Initial commit

1 files changed, 122 insertions, 0 deletions

diff --git a/alpine-chroot.sh b/alpine-chroot.sh
new file mode 100644
index 0000000..642365e
--- /dev/null
+++ b/alpine-chroot.sh
@@ -0,0 +1,122 @@
+# alpine-chroot - Setup a Alpine Linux installation in a chroot.
+# Copyright (c) 2011- 2012 Fabian Affolter <fabian at affolter-engineering.ch>
+# 
+# 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/>.
+#
+# Most parts of this script are written down at
+# http://wiki.alpinelinux.org/wiki/Setting_up_the_build_environment_in_chroot
+# 
+# coreutils, curl
+
+MIRROR=http://dl-3.alpinelinux.org/alpine
+APK_TOOL=apk-tools-static-2.2.5-r0.apk
+
+usage() {
+        cat <<__EOF__
+usage: mk-alpinechroot [-h] [-d Directory] [-r Release] [-a Architecture]
+
+Setup an Alpine Installation in a chroot
+
+options:
+ -h  Show this help
+ -a  Choice of architecture, default: Host architecture
+ -d  Directory to install the chroot
+ -r  Release of Alpine Linux, default: Latest stable release
+__EOF__
+        exit 1
+}
+
+case $1 in
+	""|"-h"|"--help") usage;;
+esac
+
+while getopts ":h:a:d:r:" opt; do
+    case $opt in
+        h) usage;;
+        a) ARCH="$OPTARG";;
+        d) CHROOT="$OPTARG";;
+        r) RELEASE="$OPTARG";;
+        \?) echo "Invalid option: -$OPTARG" >&2; exit 1;;
+        :) echo "Option -$OPTARG requires an argument." >&2; exit 1;;
+    esac
+done
+
+if [ "$ARCH" = "" ]; then
+	ARCH=`uname -i`
+fi
+
+if [ "$ARCH" != "x86" ] && [ "$ARCH" != "x86_64" ]; then
+    echo "$ARCH not supported. Only x86 and x86_64 are supported."
+    exit 1
+fi
+
+if [ "$CHROOT" = "" ]; then
+	CHROOT="alpinechroot-$RELEASE"
+fi
+
+if [ "$RELEASE" = "" ]; then
+    LATEST=`curl --silent $MIRROR/.latest.txt`
+    RELEASE=${LATEST:31:3}
+fi
+
+# Root has $UID 0
+ROOT_UID=0   
+if [ "$UID" != "$ROOT_UID" ]; then
+    echo "You are not root. Please use su to become root."
+    exit 0
+fi
+
+if [ -d $CHROOT ]; then
+echo "$CHROOT exists already."
+    exit 0
+else
+    mkdir -p $CHROOT
+fi
+
+build_chroot() {
+    curl --silent $MIRROR/v$RELEASE/main/$ARCH/$APK_TOOL -o $APK_TOOL
+    tar -xzf $APK_TOOL
+    ./sbin/apk.static \
+        -X $MIRROR/v$RELEASE/main \
+        -U \
+        --allow-untrusted \
+        --root ././$CHROOT-$RELEASE \
+        --initdb add alpine-base alpine-sdk
+
+    mkdir -p $CHROOT{/root,/etc/apk,/proc}
+    mount --bind /proc $CHROOT/proc
+    mknod -m 0666 $CHROOT/dev/full c 1 7
+    mknod -m 0666 $CHROOT/dev/ptmx c 5 2
+    mknod -m 0644 $CHROOT/dev/random c 1 8
+    mknod -m 0644 $CHROOT/dev/urandom c 1 9
+    mknod -m 0666 $CHROOT/dev/zero c 1 5
+    mknod -m 0666 $CHROOT/dev/tty c 5 0
+    rm -f $CHROOT/dev/null
+    mknod -m 0666 $CHROOT/dev/null c 1 3
+
+    cp /etc/resolv.conf $CHROOT/etc/
+    echo "$MIRROR/v$RELEASE/main" >  $CHROOT/etc/apk/repositories
+
+    # Cleaning up
+    rm -rf sbin
+    rm -f APK_TOOL
+
+    echo " "
+    echo "Your Alpine Linux installation in '$CHROOT' is ready now."
+    echo "To start Alpine chroot, run as root:"
+    echo "  chroot $CHROOT /bin/sh -l"
+    echo " "
+}
+
+build_chroot