illumos: manual page: di_path_prop_lookup

DI_PATH_PROP_LOOKUP_BYTES(3DEVINFO) Device Information Library Functions

NAME

di_path_prop_lookup_bytes, di_path_prop_lookup_int64s,
di_path_prop_lookup_ints, di_path_prop_lookup_strings - search for a path
property

SYNOPSIS

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

int di_path_prop_lookup_bytes(di_path_t path,
const char *prop_name);

int di_path_prop_lookup_int64s(di_path_t path,
const char *prop_name);

int di_path_prop_lookup_ints(di_path_t path,
const char *prop_name, char **prop_data);

int di_path_prop_lookup_strings(di_path_t path,
const char *prop_name, char **prop_data);

PARAMETERS

path
The handle to a path node in a di_init(3DEVINFO).

prop_name
The name of property for which to search.

prop_data
For di_path_prop_lookup_bytes(), the address to a pointer to
an array of unsigned characters containing the property
data.

For di_path_prop_lookup_int64(), the address to a pointer to
an array of 64-bit integers containing the property data.

For di_path_prop_lookup_ints(), the address to a pointer to
an array of integers containing the property data.

For di_path_prop_lookup_strings(), the address to a pointer
to a buffer containing a concatenation of null-terminated
strings containing the property data.

DESCRIPTION

These functions return the value of a known property name and type.

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.
Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

These functions will fail if:

EINVAL
One of the arguments is invalid.

ENOTSUP
The snapshot contains no property information.

ENXIO
The path property does not exist.

ATTRIBUTES