hwi_find_unit()

Arguments:

hwi_off

The offset of a device.

Library:

libdrvr

Use the -l drvr option to qcc to link against this library.

Description:

Multiple instances of a device or bus may exist in the hwinfo section of the system page. The hwi_find_unit() function determines which instance of the item hwi_off is.

Note that this routine resolves all synonyms and returns the instance of a real device or bus, not the instance of a synonym name. For example, if the second instance of synonym name foo resolves to the fourth instance of the real device bar, hwi_find_unit() returns 3 (base 0 instance numbering).

Returns:

The device or bus instance (or unit #, base 0) or -1 on error.

Classification:

QNX OS