git: e01e8f911b93 - main - freebsd-update: improve BE creation feature

The branch main has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=e01e8f911b935eabcc35b4d121951e4e21042ee5

commit e01e8f911b935eabcc35b4d121951e4e21042ee5
Author:     Kyle Evans <kevans@FreeBSD.org>
AuthorDate: 2022-02-12 21:36:24 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2022-02-12 21:36:24 +0000

    freebsd-update: improve BE creation feature
    
    This addresses one nit and one bug in the BE creation feature of
    freebsd-update:
    
    The nit addressed is that it currently only names the BEs after the
    userland version, but the kernel version may be higher.  After this
    change, we request both and pass them through sort(1) to choose the
    highest.  This is especially helpful if a freebsd-update patch touched
    one but not the other.
    
    The bug fixed is that roots updated that are not located at '/', e.g.,
    by using -b or -j, will no longer create boot environments
    automatically.  There's a very low chance these will actually change the
    BE in any meaningful way, anyways.  It could make sense in the future
    to allow an argument-override to create the BE anyways if someone comes
    up with a non-standard setup, e.g., where a jail is an important part of
    their boot environment on an appliance or some such setup.
    
    Half of this patch is submitted by delphij@, the other half kevans@.
    
    PR:             261446
    MFC after:      3 days
    Reviewed by:    delphij, emaste, Dave Fullard <dave_fullard.ca>
    Differential Revision:  https://reviews.freebsd.org/D34257
---
 usr.sbin/freebsd-update/freebsd-update.sh | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/freebsd-update/freebsd-update.sh b/usr.sbin/freebsd-update/freebsd-update.sh
index 1776115d0776..9743cd652d16 100644
--- a/usr.sbin/freebsd-update/freebsd-update.sh
+++ b/usr.sbin/freebsd-update/freebsd-update.sh
@@ -890,7 +890,12 @@ install_check_params () {
 install_create_be () {
 	# Figure out if we're running in a jail and return if we are
 	if [ `sysctl -n security.jail.jailed` = 1 ]; then
-	    return 1
+		return 1
+	fi
+	# Operating on roots that aren't located at / will, more often than not,
+	# not touch the boot environment.
+	if [ "$BASEDIR" != "/" ]; then
+		return 1
 	fi
 	# Create a boot environment if enabled
 	if [ ${BOOTENV} = yes ]; then
@@ -911,7 +916,7 @@ install_create_be () {
 		esac
 		if [ ${CREATEBE} = yes ]; then
 			echo -n "Creating snapshot of existing boot environment... "
-			VERSION=`freebsd-version -k`
+			VERSION=`freebsd-version -ku | sort -V | tail -n 1`
 			TIMESTAMP=`date +"%Y-%m-%d_%H%M%S"`
 			bectl create ${VERSION}_${TIMESTAMP}
 			if [ $? -eq 0 ]; then