Use variable and shorter logic for NFS check

No need to hardcode a parent path if we can reuse an existing variable for
the specific path that is in being used.

Negate the file system type in df(1) so the `|| exit 1' can be dropped
in favour of the errexit option, as is done for everything else in there.

Clarify the comment how this is intentionally NOT logged, i.e. the test
happens before the error trap/syslog/logfile handling.

OK millert

1 files changed, 4 insertions, 4 deletions

diff --git a/libexec/reorder_kernel/reorder_kernel.sh b/libexec/reorder_kernel/reorder_kernel.sh
index 4d89b40ead6..fb1d151f42a 100644
--- a/libexec/reorder_kernel/reorder_kernel.sh
+++ b/libexec/reorder_kernel/reorder_kernel.sh
@@ -1,6 +1,6 @@
 #!/bin/ksh
 #
-# $OpenBSD: reorder_kernel.sh,v 1.12 2022/11/07 11:03:14 kn Exp $
+# $OpenBSD: reorder_kernel.sh,v 1.13 2022/11/07 15:55:56 kn Exp $
 #
 # Copyright (c) 2017 Robert Peichaer <rpe@openbsd.org>
 #
@@ -20,9 +20,6 @@ set -o errexit
 
 export PATH=/usr/bin:/bin:/usr/sbin:/sbin
 
-# Skip if /usr/share is on a nfs mounted filesystem.
-df -t nfs /usr/share >/dev/null 2>&1 && exit 1
-
 KERNEL=$(sysctl -n kern.osversion)
 KERNEL=${KERNEL%#*}
 KERNEL_DIR=/usr/share/relink/kernel
@@ -30,6 +27,9 @@ LOGFILE=$KERNEL_DIR/$KERNEL/relink.log
 PROGNAME=${0##*/}
 SHA256=/var/db/kernel.SHA256
 
+# Silently skip if on a NFS mounted filesystem.
+df -t nonfs $KERNEL_DIR >/dev/null 2>&1
+
 # Install trap handlers to inform about success or failure via syslog.
 ERRMSG='failed'
 trap 'trap - EXIT; logger -st $PROGNAME "$ERRMSG" >/dev/console 2>&1' ERR