[Libguestfs] [PATCH nbdkit 7/8] python: Implement can_zero, can_fast_zero.

Richard W.M. Jones rjones at redhat.com
Thu Nov 21 16:58:13 UTC 2019


---
 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 2bc4722..96a83ef 100644
--- a/plugins/python/nbdkit-python-plugin.pod
+++ b/plugins/python/nbdkit-python-plugin.pod
@@ -212,6 +212,20 @@ 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<can_cache>
 
 (Optional)
@@ -336,8 +350,6 @@ C<description>,
 C<config_help>,
 C<magic_config_key>,
 C<can_fua>,
-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 33fb6e4..468b1ec 100644
--- a/plugins/python/python.c
+++ b/plugins/python/python.c
@@ -769,6 +769,18 @@ 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);
+}
+
 static int
 py_can_cache (void *handle)
 {
@@ -801,6 +813,8 @@ 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,
   .can_cache         = py_can_cache,
 
   .pread             = py_pread,
-- 
2.23.0




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