scripts/paxcheck.sh

   1 #!/bin/sh
   2
   3 if ! command -v scanelf > /dev/null; then
   4     echo "scanelf (from pax-utils) is required for these checks." >&2
   5     exit 3
   6 fi
   7
   8 RET=0
   9
  10 # check for exec stacks
  11 OUT=$(scanelf -qyRAF '%e %p' "$1")
  12
  13 if [ x"${OUT}" != x ]; then
  14     RET=2
  15     echo "The following files contain writable and executable sections"
  16     echo " Files with such sections will not work properly (or at all!) on some"
  17     echo " architectures/operating systems."
  18     echo " For more information, see:"
  19     echo "   https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart"
  20     echo
  21     echo "${OUT}"
  22     echo
  23 fi
  24
  25
  26 # check for TEXTRELS
  27 OUT=$(scanelf -qyRAF '%T %p' "$1")
  28
  29 if [ x"${OUT}" != x ]; then
  30     RET=2
  31     echo "The following files contain runtime text relocations"
  32     echo " Text relocations force the dynamic linker to perform extra"
  33     echo " work at startup, waste system resources, and may pose a security"
  34     echo " risk.  On some architectures, the code may not even function"
  35     echo " properly, if at all."
  36     echo " For more information, see:"
  37     echo "   https://wiki.gentoo.org/wiki/Hardened/HOWTO_locate_and_fix_textrels"
  38     echo
  39     echo "${OUT}"
  40     echo
  41 fi
  42
  43 exit "$RET"