From fc471c18d5d2ec713d5a019f9530398675494bc8 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 28 Apr 2016 15:45:13 -0600 Subject: qapi: Consolidate QMP input visitor creation Rather than having two separate ways to create a QMP input visitor, where the safer approach has the more verbose name, it is better to consolidate things into a single function where the caller must explicitly choose whether to be strict or to ignore excess input. This patch is the strictly mechanical conversion; the next patch will then audit which uses can be made stricter. Signed-off-by: Eric Blake Message-Id: <1461879932-9020-6-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- scripts/qapi-commands.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'scripts/qapi-commands.py') diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index b570069faa..6261e44df1 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -115,7 +115,7 @@ def gen_marshal(name, arg_type, ret_type): if arg_type and arg_type.members: ret += mcgen(''' - QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args)); + QmpInputVisitor *qiv = qmp_input_visitor_new(QOBJECT(args), true); QapiDeallocVisitor *qdv; Visitor *v; %(c_name)s arg = {0}; -- cgit 1.4.1 From ed8415351941715f606749d6cdd64553b0de3f01 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 28 Apr 2016 15:45:16 -0600 Subject: qapi-commands: Wrap argument visit in visit_start_struct The qmp-input visitor was allowing callers to play rather fast and loose: when visiting a QDict, you could grab members of the root dictionary without first pushing into the dict; among the culprit callers was the generated marshal code on the 'arguments' dictionary of a QMP command. But we are about to tighten the input visitor, at which point the generated marshal code MUST follow the same paradigms as everyone else, of pushing into the struct before grabbing its keys. Generated code grows as follows: |@@ -515,7 +641,12 @@ void qmp_marshal_blockdev_backup(QDict * | BlockdevBackup arg = {0}; | | v = qmp_input_get_visitor(qiv); |+ visit_start_struct(v, NULL, NULL, 0, &err); |+ if (err) { |+ goto out; |+ } | visit_type_BlockdevBackup_members(v, &arg, &err); |+ visit_end_struct(v, err ? NULL : &err); | if (err) { | goto out; | } |@@ -527,7 +715,9 @@ out: | qmp_input_visitor_cleanup(qiv); | qdv = qapi_dealloc_visitor_new(); | v = qapi_dealloc_get_visitor(qdv); |+ visit_start_struct(v, NULL, NULL, 0, NULL); | visit_type_BlockdevBackup_members(v, &arg, NULL); |+ visit_end_struct(v, NULL); | qapi_dealloc_visitor_cleanup(qdv); | } The use of 'err ? NULL : &err' is temporary; a later patch will clean that up when it splits visit_end_struct(). Prior to this patch, the fact that there was no final visit_end_struct() meant that even though we are using a strict input visit, the marshalling code was not detecting excess input at the top level (only in nested levels). Fortunately, we have code in monitor.c:qmp_check_client_args() that also checks for no excess arguments at the top level. But as the generated code is more compact than the manual check, a later patch will clean up monitor.c to drop the redundancy added here. Signed-off-by: Eric Blake Message-Id: <1461879932-9020-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- docs/qapi-code-gen.txt | 7 +++++++ scripts/qapi-commands.py | 7 +++++++ 2 files changed, 14 insertions(+) (limited to 'scripts/qapi-commands.py') diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt index 4a917f9e25..b4ae1be3b4 100644 --- a/docs/qapi-code-gen.txt +++ b/docs/qapi-code-gen.txt @@ -1002,7 +1002,12 @@ Example: UserDefOneList *arg1 = NULL; v = qmp_input_get_visitor(qiv); + visit_start_struct(v, NULL, NULL, 0, &err); + if (err) { + goto out; + } visit_type_UserDefOneList(v, "arg1", &arg1, &err); + visit_end_struct(v, err ? NULL : &err); if (err) { goto out; } @@ -1019,7 +1024,9 @@ Example: qmp_input_visitor_cleanup(qiv); qdv = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(qdv); + visit_start_struct(v, NULL, NULL, 0, NULL); visit_type_UserDefOneList(v, "arg1", &arg1, NULL); + visit_end_struct(v, NULL); qapi_dealloc_visitor_cleanup(qdv); } diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index 6261e44df1..04549fa183 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -121,7 +121,12 @@ def gen_marshal(name, arg_type, ret_type): %(c_name)s arg = {0}; v = qmp_input_get_visitor(qiv); + visit_start_struct(v, NULL, NULL, 0, &err); + if (err) { + goto out; + } visit_type_%(c_name)s_members(v, &arg, &err); + visit_end_struct(v, err ? NULL : &err); if (err) { goto out; } @@ -150,7 +155,9 @@ out: qmp_input_visitor_cleanup(qiv); qdv = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(qdv); + visit_start_struct(v, NULL, NULL, 0, NULL); visit_type_%(c_name)s_members(v, &arg, NULL); + visit_end_struct(v, NULL); qapi_dealloc_visitor_cleanup(qdv); ''', c_name=arg_type.c_name()) -- cgit 1.4.1 From 15c2f669e3fb2bc97f7b42d1871f595c0ac24af8 Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 28 Apr 2016 15:45:27 -0600 Subject: qapi: Split visit_end_struct() into pieces As mentioned in previous patches, we want to call visit_end_struct() functions unconditionally, so that visitors can release resources tied up since the matching visit_start_struct() without also having to worry about error priority if more than one error occurs. Even though error_propagate() can be safely used to ignore a second error during cleanup caused by a first error, it is simpler if the cleanup cannot set an error. So, split out the error checking portion (basically, input visitors checking for unvisited keys) into a new function visit_check_struct(), which can be safely skipped if any earlier errors are encountered, and leave the cleanup portion (which never fails, but must be called unconditionally if visit_start_struct() succeeded) in visit_end_struct(). Generated code in qapi-visit.c has diffs resembling: |@@ -59,10 +59,12 @@ void visit_type_ACPIOSTInfo(Visitor *v, | goto out_obj; | } | visit_type_ACPIOSTInfo_members(v, obj, &err); |- error_propagate(errp, err); |- err = NULL; |+ if (err) { |+ goto out_obj; |+ } |+ visit_check_struct(v, &err); | out_obj: |- visit_end_struct(v, &err); |+ visit_end_struct(v); | out: and in qapi-event.c: @@ -47,7 +47,10 @@ void qapi_event_send_acpi_device_ost(ACP | goto out; | } | visit_type_q_obj_ACPI_DEVICE_OST_arg_members(v, ¶m, &err); |- visit_end_struct(v, err ? NULL : &err); |+ if (!err) { |+ visit_check_struct(v, &err); |+ } |+ visit_end_struct(v); | if (err) { | goto out; Signed-off-by: Eric Blake Message-Id: <1461879932-9020-20-git-send-email-eblake@redhat.com> [Conflict with a doc fixup resolved] Signed-off-by: Markus Armbruster --- block/crypto.c | 14 ++++++++------ docs/qapi-code-gen.txt | 15 ++++++++++----- hw/ppc/spapr_drc.c | 3 ++- hw/virtio/virtio-balloon.c | 15 ++++++++------- include/qapi/visitor-impl.h | 5 ++++- include/qapi/visitor.h | 21 ++++++++++++++++----- qapi/opts-visitor.c | 17 +++++++++++++++-- qapi/qapi-dealloc-visitor.c | 2 +- qapi/qapi-visit-core.c | 11 +++++++++-- qapi/qmp-input-visitor.c | 35 ++++++++++++++++++++--------------- qapi/qmp-output-visitor.c | 2 +- qom/object.c | 5 ++--- qom/object_interfaces.c | 23 ++++++++++------------- scripts/qapi-commands.py | 7 +++++-- scripts/qapi-event.py | 5 ++++- scripts/qapi-visit.py | 15 +++++++++------ tests/test-qmp-input-visitor.c | 3 ++- tests/test-qmp-output-visitor.c | 3 ++- 18 files changed, 128 insertions(+), 73 deletions(-) (limited to 'scripts/qapi-commands.py') diff --git a/block/crypto.c b/block/crypto.c index 1903e84fbd..2424a4c9c9 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -196,7 +196,6 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, OptsVisitor *ov; QCryptoBlockOpenOptions *ret = NULL; Error *local_err = NULL; - Error *end_err = NULL; ret = g_new0(QCryptoBlockOpenOptions, 1); ret->format = format; @@ -219,9 +218,11 @@ block_crypto_open_opts_init(QCryptoBlockFormat format, error_setg(&local_err, "Unsupported block format %d", format); break; } + if (!local_err) { + visit_check_struct(opts_get_visitor(ov), &local_err); + } - visit_end_struct(opts_get_visitor(ov), &end_err); - error_propagate(&local_err, end_err); + visit_end_struct(opts_get_visitor(ov)); out: if (local_err) { @@ -242,7 +243,6 @@ block_crypto_create_opts_init(QCryptoBlockFormat format, OptsVisitor *ov; QCryptoBlockCreateOptions *ret = NULL; Error *local_err = NULL; - Error *end_err = NULL; ret = g_new0(QCryptoBlockCreateOptions, 1); ret->format = format; @@ -265,9 +265,11 @@ block_crypto_create_opts_init(QCryptoBlockFormat format, error_setg(&local_err, "Unsupported block format %d", format); break; } + if (!local_err) { + visit_check_struct(opts_get_visitor(ov), &local_err); + } - visit_end_struct(opts_get_visitor(ov), &end_err); - error_propagate(&local_err, end_err); + visit_end_struct(opts_get_visitor(ov)); out: if (local_err) { diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt index b4ae1be3b4..d135847c87 100644 --- a/docs/qapi-code-gen.txt +++ b/docs/qapi-code-gen.txt @@ -899,10 +899,12 @@ Example: goto out_obj; } visit_type_UserDefOne_members(v, *obj, &err); - error_propagate(errp, err); - err = NULL; + if (err) { + goto out_obj; + } + visit_check_struct(v, &err); out_obj: - visit_end_struct(v, &err); + visit_end_struct(v); out: error_propagate(errp, err); } @@ -1007,7 +1009,10 @@ Example: goto out; } visit_type_UserDefOneList(v, "arg1", &arg1, &err); - visit_end_struct(v, err ? NULL : &err); + if (!err) { + visit_check_struct(v, &err); + } + visit_end_struct(v); if (err) { goto out; } @@ -1026,7 +1031,7 @@ Example: v = qapi_dealloc_get_visitor(qdv); visit_start_struct(v, NULL, NULL, 0, NULL); visit_type_UserDefOneList(v, "arg1", &arg1, NULL); - visit_end_struct(v, NULL); + visit_end_struct(v); qapi_dealloc_visitor_cleanup(qdv); } diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 480a8c607c..e3a6191ad4 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -297,7 +297,8 @@ static void prop_get_fdt(Object *obj, Visitor *v, const char *name, case FDT_END_NODE: /* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */ g_assert(fdt_depth > 0); - visit_end_struct(v, &err); + visit_check_struct(v, &err); + visit_end_struct(v); if (err) { error_propagate(errp, err); return; diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 9dbe681790..8c15e09470 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -138,17 +138,18 @@ static void balloon_stats_get_all(Object *obj, Visitor *v, const char *name, for (i = 0; i < VIRTIO_BALLOON_S_NR; i++) { visit_type_uint64(v, balloon_stat_names[i], &s->stats[i], &err); if (err) { - break; + goto out_nested; } } - error_propagate(errp, err); - err = NULL; - visit_end_struct(v, &err); + visit_check_struct(v, &err); +out_nested: + visit_end_struct(v); + if (!err) { + visit_check_struct(v, &err); + } out_end: - error_propagate(errp, err); - err = NULL; - visit_end_struct(v, &err); + visit_end_struct(v); out: error_propagate(errp, err); } diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h index 88d27d58de..b20a9226e0 100644 --- a/include/qapi/visitor-impl.h +++ b/include/qapi/visitor-impl.h @@ -43,8 +43,11 @@ struct Visitor void (*start_struct)(Visitor *v, const char *name, void **obj, size_t size, Error **errp); + /* Optional; intended for input visitors */ + void (*check_struct)(Visitor *v, Error **errp); + /* Must be set to visit structs */ - void (*end_struct)(Visitor *v, Error **errp); + void (*end_struct)(Visitor *v); /* Must be set */ void (*start_list)(Visitor *v, const char *name, Error **errp); diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h index 709cca0774..fe268fe78d 100644 --- a/include/qapi/visitor.h +++ b/include/qapi/visitor.h @@ -192,10 +192,11 @@ * } * outlist: * visit_end_list(v); + * if (!err) { + * visit_check_struct(v, &err); + * } * outobj: - * error_propagate(errp, err); - * err = NULL; - * visit_end_struct(v, &err); + * visit_end_struct(v); * out: * error_propagate(errp, err); * ...clean up v... @@ -249,17 +250,27 @@ void visit_start_struct(Visitor *v, const char *name, void **obj, size_t size, Error **errp); /* - * Complete an object visit started earlier. + * Prepare for completing an object visit. * * @errp obeys typical error usage, and reports failures such as * unparsed keys remaining in the input stream. * + * Should be called prior to visit_end_struct() if all other + * intermediate visit steps were successful, to allow the visitor one + * last chance to report errors. May be skipped on a cleanup path, + * where there is no need to check for further errors. + */ +void visit_check_struct(Visitor *v, Error **errp); + +/* + * Complete an object visit started earlier. + * * Must be called after any successful use of visit_start_struct(), * even if intermediate processing was skipped due to errors, to allow * the backend to release any resources. Destroying the visitor early * behaves as if this was implicitly called. */ -void visit_end_struct(Visitor *v, Error **errp); +void visit_end_struct(Visitor *v); /*** Visiting lists ***/ diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c index 4cb6436a1f..ece0598e34 100644 --- a/qapi/opts-visitor.c +++ b/qapi/opts-visitor.c @@ -159,13 +159,13 @@ opts_start_struct(Visitor *v, const char *name, void **obj, static void -opts_end_struct(Visitor *v, Error **errp) +opts_check_struct(Visitor *v, Error **errp) { OptsVisitor *ov = to_ov(v); GHashTableIter iter; GQueue *any; - if (--ov->depth > 0) { + if (ov->depth > 0) { return; } @@ -177,6 +177,18 @@ opts_end_struct(Visitor *v, Error **errp) first = g_queue_peek_head(any); error_setg(errp, QERR_INVALID_PARAMETER, first->name); } +} + + +static void +opts_end_struct(Visitor *v) +{ + OptsVisitor *ov = to_ov(v); + + if (--ov->depth > 0) { + return; + } + g_hash_table_destroy(ov->unprocessed_opts); ov->unprocessed_opts = NULL; if (ov->fake_id_opt) { @@ -516,6 +528,7 @@ opts_visitor_new(const QemuOpts *opts) ov->visitor.type = VISITOR_INPUT; ov->visitor.start_struct = &opts_start_struct; + ov->visitor.check_struct = &opts_check_struct; ov->visitor.end_struct = &opts_end_struct; ov->visitor.start_list = &opts_start_list; diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c index 413d525ad8..9005badb25 100644 --- a/qapi/qapi-dealloc-visitor.c +++ b/qapi/qapi-dealloc-visitor.c @@ -67,7 +67,7 @@ static void qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj, qapi_dealloc_push(qov, obj); } -static void qapi_dealloc_end_struct(Visitor *v, Error **errp) +static void qapi_dealloc_end_struct(Visitor *v) { QapiDeallocVisitor *qov = to_qov(v); void **obj = qapi_dealloc_pop(qov); diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c index fe6afe8ca8..58144f67b7 100644 --- a/qapi/qapi-visit-core.c +++ b/qapi/qapi-visit-core.c @@ -36,9 +36,16 @@ void visit_start_struct(Visitor *v, const char *name, void **obj, error_propagate(errp, err); } -void visit_end_struct(Visitor *v, Error **errp) +void visit_check_struct(Visitor *v, Error **errp) { - v->end_struct(v, errp); + if (v->check_struct) { + v->check_struct(v, errp); + } +} + +void visit_end_struct(Visitor *v) +{ + v->end_struct(v); } void visit_start_list(Visitor *v, const char *name, Error **errp) diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c index 30e7cb38f2..90b9df11c4 100644 --- a/qapi/qmp-input-visitor.c +++ b/qapi/qmp-input-visitor.c @@ -125,9 +125,11 @@ static void qmp_input_push(QmpInputVisitor *qiv, QObject *obj, Error **errp) } -static void qmp_input_pop(QmpInputVisitor *qiv, Error **errp) +static void qmp_input_check_struct(Visitor *v, Error **errp) { + QmpInputVisitor *qiv = to_qiv(v); StackObject *tos = &qiv->stack[qiv->nb_stack - 1]; + assert(qiv->nb_stack > 0); if (qiv->strict) { @@ -140,6 +142,20 @@ static void qmp_input_pop(QmpInputVisitor *qiv, Error **errp) if (g_hash_table_iter_next(&iter, (void **)&key, NULL)) { error_setg(errp, QERR_QMP_EXTRA_MEMBER, key); } + } + } +} + +static void qmp_input_pop(Visitor *v) +{ + QmpInputVisitor *qiv = to_qiv(v); + StackObject *tos = &qiv->stack[qiv->nb_stack - 1]; + + assert(qiv->nb_stack > 0); + + if (qiv->strict) { + GHashTable * const top_ht = qiv->stack[qiv->nb_stack - 1].h; + if (top_ht) { g_hash_table_unref(top_ht); } tos->h = NULL; @@ -175,12 +191,6 @@ static void qmp_input_start_struct(Visitor *v, const char *name, void **obj, } } -static void qmp_input_end_struct(Visitor *v, Error **errp) -{ - QmpInputVisitor *qiv = to_qiv(v); - - qmp_input_pop(qiv, errp); -} static void qmp_input_start_list(Visitor *v, const char *name, Error **errp) { @@ -218,12 +228,6 @@ static GenericList *qmp_input_next_list(Visitor *v, GenericList **list, return entry; } -static void qmp_input_end_list(Visitor *v) -{ - QmpInputVisitor *qiv = to_qiv(v); - - qmp_input_pop(qiv, &error_abort); -} static void qmp_input_start_alternate(Visitor *v, const char *name, GenericAlternate **obj, size_t size, @@ -383,10 +387,11 @@ QmpInputVisitor *qmp_input_visitor_new(QObject *obj, bool strict) v->visitor.type = VISITOR_INPUT; v->visitor.start_struct = qmp_input_start_struct; - v->visitor.end_struct = qmp_input_end_struct; + v->visitor.check_struct = qmp_input_check_struct; + v->visitor.end_struct = qmp_input_pop; v->visitor.start_list = qmp_input_start_list; v->visitor.next_list = qmp_input_next_list; - v->visitor.end_list = qmp_input_end_list; + v->visitor.end_list = qmp_input_pop; v->visitor.start_alternate = qmp_input_start_alternate; v->visitor.type_int64 = qmp_input_type_int64; v->visitor.type_uint64 = qmp_input_type_uint64; diff --git a/qapi/qmp-output-visitor.c b/qapi/qmp-output-visitor.c index 4e21f1ddf0..232ad58221 100644 --- a/qapi/qmp-output-visitor.c +++ b/qapi/qmp-output-visitor.c @@ -111,7 +111,7 @@ static void qmp_output_start_struct(Visitor *v, const char *name, void **obj, qmp_output_push(qov, dict); } -static void qmp_output_end_struct(Visitor *v, Error **errp) +static void qmp_output_end_struct(Visitor *v) { QmpOutputVisitor *qov = to_qov(v); QObject *value = qmp_output_pop(qov); diff --git a/qom/object.c b/qom/object.c index 8e6e68dffc..3bc8a009bb 100644 --- a/qom/object.c +++ b/qom/object.c @@ -2036,10 +2036,9 @@ static void property_get_tm(Object *obj, Visitor *v, const char *name, if (err) { goto out_end; } + visit_check_struct(v, &err); out_end: - error_propagate(errp, err); - err = NULL; - visit_end_struct(v, errp); + visit_end_struct(v); out: error_propagate(errp, err); diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c index cad5542de6..51e62e29d6 100644 --- a/qom/object_interfaces.c +++ b/qom/object_interfaces.c @@ -42,7 +42,7 @@ Object *user_creatable_add(const QDict *qdict, char *type = NULL; char *id = NULL; Object *obj = NULL; - Error *local_err = NULL, *end_err = NULL; + Error *local_err = NULL; QDict *pdict; pdict = qdict_clone_shallow(qdict); @@ -63,21 +63,15 @@ Object *user_creatable_add(const QDict *qdict, if (local_err) { goto out_visit; } - - obj = user_creatable_add_type(type, id, pdict, v, &local_err); + visit_check_struct(v, &local_err); if (local_err) { goto out_visit; } - out_visit: - visit_end_struct(v, &end_err); - if (end_err) { - error_propagate(&local_err, end_err); - if (obj) { - user_creatable_del(id, NULL); - } - goto out; - } + obj = user_creatable_add_type(type, id, pdict, v, &local_err); + +out_visit: + visit_end_struct(v); out: QDECREF(pdict); @@ -130,7 +124,10 @@ Object *user_creatable_add_type(const char *type, const char *id, break; } } - visit_end_struct(v, local_err ? NULL : &local_err); + if (!local_err) { + visit_check_struct(v, &local_err); + } + visit_end_struct(v); if (local_err) { goto out; } diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index 04549fa183..8c6acb3f3f 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -126,7 +126,10 @@ def gen_marshal(name, arg_type, ret_type): goto out; } visit_type_%(c_name)s_members(v, &arg, &err); - visit_end_struct(v, err ? NULL : &err); + if (!err) { + visit_check_struct(v, &err); + } + visit_end_struct(v); if (err) { goto out; } @@ -157,7 +160,7 @@ out: v = qapi_dealloc_get_visitor(qdv); visit_start_struct(v, NULL, NULL, 0, NULL); visit_type_%(c_name)s_members(v, &arg, NULL); - visit_end_struct(v, NULL); + visit_end_struct(v); qapi_dealloc_visitor_cleanup(qdv); ''', c_name=arg_type.c_name()) diff --git a/scripts/qapi-event.py b/scripts/qapi-event.py index 9b5c5b535d..21fb16744d 100644 --- a/scripts/qapi-event.py +++ b/scripts/qapi-event.py @@ -98,7 +98,10 @@ def gen_event_send(name, arg_type): goto out; } visit_type_%(c_name)s_members(v, ¶m, &err); - visit_end_struct(v, err ? NULL : &err); + if (!err) { + visit_check_struct(v, &err); + } + visit_end_struct(v); if (err) { goto out; } diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py index 31d2330356..bdf8971440 100644 --- a/scripts/qapi-visit.py +++ b/scripts/qapi-visit.py @@ -186,9 +186,10 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error break; } visit_type_%(c_type)s_members(v, &(*obj)->u.%(c_name)s, &err); - error_propagate(errp, err); - err = NULL; - visit_end_struct(v, &err); + if (!err) { + visit_check_struct(v, &err); + } + visit_end_struct(v); ''', c_type=var.type.c_name(), c_name=c_name(var.name)) @@ -236,10 +237,12 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error goto out_obj; } visit_type_%(c_name)s_members(v, *obj, &err); - error_propagate(errp, err); - err = NULL; + if (err) { + goto out_obj; + } + visit_check_struct(v, &err); out_obj: - visit_end_struct(v, &err); + visit_end_struct(v); out: error_propagate(errp, err); } diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c index 10e00ecbc7..6617276bce 100644 --- a/tests/test-qmp-input-visitor.c +++ b/tests/test-qmp-input-visitor.c @@ -303,7 +303,8 @@ static void test_visitor_in_null(TestInputVisitorData *data, error_free_or_abort(&err); visit_type_null(v, "b", &err); error_free_or_abort(&err); - visit_end_struct(v, &error_abort); + visit_check_struct(v, &error_abort); + visit_end_struct(v); } static void test_visitor_in_union_flat(TestInputVisitorData *data, diff --git a/tests/test-qmp-output-visitor.c b/tests/test-qmp-output-visitor.c index 5543511c21..1f80e696ea 100644 --- a/tests/test-qmp-output-visitor.c +++ b/tests/test-qmp-output-visitor.c @@ -498,7 +498,8 @@ static void test_visitor_out_null(TestOutputVisitorData *data, visit_start_struct(data->ov, NULL, NULL, 0, &error_abort); visit_type_null(data->ov, "a", &error_abort); - visit_end_struct(data->ov, &error_abort); + visit_check_struct(data->ov, &error_abort); + visit_end_struct(data->ov); arg = qmp_output_get_qobject(data->qov); g_assert(qobject_type(arg) == QTYPE_QDICT); qdict = qobject_to_qdict(arg); -- cgit 1.4.1