nvlist_next_nvpair(3NVPAIR)				 Name-value Pair Library Functions			       nvlist_next_nvpair(3NVPAIR)

NAME

       nvlist_next_nvpair, nvpair_name, nvpair_type - return data regarding name-value pairs

SYNOPSIS

       cc [ flag... ] file... -lnvpair [ library... ]
       #include <libnvpair.h>

       nvpair_t *nvlist_next_nvpair(nvlist_t *nvl, nvpair_t *nvpair);

       char *nvpair_name(nvpair_t *nvpair);

       data_type_t nvpair_type(nvpair_t *nvpair);

PARAMETERS

       nvl	 The nvlist_t to be processed.

       nvpair	 Handle to a name-value pair.

DESCRIPTION

       The  nvlist_next_nvpair()  function  returns a handle to the next nvpair in the list following nvpair. If nvpair is NULL, the first pair is
       returned. If nvpair is the last pair in the nvlist, NULL is returned.

       The nvpair_name() function returns a string containing the name of nvpair.

       The nvpair_type() function retrieves the value of the nvpair in the form of enumerated type data_type_t. This  is  used	to  determine  the
       appropriate nvpair_*() function to call for retrieving the value.

RETURN VALUES

       Upon successful completion, nvpair_name() returns a string containing the name of the name-value pair.

       Upon successful completion, nvpair_type() returns an enumerated data type data_type_t. Possible values for data_type_t are as follows:

	   o	  DATA_TYPE_BOOLEAN

	   o	  DATA_TYPE_BOOLEAN_VALUE

	   o	  DATA_TYPE_BYTE

	   o	  DATA_TYPE_INT8

	   o	  DATA_TYPE_UINT8

	   o	  DATA_TYPE_INT16

	   o	  DATA_TYPE_UINT16

	   o	  DATA_TYPE_INT32

	   o	  DATA_TYPE_UINT32

	   o	  DATA_TYPE_INT64

	   o	  DATA_TYPE_UINT64

	   o	  DATA_TYPE_STRING

	   o	  DATA_TYPE_NVLIST

	   o	  DATA_TYPE_BOOLEAN_ARRAY

	   o	  DATA_TYPE_BYTE_ARRAY

	   o	  DATA_TYPE_INT8_ARRAY

	   o	  DATA_TYPE_UINT8_ARRAY

	   o	  DATA_TYPE_INT16_ARRAY

	   o	  DATA_TYPE_UINT16_ARRAY

	   o	  DATA_TYPE_INT32_ARRAY

	   o	  DATA_TYPE_UINT32_ARRAY

	   o	  DATA_TYPE_INT64_ARRAY

	   o	  DATA_TYPE_UINT64_ARRAY

	   o	  DATA_TYPE_STRING_ARRAY

	   o	  DATA_TYPE_NVLIST_ARRAY

       Upon reaching the end of a list, nvlist_next_pair() returns NULL. Otherwise, the function returns a handle to next nvpair in the list.

       These and other libnvpair(3LIB) functions cannot manipulate nvpairs after they have 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).

ERRORS

       No errors are defined.

EXAMPLES

       Example 1 Example of usage of nvlist_next_nvpair().

	 /*
	  * usage of nvlist_next_nvpair()
	  */
	  static int
	  edit_nvl(nvlist_t *nvl)
	  {
	      nvpair_t *curr = nvlist_next_nvpair(nvl, NULL);

	      while (curr != NULL) {
		  int err;
		 nvpair_t *next = nvlist_next_nvpair(nvl, curr);

		 if (!nvl_check(curr))
		     if ((err = nvlist_remove(nvl, nvpair_name(curr),
			 nvpair_type(curr))) != 0)
			     return (err);

		  curr = next;
	      }
	     return(0);
	  }

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)

NOTES

       The enumerated nvpair data types might not be an exhaustive list and new data types can be added.  An application using the data type  enu-
       meration, data_type_t, should be written to expect or ignore new data types.

SunOS 5.11							    2 Feb 2004					       nvlist_next_nvpair(3NVPAIR)