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0001 #!/bin/sh
0002 
0003 if [ $# -lt 2 ]
0004 then
0005         echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
0006         echo
0007         echo "Prepares kernel header files for use by user space, by removing"
0008         echo "all compiler.h definitions and #includes, removing any"
0009         echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
0010         echo "asm/inline/volatile keywords."
0011         echo
0012         echo "OUTDIR: directory to write each userspace header FILE to."
0013         echo "SRCDIR: source directory where files are picked."
0014         echo "FILES:  list of header files to operate on."
0015 
0016         exit 1
0017 fi
0018 
0019 # Grab arguments
0020 
0021 OUTDIR="$1"
0022 shift
0023 SRCDIR="$1"
0024 shift
0025 
0026 # Iterate through files listed on command line
0027 
0028 FILE=
0029 trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
0030 for i in "$@"
0031 do
0032         FILE="$(basename "$i")"
0033         sed -r \
0034                 -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
0035                 -e 's/__attribute_const__([ \t]|$)/\1/g' \
0036                 -e 's@^#include <linux/compiler.h>@@' \
0037                 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
0038                 -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
0039                 -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
0040                 "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
0041         scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
0042                 > "$OUTDIR/$FILE"
0043         [ $? -gt 1 ] && exit 1
0044         rm -f "$OUTDIR/$FILE.sed"
0045 done
0046 trap - EXIT