debian/scripts/retpoline-extract

   1 #!/bin/bash
   2
   3 cd "$1" || exit 1
   4
   5 # Find all valid retpoline information, collate the detected and
   6 # safe information together.  Join the result to find the detected
   7 # but non-safe elements.  These are our concern.
   8 tmp="/tmp/retpoline-check.$$"
   9 find "." -path './drivers/firmware/efi/libstub' -prune -o \
  10          -path './arch/x86/boot' -prune -o \
  11          -path './arch/x86/purgatory' -prune -o \
  12          -name \*.ur-detected | xargs cat | \
  13         sed -e "s@^$1@@" -e "s@ $2/@ @" -e "s@^/@@" | \
  14         sort -k 1b,1 >"$tmp.ur-detected"
  15 find "." -name \*.ur-safe | xargs cat | \
  16         sed -e "s@^$1@@" -e "s@^/@@" | \
  17         sort -k 1b,1 >"$tmp.ur-safe"
  18
  19 join -v 1 -j 1 "$tmp.ur-detected" "$tmp.ur-safe" | sed -s 's/[^ ]*  *//'
  20
  21 rm -f "$tmp".*