Re: [Libguestfs] [PATCH v2 5/9] qapi: Generalize struct member policy checking

The generated visitor functions call visit_deprecated_accept() and visit_deprecated() when visiting a struct member with special feature flag 'deprecated'. This makes the feature flag visible to the actual visitors. I want to make feature flag 'unstable' visible there as well, so I can add policy for it. To let me make it visible, replace these functions by visit_policy_reject() and visit_policy_skip(), which take the member's special features as an argument. Note that the new functions have the opposite sense, i.e. the return value flips. Signed-off-by: Markus Armbruster <armbru(a)redhat.com&gt; --- include/qapi/visitor-impl.h | 6 ++++-- include/qapi/visitor.h | 17 +++++++++++++---- qapi/qapi-forward-visitor.c | 16 +++++++++------- qapi/qapi-visit-core.c | 22 ++++++++++++---------- qapi/qobject-input-visitor.c | 15 ++++++++++----- qapi/qobject-output-visitor.c | 9 ++++++--- qapi/trace-events | 4 ++-- scripts/qapi/visit.py | 14 +++++++------- 8 files changed, 63 insertions(+), 40 deletions(-)

-static bool qobject_input_deprecated_accept(Visitor *v, const char *name, - Error **errp) +static bool qobject_input_policy_reject(Visitor *v, const char *name, + unsigned special_features, + Error **errp) { + if (!(special_features & 1u << QAPI_DEPRECATED)) { + return false; + } + switch (v->compat_policy.deprecated_input) { case COMPAT_POLICY_INPUT_ACCEPT: - return true; + return false; case COMPAT_POLICY_INPUT_REJECT: error_setg(errp, "Deprecated parameter '%s' disabled by policy", name); - return false; + return true; case COMPAT_POLICY_INPUT_CRASH:

default: abort();