debian/scripts/retpoline-extract

   1 #!/bin/bash
   2
   3 cd "$1" || exit 1
   4
   5 # Find all valid retpoline information, collate the detected and
   6 # safe information together.  Join the result to find the detected
   7 # but non-safe elements.  These are our concern.
   8 ur_detected=$(mktemp --tmpdir "retpoline-check-XXXXXX.ur-detected")
   9 ur_safe=$(mktemp --tmpdir "retpoline-check-XXXXXX.ur-safe")
  10
  11 find "." -path './drivers/firmware/efi/libstub' -prune -o \
  12          -path './arch/x86/boot' -prune -o \
  13          -path './arch/x86/purgatory' -prune -o \
  14          -name \*.ur-detected -print0 | xargs -0 cat | \
  15         sed -e "s@^$1@@" -e "s@ $2/@ @" -e "s@^/@@" | \
  16         sort -k 1b,1 >"$ur_detected"
  17 find "." -name \*.ur-safe -print0 | xargs -0 cat | \
  18         sed -e "s@^$1@@" -e "s@^/@@" | \
  19         sort -k 1b,1 >"$ur_safe"
  20
  21 join -v 1 -j 1 "$ur_detected" "$ur_safe" | sed -s 's/[^ ]*  *//'
  22
  23 rm -f "$ur_detected" "$ur_safe"