Re: [Qemu-devel] [PATCH v3 3/4] update-linux-headers: copy standard-headers files one by one

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Sep 10, 2015 at 11:39:37AM +0200, Paolo Bonzini wrote:
> cp_virtio is called for both the asm-s390/ and linux/ directories,
> so it looks for pci_regs.h and input.h files in asm-s390/ too.  This
> makes little sense.  In the next patch we will have the opposite
> problem; we want to add asm-x86/hyperv.h, and there's also a
> linux/hyperv.h file with unwanted dependencies on additional Linux
> uapi headers.  We do not want to copy linux/hyperv.h.
> 
> The solution is to make cp_virtio (now renamed to cp_portable) copy
> one file only, instead of using the "find" command, and call it multiple
> times.  The new function is really just a reindentation of the old one.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

> ---
>  scripts/update-linux-headers.sh | 69 +++++++++++++++++++++--------------------
>  1 file changed, 36 insertions(+), 33 deletions(-)
> 
> diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh
> index 7f7b592..6a75678 100755
> --- a/scripts/update-linux-headers.sh
> +++ b/scripts/update-linux-headers.sh
> @@ -28,39 +28,32 @@ if [ -z "$output" ]; then
>      output="$PWD"
>  fi
>  
> -cp_virtio() {
> -    from=$1
> +cp_portable() {
> +    f=$1
>      to=$2
> -    virtio=$(find "$from" -name '*virtio*h' -o -name "input.h" -o -name "pci_regs.h")
> -    if [ "$virtio" ]; then
> -        rm -rf "$to"
> -        mkdir -p "$to"
> -        for f in $virtio; do
> -            if
> -                grep '#include' "$f" | grep -v -e 'linux/virtio' \
> -                                             -e 'linux/types' \
> -                                             -e 'stdint' \
> -                                             -e 'linux/if_ether' \
> -                                             -e 'sys/' \
> -                                             > /dev/null
> -            then
> -                echo "Unexpected #include in input file $f".
> -                exit 2
> -            fi
> -
> -            header=$(basename "$f");
> -            sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
> -                -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
> -                -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
> -                -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
> -                -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
> -                -e 's/__bitwise__//' \
> -                -e 's/__attribute__((packed))/QEMU_PACKED/' \
> -                -e 's/__inline__/inline/' \
> -                -e '/sys\/ioctl.h/d' \
> -                "$f" > "$to/$header";
> -        done
> +    if
> +        grep '#include' "$f" | grep -v -e 'linux/virtio' \
> +                                     -e 'linux/types' \
> +                                     -e 'stdint' \
> +                                     -e 'linux/if_ether' \
> +                                     -e 'sys/' \
> +                                     > /dev/null
> +    then
> +        echo "Unexpected #include in input file $f".
> +        exit 2
>      fi
> +
> +    header=$(basename "$f");
> +    sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
> +        -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
> +        -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
> +        -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
> +        -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
> +        -e 's/__bitwise__//' \
> +        -e 's/__attribute__((packed))/QEMU_PACKED/' \
> +        -e 's/__inline__/inline/' \
> +        -e '/sys\/ioctl.h/d' \
> +        "$f" > "$to/$header";
>  }
>  
>  # This will pick up non-directories too (eg "Kconfig") but we will
> @@ -93,7 +86,12 @@ for arch in $ARCHLIST; do
>          cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/"
>      fi
>  
> -    cp_virtio "$tmpdir/include/asm" "$output/include/standard-headers/asm-$arch"
> +    rm -rf "$output/include/standard-headers/asm-$arch"
> +    mkdir -p "$output/include/standard-headers/asm-$arch"
> +    if [ $arch = s390 ]; then
> +        cp_portable "$tmpdir/include/asm/kvm_virtio.h" "$output/include/standard-headers/asm-s390/"
> +        cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
> +    fi
>  done
>  
>  rm -rf "$output/linux-headers/linux"
> @@ -120,7 +118,12 @@ cat <<EOF >$output/linux-headers/linux/virtio_ring.h
>  #include "standard-headers/linux/virtio_ring.h"
>  EOF
>  
> -cp_virtio "$tmpdir/include/linux/" "$output/include/standard-headers/linux"
> +rm -rf "$output/include/standard-headers/linux"
> +mkdir -p "$output/include/standard-headers/linux"
> +for i in "$tmpdir"/include/linux/*virtio*.h "$tmpdir/include/linux/input.h" \
> +         "$tmpdir/include/linux/pci_regs.h"; do
> +    cp_portable "$i" "$output/include/standard-headers/linux"
> +done
>  
>  cat <<EOF >$output/include/standard-headers/linux/types.h
>  #include <stdint.h>
> -- 
> 2.4.3
>