no peek or poke under xenix?
terry
terry at wsccs.UUCP
Fri Mar 4 18:41:45 AEST 1988
In article <284 at dcdwest.UUCP>, phb at dcdwest.UUCP (Peter H. Berens) writes:
> We have a device driver for a memory mapped device that crashes the
> system when the board is not installed in the system and someone opens
> the device node. We would like to be able to use peek or poke in the
> open routine to determine if the memory addresses the board responds
> to are present
Use a setuid(geteuid()) root program (chmod 4755) to open /dev/mem
and lseek() to your offset location. Then just read.
:-)
PS: This is a nifty way to put one of thos damn clocks in the upper-right
hand corner of your screen... just write to the upper right-hand corner.
| Terry Lambert UUCP: ...!decvax!utah-cs!century!terry |
| @ Century Software or : ...utah-cs!uplherc!sp7040!obie!wsccs!terry |
| SLC, Utah |
| These opinions are not my companies, but if you find them |
| useful, send a $20.00 donation to Brisbane Australia... |
| 'There are monkey boys in the facility. Do not be alarmed; you are secure' |
More information about the Comp.unix.xenix
mailing list