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Index: usr.sbin/periodic/etc/daily/221.backup-gpart
===================================================================
--- /dev/null
+++ usr.sbin/periodic/etc/daily/221.backup-gpart
@@ -0,0 +1,119 @@
+#!/bin/sh
+
+## $Id: 221.backup-gpart.sh 58697be4119d 2017-10-03 03:09 +0200 lachman $
+## Created by: Miroslav Lachman <000.fbsd@quip.cz>
+
+## Backup of disk partitions layout, useful for gpart restore.
+## Data are stored on local filesystem, in /var/backup.
+## It is recommended to copy those files to off-site storage.
+
+
+## If there is a global system configuration file, suck it in.
+##
+if [ -r /etc/defaults/periodic.conf ]
+then
+ . /etc/defaults/periodic.conf
+ source_periodic_confs
+fi
+
+bak_dir=/var/backups
+
+rotate() {
+ base_name=$1
+ show_diff=$2
+ file="$bak_dir/$base_name"
+
+ if [ -f "${file}.bak" ] ; then
+ rc=0
+ if cmp -s "${file}.bak" "${file}.tmp"; then
+ rm "${file}.tmp"
+ else
+ rc=1
+ [ -n "$show_diff" ] && diff "${file}.bak" "${file}.tmp"
+ mv "${file}.bak" "${file}.bak2" || rc=3
+ mv "${file}.tmp" "${file}.bak" || rc=3
+ fi
+ else
+ rc=1
+ mv "${file}.tmp" "${file}.bak" || rc=3
+ [ -n "$show_diff" ] && cat "${file}.bak"
+ fi
+}
+
+case "$daily_backup_gpart_verbose" in
+ [Yy][Ee][Ss]) show="YES"
+esac
+
+case "$daily_backup_gpart_enable" in
+ [Yy][Ee][Ss])
+
+ echo ""
+ echo "Dump of kern.geom.conftxt:";
+ sysctl -n kern.geom.conftxt > "$bak_dir/kern.geom.conftxt.tmp"
+ rotate "kern.geom.conftxt" $show
+
+ gpart_devs=$(gpart show | awk '$1 == "=>" { print $4 }')
+ if [ -n "$daily_backup_gpart_exclude" ]; then
+ gpart_devs=$(echo ${gpart_devs} | grep -E -v "${daily_backup_gpart_exclude}")
+ fi
+
+ if [ -z "$gpart_devs" ]; then
+ echo '$daily_backup_gpart_enable is set but no disk probed by kernel.' \
+ "perhaps NFS diskless client."
+ rc=2
+ else
+ echo ""
+ echo "Backup of partitions information for:";
+
+ for d in ${gpart_devs}; do
+ echo "$d"
+ safe_name=$(echo "gpart.${d}" | tr -cs ".[:alnum:]\n" "_")
+ gpart backup "$d" > "$bak_dir/$safe_name.tmp"
+ rotate "$safe_name" $show
+ done
+
+ gpart_show=$(gpart show -p)
+ boot_part=$(echo "$gpart_show" | awk '$4 ~ /(bios|freebsd)-boot/ { print $3 }')
+ if [ -n "$boot_part" ]; then
+ echo ""
+ echo "Backup of boot partition content:"
+ for b in ${boot_part}; do
+ echo "$b"
+ safe_name=$(echo "boot.${b}" | tr -cs ".[:alnum:]\n" "_")
+ dd if="/dev/${b}" of="$bak_dir/$safe_name.tmp" 2> /dev/null
+ rotate "$safe_name"
+ done
+ fi
+
+ mbr_part=$(echo "$gpart_show" | awk '$1 == "=>" && $5 == "MBR" { print $4 }')
+ if [ -n "$mbr_part" ]; then
+ echo ""
+ echo "Backup of MBR record:"
+ for mb in ${mbr_part}; do
+ echo "$mb"
+ safe_name=$(echo "boot.${mb}" | tr -cs ".[:alnum:]\n" "_")
+ dd if="/dev/${mb}" of="$bak_dir/$safe_name.tmp" bs=512 count=1 2> /dev/null
+ rotate "$safe_name"
+ done
+ fi
+
+ efi_part=$(echo "$gpart_show" | awk '$4 ~ /efi/ {print $3}')
+ if [ -n "$efi_part" ]; then
+ echo ""
+ echo "Backup of EFI partition content:"
+ for efi in ${efi_part}; do
+ echo "$efi"
+ safe_name=$(echo "efi.${efi}" | tr -cs ".[:alnum:]\n" "_")
+ dd if="/dev/${efi}" of="$bak_dir/$safe_name.tmp" 2> /dev/null
+ rotate "$safe_name"
+ done
+ fi
+
+ fi
+ ;;
+
+ *) rc=0
+ ;;
+esac
+
+exit $rc

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