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|
#!/bin/bash -
# febootstrap-to-supermin
# (C) Copyright 2009 Red Hat Inc.
#
# 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Written by Richard W.M. Jones <rjones@redhat.com>
unset CDPATH
TEMP=`getopt \
-o '' \
--long help \
-n febootstrap-to-supermin -- "$@"`
if [ $? != 0 ]; then
echo "febootstrap-to-supermin: problem parsing the command line arguments"
exit 1
fi
eval set -- "$TEMP"
usage ()
{
echo "Usage: febootstrap-to-supermin DIR supermin.img hostfiles.txt"
echo "Please read febootstrap-to-supermin(8) man page for more information."
}
while true; do
case "$1" in
--help)
usage
exit 0;;
--)
shift
break;;
*)
echo "Internal error!"
exit 1;;
esac
done
if [ $# -ne 3 ]; then
usage
exit 1
fi
set -e
# Create a temporary directory, make sure it gets cleaned up at the end.
tmpdir=$(mktemp -d)
remove_tmpdir ()
{
status=$?
rm -rf "$tmpdir" && exit $status
}
trap remove_tmpdir EXIT
# Get the complete list of files and directories in the appliance.
(cd "$1" > /dev/null && find) > "$tmpdir/files"
exec 5>"$tmpdir/keep" # Files/dirs we will keep in supermin.img
exec 6>$3 # hostfiles.txt (output)
exec 7<"$tmpdir/files"
while read path <&7; do
dir=$(dirname "$path")
file=$(basename "$path")
# Ignore fakeroot.log.
if [ "$path" = "./fakeroot.log" ]; then
:
# Kernel modules are always copied in from the host, including all
# the dependency information files.
elif [[ "$path" =~ '^\./lib/modules/' ]]; then
:
# All we're going to keep are the special files /init, the daemon,
# configuration files (/etc), devices and modifiable stuff (/var).
elif [ "$path" = "./init" ]; then
echo "$path" >&5
elif [[ "$path" =~ '^\./etc' || "$path" =~ '^./dev' || "$path" =~ '^\./var' ]]; then
echo "$path" >&5
# Always write directory names to both output files.
elif [ -d "$path" ]; then
echo "$path" >&5
echo "$path" >&6
# Some libraries need fixed version numbers replaced by wildcards.
elif [[ "$file" =~ '^ld-[.0-9]+\.so$' ]]; then
echo "$dir/ld-*.so" >&6
# libfoo-1.2.3.so
elif [[ "$file" =~ '^lib(.*)-[-.0-9]+\.so$' ]]; then
echo "$dir/lib${BASH_REMATCH[1]}-*.so" >&6
# libfoo-1.2.3.so.1.2.3 (but NOT '*.so.N')
elif [[ "$file" =~ '^lib(.*)-[-.0-9]+\.so\.([0-9]+)\.' ]]; then
echo "$dir/lib${BASH_REMATCH[1]}-*.so.${BASH_REMATCH[2]}.*" >&6
# libfoo.so.1.2.3 (but NOT '*.so.N')
elif [[ "$file" =~ '^lib(.*)\.so\.([0-9]+)\.' ]]; then
echo "$dir/lib${BASH_REMATCH[1]}.so.${BASH_REMATCH[2]}.*" >&6
else
# Anything else comes from the host directly.
echo "$path" >&6
fi
done
# Close output files.
exec 5>&-
exec 6>&-
# Now run febootstrap-to-initramfs to construct the supermin
# appliance.
if ! febootstrap-to-initramfs --nocompress --files="$tmpdir/keep" "$1" > "$2"
then
rm -f "$2"
fi
|
