README
======
This directory contains logic to support a custom ROMFS start-up script.
This startup script is used by by the NSH when it starts provided that
CONFIG_NSH_ARCHROMFS=y. The script provides a ROMFS volue that will be
mounted at /etc and will look like this at run-time:
NuttShell (NSH) NuttX-7.13
This is the message of the day
nsh> ls -Rl /etc
/etc:
dr-xr-xr-x 0 .
dr-xr-xr-x 0 init.d/
-r--r--r-- 39 passwd
/etc/init.d:
dr-xr-xr-x 0 ..
-r--r--r-- 110 rcS
nsh>
/etc/init.d/rcS is the start-up script; /etc/passwd is a the password
file. It supports a single user:
USERNAME: admin
PASSWORD: Adminstrator
This directory structure is contained in the binary file etc.tar.gz and
can be modified per the following steps:
1. Unpack the directory structure:
tar zxf etc.tar.gz
2. Make modifications as desired.
3. Create the new ROMFS image.
genromfs -f romfs_image -d etc -V SimEtcVol
4. Convert the ROMFS image to a C header file
xxd -i image >nsh_romfsimg.h
5. Edit nsh_romfsimg.h, mark both data definitions as 'const' so that
that will be stored in FLASH.
6. Re-package the modified /etc directory
tar cvf etc.tar etc
gzip etc.tar
See the sim/nsh configuration for an example of the use of this file
system.
