nvpair_value_byte(3NVPAIR) Name-value Pair Library Functions nvpair_value_byte(3NVPAIR)
NAME
nvpair_value_byte, nvpair_value_boolean_value, nvpair_value_int8, nvpair_value_uint8, nvpair_value_int16, nvpair_value_uint16,
nvpair_value_int32, nvpair_value_uint32, nvpair_value_int64, nvpair_value_uint64, nvpair_value_string, nvpair_value_nvlist,
nvpair_value_boolean_array, nvpair_value_byte_array, nvpair_value_int8_array, nvpair_value_uint8_array, nvpair_value_int16_array,
nvpair_value_uint16_array, nvpair_value_int32_array, nvpair_value_uint32_array, nvpair_value_int64_array, nvpair_value_uint64_array,
nvpair_value_string_array, nvpair_value_nvlist_array - retrieve value from a name-value pair
SYNOPSIS
cc [ flag... ] file... -lnvpair [ library... ]
#include <libnvpair.h>
int nvpair_value_byte(nvpair_t *nvpair, uchar_t *val);
int nvpair_value_boolean_value(nvpair_t *nvpair, boolean_t *val);
int nvpair_value_int8(nvpair_t *nvpair, int8_t *val);
int nvpair_value_uint8(nvpair_t *nvpair, uint8_t *val);
int nvpair_value_int16(nvpair_t *nvpair, int16_t *val);
int nvpair_value_uint16(nvpair_t *nvpair, uint16_t *val);
int nvpair_value_int32(nvpair_t *nvpair, int32_t *val);
int nvpair_value_uint32(nvpair_t *nvpair, uint32_t *val);
int nvpair_value_int64(nvpair_t *nvpair, int64_t *val);
int nvpair_value_uint64(nvpair_t *nvpair, uint64_t *val);
int nvpair_value_string(nvpair_t *nvpair, char **val);
int nvpair_value_nvlist(nvpair_t *nvpair, nvlist_t **val);
int nvpair_value_boolean_array(nvpair_t *nvpair, boolean_t **val, uint_t *nelem);
int nvpair_value_byte_array(nvpair_t *nvpair, uchar_t **val, uint_t *nelem);
int nvpair_value_int8_array(nvpair_t *nvpair, int8_t **val, uint_t *nelem);
int nvpair_value_uint8_array(nvpair_t *nvpair, uint8_t **val, uint_t *nelem);
int nvpair_value_int16_array(nvpair_t *nvpair, int16_t **val, uint_t *nelem);
int nvpair_value_uint16_array(nvpair_t *nvpair, uint16_t **val, uint_t *nelem);
int nvpair_value_int32_array(nvpair_t *nvpair, int32_t **val, uint_t *nelem);
int nvpair_value_uint32_array(nvpair_t *nvpair, uint32_t **val, uint_t *nelem);
int nvpair_value_int64_array(nvpair_t *nvpair, int64_t **val, uint_t *nelem);
int nvpair_value_uint64_array(nvpair_t *nvpair, uint64_t **val, uint_t *nelem);
int nvpair_value_string_array(nvpair_t *nvpair, char ***val, uint_t *nelem);
int nvpair_value_nvlist_array(nvpair_t *nvpair, nvlist_t ***val, uint_t *nelem);
PARAMETERS
nvpair Name-value pair to be processed.
nelem Address to store the number of elements in value.
val Address to store the value or the starting address of the array value.
DESCRIPTION
These functions retrieve the value of nvpair. The data type of nvpair must match the interface name for the call to be successful.
There is no nvpair_value_boolean(); the existence of the name implies the value is true.
For array data types, including string, the memory containing the data is managed by the library and references to the value remains valid
until nvlist_free() is called on the nvlist_t from which nvpair is obtained. See nvlist_free(3NVPAIR).
The value of an nvpair may not be retrieved after the nvpair has been removed from or replaced in an nvlist. Replacement can occur during
pair additions to nvlists created with NV_UNIQUE_NAME_TYPE and NV_UNIQUE_NAME. See nvlist_alloc(3NVPAIR).
RETURN VALUES
These functions return 0 on success and an error value on failure.
ERRORS
These functions will fail if:
EINVAL Either one of the arguments is NULL or the type of nvpair does not match the function name.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+----------------------------+------------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+------------------------------+
|Interface Stability | Evolving |
+----------------------------+------------------------------+
|MT-Level | MT-Safe |
+----------------------------+------------------------------+
SEE ALSO
libnvpair(3LIB), nvlist_alloc(3NVPAIR), attributes(5)
SunOS 5.10 1 Nov 2003 nvpair_value_byte(3NVPAIR)