[Libguestfs] [PATCH nbdkit v2 02/10] python: Add various constants to the API.

These are accessible from the plugin by: import nbdkit if flags & nbdkit.FLAG_MAY_TRIM: &c. Many (all?) of these are not yet useful for plugins, some will never be useful, but they only consume a tiny bit of memory and it's nice to have the complete set available for future use. --- plugins/python/python.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/plugins/python/python.c b/plugins/python/python.c index d65ac45..69cf4e9 100644 --- a/plugins/python/python.c +++ b/plugins/python/python.c @@ -231,6 +231,33 @@ create_nbdkit_module (void) nbdkit_error ("could not create the nbdkit API module"); exit (EXIT_FAILURE); } + + /* Constants corresponding to various flags. */ + PyModule_AddIntConstant (m, "THREAD_MODEL_SERIALIZE_CONNECTIONS", + NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS); + PyModule_AddIntConstant (m, "THREAD_MODEL_SERIALIZE_ALL_REQUESTS", + NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS); + PyModule_AddIntConstant (m, "THREAD_MODEL_SERIALIZE_REQUESTS", + NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS); + PyModule_AddIntConstant (m, "THREAD_MODEL_PARALLEL", + NBDKIT_THREAD_MODEL_PARALLEL); + + PyModule_AddIntConstant (m, "FLAG_MAY_TRIM", NBDKIT_FLAG_MAY_TRIM); + PyModule_AddIntConstant (m, "FLAG_FUA", NBDKIT_FLAG_FUA); + PyModule_AddIntConstant (m, "FLAG_REQ_ONE", NBDKIT_FLAG_REQ_ONE); + PyModule_AddIntConstant (m, "FLAG_FAST_ZERO", NBDKIT_FLAG_FAST_ZERO); + + PyModule_AddIntConstant (m, "FUA_NONE", NBDKIT_FUA_NONE); + PyModule_AddIntConstant (m, "FUA_EMULATE", NBDKIT_FUA_EMULATE); + PyModule_AddIntConstant (m, "FUA_NATIVE", NBDKIT_FUA_NATIVE); + + PyModule_AddIntConstant (m, "CACHE_NONE", NBDKIT_CACHE_NONE); + PyModule_AddIntConstant (m, "CACHE_EMULATE", NBDKIT_CACHE_EMULATE); + PyModule_AddIntConstant (m, "CACHE_NATIVE", NBDKIT_CACHE_NATIVE); + + PyModule_AddIntConstant (m, "EXTENT_HOLE", NBDKIT_EXTENT_HOLE); + PyModule_AddIntConstant (m, "EXTENT_ZERO", NBDKIT_EXTENT_ZERO); + return m; } -- 2.23.0