| 1 | |
| 2 | |
| 3 |
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| 4 | if [ $# -ne 2 ]
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| 5 | then
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| 6 | echo "Usage: headers_install.sh INFILE OUTFILE"
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| 7 | echo
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| 8 | echo "Prepares kernel header files for use by user space, by removing"
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| 9 | echo "all compiler.h definitions and #includes, removing any"
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| 10 | echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
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| 11 | echo "asm/inline/volatile keywords."
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| 12 | echo
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| 13 | echo "INFILE: header file to operate on"
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| 14 | echo "OUTFILE: output file which the processed header is writen to"
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| 15 |
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| 16 | exit 1
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| 17 | fi
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| 18 |
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| 19 | |
| 20 | INFILE=$1
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| 21 | OUTFILE=$2
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| 22 | TMPFILE=$OUTFILE.tmp
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| 23 |
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| 24 | trap 'rm -f $OUTFILE $TMPFILE' EXIT
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| 25 |
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| 26 | |
| 27 | if [ -n "$(sed -n -e "/SPDX-License-Identifier:.*GPL-/{/WITH Linux-syscall-note/!p}" $INFILE)" ]; then
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| 28 | echo "error: $INFILE: missing \"WITH Linux-syscall-note\" for SPDX-License-Identifier" >&2
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| 29 | exit 1
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| 30 | fi
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| 31 |
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| 32 | sed -E -e '
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| 33 | s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
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| 34 | s/__attribute_const__([[:space:]]|$)/\1/g
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| 35 | s@^#include <linux/compiler(|_types).h>@@
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| 36 | s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g
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| 37 | s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g
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| 38 | s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @
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| 39 | ' $INFILE > $TMPFILE || exit 1
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| 40 |
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| 41 | scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE
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| 42 | [ $? -gt 1 ] && exit 1
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| 43 |
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| 44 | rm -f $TMPFILE
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| 45 | trap - EXIT
|