/etc/path_to_inst records mappings of physical device names to instance numbers.
The instance number of a device is encoded in its minor number, and is the way that a device driver determines which of the possible devices that it may drive is referred to by a given special file.
In order to keep instance numbers persistent across reboots, the system records them in /etc/path_to_inst.
This file is read only at boot time, and is updated by add_drv.1m and drvconfig.1m
Note that it is generally not necessary for the system administrator to change this file, as the system will maintain it.
The system administrator can change the assignment of instance numbers by editing this file and doing a reconfiguration reboot. However, any changes made in this file will be lost if add_drv.1m or drvconfig.1m is run before the system is rebooted.
Each instance entry is a single line of the form:
"physical name" instance number
"/fd@1,f7200000" 0 "/audio@1,f7201000" 0 "/sbus@1,f8000000/esp@0,800000/sd@0,0" 0x0 "/sbus@1,f8000000/esp@0,800000/sd@1,0" 0x1 "/sbus@1,f8000000/esp@0,800000/sd@2,0" 0x2 "/sbus@1,f8000000/esp@0,800000/sd@3,0" 0x3 "/sbus@1,f8000000/le@0,c00000" 0
For the same reasons, changes should not be made to this file without careful consideration.
Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97