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| Name-value Pair Library Functions | nvpair_value_byte(3NVPAIR) |
| | nvpair_value_byte, nvpair_value_int16, nvpair_value_uint16, nvpair_value_int32, nvpair_value_uint32, nvpair_value_int64, nvpair_value_uint64, nvpair_value_string, nvpair_value_byte_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 - retrieve value from a name-value pair |
SYNOPSIS
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cc [ flag ... ] file ...-lnvpair [ library ... ]
#include <libnvpair.h> int nvpair_value_byte(nvpair_t *nvpair, uchar_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_byte_array(nvpair_t *nvpair, uchar_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); |
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nvpair
- Name-value pair to be processed.
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nelem
- Address to store the number of elements in value.
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val
- Address to store the value or the starting address of the array value.
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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).
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These functions return 0 on success and an error value on failure.
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These functions will fail if:
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EINVAL
- Either one of the arguments is NULL or the type of nvpair does not match the function name.
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See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Evolving |
| MT-Level | MT-Safe |
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