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#! /bin/bash
# Recursively list Android image directory.
set -eu
set -o pipefail
function die() { format=$1; shift; printf "$format\n" "$@"; exit 1; }
# Figure out the filer utility.
declare filer=
[[ -z "${ANDROID_HOST_OUT:-}" ]] || filer=${ANDROID_HOST_OUT}/bin/debugfs_static
if [[ "${1:-}" =~ --debugfs_path=(.*) ]]; then
filer=${BASH_REMATCH[1]}
shift
fi
if [[ -z "${filer:-}" ]]; then
maybefiler="$(dirname $0)/debugfs_static"
[[ ! -x "$maybefiler" ]] || filer="$maybefiler"
fi
(( $# >0 )) || die "%s [--debugfs_path=<path>] IMAGE" "$0"
[[ -n "${filer:-}" ]] || die "cannot locate 'debugfs' executable: \
--debugfs_path= is missing, ANDROID_HOST_OUT is not set, \
and 'debugfs_static' is not colocated with this script"
declare -r image="$1"
function dolevel() {
printf "%s/\n" "$1"
# Each line of the file output consists of 6 fields separated with '/'.
# The second one contains the file's attributes, and the fifth its name.
$filer -R "ls -l -p $1" "$image" 2>/dev/null |\
sed -nr 's|^/.*/(.*)/.*/.*/(.+)/.*/$|\2 \1|p' | LANG=C sort | \
while read name attr; do
[[ "$name" != '.' && "$name" != '..' ]] || continue
path="$1/$name"
# If the second char of the attributes is '4', it is a directory.
if [[ $attr =~ ^.4 ]]; then
dolevel "$path"
else
printf "%s\n" "$path"
fi
done
}
# The filer always prints its version on stderr, so we are going
# to redirect it to the bit bucket. On the other hand, the filer's
# return code on error is still 0. Let's run it once to without
# redirecting stderr to see that there is at least one entry.
$filer -R "ls -l -p" "$image" | grep -q -m1 -P '^/.*/.*/.*/.*/.+/.*/$'
dolevel .
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