| 1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | |
| 4 | if [ $# -lt 2 ] |
| 5 | then |
| 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 |
| 18 | fi |
| 19 | |
| 20 | # Grab arguments |
| 21 | |
| 22 | OUTDIR="$1" |
| 23 | shift |
| 24 | SRCDIR="$1" |
| 25 | shift |
| 26 | |
| 27 | # Iterate through files listed on command line |
| 28 | |
| 29 | FILE= |
| 30 | trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT |
| 31 | for i in "$@" |
| 32 | do |
| 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" |
| 46 | done |
| 47 | trap - EXIT |