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-rwxr-xr-xscripts/headers_install.sh48
1 files changed, 20 insertions, 28 deletions
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index 593f8879c641..47f6f3ea0771 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -1,47 +1,39 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
-if [ $# -lt 2 ]
+if [ $# -ne 2 ]
then
- echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
+ echo "Usage: headers_install.sh INFILE OUTFILE"
echo
echo "Prepares kernel header files for use by user space, by removing"
echo "all compiler.h definitions and #includes, removing any"
echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
echo "asm/inline/volatile keywords."
echo
- echo "OUTDIR: directory to write each userspace header FILE to."
- echo "SRCDIR: source directory where files are picked."
- echo "FILES: list of header files to operate on."
+ echo "INFILE: header file to operate on"
+ echo "OUTFILE: output file which the processed header is writen to"
exit 1
fi
# Grab arguments
+INFILE=$1
+OUTFILE=$2
+TMPFILE=$OUTFILE.tmp
-OUTDIR="$1"
-shift
-SRCDIR="$1"
-shift
+trap 'rm -f $OUTFILE $TMPFILE' EXIT
-# Iterate through files listed on command line
+sed -E -e '
+ s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
+ s/__attribute_const__([[:space:]]|$)/\1/g
+ s@^#include <linux/compiler(|_types).h>@@
+ s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g
+ s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g
+ s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @
+' $INFILE > $TMPFILE || exit 1
-FILE=
-trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
-for i in "$@"
-do
- FILE="$(basename "$i")"
- sed -E \
- -e 's/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g' \
- -e 's/__attribute_const__([[:space:]]|$)/\1/g' \
- -e 's@^#include <linux/compiler(|_types).h>@@' \
- -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
- -e 's/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g' \
- -e 's@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @' \
- "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
- scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
- > "$OUTDIR/$FILE"
- [ $? -gt 1 ] && exit 1
- rm -f "$OUTDIR/$FILE.sed"
-done
+scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE
+[ $? -gt 1 ] && exit 1
+
+rm -f $TMPFILE
trap - EXIT