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Thu, 21 Oct 2021 12:20:01 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634811711; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=qlNzPqw6ia8B6tlqqTBvPygeeTCyKs53LLdUY+T5TdI=; b=L4m3eKCXJJ8AWosgrfl5fU4RJIdx4zObvB3gN/PDN++zkMIVAXDjgcL1WQ0DQJ54j4ay6h todGJoImnEmGQ+ue4OGX/xOqFjVXDNvxgfGbeQAARyxX6tX5Wa4ty32vOUQNc3QwErP3NK heWB2ZnDIWmabGrIxWyv8icRjxawgts= X-MC-Unique: ANGkxLWHNzSvBjnks2JwSg-1 From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PATCH v3 4/5] qapi: Implement deprecated-input={reject, crash} for enum values Date: Thu, 21 Oct 2021 12:20:00 +0200 Message-Id: <20211021102001.803780-5-armbru@redhat.com> In-Reply-To: <20211021102001.803780-1-armbru@redhat.com> References: <20211021102001.803780-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-loop: libvir-list@redhat.com Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, libvir-list@redhat.com, eblake@redhat.com, pkrempa@redhat.com, marcandre.lureau@redhat.com, jsnow@redhat.com, libguestfs@redhat.com X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=libvir-list-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1634811713201100003 Content-Type: text/plain; charset="utf-8" This copies the code implementing the policy from qapi/qmp-dispatch.c to qapi/qobject-input-visitor.c. Tolerable, but if we acquire more copies, we should look into factoring them out. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Tested-by: Peter Krempa Acked-by: Peter Krempa --- qapi/compat.json | 3 ++- include/qapi/util.h | 6 +++++- qapi/qapi-visit-core.c | 18 +++++++++++++++--- scripts/qapi/types.py | 17 ++++++++++++++++- 4 files changed, 38 insertions(+), 6 deletions(-) diff --git a/qapi/compat.json b/qapi/compat.json index 1d2b76f00c..74a8493d3d 100644 --- a/qapi/compat.json +++ b/qapi/compat.json @@ -42,7 +42,8 @@ # with feature 'deprecated'. We may want to extend it to cover # semantic aspects, CLI, and experimental features. # -# Limitation: not implemented for deprecated enumeration values. +# Limitation: deprecated-output policy @hide is not implemented for +# enumeration values. They behave the same as with policy @accept. # # @deprecated-input: how to handle deprecated input (default 'accept') # @deprecated-output: how to handle deprecated output (default 'accept') diff --git a/include/qapi/util.h b/include/qapi/util.h index d7bfb30e25..257c600f99 100644 --- a/include/qapi/util.h +++ b/include/qapi/util.h @@ -11,9 +11,13 @@ #ifndef QAPI_UTIL_H #define QAPI_UTIL_H =20 +/* QEnumLookup flags */ +#define QAPI_ENUM_DEPRECATED 1 + typedef struct QEnumLookup { const char *const *array; - int size; + const unsigned char *const flags; + const int size; } QEnumLookup; =20 const char *qapi_enum_lookup(const QEnumLookup *lookup, int val); diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c index 066f77a26d..49136ae88e 100644 --- a/qapi/qapi-visit-core.c +++ b/qapi/qapi-visit-core.c @@ -393,7 +393,7 @@ static bool input_type_enum(Visitor *v, const char *nam= e, int *obj, const QEnumLookup *lookup, Error **errp) { int64_t value; - char *enum_str; + g_autofree char *enum_str =3D NULL; =20 if (!visit_type_str(v, name, &enum_str, errp)) { return false; @@ -402,11 +402,23 @@ static bool input_type_enum(Visitor *v, const char *n= ame, int *obj, value =3D qapi_enum_parse(lookup, enum_str, -1, NULL); if (value < 0) { error_setg(errp, QERR_INVALID_PARAMETER, enum_str); - g_free(enum_str); return false; } =20 - g_free(enum_str); + if (lookup->flags && (lookup->flags[value] & QAPI_ENUM_DEPRECATED)) { + switch (v->compat_policy.deprecated_input) { + case COMPAT_POLICY_INPUT_ACCEPT: + break; + case COMPAT_POLICY_INPUT_REJECT: + error_setg(errp, "Deprecated value '%s' disabled by policy", + enum_str); + return false; + case COMPAT_POLICY_INPUT_CRASH: + default: + abort(); + } + } + *obj =3D value; return true; } diff --git a/scripts/qapi/types.py b/scripts/qapi/types.py index 831294fe42..ab2441adc9 100644 --- a/scripts/qapi/types.py +++ b/scripts/qapi/types.py @@ -38,6 +38,8 @@ def gen_enum_lookup(name: str, members: List[QAPISchemaEnumMember], prefix: Optional[str] =3D None) -> str: + max_index =3D c_enum_const(name, '_MAX', prefix) + flags =3D '' ret =3D mcgen(''' =20 const QEnumLookup %(c_name)s_lookup =3D { @@ -52,13 +54,26 @@ def gen_enum_lookup(name: str, ''', index=3Dindex, name=3Dmemb.name) ret +=3D memb.ifcond.gen_endif() + if 'deprecated' in (f.name for f in memb.features): + flags +=3D mcgen(''' + [%(index)s] =3D QAPI_ENUM_DEPRECATED, +''', + index=3Dindex) + + if flags: + ret +=3D mcgen(''' + }, + .flags =3D (const unsigned char[%(max_index)s]) { +''', + max_index=3Dmax_index) + ret +=3D flags =20 ret +=3D mcgen(''' }, .size =3D %(max_index)s }; ''', - max_index=3Dc_enum_const(name, '_MAX', prefix)) + max_index=3Dmax_index) return ret =20 =20 --=20 2.31.1