Linux router help needed Post: 302996177

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Top Forums UNIX for Beginners Questions & Answers Linux router help needed Post 302996177 by ygemici on Friday 21st of April 2017 02:45:18 AM

04-21-2017

Registered User

Hi , apoklyps3

Your linux is embedded ( for that Your "rootfs" ( "/") is in like RAM drive/disk ( as temp/pivot root ) -> then you cannot remount for r/w and this only r/w only at runtime ). )

( Your firmware in the flash ( mostly ) loaded to the RAM at the boot stages by bootloader ( like u-boot ).. )

Your "/dev/root" device is mounted to (/) point that is "read-only fs" with squashfs ( compressed ) that located in the flash ( or sometimes sdcard ? )
it should contains all binaries , startup files , default config files and the others....

* Your mount command is wrong as already @Corona688 said this.
* And you cannot re-mount the squahfs for r/w ( try with "/dev/root" lets see what happen or not )

Your device ( /dev/mtdblock5 is read/writable block device ( Flash or disk-on-chip ) with "rootfstype=jffs2" and
then you can read the some configs or other related files from it.
But also you can write via "/dev/mtd5" ( safe way ) char device to flash partiton which is writable side.
Shortly , mount command works via block device and must used via the char device for i/o operations..
Your ( /apps ) mount point is writable and has contains user apps/data/configs ( already i said above ) and these are permanent.
Look at the some details..
Managing flash storage with Linux

( the others are Kernel partitions from RAM or other memory chips ( ssd ? ) .. )

* You can look for the details of the flash partitions ( "cat /proc/mtd" )

Now i m not sure is there a easy way ? , ( because i have no knowlodge about the routers and firmware )
But i can say , you have to create the customized firmware and you must flash it to router for permanent solution.. ( if it has not nvram settings for non-squash filesystem support )
( or you must unsquashfs to extract the contents to writable partition then mksquashfs to create new image from thises and write it to the target mtd device ( like "writemtd.c" codes or image dump tools )

Another try , you maybe update the router firmware with ( open-source ) alternatives like dd-wrt , open-wrt .. ( if your product ( Kaon media ) vendor does not the new firmware..)

But best way as @Corona688 said , you must update the new firmware from original Kaon hardware vendor if there is..

Good lucks
regards
ygemici

Last edited by ygemici; 04-21-2017 at 03:58 AM..

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LEARN ABOUT NETBSD

bt3c

BT3C(4) 						   BSD Kernel Interfaces Manual 						   BT3C(4)

NAME

     bt3c -- 3Com Bluetooth PC Card driver

SYNOPSIS

     bt3c* at pcmcia? function ?

DESCRIPTION

     The bt3c driver provides support for the 3Com Bluetooth PC Card, model 3CRWB6096, to the Bluetooth protocol stack.

FIRMWARE

     This card needs firmware loaded before it will work. Due to copyright restrictions we cannot distribute the firmware with NetBSD, but if you
     have the card then you should have received a CD with the drivers on, or you may download the latest version from the 3Com website. Create a
     directory named bt3c in the search path of the firmload(9) kernel subsystem. Now, extract the driver archive and find the firmware file
     called BT3CPCC.bin, and place this file in the newly created directory. The firmware will be loaded automatically as needed.

DIAGNOSTICS

     bt3c%d: Cannot open firmware
	  This will be printed to the console if the device cannot open the firmware file as described above.

     bt3c%d: Antenna In
     bt3c%d: Antenna Out
	  If the kernel is compiled with the DIAGNOSTIC option, these messages will be produced on the console when the card antenna position is
	  changed.

     bt3c%d: sleeping
     bt3c%d: waking up
	  These messages will be produced when the card is enabled or disabled due to power change events.

SEE ALSO

     bluetooth(4), pcmcia(4), firmload(9)

HISTORY

     This bt3c device driver was written by Iain Hibbert using FreeBSD and BlueZ drivers as a reference.  It first appeared in NetBSD 4.0.

BUGS

BSD
								 January 14, 2006							       BSD