scripts/headers_install.sh

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