LXR linux/scripts/headers

   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3
   4if [ $# -lt 2 ]
   5then
   6        echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
   7        echo
   8        echo "Prepares kernel header files for use by user space, by removing"
   9        echo "all compiler.h definitions and #includes, removing any"
  10        echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
  11        echo "asm/inline/volatile keywords."
  12        echo
  13        echo "OUTDIR: directory to write each userspace header FILE to."
  14        echo "SRCDIR: source directory where files are picked."
  15        echo "FILES:  list of header files to operate on."
  16
  17        exit 1
  18fi
  19
  20# Grab arguments
  21
  22OUTDIR="$1"
  23shift
  24SRCDIR="$1"
  25shift
  26
  27# Iterate through files listed on command line
  28
  29FILE=
  30trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
  31for i in "$@"
  32do
  33        FILE="$(basename "$i")"
  34        sed -E \
  35                -e 's/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g' \
  36                -e 's/__attribute_const__([[:space:]]|$)/\1/g' \
  37                -e 's@^#include <linux/compiler(|_types).h>@@' \
  38                -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
  39                -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \
  40                -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @' \
  41                "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
  42        scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
  43                > "$OUTDIR/$FILE"
  44        [ $? -gt 1 ] && exit 1
  45        rm -f "$OUTDIR/$FILE.sed"
  46done
  47trap - EXIT
  48