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midge:tmpfs-version [2018/04/09 15:36] (current)
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 +===== tmpfs version =====
 +
 +This version mostly used for typical routers with big Read-Only partition.
 +
 +==== preserved files ====
 +//tmpfs// version have ''/​sbin/​flash''​ script which can be used for loads/saves important files from/to raw **MTD** partition (/​dev/​mtdblock3).
 +
 +**Usage:**
 +<​code>​
 +# /sbin/flash
 +Usage: /sbin/flash save | load [dst]
 +</​code>​
 +
 +By default this script saves: ''/​etc /usr/local /​root''​. Edit ''/​etc/​midge.save''​ for change defaults.
 +
 +==== packages ====
 +In tmpfs version also supports ''​ipkg''​ packages. But for preserving files ''​ipkg -d local''​ should be used \\
 +\\
 +Example:
 +<​code>​
 +# ipkg -d local update
 +Downloading http://​midge.vlad.org.ua/​ipkg/​Packages ...
 +Connecting to midge.vlad.org.ua[212.1.120.85]:​80
 +Packages ​            100% |*****************************| 11533       00:00 ETA
 +Done.
 +Updated list of available packages in /​usr/​lib/​ipkg/​lists/​midge
 +
 +# ipkg -d local install tc
 +
 +Downloading http://​midge.vlad.org.ua/​ipkg/​./​tc_0_mipsel.ipk ...
 +Connecting to midge.vlad.org.ua[212.1.120.85]:​80
 +tc_0_mipsel.ipk ​     100% |*****************************| 56732       00:00 ETA
 +Done.
 +Unpacking tc...Done.
 +Configuring tc...Done.
 +
 +
 +====== flash save ======
 +Normaly all changes you make at runtime to files on your router will be lost after next reboot. They become persistent if you type
 +<​code>​flash save</​code>​
 +So you write to the flash only by hand and your flash will not be destroyed by frequently writes of the operation system. After reboot data from rom will be overwriten by data from last ''​flash save''​.
 +
 +
 +The directories saved are defined in ''/​etc/​midge.save''​. They are saved into partition 4 on the flash behind bootloader (partition 1), kernel (partition 2) and squashfs (partition 3). See also [[details]].
 +
 +
 +If you increase the size of the kernel or squashfs partition you decrease the size of the ''​flash save''​ partition.
 +
 +
 +If you write a new firmware with the same partition sizes as the last firmware into your router, the flash partition will not be destroyed and during boot process data from new firmware rom will be overwritten by data from old flash save. This is possibly not what you want. As workaround write another firmware with different partition sizes temporary to your router before you finaly write your own firmware.
 +
 +
 +# flash save
 +Info: Saving to /​tmp/​flash.tar.gzip
 +tar: Removing leading '/'​ from member names
 +root/
 +...
 +etc/​midge.save
 +1+1 records in
 +1+1 records out
 +</​code>​
 +
 +
 +===== ipkg =====
 +Midge uses [[http://​handhelds.org/​moin/​moin.cgi/​Ipkg|ipkg]] as package manager. ipkg is debian apt-get like package manager written on shell, and uses ''​tar''​ or ''​ar''​. ​
 +Packages for midge you can find at http://​midge.vlad.org.ua/​ipkg/ ​
 +\\
 +\\
 +Also you can use packages from [[http://​openwrt.org|OpenWRT]] project, for more information see [[Links#​ipkg|Links/​ipkg]]
 +
 +==== some screen shots ====
 +=== update ===
 +<​code>​
 +midge# ipkg update
 +Downloading http://​midge.vlad.org.ua/​ipkg/​Packages ...
 +Connecting to midge.vlad.org.ua[212.1.120.85]:​80
 +Packages ​            100% |*****************************| ​ 6880       00:00 ETA
 +Done.
 +Updated list of available packages in /​usr/​lib/​ipkg/​lists/​midge
 +</​code>​
 +
 +=== install package ===
 +<​code>​
 +midge# ipkg install strace
 +Downloading http://​midge.vlad.org.ua/​ipkg/​./​strace_0_mipsel.ipk ...
 +Connecting to midge.vlad.org.ua[212.1.120.85]:​80
 +strace_0_mipsel.ipk ​ 100% |*****************************| 77666       00:00 ETA
 +Done.
 +Unpacking strace...Done.
 +Configuring strace...Done.
 +
 +midge# which strace
 +/​ram/​usr/​bin/​strace
 +</​code>​
 +
 +
 +<note tip>
 +See ''/​etc/​ipkg.conf''​ to enable another package sources
 +</​note>​
 +
 +<note tip>
 +By default packages installed to the RAM, if you want install to the root filesystem use ''​-d root''​ switch \\
 +\\
 +And see ''/​etc/​ipkg.conf''​
 +</​note>​
 +
 +===== tpkg =====
 +Midge also uses tpkg (tiny package) as package manager. tpkg is my own research for a simple and very light-weight debian apt-get like package manager, its written on shell, and uses tar.gz. ​
 +Packages for midge you can find at http://​midge.vlad.org.ua/​packages/​
 +
 +==== examples ====
 +=== show package ===
 +<​code>​
 +midge2# tpkg show vtun
 +Name: vtun
 +Filename: vtun.tar.gz
 +Size package/​installed:​ 41005/​105234
 +Description:​ TUN/TAP virual tunnel http://​vtun.sf.net "​Easiest way to create Virtual Tunnels over TCP/IP networks"​
 +</​code>​
 +
 +=== install package ===
 +<​code>​
 +midge2# tpkg install tcpdump
 +Connecting to midge.vlad.org.ua[212.1.120.85]:​80
 +tcpdump.control ​     100% |*****************************| ​  ​162 ​      00:00 ETA
 +Package tcpdump installed
 +midge2# which tcpdump
 +/​ram/​sbin/​tcpdump
 +midge2#
 +</​code>​
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midge/tmpfs-version.txt · Last modified: 2018/04/09 15:36 (external edit)