hwgraph.admin(D3X)hwgraph.admin(D3X)NAME
hwgraph.admin: device_admin_info_get, device_driver_admin_info_get-
retrieve administrative information for device driver
SYNOPSIS
#include <sys/types.h>
#include <sys/hwgraph.h>
#include <sys/driver.h>
#include <sys/ddi.h>
char *
device_admin_info_get( vertex_hdl_t dev_vhdl, char *info_name);
char *
device_driver_admin_info_get(char *driver_prefix, char *info_name);
Arguments
dev_vhdl
Vertex handle of a device vertex in the hwgraph.
info_name
Character string used as a key to identify desired information.
driver_prefix
Character string used as device driver's prefix.
DESCRIPTION
The lboot(1) command collects DEVICE_ADMIN and DRIVER_ADMIN directives
from files in /var/sysgen/system. These statements associate arbitrary
character strings with instances of devices or with device drivers. The
statement syntax is documented in system(4).
The DRIVER_ADMIN directive specifies a driver prefix, a label string, and
a value string. lboot associates the label and value tuple with the
driver prefix. The driver retrieves the string by calling
device_driver_admin_info_get().
The DEVICE_ADMIN directive specifies a path in the /hw filesystem, a
label string, and a value string. lboot stores all three strings. When
a vertex is created in the hwgraph (for example, using
hwgraph_char_device_add(), see hwgraph.dev(D3X)) such that it creates the
path given in DEVICE_ADMIN, the relevant DEVICE_ADMIN string is retrieved
and stored in the vertex. The driver can query for an admin string at
any time by calling device_admin_info_get().
In each case the meaning of the retrieved string is established by the
driver. These facilities allow a device driver to support arbitrary
"contracts" with the administrator using a single, simple mechanism.
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hwgraph.admin(D3X)hwgraph.admin(D3X)DIAGNOSTICS
These functions return NULL when no appropriate information is found, or
a pointer to a read-only copy of the information string when one is
found.
SEE ALSOlboot(1), system(4), hwgraph.dev(D3X), hwgraph.intro(D4X),
hwgraph.lblinfo(D3X).
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