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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:59:05 -0400 |
| commit | 1f19f33e45791ea59aed048796fc68672c6723a5 (patch) | |
| tree | 54625fba89e91d1c2177801ec635e8528bba937f /static/freebsd/man9/nv.9 4.html | |
| parent | ac5e55f5f2af5b92794c2aded46c6bae85b5f5ed (diff) | |
docs: Removed Precompiled HTML
Diffstat (limited to 'static/freebsd/man9/nv.9 4.html')
| -rw-r--r-- | static/freebsd/man9/nv.9 4.html | 1177 |
1 files changed, 0 insertions, 1177 deletions
diff --git a/static/freebsd/man9/nv.9 4.html b/static/freebsd/man9/nv.9 4.html deleted file mode 100644 index 0dc22c75..00000000 --- a/static/freebsd/man9/nv.9 4.html +++ /dev/null @@ -1,1177 +0,0 @@ -<table class="head"> - <tr> - <td class="head-ltitle">NV(9)</td> - <td class="head-vol">Kernel Developer's Manual</td> - <td class="head-rtitle">NV(9)</td> - </tr> -</table> -<div class="manual-text"> -<section class="Sh"> -<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> -<p class="Pp"><code class="Nm">nvlist_create</code>, - <code class="Nm">nvlist_destroy</code>, - <code class="Nm">nvlist_error</code>, - <code class="Nm">nvlist_set_error</code>, - <code class="Nm">nvlist_empty</code>, <code class="Nm">nvlist_flags</code>, - <code class="Nm">nvlist_exists</code>, <code class="Nm">nvlist_free</code>, - <code class="Nm">nvlist_clone</code>, <code class="Nm">nvlist_dump</code>, - <code class="Nm">nvlist_fdump</code>, <code class="Nm">nvlist_size</code>, - <code class="Nm">nvlist_pack</code>, <code class="Nm">nvlist_unpack</code>, - <code class="Nm">nvlist_send</code>, <code class="Nm">nvlist_recv</code>, - <code class="Nm">nvlist_xfer</code>, - <code class="Nm">nvlist_in_array</code>, - <code class="Nm">nvlist_next</code>, <code class="Nm">nvlist_add</code>, - <code class="Nm">nvlist_move</code>, <code class="Nm">nvlist_get</code>, - <code class="Nm">nvlist_take</code>, <code class="Nm">nvlist_append</code> - — <span class="Nd">library for name/value pairs</span></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="LIBRARY"><a class="permalink" href="#LIBRARY">LIBRARY</a></h1> -<p class="Pp"><span class="Lb">Name/value pairs library (libnv, -lnv)</span></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> -<p class="Pp"><code class="In">#include - <<a class="In">sys/nv.h</a>></code></p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_create</code>(<var class="Fa" style="white-space: nowrap;">int - flags</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_destroy</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">nvlist_error</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_set_error</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">int - error</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_empty</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">nvlist_flags</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_in_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_clone</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_dump</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">int - fd</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_fdump</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">FILE - *fp</var>);</p> -<p class="Pp"><var class="Ft">size_t</var> - <br/> - <code class="Fn">nvlist_size</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">void *</var> - <br/> - <code class="Fn">nvlist_pack</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">size_t - *sizep</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_unpack</code>(<var class="Fa" style="white-space: nowrap;">const - void *buf</var>, <var class="Fa" style="white-space: nowrap;">size_t - size</var>, <var class="Fa" style="white-space: nowrap;">int - flags</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">nvlist_send</code>(<var class="Fa" style="white-space: nowrap;">int - sock</var>, <var class="Fa" style="white-space: nowrap;">const nvlist_t - *nvl</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_recv</code>(<var class="Fa" style="white-space: nowrap;">int - sock</var>, <var class="Fa" style="white-space: nowrap;">int - flags</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_xfer</code>(<var class="Fa" style="white-space: nowrap;">int - sock</var>, <var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">int - flags</var>);</p> -<p class="Pp"><var class="Ft">const char *</var> - <br/> - <code class="Fn">nvlist_next</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">int - *typep</var>, <var class="Fa" style="white-space: nowrap;">void - **cookiep</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_type</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int - type</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_null</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_bool</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_number</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_string</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_nvlist</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_descriptor</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_binary</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_bool_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_number_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_string_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_exists_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_null</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_bool</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">bool - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_number</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">uint64_t - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_string</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const char - *value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_stringf</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const char - *valuefmt</var>, - <var class="Fa" style="white-space: nowrap;">...</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_stringv</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const char - *valuefmt</var>, <var class="Fa" style="white-space: nowrap;">va_list - valueap</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_nvlist</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const nvlist_t - *value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_descriptor</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_binary</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const void - *value</var>, <var class="Fa" style="white-space: nowrap;">size_t - size</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_bool_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const bool - *value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_number_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const uint64_t - *value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_string_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const char * const - * value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const nvlist_t * - const * value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_add_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const int - *value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_string</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">char - *value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_nvlist</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">nvlist_t - *value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_descriptor</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_binary</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">void *value</var>, - <var class="Fa" style="white-space: nowrap;">size_t size</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_bool_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">bool *value</var>, - <var class="Fa" style="white-space: nowrap;">size_t nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_number_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">uint64_t - *value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_string_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">char - **value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">nvlist_t - **value</var>, <var class="Fa" style="white-space: nowrap;">size_t - nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_move_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int *value</var>, - <var class="Fa" style="white-space: nowrap;">size_t nitems</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_get_bool</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">uint64_t</var> - <br/> - <code class="Fn">nvlist_get_number</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">const char *</var> - <br/> - <code class="Fn">nvlist_get_string</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">const nvlist_t *</var> - <br/> - <code class="Fn">nvlist_get_nvlist</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">nvlist_get_descriptor</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">const void *</var> - <br/> - <code class="Fn">nvlist_get_binary</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *sizep</var>);</p> -<p class="Pp"><var class="Ft">const bool *</var> - <br/> - <code class="Fn">nvlist_get_bool_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">const uint64_t *</var> - <br/> - <code class="Fn">nvlist_get_number_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">const char * const *</var> - <br/> - <code class="Fn">nvlist_get_string_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">const nvlist_t * const *</var> - <br/> - <code class="Fn">nvlist_get_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">const int *</var> - <br/> - <code class="Fn">nvlist_get_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">const nvlist_t *</var> - <br/> - <code class="Fn">nvlist_get_parent</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">void - **cookiep</var>);</p> -<p class="Pp"><var class="Ft">const nvlist_t *</var> - <br/> - <code class="Fn">nvlist_get_array_next</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>);</p> -<p class="Pp"><var class="Ft">const nvlist_t *</var> - <br/> - <code class="Fn">nvlist_get_pararr</code>(<var class="Fa" style="white-space: nowrap;">const - nvlist_t *nvl</var>, <var class="Fa" style="white-space: nowrap;">void - **cookiep</var>);</p> -<p class="Pp"><var class="Ft">bool</var> - <br/> - <code class="Fn">nvlist_take_bool</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">uint64_t</var> - <br/> - <code class="Fn">nvlist_take_number</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">char *</var> - <br/> - <code class="Fn">nvlist_take_string</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t *</var> - <br/> - <code class="Fn">nvlist_take_nvlist</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">int</var> - <br/> - <code class="Fn">nvlist_take_descriptor</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void *</var> - <br/> - <code class="Fn">nvlist_take_binary</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *sizep</var>);</p> -<p class="Pp"><var class="Ft">bool *</var> - <br/> - <code class="Fn">nvlist_take_bool_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">uint64_t **</var> - <br/> - <code class="Fn">nvlist_take_number_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">char **</var> - <br/> - <code class="Fn">nvlist_take_string_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">nvlist_t **</var> - <br/> - <code class="Fn">nvlist_take_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">int *</var> - <br/> - <code class="Fn">nvlist_take_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">size_t - *nitems</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_append_bool_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const bool - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_append_number_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const uint64_t - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_append_string_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const char * const - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_append_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">const nvlist_t * - const value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_append_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int - value</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_type</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>, <var class="Fa" style="white-space: nowrap;">int - type</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_null</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_bool</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_number</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_string</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_nvlist</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_descriptor</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_binary</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_bool_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_number_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_string_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_nvlist_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -<p class="Pp"><var class="Ft">void</var> - <br/> - <code class="Fn">nvlist_free_descriptor_array</code>(<var class="Fa" style="white-space: nowrap;">nvlist_t - *nvl</var>, <var class="Fa" style="white-space: nowrap;">const char - *name</var>);</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> -<p class="Pp">The <code class="Nm">libnv</code> library permits creating and - managing name value pairs as well as sending and receiving them over - sockets. A group (list) of name value pairs is called an - <code class="Nm">nvlist</code>. The API supports the following data types - for values:</p> -<dl class="Bl-ohang Bd-indent"> - <dt id="null"><a class="permalink" href="#null"><b class="Sy">null</b></a> - (<a class="permalink" href="#NV_TYPE_NULL"><b class="Sy" id="NV_TYPE_NULL">NV_TYPE_NULL</b></a>)</dt> - <dd>There is no data associated with the name.</dd> - <dt id="bool"><a class="permalink" href="#bool"><b class="Sy">bool</b></a> - (<a class="permalink" href="#NV_TYPE_BOOL"><b class="Sy" id="NV_TYPE_BOOL">NV_TYPE_BOOL</b></a>)</dt> - <dd>The value can be either <code class="Dv">true</code> or - <code class="Dv">false</code>.</dd> - <dt id="number"><a class="permalink" href="#number"><b class="Sy">number</b></a> - (<a class="permalink" href="#NV_TYPE_NUMBER"><b class="Sy" id="NV_TYPE_NUMBER">NV_TYPE_NUMBER</b></a>)</dt> - <dd>The value is a number stored as <var class="Vt">uint64_t</var>.</dd> - <dt id="string"><a class="permalink" href="#string"><b class="Sy">string</b></a> - (<a class="permalink" href="#NV_TYPE_STRING"><b class="Sy" id="NV_TYPE_STRING">NV_TYPE_STRING</b></a>)</dt> - <dd>The value is a C string.</dd> - <dt id="nvlist"><a class="permalink" href="#nvlist"><b class="Sy">nvlist</b></a> - (<a class="permalink" href="#NV_TYPE_NVLIST"><b class="Sy" id="NV_TYPE_NVLIST">NV_TYPE_NVLIST</b></a>)</dt> - <dd>The value is a nested nvlist.</dd> - <dt id="descriptor"><a class="permalink" href="#descriptor"><b class="Sy">descriptor</b></a> - (<a class="permalink" href="#NV_TYPE_DESCRIPTOR"><b class="Sy" id="NV_TYPE_DESCRIPTOR">NV_TYPE_DESCRIPTOR</b></a>)</dt> - <dd>The value is a file descriptor. Note that file descriptors can be sent - only over <a class="Xr">unix(4)</a> domain sockets.</dd> - <dt id="binary"><a class="permalink" href="#binary"><b class="Sy">binary</b></a> - (<a class="permalink" href="#NV_TYPE_BINARY"><b class="Sy" id="NV_TYPE_BINARY">NV_TYPE_BINARY</b></a>)</dt> - <dd>The value is a binary buffer.</dd> - <dt id="NV_TYPE_BOOL_ARRAY"><b class="Sy">bool array</b> - (<a class="permalink" href="#NV_TYPE_BOOL_ARRAY"><b class="Sy">NV_TYPE_BOOL_ARRAY</b></a>)</dt> - <dd>The value is an array of boolean values.</dd> - <dt id="NV_TYPE_NUMBER_ARRAY"><b class="Sy">number array</b> - (<a class="permalink" href="#NV_TYPE_NUMBER_ARRAY"><b class="Sy">NV_TYPE_NUMBER_ARRAY</b></a>)</dt> - <dd>The value is an array of numbers, each stored as - <var class="Vt">uint64_t</var>.</dd> - <dt id="NV_TYPE_STRING_ARRAY"><b class="Sy">string array</b> - (<a class="permalink" href="#NV_TYPE_STRING_ARRAY"><b class="Sy">NV_TYPE_STRING_ARRAY</b></a>)</dt> - <dd>The value is an array of C strings.</dd> - <dt id="NV_TYPE_NVLIST_ARRAY"><b class="Sy">nvlist array</b> - (<a class="permalink" href="#NV_TYPE_NVLIST_ARRAY"><b class="Sy">NV_TYPE_NVLIST_ARRAY</b></a>)</dt> - <dd>The value is an array of nvlists. When an nvlist is added to an array, it - becomes part of the primary nvlist. Traversing these arrays can be done - using the - <a class="permalink" href="#nvlist_get_array_next"><code class="Fn" id="nvlist_get_array_next">nvlist_get_array_next</code></a>() - and <code class="Fn">nvlist_get_pararr</code>() functions.</dd> - <dt id="NV_TYPE_DESCRIPTOR_ARRAY"><b class="Sy">descriptor array</b> - (<a class="permalink" href="#NV_TYPE_DESCRIPTOR_ARRAY"><b class="Sy">NV_TYPE_DESCRIPTOR_ARRAY</b></a>)</dt> - <dd>The value is an array of files descriptors.</dd> -</dl> -<p class="Pp" id="nvlist_create">The - <a class="permalink" href="#nvlist_create"><code class="Fn">nvlist_create</code></a>() - function allocates memory and initializes an nvlist.</p> -<p class="Pp">The following flags can be provided:</p> -<p class="Pp"></p> -<div class="Bd-indent"> -<dl class="Bl-tag Bl-compact"> - <dt id="NV_FLAG_IGNORE_CASE"><a class="permalink" href="#NV_FLAG_IGNORE_CASE"><code class="Dv">NV_FLAG_IGNORE_CASE</code></a></dt> - <dd>Perform case-insensitive lookups of provided names.</dd> - <dt id="NV_FLAG_NO_UNIQUE"><a class="permalink" href="#NV_FLAG_NO_UNIQUE"><code class="Dv">NV_FLAG_NO_UNIQUE</code></a></dt> - <dd>Names in the nvlist do not have to be unique.</dd> -</dl> -</div> -<p class="Pp" id="nvlist_destroy">The - <a class="permalink" href="#nvlist_destroy"><code class="Fn">nvlist_destroy</code></a>() - function destroys the given nvlist. This function does nothing if - <var class="Fa">nvl</var> is <code class="Dv">NULL</code>. This function - never modifies <var class="Va">errno</var>.</p> -<p class="Pp" id="nvlist_error">The - <a class="permalink" href="#nvlist_error"><code class="Fn">nvlist_error</code></a>() - function returns the first error set on <var class="Fa">nvl</var>. If - <var class="Fa">nvl</var> is not in the error state, this function returns - zero. If <var class="Fa">nvl</var> is <code class="Dv">NULL</code>, - <code class="Er">ENOMEM</code> is returned.</p> -<p class="Pp" id="nvlist_set_error">The - <a class="permalink" href="#nvlist_set_error"><code class="Fn">nvlist_set_error</code></a>() - function sets an the error value for <var class="Fa">nvl</var>. Subsequent - calls to <code class="Fn">nvlist_error</code>() will return - <var class="Fa">error</var>. This function cannot be used to clear the error - state from an nvlist. This function does nothing if the nvlist is already in - the error state.</p> -<p class="Pp" id="nvlist_empty">The - <a class="permalink" href="#nvlist_empty"><code class="Fn">nvlist_empty</code></a>() - function returns <code class="Dv">true</code> if <var class="Fa">nvl</var> - is empty and <code class="Dv">false</code> otherwise. The nvlist must not be - in the error state.</p> -<p class="Pp" id="nvlist_flags">The - <a class="permalink" href="#nvlist_flags"><code class="Fn">nvlist_flags</code></a>() - function returns the flags used to create <var class="Fa">nvl</var> with the - <code class="Fn">nvlist_create</code>(), - <code class="Fn">nvlist_recv</code>(), - <code class="Fn">nvlist_unpack</code>(), or - <code class="Fn">nvlist_xfer</code>() functions.</p> -<p class="Pp" id="nvlist_in_array">The - <a class="permalink" href="#nvlist_in_array"><code class="Fn">nvlist_in_array</code></a>() - function returns <code class="Dv">true</code> if <var class="Fa">nvl</var> - is part of an array that is a member of another nvlist.</p> -<p class="Pp" id="nvlist_clone">The - <a class="permalink" href="#nvlist_clone"><code class="Fn">nvlist_clone</code></a>() - function clones <var class="Fa">nvl</var>. The clone shares no resources - with its origin. This also means that all file descriptors that are part of - the nvlist will be duplicated with the <a class="Xr">dup(2)</a> system call - before placing them in the clone.</p> -<p class="Pp" id="nvlist_dump">The - <a class="permalink" href="#nvlist_dump"><code class="Fn">nvlist_dump</code></a>() - function dumps nvlist content for debugging purposes to the file descriptor - <var class="Fa">fd</var>.</p> -<p class="Pp" id="nvlist_fdump">The - <a class="permalink" href="#nvlist_fdump"><code class="Fn">nvlist_fdump</code></a>() - dumps nvlist content for debugging purposes to the file stream - <var class="Fa">fp</var>.</p> -<p class="Pp" id="nvlist_size">The - <a class="permalink" href="#nvlist_size"><code class="Fn">nvlist_size</code></a>() - function returns the size of the binary buffer that would be generated by - the <code class="Fn">nvlist_pack</code>() function.</p> -<p class="Pp" id="nvlist_pack">The - <a class="permalink" href="#nvlist_pack"><code class="Fn">nvlist_pack</code></a>() - function converts the given nvlist to a binary buffer. The function - allocates memory for the buffer which should be freed with the - <a class="Xr">free(3)</a> function. If the <var class="Fa">sizep</var> - argument is not <code class="Dv">NULL</code>, the size of the buffer is - stored there. This function returns <code class="Dv">NULL</code> in case of - an error (allocation failure). If the nvlist contains any file descriptors - <code class="Dv">NULL</code> will be returned. The nvlist must not be in the - error state.</p> -<p class="Pp" id="nvlist_unpack">The - <a class="permalink" href="#nvlist_unpack"><code class="Fn">nvlist_unpack</code></a>() - function converts a binary buffer to a new nvlist. The - <var class="Fa">flags</var> argument has the same meaning as the - <var class="Fa">flags</var> argument passed to - <code class="Fn">nvlist_create</code>(). If <var class="Fa">flags</var> do - not match the flags used to create the initial nvlist before it was packed, - this function will fail. The flags of nested nvlists are not validated by - this function. The caller is responsible for validating the flags on any - nested nvlists using <code class="Fn">nvlist_flags</code>(). This function - returns the new nvlist on success or <code class="Dv">NULL</code> in case of - an error.</p> -<p class="Pp" id="nvlist_send">The - <a class="permalink" href="#nvlist_send"><code class="Fn">nvlist_send</code></a>() - function sends <var class="Fa">nvl</var> over the socket - <var class="Fa">sock</var>. Note that nvlists that contain file descriptors - can only be sent over <a class="Xr">unix(4)</a> domain sockets.</p> -<p class="Pp" id="nvlist_recv">The - <a class="permalink" href="#nvlist_recv"><code class="Fn">nvlist_recv</code></a>() - function receives an nvlist over the socket <var class="Fa">sock</var>. As - with <code class="Fn">nvlist_unpack</code>(), the - <var class="Fa">flags</var> argument is used to construct the new nvlist and - must match the flags used to construct the original nvlist written to - <var class="Fa">sock</var> by the peer. The flags of nested nvlists are not - validated by this function. The caller is responsible for validating the - flags on any nested nvlists using <code class="Fn">nvlist_flags</code>(). - This function returns the new nvlist on success or - <code class="Dv">NULL</code> in case of an error.</p> -<p class="Pp" id="nvlist_xfer">The - <a class="permalink" href="#nvlist_xfer"><code class="Fn">nvlist_xfer</code></a>() - function sends <var class="Fa">nvl</var> over the socket - <var class="Fa">sock</var> argument and then receives a new nvlist over the - same socket. The <var class="Fa">flags</var> argument applies to the new - nvlist similar to <code class="Fn">nvlist_recv</code>(). The nvlist - <var class="Fa">nvl</var> is always destroyed. This function returns the new - nvlist on success or <code class="Dv">NULL</code> in case of an error.</p> -<p class="Pp" id="nvlist_next">The - <a class="permalink" href="#nvlist_next"><code class="Fn">nvlist_next</code></a>() - function iterates over <var class="Fa">nvl</var> returning the names and - types of subsequent elements. The <var class="Fa">cookiep</var> argument - determines which element is returned. If <var class="Va">*cookiep</var> is - <code class="Dv">NULL</code>, the values for the first element in the list - are returned. Otherwise, <var class="Va">*cookiep</var> should contain the - result of a prior call to <code class="Fn">nvlist_next</code>() in which - case values for the next element from <var class="Fa">nvl</var> are - returned. This function returns <code class="Dv">NULL</code> when there are - no more elements on <var class="Fa">nvl</var>. The - <var class="Fa">typep</var> argument can be <code class="Dv">NULL</code>. - Elements may not be removed from <var class="Fa">nvl</var> the nvlist while - traversing it. <var class="Fa">nvl</var> must not be in the error state. - Additional actions can be performed on an element identified by a cookie via - the <a class="Xr">cnv(9)</a> API .</p> -<p class="Pp" id="nvlist_exists">The - <a class="permalink" href="#nvlist_exists"><code class="Fn">nvlist_exists</code></a>() - function returns <code class="Dv">true</code> if an element named - <var class="Fa">name</var> exists in <var class="Fa">nvl</var> (regardless - of type) or <code class="Dv">false</code> otherwise. The nvlist must not be - in the error state.</p> -<p class="Pp" id="nvlist_exists_type">The - <a class="permalink" href="#nvlist_exists_type"><code class="Fn">nvlist_exists_type</code></a>() - function returns <code class="Dv">true</code> if an element named - <var class="Fa">name</var> of type <var class="Fa">type</var> exists or - <code class="Dv">false</code> otherwise. The nvlist must not be in the error - state.</p> -<p class="Pp" id="nvlist_exists_null">The - <a class="permalink" href="#nvlist_exists_null"><code class="Fn">nvlist_exists_null</code></a>(), - <a class="permalink" href="#nvlist_exists_bool"><code class="Fn" id="nvlist_exists_bool">nvlist_exists_bool</code></a>(), - <a class="permalink" href="#nvlist_exists_number"><code class="Fn" id="nvlist_exists_number">nvlist_exists_number</code></a>(), - <a class="permalink" href="#nvlist_exists_string"><code class="Fn" id="nvlist_exists_string">nvlist_exists_string</code></a>(), - <a class="permalink" href="#nvlist_exists_nvlist"><code class="Fn" id="nvlist_exists_nvlist">nvlist_exists_nvlist</code></a>(), - <a class="permalink" href="#nvlist_exists_descriptor"><code class="Fn" id="nvlist_exists_descriptor">nvlist_exists_descriptor</code></a>(), - <a class="permalink" href="#nvlist_exists_binary"><code class="Fn" id="nvlist_exists_binary">nvlist_exists_binary</code></a>(), - <a class="permalink" href="#nvlist_exists_bool_array"><code class="Fn" id="nvlist_exists_bool_array">nvlist_exists_bool_array</code></a>(), - <a class="permalink" href="#nvlist_exists_number_array"><code class="Fn" id="nvlist_exists_number_array">nvlist_exists_number_array</code></a>(), - <a class="permalink" href="#nvlist_exists_string_array"><code class="Fn" id="nvlist_exists_string_array">nvlist_exists_string_array</code></a>(), - <a class="permalink" href="#nvlist_exists_nvlist_array"><code class="Fn" id="nvlist_exists_nvlist_array">nvlist_exists_nvlist_array</code></a>(), - <a class="permalink" href="#nvlist_exists_descriptor_array"><code class="Fn" id="nvlist_exists_descriptor_array">nvlist_exists_descriptor_array</code></a>() - functions return <code class="Dv">true</code> if element named - <var class="Fa">name</var> with the type determined by the function name - exists or <code class="Dv">false</code> otherwise. The nvlist must not be in - the error state.</p> -<p class="Pp" id="nvlist_add_null">The - <a class="permalink" href="#nvlist_add_null"><code class="Fn">nvlist_add_null</code></a>(), - <a class="permalink" href="#nvlist_add_bool"><code class="Fn" id="nvlist_add_bool">nvlist_add_bool</code></a>(), - <a class="permalink" href="#nvlist_add_number"><code class="Fn" id="nvlist_add_number">nvlist_add_number</code></a>(), - <a class="permalink" href="#nvlist_add_string"><code class="Fn" id="nvlist_add_string">nvlist_add_string</code></a>(), - <a class="permalink" href="#nvlist_add_stringf"><code class="Fn" id="nvlist_add_stringf">nvlist_add_stringf</code></a>(), - <a class="permalink" href="#nvlist_add_stringv"><code class="Fn" id="nvlist_add_stringv">nvlist_add_stringv</code></a>(), - <a class="permalink" href="#nvlist_add_nvlist"><code class="Fn" id="nvlist_add_nvlist">nvlist_add_nvlist</code></a>(), - <a class="permalink" href="#nvlist_add_descriptor"><code class="Fn" id="nvlist_add_descriptor">nvlist_add_descriptor</code></a>(), - <a class="permalink" href="#nvlist_add_binary"><code class="Fn" id="nvlist_add_binary">nvlist_add_binary</code></a>(), - <a class="permalink" href="#nvlist_add_bool_array"><code class="Fn" id="nvlist_add_bool_array">nvlist_add_bool_array</code></a>(), - <a class="permalink" href="#nvlist_add_number_array"><code class="Fn" id="nvlist_add_number_array">nvlist_add_number_array</code></a>(), - <a class="permalink" href="#nvlist_add_string_array"><code class="Fn" id="nvlist_add_string_array">nvlist_add_string_array</code></a>(), - <code class="Fn">nvlist_add_nvlist_array</code>(), - <a class="permalink" href="#nvlist_add_descriptor_array"><code class="Fn" id="nvlist_add_descriptor_array">nvlist_add_descriptor_array</code></a>() - functions add an element to <var class="Fa">nvl</var>. When adding a string - or binary buffer, these functions allocate memory and copy the data. When - adding an nvlist, the <var class="Fa">value</var> nvlist is cloned and the - clone is added to <var class="Fa">nvl</var>. When adding a file descriptor, - the descriptor is duplicated via the <a class="Xr">dup(2)</a> system call - and the new file descriptor is added. The array functions fail if there are - any <code class="Dv">NULL</code> elements in the array, or if the array - pointer is <code class="Dv">NULL</code>. If an error occurs while adding a - new element, an internal error is set which can be examined using the - <code class="Fn">nvlist_error</code>() function.</p> -<p class="Pp" id="nvlist_move_string">The - <a class="permalink" href="#nvlist_move_string"><code class="Fn">nvlist_move_string</code></a>(), - <a class="permalink" href="#nvlist_move_nvlist"><code class="Fn" id="nvlist_move_nvlist">nvlist_move_nvlist</code></a>(), - <a class="permalink" href="#nvlist_move_descriptor"><code class="Fn" id="nvlist_move_descriptor">nvlist_move_descriptor</code></a>(), - <a class="permalink" href="#nvlist_move_binary"><code class="Fn" id="nvlist_move_binary">nvlist_move_binary</code></a>(), - <a class="permalink" href="#nvlist_move_bool_array"><code class="Fn" id="nvlist_move_bool_array">nvlist_move_bool_array</code></a>(), - <a class="permalink" href="#nvlist_move_number_array"><code class="Fn" id="nvlist_move_number_array">nvlist_move_number_array</code></a>(), - <a class="permalink" href="#nvlist_move_string_array"><code class="Fn" id="nvlist_move_string_array">nvlist_move_string_array</code></a>(), - <code class="Fn">nvlist_move_nvlist_array</code>(), - <a class="permalink" href="#nvlist_move_descriptor_array"><code class="Fn" id="nvlist_move_descriptor_array">nvlist_move_descriptor_array</code></a>() - functions add an element to <var class="Fa">nvl</var>, but unlike the - <a class="permalink" href="#nvlist_add__type_"><code class="Fn" id="nvlist_add__type_">nvlist_add_<type></code></a>() - functions they consume the given resource. For string, file descriptor, - binary buffer, or nvlist values, no value should be moved into an nvlist - multiple times; doing so will cause that value to be freed multiple times. - Note that strings or binary buffers must be allocated with - <a class="Xr">malloc(3)</a>, and the pointers will be released via - <a class="Xr">free(3)</a> when <var class="Fa">nvl</var> is destroyed. The - array functions fail if there are any <code class="Dv">NULL</code> elements, - or if the array pointer is <code class="Dv">NULL</code>. If an error occurs - while adding new element, the resource is destroyed and an internal error is - set which can be examined using the <code class="Fn">nvlist_error</code>() - function.</p> -<p class="Pp" id="nvlist_get_bool">The - <a class="permalink" href="#nvlist_get_bool"><code class="Fn">nvlist_get_bool</code></a>(), - <a class="permalink" href="#nvlist_get_number"><code class="Fn" id="nvlist_get_number">nvlist_get_number</code></a>(), - <a class="permalink" href="#nvlist_get_string"><code class="Fn" id="nvlist_get_string">nvlist_get_string</code></a>(), - <a class="permalink" href="#nvlist_get_nvlist"><code class="Fn" id="nvlist_get_nvlist">nvlist_get_nvlist</code></a>(), - <a class="permalink" href="#nvlist_get_descriptor"><code class="Fn" id="nvlist_get_descriptor">nvlist_get_descriptor</code></a>(), - <a class="permalink" href="#nvlist_get_binary"><code class="Fn" id="nvlist_get_binary">nvlist_get_binary</code></a>(), - <a class="permalink" href="#nvlist_get_bool_array"><code class="Fn" id="nvlist_get_bool_array">nvlist_get_bool_array</code></a>(), - <a class="permalink" href="#nvlist_get_number_array"><code class="Fn" id="nvlist_get_number_array">nvlist_get_number_array</code></a>(), - <a class="permalink" href="#nvlist_get_string_array"><code class="Fn" id="nvlist_get_string_array">nvlist_get_string_array</code></a>(), - <a class="permalink" href="#nvlist_get_nvlist_array"><code class="Fn" id="nvlist_get_nvlist_array">nvlist_get_nvlist_array</code></a>(), - <a class="permalink" href="#nvlist_get_descriptor_array"><code class="Fn" id="nvlist_get_descriptor_array">nvlist_get_descriptor_array</code></a>() - functions return the value of the first element in <var class="Fa">nvl</var> - named <var class="Fa">name</var>. For string, nvlist, file descriptor, - binary buffer, or array values, the returned resource must not be modified - - it still belongs to <var class="Fa">nvl</var>.</p> -<p class="Pp">If an element named <var class="Fa">name</var> does not exist, the - program aborts. To avoid this, the caller should check for the existence of - the element before trying to obtain the value or use the - <a class="Xr">dnv(9)</a> extension which provides a default value in the - case of a missing element.</p> -<p class="Pp">The nvlist must not be in the error state.</p> -<p class="Pp" id="nvlist_get_parent">The - <a class="permalink" href="#nvlist_get_parent"><code class="Fn">nvlist_get_parent</code></a>() - function returns the parent nvlist of <var class="Fa">nvl</var>.</p> -<p class="Pp" id="nvlist_get_array_next~2">The - <a class="permalink" href="#nvlist_get_array_next~2"><code class="Fn">nvlist_get_array_next</code></a>() - function returns the next element after <var class="Fa">nvl</var> from an - array of nvlists. If <var class="Fa">nvl</var> is not in an array of nvlists - or it is the last element, this function returns - <code class="Dv">NULL</code>. An nvlist is only in an nvlist array if it was - added to an nvlist array using - <a class="permalink" href="#nvlist_add_nvlist_array"><code class="Fn" id="nvlist_add_nvlist_array">nvlist_add_nvlist_array</code></a>(), - <a class="permalink" href="#nvlist_append_nvlist_array"><code class="Fn" id="nvlist_append_nvlist_array">nvlist_append_nvlist_array</code></a>(), - or - <a class="permalink" href="#nvlist_move_nvlist_array"><code class="Fn" id="nvlist_move_nvlist_array">nvlist_move_nvlist_array</code></a>().</p> -<p class="Pp" id="nvlist_get_pararr">The - <a class="permalink" href="#nvlist_get_pararr"><code class="Fn">nvlist_get_pararr</code></a>() - function returns the next element after - <a class="permalink" href="#nvl"><code class="Fn" id="nvl">nvl</code></a>() - from an array of nvlists. If <code class="Fn">nvl</code>() is the last - element in an array of nvlists, the parent nvlist of <var class="Fa">nvl - is</var> returned. If <code class="Fn">nvl</code>() is not in an array of - nvlists, <code class="Dv">NULL</code> is returned.</p> -<p class="Pp" id="nvlist_take_bool">The - <a class="permalink" href="#nvlist_take_bool"><code class="Fn">nvlist_take_bool</code></a>(), - <a class="permalink" href="#nvlist_take_number"><code class="Fn" id="nvlist_take_number">nvlist_take_number</code></a>(), - <a class="permalink" href="#nvlist_take_string"><code class="Fn" id="nvlist_take_string">nvlist_take_string</code></a>(), - <a class="permalink" href="#nvlist_take_nvlist"><code class="Fn" id="nvlist_take_nvlist">nvlist_take_nvlist</code></a>(), - <a class="permalink" href="#nvlist_take_descriptor"><code class="Fn" id="nvlist_take_descriptor">nvlist_take_descriptor</code></a>(), - <a class="permalink" href="#nvlist_take_binary"><code class="Fn" id="nvlist_take_binary">nvlist_take_binary</code></a>(), - <a class="permalink" href="#nvlist_take_bool_array"><code class="Fn" id="nvlist_take_bool_array">nvlist_take_bool_array</code></a>(), - <a class="permalink" href="#nvlist_take_number_array"><code class="Fn" id="nvlist_take_number_array">nvlist_take_number_array</code></a>(), - <a class="permalink" href="#nvlist_take_string_array"><code class="Fn" id="nvlist_take_string_array">nvlist_take_string_array</code></a>(), - <a class="permalink" href="#nvlist_take_nvlist_array"><code class="Fn" id="nvlist_take_nvlist_array">nvlist_take_nvlist_array</code></a>(), - <a class="permalink" href="#nvlist_take_descriptor_array"><code class="Fn" id="nvlist_take_descriptor_array">nvlist_take_descriptor_array</code></a>() - functions return the value of the element named <var class="Fa">name</var> - and remove the element from <var class="Fa">nvl</var>. For string and binary - buffer values, the caller is responsible for freeing the returned value - using the <a class="Xr">free(3)</a> function. For nvlist values, the caller - is responsible for destroying the returned nvlist using the - <code class="Fn">nvlist_destroy</code>() function. For file descriptor - values, the caller is responsible for closing the returned descriptor using - the - <a class="permalink" href="#close"><code class="Fn" id="close">close</code></a>(<var class="Fa">2</var>) - system call. For array values, the caller is responsible for destroying - every element of the array based on the element type. In addition, the - caller must also free the pointer to the array using the - <a class="Xr">free(3)</a> function.</p> -<p class="Pp">If an element named <var class="Fa">name</var> does not exist, the - program aborts. To avoid this, the caller should check for the existence of - the element before trying to obtain the value or use the - <a class="Xr">dnv(9)</a> extension which provides a default value in the - case of a missing element.</p> -<p class="Pp">The nvlist must not be in the error state.</p> -<p class="Pp" id="nvlist_append_bool_array">The - <a class="permalink" href="#nvlist_append_bool_array"><code class="Fn">nvlist_append_bool_array</code></a>(), - <a class="permalink" href="#nvlist_append_number_array"><code class="Fn" id="nvlist_append_number_array">nvlist_append_number_array</code></a>(), - <a class="permalink" href="#nvlist_append_string_array"><code class="Fn" id="nvlist_append_string_array">nvlist_append_string_array</code></a>(), - <code class="Fn">nvlist_append_nvlist_array</code>(), - <a class="permalink" href="#nvlist_append_descriptor_array"><code class="Fn" id="nvlist_append_descriptor_array">nvlist_append_descriptor_array</code></a>() - functions append an element to an existing array using the same semantics as - the add functions (that is, the element will be copied when applicable). If - the array named <var class="Fa">name</var> does not exist, then it will be - created as if using the - <a class="permalink" href="#nvlist_add__type__array"><code class="Fn" id="nvlist_add__type__array">nvlist_add_<type>_array</code></a>() - function. If an error occurs while appending a new element, an internal - error is set on <var class="Fa">nvl</var>.</p> -<p class="Pp" id="nvlist_free">The - <a class="permalink" href="#nvlist_free"><code class="Fn">nvlist_free</code></a>() - function removes the first element named <var class="Fa">name</var> from - <var class="Fa">nvl</var> (regardless of type) and frees all resources - associated with it. If no element named <var class="Fa">name</var> exists, - the program aborts. The nvlist must not be in the error state.</p> -<p class="Pp" id="nvlist_free_type">The - <a class="permalink" href="#nvlist_free_type"><code class="Fn">nvlist_free_type</code></a>() - function removes the first element named <var class="Fa">name</var> of type - <var class="Fa">type</var> from <var class="Fa">nvl</var> and frees all - resources associated with it. If no element named <var class="Fa">name</var> - of type <var class="Fa">type</var> exists, the program aborts. The nvlist - must not be in the error state.</p> -<p class="Pp" id="nvlist_free_null">The - <a class="permalink" href="#nvlist_free_null"><code class="Fn">nvlist_free_null</code></a>(), - <a class="permalink" href="#nvlist_free_bool"><code class="Fn" id="nvlist_free_bool">nvlist_free_bool</code></a>(), - <a class="permalink" href="#nvlist_free_number"><code class="Fn" id="nvlist_free_number">nvlist_free_number</code></a>(), - <a class="permalink" href="#nvlist_free_string"><code class="Fn" id="nvlist_free_string">nvlist_free_string</code></a>(), - <a class="permalink" href="#nvlist_free_nvlist"><code class="Fn" id="nvlist_free_nvlist">nvlist_free_nvlist</code></a>(), - <a class="permalink" href="#nvlist_free_descriptor"><code class="Fn" id="nvlist_free_descriptor">nvlist_free_descriptor</code></a>(), - <a class="permalink" href="#nvlist_free_binary"><code class="Fn" id="nvlist_free_binary">nvlist_free_binary</code></a>(), - <a class="permalink" href="#nvlist_free_bool_array"><code class="Fn" id="nvlist_free_bool_array">nvlist_free_bool_array</code></a>(), - <a class="permalink" href="#nvlist_free_number_array"><code class="Fn" id="nvlist_free_number_array">nvlist_free_number_array</code></a>(), - <a class="permalink" href="#nvlist_free_string_array"><code class="Fn" id="nvlist_free_string_array">nvlist_free_string_array</code></a>(), - <a class="permalink" href="#nvlist_free_nvlist_array"><code class="Fn" id="nvlist_free_nvlist_array">nvlist_free_nvlist_array</code></a>(), - <a class="permalink" href="#nvlist_free_descriptor_array"><code class="Fn" id="nvlist_free_descriptor_array">nvlist_free_descriptor_array</code></a>() - functions remove the first element named <var class="Fa">name</var> with the - type determined by the function name from <var class="Fa">nvl</var> free all - resources associated with it. If no element named <var class="Fa">name</var> - with the appropriate type exists, the program aborts. The nvlist must not be - in the error state.</p> -<section class="Ss"> -<h2 class="Ss" id="Notes"><a class="permalink" href="#Notes">Notes</a></h2> -<p class="Pp">The <code class="Fn">nvlist_pack</code>() and - <code class="Fn">nvlist_unpack</code>() functions handle byte-order - conversions, so binary buffers can be packed and unpacked on hosts with - different endianness.</p> -<p class="Pp" id="nvlist_recv~2">The - <a class="permalink" href="#nvlist_recv~2"><code class="Fn">nvlist_recv</code></a>(), - <code class="Fn">nvlist_send</code>(), and - <code class="Fn">nvlist_xfer</code>() functions can transfer nvlists between - hosts with different endianness.</p> -</section> -<section class="Ss"> -<h2 class="Ss" id="Kernel_Considerations"><a class="permalink" href="#Kernel_Considerations">Kernel - Considerations</a></h2> -<p class="Pp">The <code class="Nm">nv</code>, <code class="Nm">cnv</code>, and - <code class="Nm">dnv</code> APIs can be used in the kernel with the - following differences:</p> -<ul class="Bl-bullet"> - <li>File descriptor and file descriptor array value types are not - supported.</li> - <li><code class="Fn">nvlist_recv</code>(), - <code class="Fn">nvlist_send</code>(), and - <code class="Fn">nvlist_xfer</code>() are not supported.</li> - <li>All memory allocations use the <code class="Dv">M_NVLIST</code> memory - type with <a class="Xr">malloc(9)</a> and <a class="Xr">free(9)</a>. As a - result, any allocated buffers moved into an nvlist must be allocated with - <code class="Dv">M_NVLIST</code>, and buffers returned by functions such - as <code class="Fn">nvlist_pack</code>() must be freed with - <code class="Dv">M_NVLIST</code>.</li> -</ul> -</section> -</section> -<section class="Sh"> -<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1> -<p class="Pp">The following example demonstrates how to prepare an nvlist and - send it over a <a class="Xr">unix(4)</a> domain socket.</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl; -int fd; - -fd = open("/tmp/foo", O_RDONLY); -if (fd < 0) - err(1, "open(\"/tmp/foo\") failed"); - -nvl = nvlist_create(0); - -/* - * There is no need to check if nvlist_create() succeeded - * as the nvlist_add_<type>() functions can cope. - * If it failed, nvlist_send() will fail. - */ -nvlist_add_string(nvl, "filename", "/tmp/foo"); -nvlist_add_number(nvl, "flags", O_RDONLY); - -/* - * We just want to send the descriptor, so we can give it - * for the nvlist to consume (that is why we use nvlist_move - * not nvlist_add). - */ -nvlist_move_descriptor(nvl, "fd", fd); -if (nvlist_send(sock, nvl) < 0) { - nvlist_destroy(nvl); - err(1, "nvlist_send() failed"); -} -nvlist_destroy(nvl);</pre> -</div> -<p class="Pp">Receiving an nvlist and retrieving element values:</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl; -const char *command; -char *filename; -int fd; - -nvl = nvlist_recv(sock, 0); -if (nvl == NULL) - err(1, "nvlist_recv() failed"); - -/* For command we accept a pointer to the nvlist's internal buffer. */ -command = nvlist_get_string(nvl, "command"); - -/* - * For filename we remove it from the nvlist and take - * ownership of the buffer. - */ -filename = nvlist_take_string(nvl, "filename"); - -/* The same for the file descriptor. */ -fd = nvlist_take_descriptor(nvl, "fd"); - -printf("command=%s filename=%s fd=%d0, command, filename, fd); - -/* command is freed by nvlist_destroy() */ -nvlist_destroy(nvl); -free(filename); -close(fd);</pre> -</div> -<p class="Pp">Iterating over an nvlist:</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl; -const char *name; -void *cookie; -int type; - -nvl = nvlist_recv(sock, 0); -if (nvl == NULL) - err(1, "nvlist_recv() failed"); - -cookie = NULL; -while ((name = nvlist_next(nvl, &type, &cookie)) != NULL) { - printf("%s=", name); - switch (type) { - case NV_TYPE_NUMBER: - printf("%ju", (uintmax_t)nvlist_get_number(nvl, name)); - break; - case NV_TYPE_STRING: - printf("%s", nvlist_get_string(nvl, name)); - break; - default: - printf("N/A"); - break; - } - printf("\n"); -}</pre> -</div> -<p class="Pp">Iterating over every nested nvlist:</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl; -const char *name; -void *cookie; -int type; - -nvl = nvlist_recv(sock, 0); -if (nvl == NULL) - err(1, "nvlist_recv() failed"); - -cookie = NULL; -do { - while ((name = nvlist_next(nvl, &type, &cookie)) != NULL) { - if (type == NV_TYPE_NVLIST) { - nvl = nvlist_get_nvlist(nvl, name); - cookie = NULL; - } - } -} while ((nvl = nvlist_get_parent(nvl, &cookie)) != NULL);</pre> -</div> -<p class="Pp">Iterating over every nested nvlist and every nvlist element:</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl; -const nvlist_t * const *array; -const char *name; -void *cookie; -int type; - -nvl = nvlist_recv(sock, 0); -if (nvl == null) - err(1, "nvlist_recv() failed"); - -cookie = NULL; -do { - while ((name = nvlist_next(nvl, &type, &cookie)) != NULL) { - if (type == NV_TYPE_NVLIST) { - nvl = nvlist_get_nvlist(nvl, name); - cookie = NULL; - } else if (type == NV_TYPE_NVLIST_ARRAY) { - nvl = nvlist_get_nvlist_array(nvl, name, NULL)[0]; - cookie = NULL; - } - } -} while ((nvl = nvlist_get_pararr(nvl, &cookie)) != NULL);</pre> -</div> -<p class="Pp">Or alternatively:</p> -<div class="Bd Pp Li"> -<pre>nvlist_t *nvl, *tmp; -const nvlist_t * const *array; -const char *name; -void *cookie; -int type; - -nvl = nvlist_recv(sock, 0); -if (nvl == null) - err(1, "nvlist_recv() failed"); - -cooke = NULL; -tmp = nvl; -do { - do { - nvl = tmp; - while ((name = nvlist_next(nvl, &type, &cookie)) != NULL) { - if (type == NV_TYPE_NVLIST) { - nvl = nvlist_get_nvlist(nvl, name); - cookie = NULL; - } else if (type == NV_TYPE_NVLIST_ARRAY) { - nvl = nvlist_get_nvlist_array(nvl, name, - NULL)[0]; - cookie = NULL; - } - } - cookie = NULL; - } while ((tmp = nvlist_get_array_next(nvl)) != NULL); -} while ((tmp = nvlist_get_parent(nvl, &cookie)) != NULL);</pre> -</div> -</section> -<section class="Sh"> -<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE - ALSO</a></h1> -<p class="Pp"><a class="Xr">close(2)</a>, <a class="Xr">dup(2)</a>, - <a class="Xr">open(2)</a>, <a class="Xr">err(3)</a>, - <a class="Xr">free(3)</a>, <a class="Xr">printf(3)</a>, - <a class="Xr">unix(4)</a></p> -</section> -<section class="Sh"> -<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1> -<p class="Pp">The <code class="Nm">libnv</code> library appeared in - <span class="Ux">FreeBSD 11.0</span>.</p> -</section> -<section class="Sh"> -<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1> -<p class="Pp">The <code class="Nm">libnv</code> library was implemented by - <span class="An">Pawel Jakub Dawidek</span> - <<a class="Mt" href="mailto:pawel@dawidek.net">pawel@dawidek.net</a>> - under sponsorship from the FreeBSD Foundation.</p> -</section> -</div> -<table class="foot"> - <tr> - <td class="foot-date">January 3, 2025</td> - <td class="foot-os">FreeBSD 15.0</td> - </tr> -</table> |