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#!/bin/sh
## $FreeBSD$
## 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
fi
;;
*) rc=0
;;
esac
case "$daily_backup_efi_enable" in
[Yy][Ee][Ss])
efi_part=$(gpart show -p | 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
;;
esac
exit $rc
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