%%       *}"   >> .PKGINFO
+            echo "backup = ${i%%$'\t'*}"   >> .PKGINFO
         ;;
 
         # depends
@@ -228,6 +236,12 @@
 done
 
 #
+# Fixes owner:group and permissions for .PKGINFO, .CHANGELOG, .INSTALL
+#
+chown root:root $work_dir/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
+chmod 644 $work_dir/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
+
+#
 # Generate the package
 #
 echo Generating the package...
@@ -247,3 +261,4 @@
 exit 0
 
 # vim: set ts=2 sw=2 noet:
+
-------------------------------------END-------------------------------------



And of course the complete script:
-------------------------------------BEGIN-------------------------------------
#!/bin/bash
#
#   bacman: recreate a package from a running system
#   This script rebuilds an already installed package using metadata
#   stored into the pacman database and system files
#
#   (c) 2008 - locci <carlocci_at_gmail_dot_com>
#  
#   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 2 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/>.
#

readonly progname="bacman"
readonly progver="0.1.2"

#
# Fakeroot
#
if [ -f /usr/bin/fakeroot -a $EUID -gt 0 ] ; then
    echo "Entering fakeroot environment"
    /usr/bin/fakeroot -u -- $progname $1
    exit $?
fi

#
# User Friendliness
#
function usage(){
    echo "This program recreates a package using pacman's db and system files"
    echo "Usage:   $progname <installed package name>"
    echo "Example: $progname kernel26"
}

if [ $# -ne 1 ] ; then
    usage
    exit 1
fi

if [ "$1" = "--help" -o "$1" = "-h" ] ; then
    usage
    exit 0
fi

if [ "$1" = "--version" -o "$1" = "-v" ]; then
    echo "$progname version $version"
    echo "Copyright (C) 2008 locci"
    exit 0
fi

#
# Setting environmental variables
#
if [ ! -r /etc/pacman.conf ]; then
    echo Error: unable to read /etc/pacman.conf
    exit 1
fi

eval $(awk '/DBPath/ {print $1$2$3}' /etc/pacman.conf)
pac_db="${DBPath:-/var/lib/pacman/}/local"

if [ ! -r /etc/makepkg.conf ]; then
    echo Error: unable to read /etc/makepkg.conf
    exit 1
fi

source "/etc/makepkg.conf"
if [ -r ~/.makepkg.conf ]; then
    source ~/.makepkg.conf
fi

pkg_arch=${CARCH:-'unknown'}
pkg_dest="${PKGDEST:-$PWD}"
pkg_pkger=${PACKAGER:-'Unknown Packager'}

pkg_name="$1"
pkg_dir="$(echo $pac_db/$pkg_name-[0-9]*)"
pkg_namver="${pkg_dir##*/}"

#
# Checks everything is in place
#
if [ ! -d "$pac_db" ] ; then
    echo Error: pacman database directory ${pac_db} not found
    exit 1
fi

if [ ! -d "$pkg_dir" ] ; then
    echo Error: package ${pkg_name} not found in pacman database
    exit 1
fi

#
# Begin
#
echo Package: ${pkg_namver}
work_dir=$(mktemp -d -p /tmp)
cd $work_dir || exit 1

#
# File copying
#
echo Copying package files...

cat "$pkg_dir"/files |
while read i; do
    if [ -z "$i" ] ; then
        continue
    fi

    if [[ "$i" =~ %[A-Z]*% ]] ; then
        current=$i
        continue
    fi

    case $current in
        %FILES%)
            ret=0
            if [ -e "/$i" ]; then
                bsdtar -cnf - "/$i" 2> /dev/null | bsdtar -xpf -
                ret=${PIPESTATUS[0]}
            else
                echo "/$i" is missing: this might result in a broken package
            fi

            if [ $ret -ne 0 ]; then
                echo Error: unable to create /$i
                exit 1
            fi
        ;;
    esac
done

ret=$?
if [ $ret -ne 0 ]; then
    rm -rf $work_dir
    exit 1
fi

pkg_size=$(du -sk | awk '{print $1 * 1024}')

if [ -f "$pkg_dir/install" ] ; then
    cp "$pkg_dir/install" "$work_dir/.INSTALL"
fi
if  [ -f $pkg_dir/changelog ] ; then
    cp "$pkg_dir/changelog" "$work_dir/.CHANGELOG"
fi

#
# .PKGINFO stuff
#
echo Generating .PKGINFO metadata...
echo "# Generated by $progname $progver"    > .PKGINFO
echo "# $(LC_ALL=C date)"            >> .PKGINFO
echo "#"                    >> .PKGINFO

cat "$pkg_dir"/{desc,files,depends} |
while read i; do
    if [[ -z "$i" ]]; then
        continue;
    fi

    if [[ "$i" =~ %[A-Z]*% ]] ; then
        current=$i
        continue
    fi

    case "$current" in
        # desc
        %NAME%)
            echo "pkgname = $i"    >> .PKGINFO
        ;;
        %VERSION%)
            echo "pkgver = $i"    >> .PKGINFO
        ;;
        %DESC%)
            echo "pkgdesc = $i"    >> .PKGINFO
        ;;
        %URL%)
            echo "url = $i"    >> .PKGINFO
        ;;
        %LICENSE%)
            echo "license = $i"    >> .PKGINFO
        ;;
        %ARCH%)
            echo "arch = $i"    >> .PKGINFO
        ;;
        %BUILDDATE%)
            echo "builddate = $(date -u "+%s")"    >> .PKGINFO
        ;;
        %PACKAGER%)
            echo "packager = $pkg_pkger"        >> .PKGINFO
        ;;
        %SIZE%)
            echo "size = $pkg_size"        >> .PKGINFO
        ;;
        %GROUPS%)
            echo "group = $i"    >> .PKGINFO
        ;;
        %REPLACES%)
            echo "replaces = $i"    >> .PKGINFO
        ;;
        %FORCE%)
            echo "force = true" >> .PKGINFO
        ;;

        # files
        %BACKUP%)
            # strip the md5sum after the tab
            echo "backup = ${i%%$'\t'*}"   >> .PKGINFO
        ;;

        # depends
        %DEPENDS%)
            echo "depend = $i"   >> .PKGINFO
        ;;
        %OPTDEPENDS%)
            echo "optdepend = $i" >> .PKGINFO
        ;;
        %CONFLICTS%)
            echo "conflict = $i" >> .PKGINFO
        ;;
        %PROVIDES%)
            echo "provides = $i"  >> .PKGINFO
        ;;
    esac
done

#
# Fixes owner:group and permissions for .PKGINFO, .CHANGELOG, .INSTALL
#
chown root:root $work_dir/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null
chmod 644 $work_dir/{.PKGINFO,.CHANGELOG,.INSTALL} 2> /dev/null

#
# Generate the package
#
echo Generating the package...

ret=0
bsdtar -czf "$pkg_dest/$pkg_namver-$pkg_arch.tar.gz" $(ls -A) || ret=$?
if [ $ret -ne 0 ]; then
    echo Error: unable to write package to $pkg_dest
    echo Maybe the disk is full or you do not have write access
    exit 1
fi

rm -rf $work_dir

echo Done

exit 0

# vim: set ts=2 sw=2 noet:

-------------------------------------END-------------------------------------




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