L4Re/departure

Annotated test_files/mk_e2test.sh

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2022-06-30 Paul Boddie file changeset files shortlog Added missing structure members. mmap-region-flags
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#!/bin/sh
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# Make a test filesystem.
 
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#
 
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# Copyright (C) 2021, 2022 Paul Boddie <paul@boddie.org.uk>
 
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#
 
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# This program is free software; you can redistribute it and/or
 
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# modify it under the terms of the GNU General Public License as
 
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# published by the Free Software Foundation; either version 2 of
 
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# the License, or (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor,
 
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# Boston, MA  02110-1301, USA
 
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PROGNAME=$(basename "$0")
 
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# Handle program options.
 
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if [ "$1" = '-q' ] ; then
 
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    QUIET=$1
 
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    shift 1
 
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else
 
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    QUIET=
 
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fi
 
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PKGDIR=$(realpath "$1")
 
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E2ACCESS_DIR=$(realpath "$2")
 
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TARGET=$(realpath "$3")
 
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shift 3
 
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if [ ! -e "$PKGDIR" ] || [ ! -e "$E2ACCESS_DIR" ] || [ ! "$TARGET" ] ; then
 
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    cat 1>&2 <<EOF
 
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Usage: $PROGNAME [ -q ] <package directory> <e2access directory> <target> [ <program> ... ]
 
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Package directory: $PKGDIR
 
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e2access directory: $E2ACCESS_DIR
 
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Target filesystem: $TARGET
 
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Programs: $*
 
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EOF
 
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    exit 1
 
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fi
 
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# Initialise the program details and environment.
 
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E2ACCESS="$E2ACCESS_DIR"/e2access
 
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export LD_LIBRARY_PATH="$E2ACCESS_DIR"
 
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OPTIONS='-u 1000 -g 1000'
 
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# Define a convenience function for e2access invocation.
 
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e2access()
 
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{
 
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    "$E2ACCESS" $OPTIONS "$TARGET" $*
 
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}
 
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# Make a filesystem for the example.
 
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mkdir tmp_e2test
 
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cd tmp_e2test
 
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# Set a sensible umask.
 
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umask 0022
 
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mkdir -p home/paulb/public
 
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echo "Public!" > home/paulb/public/message
 
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# Set a restrictive umask.
 
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umask 0077
 
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echo "Not public!" > home/paulb/public/message2
 
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mkdir -p home/paulb/private
 
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echo "Private!" > home/paulb/private/message
 
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# Set a permissive umask.
 
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umask 0000
 
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mkdir -p home/paulb/shared
 
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echo "Editable!" > home/paulb/shared/message
 
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# Restore the umask for the remaining files.
 
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umask 0022
 
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mkdir -p home/paulb/many
 
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cd home/paulb/many
 
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# Populate the directory with plenty of files.
 
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for N in `seq 1 400`; do
 
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    echo "Contents of #$N." > "file-$N".txt
 
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done
 
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cd ..
 
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# Put file in the created home directory.
 
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cp "$PKGDIR/../docs/LICENCE.txt" .
 
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# Put some programs in the same place.
 
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for PROGRAM in $* ; do
 
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    cp $(realpath "$PROGRAM") .
 
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done
 
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# Leave the filesystem root.
 
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cd ../..
 
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# Create a filesystem image.
 
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EXTRA=2000
 
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SIZE=$(du -s -k home | cut -f 1)
 
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TOTAL=$(($SIZE + $EXTRA))
 
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dd if=/dev/zero of="$TARGET" bs=1024 count=$TOTAL
 
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if ! $(/sbin/mkfs.ext2 -q "$TARGET") ; then
 
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    exit 1
 
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fi
 
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# Add the directories and files to the image.
 
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for DIR in home/paulb home/paulb/private home/paulb/public home/paulb/shared home/paulb/many ; do
 
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    e2access mkdir "$DIR"
 
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    e2access copy-in $(find "$DIR" -maxdepth 1 -type f | sort) "$DIR"
 
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done
 
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# Leave the root of the filesystem.
 
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cd ..
 
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if [ ! "$QUIET" ] ; then
 
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    e2access ls ''
 
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    e2access ls 'home'
 
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    e2access ls 'home/paulb'
 
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    e2access ls 'home/paulb/many'
 
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    e2access ls 'home/paulb/private'
 
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    e2access ls 'home/paulb/public'
 
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    e2access ls 'home/paulb/shared'
 
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fi
 
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rm -r tmp_e2test
 
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