kernel-firmware/install-split.sh

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#!/bin/sh
#
# Read WHENCE from stdin and install the compressed firmware files into DESTDIR.
# The file list for each topic is created as files-xxx under the current dir.
#
# usage: install-split.sh [-v] topics.list DESTDIR < WHENCE
#
verbose=:
if [ x"$1" = x"-v" ]; then
verbose=echo
shift
fi
topics="$1"
DESTDIR="$2"
fwdir=${3:-/lib/firmware}
dest=$DESTDIR/$fwdir
do_compress=1
if [ -n "$do_compress" ]; then
cext=".xz"
else
cext=""
fi
make_dirs () {
local f="$1"
mkdir -p $(dirname "$dest/$f")
local d=$(dirname "$f")
if [ "$d" != "." ]; then
while true; do
if ! grep -q '%dir '"$fwdir/$d"'$' files-$topic; then
echo "%dir $fwdir/$d" >> files-$topic
fi
case "$d" in
*/*) d=${d%/*};;
*) break;;
esac
done
fi
}
copy_link () {
local f="$1"
local lf="$2"
test -f "$dest/$f$cext" && return
test -z "$lf" && lf=$(readlink "$f")
make_dirs "$f"
ln -sf "$lf$cext" "$dest/$f$cext"
echo "\"$fwdir/$f$cext\"" >> files-$topic
$verbose "Link: $lf$cext -> $f$cext for topic $topic"
}
copy_file () {
local f="$1"
test -f "$dest/$f$cext" && return
make_dirs "$f"
install -c -m 0644 "$f" $(dirname "$dest/$f")
test -n "$do_compress" && xz -f -C crc32 "$dest/$f"
echo "\"$fwdir/$f$cext\"" >> files-$topic
$verbose "Copy: $f$cext for topic $topic"
}
sub="xxx"
while read l; do
test -z "$l" && continue
case "$l" in
----*)
sub=""
topic=""
;;
Driver:*)
test -n "$sub" && continue
sub=$(echo "$l" | sed -e's/Driver: *//' -e's/[ :].*$//')
m=$(grep -m1 "^$sub": "$topics" | sed -e's/^.*:[[:space:]]*//')
test -z "$m" && continue
set -- $m
topic="$1"
if [ "$topic" = "SKIP" ]; then
continue
fi
$verbose "Switching to topic $topic"
if [ -n "$topic" ]; then
if [ ! -s files-$topic ]; then
echo "%dir $fwdir" > files-$topic
fi
fi
;;
File:*)
test "$topic" = "SKIP" && continue
if [ -z "$topic" ]; then
echo "ERROR: no topic found for $l"
exit 1
fi
f=$(echo "$l" | sed -e's/^File: *//' -e's/"//g')
if [ -L "$f" ]; then
copy_link "$f"
else
copy_file "$f"
fi
;;
Link:*)
test "$topic" = "SKIP" && continue
if [ -z "$topic" ]; then
echo "ERROR: no topic found for $l"
exit 1
fi
echo "$l" | sed -e's/^Link: *//g' -e's/-> //g' | while read f d; do
copy_link "$f" "$d"
done
;;
esac
done
exit 0