SVR5

iobitmapctl(D3)

iobitmapctl -- enable/disable/check user access to I/O ports

Synopsis

   #include <sys/types.h>
   #include <sys/iobitmap.h>
   #include <sys/ddi.h>
   
   int iobitmapctl(iob_request_t iob_rqt, ushort_t ports[])

Description

iobitmapctl is used to check and control user access to I/O ports.

Access control is on a per-process basis. iobitmapctl operates on the currently running process.

Arguments

iob_rqt: The type of I/O port manipulation request.
ports: Null-terminated list of the I/O ports to be manipulated.

Return values

On an IOB_CHECK request, iobitmapctl returns non-zero if user access is enabled for all specified ports, otherwise zero. On an IOB_ENABLE or IOB_DISABLE request, the return value is ERRNO.

Usage

Valid values for iob_rqt are:

IOB_ENABLE: Enable user access to the specified ports.
IOB_DISABLE: Disable user access to the specified ports.
IOB_CHECK: Check user access to the specified ports.

Context and synchronization

User context.

Hardware applicability

All

Version applicability

ddi: 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp