[Libguestfs] [PATCH nbdkit v4 4/7] python: Implement can_zero, can_fast_zero.

[Richard W.M. Jones]

---
 plugins/python/nbdkit-python-plugin.pod | 16 ++++++++++++++--
 plugins/python/python.c                 | 14 ++++++++++++++
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/plugins/python/nbdkit-python-plugin.pod b/plugins/python/nbdkit-python-plugin.pod
index ebea0a7..0def7bb 100644
--- a/plugins/python/nbdkit-python-plugin.pod
+++ b/plugins/python/nbdkit-python-plugin.pod
@@ -208,6 +208,20 @@ contents will be garbage collected.
  def can_trim(h):
    # return a boolean
 
+=item C<can_zero>
+
+(Optional)
+
+ def can_zero(h):
+   # return a boolean
+
+=item C<can_fast_zero>
+
+(Optional)
+
+ def can_fast_zero(h):
+   # return a boolean
+
 =item C<pread>
 
 (Required)
@@ -330,8 +344,6 @@ C<config_help>,
 C<magic_config_key>,
 C<can_fua>,
 C<can_cache>,
-C<can_zero>,
-C<can_fast_zero>,
 C<can_extents>,
 C<can_multi_conn>,
 C<extents>.
diff --git a/plugins/python/python.c b/plugins/python/python.c
index 5b0d0f5..01bd285 100644
--- a/plugins/python/python.c
+++ b/plugins/python/python.c
@@ -790,6 +790,18 @@ py_can_trim (void *handle)
   return boolean_callback (handle, "can_trim", "trim");
 }
 
+static int
+py_can_zero (void *handle)
+{
+  return boolean_callback (handle, "can_zero", "zero");
+}
+
+static int
+py_can_fast_zero (void *handle)
+{
+  return boolean_callback (handle, "can_fast_zero", NULL);
+}
+
 #define py_config_help \
   "script=<FILENAME>     (required) The Python plugin to run.\n" \
   "[other arguments may be used by the plugin that you load]"
@@ -816,6 +828,8 @@ static struct nbdkit_plugin plugin = {
   .can_write         = py_can_write,
   .can_flush         = py_can_flush,
   .can_trim          = py_can_trim,
+  .can_zero          = py_can_zero,
+  .can_fast_zero     = py_can_fast_zero,
 
   .pread             = py_pread,
   .pwrite            = py_pwrite,
-- 
2.23.0