core/fakeuname

#!/bin/sh
#
#  Fakeuname - fakes the uname system value
#
#  usage example:  ../fakeuname -r 2.6.33-CHAKRA ../makepkg
#

uname=$(which uname)

dir=$(mktemp -d --tmpdir uname.XXXXXXXX)

kernel=$($uname -s)
nodename=$($uname -n)
kernel_rel=$($uname -r)
kernel_ver=$($uname -v)
machine=$($uname -m)
processor=$($uname -p)
hw=$($uname -i)
os=$($uname -o)

# print usage
usage() {
    echo "Usage: $( basename "$0" ) [options] [ -- ] command"
    echo "Options:"
    echo "    -s kernel-name"
    echo "    -n nodename"
    echo "    -r kernel-release"
    echo "    -v kernel-version"
    echo "    -m machine"
    echo "    -p processor"
    echo "    -i hardware-platform"
    echo "    -o operating-system"
    exit 0
}

cleanup() {
    rm -rf -- "$dir"
}


# always clean up temporary folder
trap 'cleanup' EXIT TERM HUP QUIT INT

[ $# -eq 0 ] && usage

current=""
for arg in "$@"; do
    case "$arg" in
        -s|--kernel-name)       shift ; current=kernel     ;;
        -n|--nodename)          shift ; current=nodename   ;;
        -r|--kernel-release)    shift ; current=kernel_rel ;;
        -v|--kernel-version)    shift ; current=kernel_ver ;;
        -m|--machine)           shift ; current=machine    ;;
        -p|--processor)         shift ; current=processor  ;;
        -i|--hardware-platform) shift ; current=hw         ;;
        -o|--operating-system)  shift ; current=os         ;;
        --) shift ; break ;;
        -*) echo -e >&2 "$( basename "$0" ): Invalid option \`$arg' found\n" && usage ;;
        *) [ -n "$current" ] && eval "$current='$arg'" && current="" && shift || break ;;
    esac
done

for arg in "$@"; do
    cmd="$cmd '$arg'"
done

# write uname file
cat > "$dir/uname" <<EOF
#!/bin/sh

uname_output() {
    $uname "\$1";
    exit \$?
}

for arg in "\$@"; do
    if [ "\${arg:0:1}" = "-" ]; then
        case "\$arg" in
            --help) uname_output "\$arg" ;;
            --version) uname_output "\$arg" ;;
            -a|--all)
                echo "$kernel $nodename $kernel_rel $kernel_ver $machine $processor $hw $os"
                exit \$? ;;
            -s|--kernel-name) ;;
            -n|--nodename) ;;
            -r|--kernel-release) ;;
            -v|--kernel-version) ;;
            -m|--machine) ;;
            -p|--processor) ;;
            -i|--hardware-platform) ;;
            -o|--operating-system) ;;
            *) uname_output "\$arg" ;;
        esac
    else
        uname_output "\$arg"
    fi
done

for arg in "\$@"; do
    case "\$arg" in
        -s|--kernel-name) echo -n "$kernel";;
        -n|--nodename) echo -n "$nodename";;
        -r|--kernel-release) echo -n "$kernel_rel";;
        -v|--kernel-version) echo -n "$kernel_ver";;
        -m|--machine) echo -n "$machine";;
        -p|--processor) echo -n "$processor";;
        -i|--hardware-platform) echo -n "$hw";;
        -o|--operating-system) echo -n "$os";;
    esac
done

# new line
echo

EOF

chmod a+x "$dir/uname"
export PATH="$dir/:$PATH"

eval $cmd