__dest=/
__pb_mount_dir=/var/petitboot/mnt/dev/
-plugin_dev_meta=pb-plugin.conf
-plugin_installed_meta_dir=/etc/preboot-plugins/
+__plugin_basedir=/tmp/
+plugin_file=pb-plugin.cpio.gz
+plugin_meta=pb-plugin.conf
+plugin_meta_dir=etc/preboot-plugins/
+plugin_meta_path=$plugin_meta_dir$plugin_meta
usage()
{
Usage: $0 <command>
Where <command> is one of:
- install <FILE|URL> - install plugin from FILE/URL
+ run <FILE|URL> - run plugin from FILE/URL
scan - look for available plugins on attached devices
- list - list currently-installed plugins
create <DIR> - create a new plugin archive from DIR
EOF
}
echo " (version $PLUGIN_VERSION)"
}
-do_install()
+__run_init()
{
- local url
+ local base dir
+
+ base=$1
+
+ for dir in etc dev sys proc
+ do
+ mkdir -p $base/$dir
+ done
+
+ cp /etc/resolv.conf $base/etc
+ mount -o bind /dev $base/dev
+ mount -o bind /sys $base/sys
+ mount -o bind /proc $base/proc
+}
+
+__run_cleanup()
+{
+ local base
+
+ base=$1
+
+ [ -e $base/dev/null ] && umount $base/dev
+ [ -e $base/sys/kernel ] && umount $base/sys
+ [ -e $base/proc/stat ] && umount $base/proc
+ rm -rf $base
+}
+
+do_run()
+{
+ local url executable
url=$1
+ executable=$2
if [ -z "$url" ]
then
exit 1
fi
- if [ ! -d "$__dest" ]
- then
- echo "error: destination directory '$__dest' doesn't exist" >&2
- exit 1
- fi
-
- if [ ! -w "$__dest" ]
- then
- echo "error: destination directory isn't writeable" >&2
- exit 1
- fi
-
name=${url##*/}
if is_url "$url"
echo
sha256sum "$file" | cut -f1 -d' '
echo
- echo "Do you want to install into the pre-boot environment? (y/N)"
+ echo "Do you want to run this plugin? (y/N)"
read resp
case $resp in
;;
esac
+ __dest=$(mktemp -d)
gunzip -c "$file" | ( cd $__dest && cpio -i -d)
if [ $? -ne 0 ]
then
echo "error: Failed to extract archive $url, exiting"
+ rm -rf $__dest
exit 1
fi
+
+ . $__dest/$plugin_meta_path
+
+ (
+ executable=${PLUGIN_EXECUTABLE:-$executable}
+
+ __run_init $__dest
+
+ printf "Entering plugin\n"
+ plugin_info
+
+ chroot $__dest $executable
+
+ printf "\nExiting plugin & cleaning up\n"
+ __run_cleanup $__dest
+ )
+
}
do_scan()
{
- local found
+ local found dev plugin_path __meta_tmp
found=0
for mnt in $__pb_mount_dir/*
do
dev=$(basename $mnt)
- metafile="$mnt/$plugin_dev_meta"
- [ -e "$metafile" ] || continue
+ plugin_path="$mnt/$plugin_file"
+
+ [ -e "$plugin_path" ] || continue
+
+ # extract plugin metadata to a temporary directory
+ __meta_tmp=$(mktemp -d)
+ [ -d $__meta_tmp ] || continue
+ gunzip -c "$plugin_path" |
+ (cd $__meta_tmp &&
+ cpio -i -d $plugin_meta_path 2>/dev/null)
+ if ! [ $? = 0 -a -e "$plugin_path" ]
+ then
+ rm -rf $__meta_tmp
+ continue
+ fi
+
(
- . $metafile
+ . $__meta_tmp/$plugin_meta_path
+
printf "Plugin found on %s:\n" $dev
plugin_info
printf "\n"
- printf "To install this plugin, run:\n"
- printf " $0 install $mnt/$PLUGIN_FILE\n"
+ printf "To run this plugin:\n"
+ printf " $0 run $plugin_path\n"
printf "\n"
)
+ rm -rf $__meta_tmp
found=1
done
fi
}
-do_list()
-{
- local found
- found=0
- for meta in $plugin_installed_meta_dir/*
- do
- [ -e "$meta" ] || continue
- [ $found = 0 ] && printf "Installed plugins:\n"
- found=1
- (
- . $meta
- plugin_info
- echo
- )
- done
-
- if [ "$found" = 0 ]
- then
- echo "No plugins installed"
- fi
-}
-
guided_meta()
{
local vendorname vendorshortname
local pluginname pluginnhortname
- local version date
- local dir
+ local version date executable
+ local file
- dir=$1
+ file=$1
cat <<EOF
EOF
read version
+cat <<EOF
+
+Enter the full path (within the plugin root) to the plugin executable file.
+This will be the default action when the plugin is run. (eg /usr/bin/my-util)
+EOF
+ read executable
+
date=$(date +%Y-%m-%d)
- mkdir -p $dir
+ mkdir -p $(dirname $file)
- cat <<EOF > $dir/$vendorshortname-$pluginshortname
+ cat <<EOF > $file
PLUGIN_VENDOR='$vendorname'
PLUGIN_NAME='$pluginname'
PLUGIN_VERSION='$version'
PLUGIN_DATE='$date'
+PLUGIN_EXECUTABLE='$executable'
EOF
}
do_create()
{
- local src found meta_dir_abs meta_file
+ local src meta_dir_abs meta_file
src=$1
if [ -z "$src" ]
exit 1
fi
- meta_dir_abs="$src/$plugin_installed_meta_dir"
- found=0
- for meta in $meta_dir_abs/*
- do
- [ -e "$meta" ] || continue
- found=$(($found+1))
- meta_file=$meta
- done
+ meta_file=$src/$plugin_meta_path
- if [ $found = 0 ]
+ if [ ! -e $meta_file ]
then
echo "No plugin metadata file found. " \
"Would you like to create one? (Y/n)"
exit 1
;;
esac
- guided_meta $meta_dir_abs || exit
- meta_file=$meta_dir_abs/*
- fi
-
- if [ $found -gt 1 ]
- then
- echo "error: Multiple metadata files found in $meta_dir_abs" >&2
- exit 1
+ guided_meta $meta_file || exit
fi
# Sanity check metadata file
echo "error: no PLUGIN_DATE defined in metadata" &>2
exit 1
fi
+ if [ ! -n "$PLUGIN_EXECUTABLE" ]
+ then
+ echo "error: no PLUGIN_EXECUTABLE defined in metadata" \
+ &>2
+ exit 1
+ fi
) || exit 1
- outfile=pb-plugin.cpio.gz
+ outfile=$plugin_file
(
cd $src
find -mindepth 1 | cpio -o -Hnewc -v
- ) | gzip -c > pb-plugin.cpio.gz
-
- cp $meta_file $plugin_dev_meta
- echo "PLUGIN_FILE='$outfile'" >> $plugin_dev_meta
+ ) | gzip -c > $outfile
echo
echo "Plugin metadata:"
cat <<EOF
Plugin created in:
$outfile
-
-Metadata in:
- $plugin_dev_meta
-If you rename $outfile (or distribute it in a non-root directory), then
-also update the PLUGIN_FILE variable in $plugin_dev_meta.
+Ship this file in the top-level-directory of a USB device or CD to have it
+automatically discoverable by 'pb-plugin scan'.
EOF
}
{
__pb_mount_dir="$test_tmpdir/mnt"
mnt_dir="$__pb_mount_dir/sda"
- mkdir -p $mnt_dir
+ mkdir -p $mnt_dir/$plugin_meta_dir
(
echo "PLUGIN_NAME=test"
echo "PLUGIN_VERSION=1"
- echo "PLUGIN_FILE=data/pb-plugin.cpio.gz"
- ) > $mnt_dir/$plugin_dev_meta
+ echo "PLUGIN_EXECUTABLE=/bin/sh"
+ ) > $mnt_dir/$plugin_meta_path
+ (
+ cd $mnt_dir;
+ find -mindepth 1 | cpio -o -Hnewc 2>/dev/null
+ ) | gzip -c > $mnt_dir/$plugin_file
do_scan | grep -q 'test 1'
rc=$?
test_empty_scan()
{
+ __pb_mount_dir="$test_tmpdir/mnt"
+ mkdir -p $__pb_mount_dir
do_scan | grep -q "No plugins"
}
test_tmpdir="$tests_tmpdir/$n"
mkdir "$test_tmpdir"
- __test_dest="$test_tmpdir/base"
- mkdir "$__test_dest"
- [ -d "$__test_dest" ] || exit 1
- __dest=$__test_dest
}
test_teardown()
}
case "$1" in
-install)
+run)
shift
- do_install $@
+ do_run $@
;;
scan)
shift
do_scan $@
;;
-list)
- shift
- do_list $@
- ;;
create)
shift
do_create $@
projects / petitboot / blobdiff