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minor mmap-rnd-bits improvements

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Patrick Schleizer 2023-05-05 14:49:56 +00:00
parent d6d79e96c9
commit 89168ef40c
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GPG Key ID: CB8D50BB77BB3C48
1 changed files with 18 additions and 2 deletions
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20
usr/libexec/security-misc/mmap-rnd-bits
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@ -9,6 +9,23 @@
set -euo pipefail
shopt -s failglob
exit_with_error() {
echo "$0: SEE ALSO:" >&2
echo "" >&2
echo "https://forums.whonix.org/t/automate-mmap-randomisation-to-fix-ppc64el/16514" >&2
exit 1
}
if ! test -d /etc/sysctl.d ; then
echo "$0: ERROR: Folder /etc/sysctl.d does not exist!" >&2
exit_with_error
fi
if ! test -w /etc/sysctl.d/30_security-misc_aslr-mmap.conf ; then
echo "$0: ERROR: File /etc/sysctl.d/30_security-misc_aslr-mmap.conf not writeable! This script is supposed to be run as root." >&2
exit_with_error
fi
## Defaults in case Linux config detection fails. These are likely to work fine
## on x86_64, probably not elsewhere.
BITS_MAX_DEFAULT=32
@ -48,5 +65,4 @@ if echo "${SYSCTL}" | tee /etc/sysctl.d/30_security-misc_aslr-mmap.conf > /dev/n
fi
echo "$0: ERROR: Error writing ASLR map config file '/etc/sysctl.d/30_security-misc_aslr-mmap.conf'!" >&2
exit 1
exit_with_error