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From b646050b8da51c39cf21f95fa847c12784a1169c 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 15:02:44 +0000
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Subject: [PATCH 04/19] python: Add various constants to the API.
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These are accessible from the plugin by:
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import nbdkit
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if flags & nbdkit.FLAG_MAY_TRIM:
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&c.
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Many (all?) of these are not yet useful for plugins, some will never
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be useful, but they only consume a tiny bit of memory and it's nice to
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have the complete set available for future use.
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(cherry picked from commit 14b7fe2e0de881e3dfc8803484ade29a61e323c9)
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---
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plugins/python/python.c | 30 ++++++++++++++++++++++++++++++
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1 file changed, 30 insertions(+)
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diff --git a/plugins/python/python.c b/plugins/python/python.c
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index 7052aac0..47da0838 100644
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--- a/plugins/python/python.c
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+++ b/plugins/python/python.c
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@@ -231,6 +231,36 @@ create_nbdkit_module (void)
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nbdkit_error ("could not create the nbdkit API module");
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exit (EXIT_FAILURE);
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}
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+
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+ /* Constants corresponding to various flags. */
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+#define ADD_INT_CONSTANT(name) \
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+ if (PyModule_AddIntConstant (m, #name, NBDKIT_##name) == -1) { \
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+ nbdkit_error ("could not add constant %s to nbdkit API module", \
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+ #name); \
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+ exit (EXIT_FAILURE); \
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+ }
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+ ADD_INT_CONSTANT (THREAD_MODEL_SERIALIZE_CONNECTIONS);
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+ ADD_INT_CONSTANT (THREAD_MODEL_SERIALIZE_ALL_REQUESTS);
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+ ADD_INT_CONSTANT (THREAD_MODEL_SERIALIZE_REQUESTS);
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+ ADD_INT_CONSTANT (THREAD_MODEL_PARALLEL);
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+
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+ ADD_INT_CONSTANT (FLAG_MAY_TRIM);
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+ ADD_INT_CONSTANT (FLAG_FUA);
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+ ADD_INT_CONSTANT (FLAG_REQ_ONE);
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+ ADD_INT_CONSTANT (FLAG_FAST_ZERO);
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+
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+ ADD_INT_CONSTANT (FUA_NONE);
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+ ADD_INT_CONSTANT (FUA_EMULATE);
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+ ADD_INT_CONSTANT (FUA_NATIVE);
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+
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+ ADD_INT_CONSTANT (CACHE_NONE);
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+ ADD_INT_CONSTANT (CACHE_EMULATE);
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+ ADD_INT_CONSTANT (CACHE_NATIVE);
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+
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+ ADD_INT_CONSTANT (EXTENT_HOLE);
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+ ADD_INT_CONSTANT (EXTENT_ZERO);
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+#undef ADD_INT_CONSTANT
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+
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return m;
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}
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--
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2.18.2
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