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mcexec: Disable address space layout randomization

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Move the code from mcreboot.sh to mcexec.c.
This commit is contained in:
Masamichi Takagi
2017-07-12 14:11:36 +09:00
parent 0f58e9e77d
commit 6415dcfdcc
3 changed files with 46 additions and 19 deletions
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15
arch/x86/tools/mcreboot-smp-x86.sh.in
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@ -180,11 +180,6 @@ error_exit() {
fi
fi
;&
aslr_disabled)
if [ -f /tmp/mckernel_randomize_va_space ]; then
cat /tmp/mckernel_randomize_va_space > /proc/sys/kernel/randomize_va_space
fi
;&
initial)
# Nothing more to revert
;;
@ -236,12 +231,6 @@ if [ "$cpus" == "" ]; then
fi
fi
# Disable address space layout randomization
if [ -f /proc/sys/kernel/randomize_va_space ] && [ "`cat /proc/sys/kernel/randomize_va_space`" != "0" ]; then
cat /proc/sys/kernel/randomize_va_space > /tmp/mckernel_randomize_va_space
echo "0" > /proc/sys/kernel/randomize_va_space
fi
# Remove mcoverlay if loaded
if [ "$enable_mcoverlay" == "yes" ]; then
if grep mcoverlay /proc/modules &>/dev/null; then
@ -252,7 +241,7 @@ if [ "$enable_mcoverlay" == "yes" ]; then
if [ -e /tmp/mcos ]; then rm -rf /tmp/mcos; fi
if ! rmmod mcoverlay 2>/dev/null; then
echo "error: removing mcoverlay" >&2
error_exit "aslr_disabled"
exit 1
fi
fi
fi
@ -262,7 +251,7 @@ if [ "${irqbalance_used}" == "yes" ]; then
systemctl stop irqbalance_mck.service 2>/dev/null
if ! systemctl stop irqbalance.service 2>/dev/null ; then
echo "error: stopping irqbalance" >&2
error_exit "aslr_disabled"
exit 1
fi;
if ! etcdir=@ETCDIR@ perl -e 'use File::Copy qw(copy); $etcdir=$ENV{'etcdir'}; @files = grep { -f } glob "/proc/irq/*/smp_affinity"; foreach $file (@files) { $rel = substr($file, 1); $dir=substr($rel, 0, length($rel)-length("/smp_affinity")); if(0) { print "cp $file $etcdir/$rel\n";} if(system("mkdir -p $etcdir/$dir")){ exit 1;} if(!copy($file,"$etcdir/$rel")){ exit 1;} }'; then