Root/scripts/headers_install.sh

1#!/bin/sh
2
3if [ $# -lt 1 ]
4then
5    echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]
6    echo
7    echo "Prepares kernel header files for use by user space, by removing"
8    echo "all compiler.h definitions and #includes, removing any"
9    echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
10    echo "asm/inline/volatile keywords."
11    echo
12    echo "OUTDIR: directory to write each userspace header FILE to."
13    echo "SRCDIR: source directory where files are picked."
14    echo "FILES: list of header files to operate on."
15
16    exit 1
17fi
18
19# Grab arguments
20
21OUTDIR="$1"
22shift
23SRCDIR="$1"
24shift
25
26# Iterate through files listed on command line
27
28FILE=
29trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
30for i in "$@"
31do
32    FILE="$(basename "$i")"
33    sed -r \
34        -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
35        -e 's/__attribute_const__([ \t]|$)/\1/g' \
36        -e 's@^#include <linux/compiler.h>@@' \
37        -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
38        -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
39        -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
40        "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
41    scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
42        > "$OUTDIR/$FILE"
43    [ $? -gt 1 ] && exit 1
44    rm -f "$OUTDIR/$FILE.sed"
45done
46trap - EXIT
47

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