xref: /titanic_52/usr/src/man/man3devinfo/di_prop_lookup_bytes.3devinfo (revision 6a5408e613dc0b372f722907d6c0b18e99c182dd) 
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 Copyright (c) 2001, Sun Microsystems, Inc. All Rights Reserved
 The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
 When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 di_prop_lookup_bytes 3DEVINFO "26 Mar 2001" "SunOS 5.11" "Device Information Library Functions"
 NAME
di_prop_lookup_bytes, di_prop_lookup_ints, di_prop_lookup_int64,
di_prop_lookup_strings - search for a property

 SYNOPSIS


cc [ flag... ] file... -ldevinfo [ library... ]
#include <libdevinfo.h>

int di_prop_lookup_bytes(dev_t dev, di_node_t node,
 const char *prop_name, uchar_t **prop_data);






int di_prop_lookup_ints(dev_t dev, di_node_t node,
 const char *prop_name, int **prop_data);






int di_prop_lookup_int64(dev_t dev, di_node_t node,
 const char *prop_name, int64_t **prop_data);






int di_prop_lookup_strings(dev_t dev, di_node_t node,
 const char *prop_name, char **prop_data);




 PARAMETERS

dev


dev_t of minor node with which the property is associated.
DDI_DEV_T_ANY is a wild card that matches all dev_t's, including
DDI_DEV_T_NONE.





node


Handle to the device node with which the property is associated.





prop_data


For di_prop_lookup_bytes(), the address to a pointer to an array of
unsigned characters containing the property data.
For di_prop_lookup_ints(), the address to a pointer to an array of
integers containing the property data.
For di_prop_lookup_int64(), the address to a pointer to an array of
64-bit integers containing the property data.
For di_prop_lookup_strings(), the address to a pointer to a buffer
containing a concatenation of null-terminated strings containing the property
data.





prop_name


Name of the property for which to search.




 DESCRIPTION

These functions return the value of a known property name type and dev_t
value. All memory allocated by these functions is managed by the library and
must not be freed by the caller.

 RETURN VALUES

If the property is found, the number of entries in prop_data is returned.
If the property is a boolean type, 0 is returned and the existence of this
property indicates the value is true. Otherwise, -1 is returned and errno
is set to indicate the error.

 ERRORS

These functions will fail if:


EINVAL


Invalid argument.





ENOTSUP


The snapshot contains no property information.





ENXIO


The property does not exist; try di_prom_prop_lookup_*().




 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:







ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityEvolving
MT-LevelSafe



 SEE ALSO

di_init(3DEVINFO), di_prom_prop_lookup_bytes(3DEVINFO),
libdevinfo(3LIB), attributes(5)


Writing Device Drivers