Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 08 May 1998 12:45:22 +0100

Ralph Lange wrote:

> You are right ... in a two-out-of-three way.
> 
> If the boot mechanism is set to ftp, the ioc will fetch both the binary and
> the symbol table using ftp. If it is set to rsh, rsh will be used in both
> cases. If you use bootp/tftp, the ioc uses tftp for the binary, but still
> rsh/ftp for the symbol table. 

How remarkably silly of WRS!  I've just checked in usrConfig.c, and it
loads the symbol table by calling netLoadSymTbl() which is only provided
in object format so this can't be changed.

> There is no way to make the ioc load the
> symbol file via tftp. (Has been proven with an ethernet sniffer.)

Ah, but there is - you build the symbol table into the vxWorks boot
image file itself.  There's a flag in configAll.h which does this, then
if you use tftp you can say Goodbye to rsh and ftp booting forever!

-- Andrew
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System