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copy-firmware: Create symlinks from WHENCE file

Rather than require symlinks to be created in the filesystem and have
duplicate Link: entries in the WHENCE file, make copy-firmware.sh create
the symlinks on the fly.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>
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Thierry Reding 5 years ago committed by Josh Boyer
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  1. 64
      copy-firmware.sh

64
copy-firmware.sh

@ -5,12 +5,31 @@ @@ -5,12 +5,31 @@
#

verbose=:
if [ x"$1" = x"-v" ]; then
verbose=echo
shift
fi
prune=no

destdir="$1"
while test $# -gt 0; do
case $1 in
-v | --verbose)
verbose=echo
shift
;;

-P | --prune)
prune=yes
shift
;;

*)
if test "x$destdir" != "x"; then
echo "ERROR: unknown command-line options: $@"
exit 1
fi

destdir="$1"
shift
;;
esac
done

grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
test -f "$f" || continue
@ -20,11 +39,36 @@ grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do @@ -20,11 +39,36 @@ grep '^File:' WHENCE | sed -e's/^File: *//g' -e's/"//g' | while read f; do
done

grep -E '^Link:' WHENCE | sed -e's/^Link: *//g' -e's/-> //g' | while read f d; do
test -L "$f" || continue
test -f "$destdir/$f" && continue
$verbose "copying link $f"
mkdir -p $destdir/$(dirname "$f")
cp -d "$f" $destdir/"$f"
if test -L "$f"; then
test -f "$destdir/$f" && continue
$verbose "copying link $f"
mkdir -p $destdir/$(dirname "$f")
cp -d "$f" $destdir/"$f"

if test "x$d" != "x"; then
target=`readlink "$f"`

if test "x$target" != "x$d"; then
$verbose "WARNING: inconsistent symlink target: $target != $d"
else
if test "x$prune" != "xyes"; then
$verbose "WARNING: unneeded symlink detected: $f"
else
$verbose "WARNING: pruning unneeded symlink $f"
rm -f "$f"
fi
fi
else
$verbose "WARNING: missing target for symlink $f"
fi
else
test -f "$destdir/$f" && continue
$verbose "creating link $f -> $d"
mkdir -p $destdir/$(dirname "$f")
ln -sf "$d" "$destdir/$f"
fi
done

exit 0

# vim: et sw=4 sts=4 ts=4

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