security-misc/usr/lib/dracut/modules.d/20remount-secure/remount-secure.sh
Patrick Schleizer 52fa7db087
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2023-10-22 13:57:38 -04:00

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#!/bin/sh
## Copyright (C) 2023 - 2023 ENCRYPTED SUPPORT LP <adrelanos@whonix.org>
## See the file COPYING for copying conditions.
## This script is intended to remount specified mount points with more secure
## options based on kernel command line parameters.
remount_hook() {
local remountsecure_action
## getarg returns the last parameter only.
## if /proc/cmdline contains 'remountsecure=0 remountsecure=1 remountsecure=noexec' the last one wins.
remountsecure_action=$(getarg remountsecure)
if [ "$remountsecure_action" = "1" ]; then
if ! remount-secure; then
warn "$0: ERROR: 'remount-secure' failed."
return 1
fi
info "$0: INFO: 'remount-secure' success."
return 0
fi
if [ "$remountsecure_action" = "noexec" ]; then
if ! remount-secure --remountnoexec; then
warn "$0: ERROR: 'remount-secure --remountnoexec' failed."
return 1
fi
info "$0: INFO: 'remount-secure --remountnoexec' success."
return 0
fi
warn "$0: WARNING: Not using remount-secure."
return 1
}
remount_hook