scripts/headers_install.sh

   1 #!/bin/sh
   2
   3 if [ $# -lt 1 ]
   4 then
   5         echo "Usage: headers_install.sh OUTDIR [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 "FILES:  list of header files to operate on."
  14
  15         exit 1
  16 fi
  17
  18 # Grab arguments
  19
  20 OUTDIR="$1"
  21 shift
  22
  23 # Iterate through files listed on command line
  24
  25 FILE=
  26 trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
  27 for i in "$@"
  28 do
  29         FILE="$(basename "$i")"
  30         sed -r \
  31                 -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
  32                 -e 's/__attribute_const__([ \t]|$)/\1/g' \
  33                 -e 's@^#include <linux/compiler.h>@@' \
  34                 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
  35                 -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
  36                 -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
  37                 "$i" > "$OUTDIR/$FILE.sed" || exit 1
  38         scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
  39                 > "$OUTDIR/$FILE"
  40         [ $? -gt 1 ] && exit 1
  41         rm -f "$OUTDIR/$FILE.sed"
  42 done
  43 trap - EXIT