scripts/atomic/check-atomics.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Check if atomic headers are up-to-date
   5
   6 ATOMICDIR=$(dirname $0)
   7 ATOMICTBL=${ATOMICDIR}/atomics.tbl
   8 LINUXDIR=${ATOMICDIR}/../..
   9
  10 echo '' | sha1sum - > /dev/null 2>&1
  11 if [ $? -ne 0 ]; then
  12         printf "sha1sum not available, skipping atomic header checks.\n"
  13         exit 0
  14 fi
  15
  16 cat <<EOF |
  17 linux/atomic/atomic-instrumented.h
  18 linux/atomic/atomic-long.h
  19 linux/atomic/atomic-arch-fallback.h
  20 EOF
  21 while read header; do
  22         OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
  23         OLDSUM="${OLDSUM#// }"
  24
  25         NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)"
  26         NEWSUM="${NEWSUM%% *}"
  27
  28         if [ "${OLDSUM}" != "${NEWSUM}" ]; then
  29                 printf "warning: generated include/${header} has been modified.\n"
  30         fi
  31 done
  32
  33 exit 0