makebsd.sh: new script to make custom FreeBSD images

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

makebsd.sh

@@ -0,0 +1,67 @@
+#!/bin/sh
+
+set -e
+
+if [ ! -f "$1" ];then
+    echo "Pass path to ISO"
+    exit 1
+fi
+
+isosrc="$1"
+workdir="$HOME/iso"
+mntdir="/mnt/iso"
+isoout="$HOME/custom.iso"
+imgout="$HOME/custom.img"
+makeimg="no"
+
+pkg install rsync cdrtools
+
+mdconfig -a -t vnode -u 0 -f "$isosrc"
+mkdir -vp "$mntdir"
+mount -t cd9660 /dev/md0 "$mntdir"
+
+mkdir -vp "$workdir"
+rsync -va "$mntdir/" "$workdir/"
+umount "$mntdir"
+mdconfig -d -u 0
+
+if [ "$makeimg" == "no" ];then
+    echo '/dev/iso9660/CDROM    /       cd9660  ro      0       0' > "$workdir/etc/fstab"
+    rm -vf "$workdir/etc/rc.conf.local"
+else
+    echo '/dev/ufs/USB          /       ufs     ro      1       1' > "$workdir/etc/fstab"
+    echo 'root_rw_mount="NO"' > "$workdir/etc/rc.conf.local"
+fi
+
+# TODO: do not hardcode memory device size
+if ! grep -q Custom "$workdir/etc/rc.local";then
+    echo '
+# Custom Live CD/DVD read-write support
+if [ ! -d /tmp/rw ];then
+    mkdir -vp /tmp/rw
+    mdmfs -M -s 1024m md /tmp/rw
+
+    for d in /etc /var /root;do
+        mkdir -vp /tmp/rw/$d
+        mount -t unionfs /tmp/rw/$d $d
+    done
+fi
+' >> "$workdir/etc/rc.local"
+fi
+
+mv -vf "$workdir/etc/resolv.conf" "$workdir/etc/resolv.conf.backup"
+cp -vf /etc/resolv.conf "$workdir/etc/resolv.conf"
+jail -c path="$workdir" mount.devfs ip4.addr=192.0.2.100 interface=em0 command=/bin/sh
+mv -vf "$workdir/etc/resolv.conf.backup" "$workdir/etc/resolv.conf"
+
+if [ "$makeimg" == "no" ];then
+    mkisofs -J -R -b boot/cdboot -no-emul-boot -o "$isoout" "$workdir"
+else
+    makefs -B little -o label=USB -o version=2 "$imgout.part" "$workdir"
+    mkimg -v -s bsd -b "$workdir/boot/boot" -p freebsd-ufs:="$imgout.part" -o "$imgout.part2"
+    rm -vf "$imgout.part"
+    mkimg -v -s mbr -b "$workdir/boot/mbr" -p freebsd:="$imgout.part2" -o "$imgout"
+    rm -vf "$imgout.part2"
+fi
+
+rm -vfr "$workdir"