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From 17721b316dd66b0a1ed792eeccd2489fb97828df Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Thu, 21 Nov 2019 16:42:59 +0000
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Subject: [PATCH 07/19] python: Implement can_zero, can_fast_zero.
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(cherry picked from commit 039f600d2ad7a9ff04523a165eb2fe41b9c87c01)
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---
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plugins/python/nbdkit-python-plugin.pod | 16 ++++++++++++++--
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plugins/python/python.c | 14 ++++++++++++++
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2 files changed, 28 insertions(+), 2 deletions(-)
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diff --git a/plugins/python/nbdkit-python-plugin.pod b/plugins/python/nbdkit-python-plugin.pod
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index 0ea8deef..1f1c30f6 100644
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--- a/plugins/python/nbdkit-python-plugin.pod
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+++ b/plugins/python/nbdkit-python-plugin.pod
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@@ -208,6 +208,20 @@ contents will be garbage collected.
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def can_trim(h):
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# return a boolean
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+=item C<can_zero>
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+
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+(Optional)
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+
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+ def can_zero(h):
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+ # return a boolean
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+
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+=item C<can_fast_zero>
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+
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+(Optional)
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+
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+ def can_fast_zero(h):
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+ # return a boolean
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+
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=item C<pread>
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(Required)
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@@ -326,8 +340,6 @@ C<config_help>,
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C<magic_config_key>,
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C<can_fua>,
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C<can_cache>,
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-C<can_zero>,
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-C<can_fast_zero>,
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C<can_extents>,
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C<can_multi_conn>,
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C<extents>.
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diff --git a/plugins/python/python.c b/plugins/python/python.c
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index c5cf38e5..38fc1193 100644
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--- a/plugins/python/python.c
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+++ b/plugins/python/python.c
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@@ -797,6 +797,18 @@ py_can_trim (void *handle)
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return boolean_callback (handle, "can_trim", "trim");
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}
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+static int
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+py_can_zero (void *handle)
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+{
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+ return boolean_callback (handle, "can_zero", "zero");
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+}
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+
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+static int
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+py_can_fast_zero (void *handle)
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+{
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+ return boolean_callback (handle, "can_fast_zero", NULL);
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+}
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+
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#define py_config_help \
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"script=<FILENAME> (required) The Python plugin to run.\n" \
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"[other arguments may be used by the plugin that you load]"
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@@ -823,6 +835,8 @@ static struct nbdkit_plugin plugin = {
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.can_write = py_can_write,
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.can_flush = py_can_flush,
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.can_trim = py_can_trim,
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+ .can_zero = py_can_zero,
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+ .can_fast_zero = py_can_fast_zero,
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.pread = py_pread,
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.pwrite = py_pwrite,
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--
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2.18.2
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