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### TODO

On reboot, need to:

    /etc/init.d/network restart
    mount /cgroup/
    lxc-start -n wheezy -f /data/wheezy/config -d

    lxc-start -n social -f /data/social/config -d
    lxc-start -n library -f /data/library/config -d

### Recompiling Generic OpenWRT Attitude Adjustment from upstream

Note: can skip the patching below if you just use
http://github.com/bnewbold/openwrt branch "soekris" and copy rooter.config to
.config.

Note: GRUB2-based builds from trunk don't seem to work, so make sure the
Attitude Adjustment branch is used and the grub2 build option is not enabled. 

The official OpenWRT build documentation contains a set of host-system package
dependancies (build-essential, etc):

    http://wiki.openwrt.org/doc/howto/buildroot.exigence
    http://wiki.openwrt.org/doc/howto/build

Git clone:

    git://nbd.name/openwrt.git

In base directory, fetch package feeds:

    ./scripts/feeds update -a
    # TODO: maybe this is too much?
    ./scripts/feeds install -a
    # or,
    ./scripts/feeds install -d m build-essential

Apply the two following patches (unless they have been unstreamed) (patch -p0 <
file.patch):

    https://dev.openwrt.org/ticket/10525
    https://dev.openwrt.org/ticket/12262

"make menuconfig", select x86 and net6501 as target, save config, run "make
defconfig" to automatically setup target specific stuff (?).

"make kernel_menuconfig CONFIG_TARGET=subtarget" and ensure the following is
checked:

    Device Drivers  --->
        <*> Serial ATA and Parallel ATA drivers --->
            [*] AHCI SATA support

ext2 no longer necessary by default... "Use ext4 for ext2/ext3 file systems"?

## rooter-Specific OpenWRT Build Tweaks

In menuconfig:

    global build settings
        disable binary stripping
    advanced
        toolchain options
            eglibc (not ulibc)
            gcc 4.7.0 (not gcc 4.6.x with Linaro enhancements)
    target build settings:
        root fs archives: tar.gz
        root filesystem images: ext4
        38400 serial port baud rate
        don't gzip images
        16 kernel partition size (MB)
        196 root partition size
    base system
        bridge
        libpthread
        qos-scripts
        wireless-tools
    ipv6
        firewall
        traceroute6
        ndisc6
        6rd
        6scripts
        ahcpd
        ipv6calc-mini
        radvd
        radvdump
    luci
        luci, luci-ssl
        luci-app-ahcp
        luci-app-ddns
        luci-app-diag-devinfo
        luci-app-qos
        luci-app-radvd
        luci-app-statistics
    kernel
        kmod-usb-acm
        kmod-usb-net
        kmod-usb-storage
        all intel wireless, as optional modules
        fs-vfat, fs-msdosfs
        ralink usb
    network
        version control
            git
            subversion client
        file transfer
            wget
        bmon
        ifconfig
        hostname
        mtr
        netstat
        nisdomainname
        netcat
        netperf
        netstat-nat
        ngrep
    utilities
        vim
        gzip
        gnupg
        e2fsprogs
        mkdosfs
        resize2fs
        tune2fs
        fdisk
        cfdisk
        lsblk
        hdparam
        bonniexx
    development
        build-essentials
    libraries
        libgmp (else gcc compile errors)

TODO: actually get build-essentials compiling
TODO: mkdosfs download link is dead

if compiling build-essentials, might need:

    bnewbold@ziggy:~/code/openwrt_trunk$ cat /home/bnewbold/code/openwrt_trunk/toolchain/gcc/patches/4.7.0/209-automake-bullshit.patch
    --- a/config/override.m4
    +++ b/config/override.m4
    @@ -29,7 +29,7 @@

    dnl Ensure exactly this Autoconf version is used
    m4_ifndef([_GCC_AUTOCONF_VERSION],
    -  [m4_define([_GCC_AUTOCONF_VERSION], [2.64])])
    +  [m4_define([_GCC_AUTOCONF_VERSION], [2.68])])

    dnl Test for the exact version when AC_INIT is expanded.
    dnl This allows to update the tree in steps (for testing)

## Install an OpenWRT image (first time)

Use unetbootin to write a generic linux distro (like debian stable or arch
linux) to a USB stick. Edit the syslinux.cfg file so it looks like:

    default menu.c32
    default arch
    menu title UNetbootin
    timeout 30
    serial 0 38400
    console 0
    prompt 0

    label arch
    menu label Arch
    kernel /ubnkern
    append vga=normal initrd=/ubninit ../../ -- quiet console=ttyS0,38400 earlyprint=serial,ttyS0,38400

Copy over all the .img files required to the root directory of this device,
then boot up (connect via serial to select boot device). Wait until you get to
either a login or a prompt, then copy over the entire image to the device:

    # dd if=openwrt-x86-net6501-combined-squashfs.img of=/dev/sda bs=1M

Reboot with all defaults!

## Misc OpenWRT notes

To allow remote SSH logins on port 22, add the following custom firewall rule:

    iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT
    iptables -A input_wan -p tcp --dport 22 -j ACCEPT


To allow all incoming requests to the router, add the following to
/etc/config/firewall:

config redirect
        option src      wan
        option proto    all
        option dest_ip  192.168.1.1

To do a sysupgrade, use a full combined .img file, eg scp and run:

    sysupgrade openwrt-x86-net6501-combined-squashfs.img

NOTE: sysupgrade does not seem to work across ulibc/eglibc change?

## LXC Compilation notes

Make sure the following packages are installed (if they weren't from above):

    lsblk
    perl
    file
    vim
    util > coreutils
    admin > debootstrap (has requirements)
    block-mount

Select the "getopt" function in busybox:

    base system > busybox > getopt and support option -l

Put the lxc and attr packages in ./package, then run:

    ./scripts/feeds install libattr
    ./scripts/feeds install libcap
    ./scripts/feeds install lxc

Do menuconfig and select these (in Utilities), and also the bash shell.

To compile individual packages, try:

    make package/lxc/compile
    make package/lxc/install
    make package/index

NOTE: "cgroup namespace support" is not an option in kernel configuration any
more, but shows up as a requirement in lxc-checkconfig. LXC works regardless,
may be some security issues though? See also:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/827798

## LXC Configuration notes

Ok, once all the above is compiled and loaded up, ready to configure the
OpenWRT host.

Create /cgroups directory and a mount point like /data.

Edit /etc/conf/fstab:

    config 'mount'
            option 'target'   '/data'
            option 'device'   '/dev/sda3'
            option 'fstype'   'ext4'
            option 'options'  'rw,sync'
            option 'enabled'  '1'
            option 'enabled_fsck' '1'
    config 'mount'
            option 'target'   '/cgroup'
            option 'device'   'cgroup'
            option 'fstype'   'cgroup'
            option 'options'  'none'
            option 'enabled'  '1'
            option 'enabled_fsck' '0'

Enable block-mount ("/etc/init.d/fstab enable") and start it
("/etc/init.d/fstab start"). 

Copy the devices.tar.gz file to /usr/share/debootstrap/devices.tar.gz.

Next build a debian rootfs. This is rather slow the first time around. Make
sure /data is mounted, then run the rooter-optimized version of lxc-wheezy:

    mkdir -p /data/wheezy
    mkdir -p /data/wheezy/mnt
    ./lxc-wheezy -p /data/wheezy

Edit /data/wheezy/config and add (or edit) two lines:

    lxc.utsname = wheezy
    lxc.mount.entry=/data/pub /data/wheezy/rootfs/pub none bind 0 0

Might need to change SSH listen port:

    vi /data/wheezy/rootfs/etc/ssh/sshd_config
    # edit "Port" line
 
Try starting lxc-start:

    lxc-start -n wheezy -f /data/wheezy/config

If you are SSH'd in and get an error about file descriptor fd 7, you may need
to do:

    lxc-start -n wheezy -f /data/wheezy/config 7<&- 8<&-

Horray!

## Blueprints

git clone /data/blueprints/ /data/social/rootfs/root/.blueprint --bare -b rooter-wheezy



## TODOs

create a set of rooter-x86-net6501 images with:
- set local subnet to 192.168.42.1
- overlay devices.tar.gz (?)
- default mounted /data and /cgroup (via base-files)
- lxc wheezy init script, start by default

ttt functionality:
- *.ttt.rooter.is DNS
- openvpn tunnel
- remote ipv4 reverse proxy
- remote netcat ssh proxy/tunnel
- some kind of media sharing
- local hostname DNS

TODO: remove excess kernel modules for faster/cleaner boot

NOTE: dd if=openwrt-x86-net6501-rootfs-squashfs.img of=/dev/sda2 bs=1M

- move ./files content to packages
- clean up and upstream net6501 directions, notes, patches
- clean up and upstream libattr and lxc stuff patches

TODO: zgrep, IKCONFIG_PROC
TODO: mtr broken?

### CONFIG BACKUP

/data/wheezy/conf:

lxc.utsname = ttt.rooter.is
lxc.tty = 4
lxc.pts = 1024
lxc.rootfs = /data/wheezy/rootfs
lxc.rootfs.mount = /data/wheezy/mnt
lxc.cgroup.devices.deny = a
# /dev/null and zero
lxc.cgroup.devices.allow = c 1:3 rwm
lxc.cgroup.devices.allow = c 1:5 rwm
# consoles
lxc.cgroup.devices.allow = c 5:1 rwm
lxc.cgroup.devices.allow = c 5:0 rwm
lxc.cgroup.devices.allow = c 4:0 rwm
lxc.cgroup.devices.allow = c 4:1 rwm
# /dev/{,u}random
lxc.cgroup.devices.allow = c 1:9 rwm
lxc.cgroup.devices.allow = c 1:8 rwm
lxc.cgroup.devices.allow = c 136:* rwm
lxc.cgroup.devices.allow = c 5:2 rwm
# rtc
lxc.cgroup.devices.allow = c 254:0 rwm

# mounts point
lxc.mount.entry=proc /data/wheezy/rootfs/proc proc nodev,noexec,nosuid 0 0
lxc.mount.entry=sysfs /data/wheezy/rootfs/sys sysfs defaults  0 0
lxc.mount.entry=/data/pub /data/wheezy/rootfs/pub none bind 0 0

### Wireless

Want at least:

    wpa-supplicant
    wpa-cli
    hostapd-mini
    wireless-tools
    collectd-mod-wireless
    iw
    iwconfig
    kmod-mac80211
    kmod-cfg80211
    crda
    iwinfo
    libiwinfo-lua

Possibly want:

    wavemon (monitoring)

TODO: configure open throttled guest WLAN:

    http://wiki.openwrt.org/doc/recipes/guest-wlan#step.5limit.bandwidth.of.the.connection