From 4d2d542482205d3df1a0852751f5b004cc6390cc Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 28 Apr 2016 17:09:07 -0700 Subject: x86/KASLR: Clean up unused code from old 'run_size' and rename it to 'kernel_total_size' Since 'run_size' is now calculated in misc.c, the old script and associated argument passing is no longer needed. This patch removes them, and renames 'run_size' to the more descriptive 'kernel_total_size'. Signed-off-by: Yinghai Lu Signed-off-by: Baoquan He [ Rewrote the changelog, renamed 'run_size' to 'kernel_total_size' ] Signed-off-by: Kees Cook Cc: Andrew Morton Cc: Andy Lutomirski Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Borislav Petkov Cc: Brian Gerst Cc: Dave Young Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Triplett Cc: Junjie Mao Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vivek Goyal Cc: lasse.collin@tukaani.org Link: http://lkml.kernel.org/r/1461888548-32439-6-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar --- arch/x86/tools/calc_run_size.sh | 42 ----------------------------------------- 1 file changed, 42 deletions(-) delete mode 100644 arch/x86/tools/calc_run_size.sh (limited to 'arch/x86/tools') diff --git a/arch/x86/tools/calc_run_size.sh b/arch/x86/tools/calc_run_size.sh deleted file mode 100644 index 1a4c17bb3910..000000000000 --- a/arch/x86/tools/calc_run_size.sh +++ /dev/null @@ -1,42 +0,0 @@ -#!/bin/sh -# -# Calculate the amount of space needed to run the kernel, including room for -# the .bss and .brk sections. -# -# Usage: -# objdump -h a.out | sh calc_run_size.sh - -NUM='\([0-9a-fA-F]*[ \t]*\)' -OUT=$(sed -n 's/^[ \t0-9]*.b[sr][sk][ \t]*'"$NUM$NUM$NUM$NUM"'.*/\1\4/p') -if [ -z "$OUT" ] ; then - echo "Never found .bss or .brk file offset" >&2 - exit 1 -fi - -OUT=$(echo ${OUT# }) -sizeA=$(printf "%d" 0x${OUT%% *}) -OUT=${OUT#* } -offsetA=$(printf "%d" 0x${OUT%% *}) -OUT=${OUT#* } -sizeB=$(printf "%d" 0x${OUT%% *}) -OUT=${OUT#* } -offsetB=$(printf "%d" 0x${OUT%% *}) - -run_size=$(( $offsetA + $sizeA + $sizeB )) - -# BFD linker shows the same file offset in ELF. -if [ "$offsetA" -ne "$offsetB" ] ; then - # Gold linker shows them as consecutive. - endB=$(( $offsetB + $sizeB )) - if [ "$endB" != "$run_size" ] ; then - printf "sizeA: 0x%x\n" $sizeA >&2 - printf "offsetA: 0x%x\n" $offsetA >&2 - printf "sizeB: 0x%x\n" $sizeB >&2 - printf "offsetB: 0x%x\n" $offsetB >&2 - echo ".bss and .brk are non-contiguous" >&2 - exit 1 - fi -fi - -printf "%d\n" $run_size -exit 0 -- cgit v1.2.1