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|
#!/bin/sh
VERSION=@VERSION@
sysconfdir=@sysconfdir@
datadir=@datadir@
config="$sysconfidir"/mkinitfs.conf
init="$datadir"/initramfs-init
startdir=$PWD
_cp() {
local i
if [ -n "$list_sources" ]; then
for i in "$@"; do
echo $i
done
return
fi
for i in "$@"; do
local dest="$tmpdir"/${i%/*}
mkdir -p "$dest"
cp -flLpR "$i" "$dest" 2>/dev/null || cp -pR "$i" "$dest"
done
}
feature_files() {
local dir="$1"
local glob file
for f in $features; do
if [ ! -f "$dir/$f" ]; then
continue
fi
for glob in $(cat "$dir/$f"); do
for file in $glob; do
echo $glob
done
done
done
}
initfs_base() {
local i= dirs= glob= file=
echo "==> initramfs: copying base files" >&2
for i in dev proc sys sbin bin .modloop lib/modules media/cdrom \
media/floppy media/usb newroot; do
dirs="$dirs $tmpdir/$i"
done
[ -z "$list_sources" ] && mkdir -p $dirs
for file in $(feature_files "$filelists_dir"); do
_cp $file
done
# copy init
if [ -z "$list_sources" ]; then
cd $startdir
install -m755 "$init" "$tmpdir"/init
else
echo "$init"
fi
}
find_kmod_deps() {
awk '
function recursedeps(k, j) {
if (k in visited)
return;
visited[k] = 1;
split(deps[k], dep, " ");
for (j in dep)
recursedeps(dep[j]);
print(k);
}
BEGIN {
if (modulesdep == "")
modulesdep="modules.dep";
FS = ": ";
while ( (getline < modulesdep) > 0) {
deps[$1] = $2;
}
}
{
mod["/"$0] = 1;
}
END {
for (i in mod)
recursedeps(i);
}' -v modulesdep="$basedir/lib/modules/$kernel/modules.dep"
}
initfs_kmods() {
local glob= file= files= dirs=
[ -z "$list_soruces" ] && rm -rf "$tmpdir"/lib/modules
cd "$kerneldir" || return 1
echo "==> initramfs: copying kernel $kernel modules" >&2
files=$(
for file in $(feature_files $modulelists_dir); do
if ! [ -e ${file} ]; then
echo "$file: No such file or directory" >&2
continue
fi
echo $file
done | find_kmod_deps)
for file in $files; do
_cp "$basedir"/lib/modules/$kernel/$file
done
}
initfs_cpio() {
[ -n "$list_sources" ] && return
echo "==> initramfs: creating $outfile" >&2
(cd "$tmpdir" && find . | cpio -o -H newc | gzip) > $outfile
}
usage() {
cat <<EOF
usage: mkinitfs [-hkLl] [-b basedir] [-c configfile] [-f features]
[-i initfile ] [-o outfile] [-t tempdir] [kernelversion]"
options:
-b prefix files and kernel modules with basedir
-c use configfile instead of $config
-f use specified features
-h print this help
-i use initfile as init instead of $init
-k keep tempdir
-l only list files that would have been used
-L list available features
-o set another outfile
-t use tempdir when creating initramfs image
EOF
exit 1
}
# main
while getopts "b:c:hi:kLlo:t:" opt; do
case "$opt" in
b) basedir="$OPTARG";;
c) config="$OPTARG";;
f) myfeatures="$OPTARG";;
h) usage;;
i) init=$OPTARG;;
k) keeptmp=1;;
L) list_features=1;;
l) list_sources=1;;
o) outfile="$OPTARG";;
t) tmpdir="$OPTARG";;
*) usage;;
esac
done
shift $(( $OPTIND - 1 ))
. $(readlink -f "$config")
filelists_dir=${filelists_dir:-"$sysconfdir/files.d"}
modulelists_dir=${modules_dir:-"$sysconfdir/modules.d"}
[ -n "$myfeatures" ] && features="$myfeatures"
if [ -n "$list_features" ]; then
for i in $filelists_dir $modulelists_dir; do
( [ -d "$i" ] && cd $i && ls )
done | sort | uniq
exit 0
fi
[ -n "$1" ] && kernel="$1"
[ -z "$kernel" ] && kernel=$(uname -r)
kerneldir="$basedir/lib/modules/$kernel"
if [ -z "$outfile" ]; then
outfile="$basedir"/boot/${kernel##*-}.gz
fi
if [ ! -d "$kerneldir" ]; then
echo "$kerneldir does not exist or is not a directory"
exit 1
fi
if [ -z "$tmpdir" ]; then
tmpdir=$(mktemp -d /tmp/mkinitfs.XXXXXX)
else
mkdir -p "$tmpdir"
fi
if [ -z "$keeptmp" ]; then
[ -d "$tmpdir" ] && rm -rf "$tmpdir"/*
fi
initfs_base
initfs_kmods
initfs_cpio
# cleanup
if [ -z "$keeptmp" ]; then
[ -d "$tmpdir" ] && rm -rf "$tmpdir"
fi
|
