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#include <libnvpair.h> int nvlist_lookup_nvpair(nvlist_t *nvl, const char *name, nvpair_t **nvp);
boolean_t nvlist_exists(nvlist_t *nvl, const char *name);
The nvlist_lookup_nvpair() function returns the nvpair with the matching name, regardless of type. It is valid only for lists allocated with NV_UNIQUE_NAME. See nvlist_alloc(9F).
The nvlist_exists() function returns success if any nvpair exists with the given name. It is valid for all types of lists.
The nvlist_lookup_nvpair() function returns 0 on success and an error value on failure.
The nvlist_exists() function returns B_TRUE if an nvpair with the given name exists and B_FALSE otherwise.
The nvlist_lookup_nvpair() function will fail if: EINVAL
There is an invalid argument.
No matching name-value pair is found.
The list was not allocated with NV_UNIQUE_NAME.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Committed |
nvlist_lookup_nvpair(3NVPAIR), nvlist_alloc(9F), attributes(5)