svn commit: r204044 - head/release/scripts

[Andrew D. Boyd]

On 19/02/2010 1:45 AM, Ken Smith wrote:
> Author: kensmith
> Date: Thu Feb 18 15:45:43 2010
> New Revision: 204044
> URL: http://svn.freebsd.org/changeset/base/204044
> 
> Log:
>   Provide a script that can be used to create the memstick images.  For now
>   it isn't being integrated into 'make release' because for the forseeable
>   future the memstick images will be identical to what's on the DVD except
>   for which package set is provided.  If/when what's on the memstick diverges
>   from what's on the DVD it would make more sense to generate a "memstick"
>   directory in $CHROOT/R/cdrom and build the memstick image along with the
>   ISO images.
>   
>   Reviewed by:	jhb, ru, Garrett Cooper (yanefbsd at gmail dot com)
> 
> Added:
>   head/release/scripts/make-memstick.sh   (contents, props changed)
> 
> Added: head/release/scripts/make-memstick.sh
> ==============================================================================
> --- /dev/null	00:00:00 1970	(empty, because file is newly added)
> +++ head/release/scripts/make-memstick.sh	Thu Feb 18 15:45:43 2010	(r204044)
> @@ -0,0 +1,83 @@
> +#!/bin/sh
> +#
> +# This script generates a "memstick image" (image that can be copied to a
> +# USB memory stick) from a directory tree.  Note that the script does not
> +# clean up after itself very well for error conditions on purpose so the
> +# problem can be diagnosed (full filesystem most likely but ...).
> +#
> +# Usage: make-memstick.sh <directory tree> <image filename>
> +#
> +# $FreeBSD$
> +#
> +
> +PATH=/bin:/usr/bin:/sbin:/usr/sbin
> +export PATH
> +
> +BLOCKSIZE=10240
> +
> +if [ $# -ne 2 ]; then
> +  echo "make-memstick.sh /path/to/directory /path/to/image/file"
> +  exit 1
> +fi
> +
> +tempfile="${2}.$$"
> +
> +if [ ! -d ${1} ]; then
> +  echo "${1} must be a directory"
> +  exit 1
> +fi
> +
> +if [ -e ${2} ]; then
> +  echo "won't overwrite ${2}"
> +  exit 1
> +fi
> +
> +rm -f ${tempfile}
> +makefs ${tempfile} ${1}
> +if [ $? -ne 0 ]; then
> +  echo "makefs failed"
> +  exit 1
> +fi
> +
> +#
> +# Use $BLOCKSIZE for transfers to improve efficiency.  When calculating
> +# how many blocks to transfer "+ 2" is to account for truncation in the
> +# division and to provide space for the label.
> +#
> +
> +filesize=`stat -f "%z" ${tempfile}`
> +blocks=$(($filesize / ${BLOCKSIZE} + 2))
> +dd if=/dev/zero of=${2} bs=${BLOCKSIZE} count=${blocks}
> +if [ $? -ne 0 ]; then
> +  echo "creation of image file failed"
> +  exit 1
> +fi
> +
> +unit=`mdconfig -a -t vnode -f ${2}`
> +if [ $? -ne 0 ]; then
> +  echo "mdconfig failed"
> +  exit 1
> +fi
> +
> +fdisk -BIq /dev/${unit}
> +if [ $? -ne 0 ]; then
> +  echo "fdisk failed"
> +  exit 1
> +fi
> +
> +bsdlabel -B -w /dev/${unit}
> +if [ $? -ne 0 ]; then
> +  echo "bsdlabel failed"
> +  exit 1
> +fi
> +
> +dd if=${tempfile} of=/dev/${unit}a bs=$BLOCKSIZE conv=sync
> +if [ $? -ne 0 ]; then
> +  echo "copying filesystem into image file failed"
> +  exit 1
> +fi
> +
> +mdconfig -d -u ${unit}
> +
> +rm -f ${tempfile}
> +
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> 

I think trap should be used to clean up the tempfile in the case of
the script exiting before cleaning it up.

-- 
Andrew D. Boyd (decado at gmail.com)