kernel-firmware/firmware.sh

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#!/bin/bash
#
# Generate Supplements: lines for the kernel-firmware package, by looking at
# the firmware: and alias: fields of kernel modules.
USAGE="find <firmware directory> | $0 --find-supplements [kernel directory | kernel.rpm]
$0 --kill-duplicates <firmware directory> [kernel directory | kernel.rpm]"
usage()
{
echo "Usage: $USAGE" >&2
exit 1
}
get_kernel_dir()
{
# default to the running or last installed kernel
if test -z "$kernel"; then
if test -d "/lib/modules/$(uname -r)/kernel"; then
kernel="$_"
return
fi
local pkg=$(rpm -q --qf '%{buildtime} %{n}-%{v}-%{r}\n' \
kernel-default kernel-desktop kernel-pae | sort -rn |
head -n1 | cut -d' ' -f 2)
if test -n "$pkg"; then
kernel=$(rpm -ql "$pkg" | \
grep -m1 '^/lib/modules/[2-9][^/]*/kernel$')
fi
if test -d "$kernel"; then
return
fi
echo "No kernel found" >&2
usage
fi
# /lib/modules/$version ?
if test -d "$kernel/kernel"; then
kernel="$_"
return
fi
# just $version ?
if test -d "/lib/modules/$kernel/kernel"; then
kernel="$_"
return
fi
# a kernel rpm?
case "$kernel" in
*.rpm)
mkdir "$tmp/kernel"
rpm2cpio "$kernel" | (cd "$tmp/kernel"; cpio -id --quiet)
kernel=($tmp/kernel/lib/modules/*/kernel)
kernel=${kernel[0]}
return
esac
usage
}
cache=
if test "$1" = "--cache" ; then
cache=$2
shift
shift
fi
if test "$1" = "--find-supplements" -a -n "$cache" ; then
if ! test -e "$cache"; then
get_kernel_dir
echo "Using $kernel" >&2
find "$kernel" -name '*.ko' -type f | while read ko; do
/sbin/modinfo -F firmware "$ko" | sed -e "s@\$@ $ko@"
done > $cache
fi
hits=$(while read fw ; do
sed -n -e "s@^${fw#$RPM_BUILD_ROOT/lib/firmware/} @@p" < "$cache"
done | sort)
if test -n "$hits"; then
echo "$hits" | RPMBUILD_SPECFILE=/dev/null /usr/lib/rpm/find-supplements.ksyms | \
sed 's/^modalias(kernel-[^:]*:/modalias(/' # strip the kernel-$flavor: prefix
fi
exit 0
fi
trap 'rm -rf "$tmp"' EXIT
tmp=$(mktemp -d)
case "$1" in
--find-supplements)
kernel=$2
cat >"$tmp/filelist"
if test ! -s "$tmp/filelist"; then
usage
fi
get_kernel_dir
echo "Using $kernel" >&2
find "$kernel" -name '*.ko' -type f | while read ko; do
if grep -qFf <(/sbin/modinfo -F firmware "$ko") \
"$tmp/filelist"; then
echo "$ko"
fi
done | sort | \
RPMBUILD_SPECFILE=/dev/null /usr/lib/rpm/find-supplements.ksyms | \
sed 's/^modalias(kernel-[^:]*:/modalias(/' # strip the kernel-$flavor: prefix
;;
--kill-duplicates)
firmware=$2
kernel=$3
get_kernel_dir
kernel=${kernel/\/lib\/modules\//\/lib\/firmware\/}
kernel=${kernel%/kernel}
echo "Using $kernel" >&2
find "$firmware" -type f -printf '%P\n' | while read f; do
if cmp -s "$kernel/$f" "$firmware/$f"; then
rm -v "$_"
fi
done
;;
*)
usage
esac