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* [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C
@ 2022-11-04 16:06 Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 01/30] docs/devel/qapi-code-gen: Update example to match current code Markus Armbruster
                   ` (30 more replies)
  0 siblings, 31 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth

In QAPI, absent optional members are distinct from any present value.
We thus represent an optional schema member FOO as two C members: a
FOO with the member's type, and a bool has_FOO.  Likewise for function
arguments.

However, the has_FOO is actually redundant for a pointer-valued FOO,
which can be null only when has_FOO is false, i.e. has_FOO == !!FOO.
Except for arrays, where we a null FOO can also be a present empty
array.

The redundant has_FOO are a nuisance to work with.  Improve the
generator to elide them.

PATCH 01+02 are trivial documentation cleanups.

PATCH 03 tweaks an example in documentation so it'll show the change.

PATCH 04 improves the code generator, but nerfs the change for the
schema modules where handwritten code needs to be updated.

PATCH 05-07,10-29 un-nerf in reviewable chunks.  Their commit messages
refer back to PATCH 04 for an explanation of the transformation.
Please read that first.  Note that these patches combine the
mechanical transformation with obvious, local follow-up
simplifications.  If you want them separate for easier review, let me
know.

PATCH 08+09 clean up in preparation for PATCH 10.

PATCH 28 drops the nerfing code.

v3:
* Rebased
  - Straighforward conflict with commit 58684155e4 "qcow: switch to
    *_co_* functions" resolved in PATCH 10
  - Straighforward conflict with commit 53b85d9574 "net: introduce
    qemu_set_info_str() function" in PATCH 18
  - Semantic conflict with commit 8801ccd050 "vhost-vdpa: allow
    passing opened vhostfd to vhost-vdpa" in PATCH 18
  - Straighforward conflict with commit a124109422 "qga: Move HW
    address getting to a separate function" in PATCH 29
* PATCH 07: Fix sndio backend [Stefan]
* PATCH 08+09: New; PATCH 10 adjusted for them
* PATCH 10: Fix for #ifndef LIBRBD_SUPPORTS_ENCRYPTION [Stefan]
* PATCH 10+26: Back out incorrect cleanup of qmp_transaction() in
  PATCH 10, adjust PATCH 26, and explain it in its commit message
* PATCH 11: Commit message tweaked [Philippe]
* PATCH 17: Drop superfluous conditional around g_strdup() [David]
* PATCH 20: Update stubs/qdev.c, too [Stefan]
* PATCH 23: Commit message tweaked [Philippe]

v2:
* Rebased
  - Straighforward conflicts with commit bf0c50d4aa "monitor: expose
    monitor_puts to rest of code" resolved in PATCH 08+17
  - Commit 90c066cd68 "qmp: add QMP command x-query-virtio-status"
    necessitates nerfing qapi/virtio.json in PATCH 04, un-nerfing in
    new PATCH 26
* PATCH 14: Redundant check of params-tls_creds dropped [Philippe]
* PATCH 09+16+27: Fix for Windows

Markus Armbruster (30):
  docs/devel/qapi-code-gen: Update example to match current code
  qapi: Tidy up whitespace in generated code
  docs/devel/qapi-code-gen: Extend example for next commit's change
  qapi: Start to elide redundant has_FOO in generated C
  qapi tests: Elide redundant has_FOO in generated C
  qapi acpi: Elide redundant has_FOO in generated C
  qapi audio: Elide redundant has_FOO in generated C
  blockdev: Clean up abuse of DriveBackup member format
  nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg
  qapi block: Elide redundant has_FOO in generated C
  qapi chardev: Elide redundant has_FOO in generated C
  qapi crypto: Elide redundant has_FOO in generated C
  qapi dump: Elide redundant has_FOO in generated C
  qapi job: Elide redundant has_FOO in generated C
  qapi machine: Elide redundant has_FOO in generated C
  qapi migration: Elide redundant has_FOO in generated C
  qapi misc: Elide redundant has_FOO in generated C
  qapi net: Elide redundant has_FOO in generated C
  qapi pci: Elide redundant has_FOO in generated C
  qapi qdev qom: Elide redundant has_FOO in generated C
  qapi replay: Elide redundant has_FOO in generated C
  qapi rocker: Elide redundant has_FOO in generated C
  qapi run-state: Elide redundant has_FOO in generated C
  qapi stats: Elide redundant has_FOO in generated C
  qapi tpm: Elide redundant has_FOO in generated C
  qapi transaction: Elide redundant has_FOO in generated C
  qapi ui: Elide redundant has_FOO in generated C
  qapi virtio: Elide redundant has_FOO in generated C
  qapi qga: Elide redundant has_FOO in generated C
  qapi: Drop temporary logic to support conversion step by step

 docs/devel/qapi-code-gen.rst             |  29 +++-
 docs/devel/writing-monitor-commands.rst  |  14 +-
 include/monitor/monitor.h                |   3 +-
 audio/alsaaudio.c                        |   2 +-
 audio/audio.c                            |   6 +-
 audio/audio_legacy.c                     |  17 +--
 audio/ossaudio.c                         |   8 +-
 audio/paaudio.c                          |  12 +-
 audio/sndioaudio.c                       |   2 +-
 audio/wavaudio.c                         |   2 +-
 backends/tpm/tpm_passthrough.c           |   2 -
 block/block-backend.c                    |   2 +-
 block/copy-before-write.c                |   2 +-
 block/dirty-bitmap.c                     |   1 -
 block/export/export.c                    |   2 +-
 block/export/vduse-blk.c                 |   3 +-
 block/gluster.c                          |   3 -
 block/monitor/block-hmp-cmds.c           |  48 +++---
 block/qapi-sysemu.c                      |  73 +++------
 block/qapi.c                             |  62 +++-----
 block/qcow.c                             |  10 +-
 block/qcow2.c                            |  18 +--
 block/qed.c                              |   2 +-
 block/quorum.c                           |   2 +-
 block/rbd.c                              |  15 +-
 block/ssh.c                              |   2 +-
 blockdev-nbd.c                           |   9 +-
 blockdev.c                               | 185 ++++++++++-------------
 blockjob.c                               |   2 -
 chardev/char-file.c                      |   4 +-
 chardev/char-socket.c                    |  10 +-
 chardev/char-udp.c                       |   1 -
 chardev/char.c                           |   6 +-
 crypto/block-luks.c                      |  16 +-
 dump/dump.c                              |   4 +-
 hw/acpi/core.c                           |  14 +-
 hw/acpi/cpu.c                            |   1 -
 hw/acpi/memory_hotplug.c                 |   3 +-
 hw/core/machine-hmp-cmds.c               |   2 +-
 hw/core/machine-qmp-cmds.c               |   9 +-
 hw/core/machine.c                        |  10 +-
 hw/core/numa.c                           |   8 +-
 hw/core/qdev.c                           |   2 +-
 hw/mem/pc-dimm.c                         |   1 -
 hw/net/rocker/rocker_of_dpa.c            |  13 +-
 hw/net/virtio-net.c                      |   3 +-
 hw/nvram/fw_cfg.c                        |   2 +-
 hw/pci/pci.c                             |   2 -
 hw/ppc/spapr.c                           |   2 +-
 hw/ppc/spapr_drc.c                       |   3 +-
 hw/virtio/virtio-mem-pci.c               |   4 +-
 hw/virtio/virtio-pmem-pci.c              |   1 -
 hw/virtio/virtio.c                       |   1 -
 job-qmp.c                                |   3 +-
 migration/block-dirty-bitmap.c           |   4 +-
 migration/colo.c                         |   1 -
 migration/migration.c                    |  27 +---
 monitor/hmp-cmds.c                       |  84 +++++-----
 monitor/misc.c                           |  21 +--
 monitor/qmp-cmds.c                       |  11 +-
 nbd/server.c                             |  15 +-
 net/announce.c                           |   8 +-
 net/hub.c                                |   2 +-
 net/l2tpv3.c                             |   2 +-
 net/net.c                                |  25 ++-
 net/slirp.c                              |   4 +-
 net/socket.c                             |  18 +--
 net/tap-win32.c                          |   2 +-
 net/tap.c                                |  51 +++----
 net/vhost-vdpa.c                         |   6 +-
 qemu-img.c                               |  13 +-
 qemu-nbd.c                               |   2 -
 qga/commands-posix.c                     |  32 +---
 qga/commands-win32.c                     |  40 +----
 qga/commands.c                           |  11 +-
 qom/qom-qmp-cmds.c                       |   7 +-
 replay/replay-debugging.c                |   1 -
 softmmu/runstate.c                       |  18 +--
 softmmu/vl.c                             |   2 +-
 stubs/qdev.c                             |   6 +-
 target/arm/monitor.c                     |   1 -
 target/i386/cpu-sysemu.c                 |   7 +-
 target/i386/cpu.c                        |   1 -
 target/s390x/cpu_models_sysemu.c         |   1 -
 tests/qtest/fuzz/qos_fuzz.c              |   3 +-
 tests/qtest/qmp-cmd-test.c               |   2 +-
 tests/unit/test-char.c                   |   1 -
 tests/unit/test-crypto-block.c           |   6 -
 tests/unit/test-qmp-cmds.c               |  26 ++--
 tests/unit/test-qmp-event.c              |   4 +-
 tests/unit/test-qobject-input-visitor.c  |   2 +-
 tests/unit/test-qobject-output-visitor.c |   2 -
 tests/unit/test-visitor-serialization.c  |   3 +-
 ui/console.c                             |   4 +-
 ui/input.c                               |   4 +-
 ui/spice-core.c                          |   5 -
 ui/vnc.c                                 |  10 --
 util/qemu-config.c                       |  17 +--
 scripts/qapi/commands.py                 |   9 +-
 scripts/qapi/events.py                   |   3 +-
 scripts/qapi/gen.py                      |   2 +-
 scripts/qapi/schema.py                   |  14 ++
 scripts/qapi/types.py                    |   2 +-
 scripts/qapi/visit.py                    |  17 ++-
 104 files changed, 487 insertions(+), 735 deletions(-)

-- 
2.37.3



^ permalink raw reply	[flat|nested] 41+ messages in thread

* [PATCH v3 01/30] docs/devel/qapi-code-gen: Update example to match current code
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 02/30] qapi: Tidy up whitespace in generated code Markus Armbruster
                   ` (29 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 docs/devel/qapi-code-gen.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/devel/qapi-code-gen.rst b/docs/devel/qapi-code-gen.rst
index cd9b544376..997313fce7 100644
--- a/docs/devel/qapi-code-gen.rst
+++ b/docs/devel/qapi-code-gen.rst
@@ -1748,7 +1748,7 @@ Example::
         QTAILQ_INIT(cmds);
 
         qmp_register_command(cmds, "my-command",
-                             qmp_marshal_my_command, QCO_NO_OPTIONS);
+                             qmp_marshal_my_command, 0, 0);
     }
     [Uninteresting stuff omitted...]
 
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 02/30] qapi: Tidy up whitespace in generated code
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 01/30] docs/devel/qapi-code-gen: Update example to match current code Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 03/30] docs/devel/qapi-code-gen: Extend example for next commit's change Markus Armbruster
                   ` (28 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 docs/devel/qapi-code-gen.rst | 1 -
 scripts/qapi/commands.py     | 7 +++----
 scripts/qapi/events.py       | 1 -
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/docs/devel/qapi-code-gen.rst b/docs/devel/qapi-code-gen.rst
index 997313fce7..b56ea4546d 100644
--- a/docs/devel/qapi-code-gen.rst
+++ b/docs/devel/qapi-code-gen.rst
@@ -1664,7 +1664,6 @@ Example::
     $ cat qapi-generated/example-qapi-commands.c
     [Uninteresting stuff omitted...]
 
-
     static void qmp_marshal_output_UserDefOne(UserDefOne *ret_in,
                                     QObject **ret_out, Error **errp)
     {
diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py
index 38ca38a7b9..cf68aaf0bf 100644
--- a/scripts/qapi/commands.py
+++ b/scripts/qapi/commands.py
@@ -83,7 +83,7 @@ def gen_call(name: str,
 
         trace_qmp_enter_%(name)s(req_json->str);
     }
-    ''',
+''',
                      upper=upper, name=name)
 
     ret += mcgen('''
@@ -124,13 +124,13 @@ def gen_call(name: str,
 
         trace_qmp_exit_%(name)s(ret_json->str, true);
     }
-    ''',
+''',
                          upper=upper, name=name)
         else:
             ret += mcgen('''
 
     trace_qmp_exit_%(name)s("{}", true);
-    ''',
+''',
                          name=name)
 
     return ret
@@ -316,7 +316,6 @@ def _begin_user_module(self, name: str) -> None:
 #include "qapi/error.h"
 #include "%(visit)s.h"
 #include "%(commands)s.h"
-
 ''',
                              commands=commands, visit=visit))
 
diff --git a/scripts/qapi/events.py b/scripts/qapi/events.py
index 27b44c49f5..e762d53d19 100644
--- a/scripts/qapi/events.py
+++ b/scripts/qapi/events.py
@@ -196,7 +196,6 @@ def _begin_user_module(self, name: str) -> None:
 #include "qapi/error.h"
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp-event.h"
-
 ''',
                              events=events, visit=visit,
                              prefix=self._prefix))
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 03/30] docs/devel/qapi-code-gen: Extend example for next commit's change
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 01/30] docs/devel/qapi-code-gen: Update example to match current code Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 02/30] qapi: Tidy up whitespace in generated code Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 04/30] qapi: Start to elide redundant has_FOO in generated C Markus Armbruster
                   ` (27 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé

The next commit will change the code generated for some optional
members.  The example schema contains an optional member affected by
the change.  Add one that is not affected.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 docs/devel/qapi-code-gen.rst | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/docs/devel/qapi-code-gen.rst b/docs/devel/qapi-code-gen.rst
index b56ea4546d..3a817ba498 100644
--- a/docs/devel/qapi-code-gen.rst
+++ b/docs/devel/qapi-code-gen.rst
@@ -1357,7 +1357,7 @@ qmp_my_command(); everything else is produced by the generator. ::
 
     $ cat example-schema.json
     { 'struct': 'UserDefOne',
-      'data': { 'integer': 'int', '*string': 'str' } }
+      'data': { 'integer': 'int', '*string': 'str', '*flag': 'bool' } }
 
     { 'command': 'my-command',
       'data': { 'arg1': ['UserDefOne'] },
@@ -1412,6 +1412,8 @@ Example::
         int64_t integer;
         bool has_string;
         char *string;
+        bool has_flag;
+        bool flag;
     };
 
     void qapi_free_UserDefOne(UserDefOne *obj);
@@ -1531,6 +1533,11 @@ Example::
                 return false;
             }
         }
+        if (visit_optional(v, "flag", &obj->has_flag)) {
+            if (!visit_type_bool(v, "flag", &obj->flag, errp)) {
+                return false;
+            }
+        }
         return true;
     }
 
@@ -1916,6 +1923,12 @@ Example::
                     { "type", QLIT_QSTR("str"), },
                     {}
                 })),
+                QLIT_QDICT(((QLitDictEntry[]) {
+                    { "default", QLIT_QNULL, },
+                    { "name", QLIT_QSTR("flag"), },
+                    { "type", QLIT_QSTR("bool"), },
+                    {}
+                })),
                 {}
             })), },
             { "meta-type", QLIT_QSTR("object"), },
@@ -1949,6 +1962,12 @@ Example::
             { "name", QLIT_QSTR("str"), },
             {}
         })),
+        QLIT_QDICT(((QLitDictEntry[]) {
+            { "json-type", QLIT_QSTR("boolean"), },
+            { "meta-type", QLIT_QSTR("builtin"), },
+            { "name", QLIT_QSTR("bool"), },
+            {}
+        })),
         {}
     }));
 
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 04/30] qapi: Start to elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (2 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 03/30] docs/devel/qapi-code-gen: Extend example for next commit's change Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 05/30] qapi tests: Elide " Markus Armbruster
                   ` (26 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé

In QAPI, absent optional members are distinct from any present value.
We thus represent an optional schema member FOO as two C members: a
FOO with the member's type, and a bool has_FOO.  Likewise for function
arguments.

However, has_FOO is actually redundant for a pointer-valued FOO, which
can be null only when has_FOO is false, i.e. has_FOO == !!FOO.  Except
for arrays, where we a null FOO can also be a present empty array.

The redundant has_FOO are a nuisance to work with.  Improve the
generator to elide them.  Uses of has_FOO need to be replaced as
follows.

Tests of has_FOO become the equivalent comparison of FOO with null.
For brevity, this is commonly done by implicit conversion to bool.

Assignments to has_FOO get dropped.

Likewise for arguments to has_FOO parameters.

Beware: code may violate the invariant has_FOO == !!FOO before the
transformation, and get away with it.  The above transformation can
then break things.  Two cases:

* Absent: if code ignores FOO entirely when !has_FOO (except for
  freeing it if necessary), even non-null / uninitialized FOO works.
  Such code is known to exist.

* Present: if code ignores FOO entirely when has_FOO, even null FOO
  works.  Such code should not exist.

In both cases, replacing tests of has_FOO by FOO reverts their sense.
We have to fix the value of FOO then.

To facilitate review of the necessary updates to handwritten code, add
means to opt out of this change, and opt out for all QAPI schema
modules where the change requires updates to handwritten code.  The
next few commits will remove these opt-outs in reviewable chunks, then
drop the means to opt out.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 docs/devel/qapi-code-gen.rst            |  5 +--
 docs/devel/writing-monitor-commands.rst | 14 ++++----
 scripts/qapi/commands.py                |  2 +-
 scripts/qapi/events.py                  |  2 +-
 scripts/qapi/gen.py                     |  2 +-
 scripts/qapi/schema.py                  | 48 +++++++++++++++++++++++++
 scripts/qapi/types.py                   |  2 +-
 scripts/qapi/visit.py                   | 17 +++++++--
 8 files changed, 77 insertions(+), 15 deletions(-)

diff --git a/docs/devel/qapi-code-gen.rst b/docs/devel/qapi-code-gen.rst
index 3a817ba498..5edc49aa74 100644
--- a/docs/devel/qapi-code-gen.rst
+++ b/docs/devel/qapi-code-gen.rst
@@ -1410,7 +1410,6 @@ Example::
 
     struct UserDefOne {
         int64_t integer;
-        bool has_string;
         char *string;
         bool has_flag;
         bool flag;
@@ -1525,10 +1524,12 @@ Example::
 
     bool visit_type_UserDefOne_members(Visitor *v, UserDefOne *obj, Error **errp)
     {
+        bool has_string = !!obj->string;
+
         if (!visit_type_int(v, "integer", &obj->integer, errp)) {
             return false;
         }
-        if (visit_optional(v, "string", &obj->has_string)) {
+        if (visit_optional(v, "string", &has_string)) {
             if (!visit_type_str(v, "string", &obj->string, errp)) {
                 return false;
             }
diff --git a/docs/devel/writing-monitor-commands.rst b/docs/devel/writing-monitor-commands.rst
index 2fefedcd98..2c11e71665 100644
--- a/docs/devel/writing-monitor-commands.rst
+++ b/docs/devel/writing-monitor-commands.rst
@@ -166,9 +166,9 @@ and user defined types.
 
 Now, let's update our C implementation in monitor/qmp-cmds.c::
 
- void qmp_hello_world(bool has_message, const char *message, Error **errp)
+ void qmp_hello_world(const char *message, Error **errp)
  {
-     if (has_message) {
+     if (message) {
          printf("%s\n", message);
      } else {
          printf("Hello, world\n");
@@ -210,9 +210,9 @@ file. Basically, most errors are set by calling the error_setg() function.
 Let's say we don't accept the string "message" to contain the word "love". If
 it does contain it, we want the "hello-world" command to return an error::
 
- void qmp_hello_world(bool has_message, const char *message, Error **errp)
+ void qmp_hello_world(const char *message, Error **errp)
  {
-     if (has_message) {
+     if (message) {
          if (strstr(message, "love")) {
              error_setg(errp, "the word 'love' is not allowed");
              return;
@@ -467,9 +467,9 @@ There are a number of things to be noticed:
    allocated by the regular g_malloc0() function. Note that we chose to
    initialize the memory to zero. This is recommended for all QAPI types, as
    it helps avoiding bad surprises (specially with booleans)
-4. Remember that "next_deadline" is optional? All optional members have a
-   'has_TYPE_NAME' member that should be properly set by the implementation,
-   as shown above
+4. Remember that "next_deadline" is optional? Non-pointer optional
+   members have a 'has_TYPE_NAME' member that should be properly set
+   by the implementation, as shown above
 5. Even static strings, such as "alarm_timer->name", should be dynamically
    allocated by the implementation. This is so because the QAPI also generates
    a function to free its types and it cannot distinguish between dynamically
diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py
index cf68aaf0bf..79c5e5c3a9 100644
--- a/scripts/qapi/commands.py
+++ b/scripts/qapi/commands.py
@@ -64,7 +64,7 @@ def gen_call(name: str,
     elif arg_type:
         assert not arg_type.variants
         for memb in arg_type.members:
-            if memb.optional:
+            if memb.need_has():
                 argstr += 'arg.has_%s, ' % c_name(memb.name)
             argstr += 'arg.%s, ' % c_name(memb.name)
 
diff --git a/scripts/qapi/events.py b/scripts/qapi/events.py
index e762d53d19..3cf01e96b6 100644
--- a/scripts/qapi/events.py
+++ b/scripts/qapi/events.py
@@ -60,7 +60,7 @@ def gen_param_var(typ: QAPISchemaObjectType) -> str:
     for memb in typ.members:
         ret += sep
         sep = ', '
-        if memb.optional:
+        if memb.need_has():
             ret += 'has_' + c_name(memb.name) + sep
         if memb.type.name == 'str':
             # Cast away const added in build_params()
diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py
index 113b49134d..b5a8d03e8e 100644
--- a/scripts/qapi/gen.py
+++ b/scripts/qapi/gen.py
@@ -121,7 +121,7 @@ def build_params(arg_type: Optional[QAPISchemaObjectType],
         for memb in arg_type.members:
             ret += sep
             sep = ', '
-            if memb.optional:
+            if memb.need_has():
                 ret += 'bool has_%s, ' % c_name(memb.name)
             ret += '%s %s' % (memb.type.c_param_type(),
                               c_name(memb.name))
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 3728340c37..58b00982ea 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -253,6 +253,11 @@ def doc_type(self):
             return None
         return self.name
 
+    def need_has_if_optional(self):
+        # When FOO is a pointer, has_FOO == !!FOO, i.e. has_FOO is redundant.
+        # Except for arrays; see QAPISchemaArrayType.need_has_if_optional().
+        return not self.c_type().endswith(POINTER_SUFFIX)
+
     def check(self, schema):
         QAPISchemaEntity.check(self, schema)
         for feat in self.features:
@@ -352,6 +357,11 @@ def __init__(self, name, info, element_type):
         self._element_type_name = element_type
         self.element_type = None
 
+    def need_has_if_optional(self):
+        # When FOO is an array, we still need has_FOO to distinguish
+        # absent (!has_FOO) from present and empty (has_FOO && !FOO).
+        return True
+
     def check(self, schema):
         super().check(schema)
         self.element_type = schema.resolve_type(
@@ -745,6 +755,44 @@ def __init__(self, name, info, typ, optional, ifcond=None, features=None):
         self.optional = optional
         self.features = features or []
 
+    def need_has(self):
+        assert self.type
+        # Temporary hack to support dropping the has_FOO in reviewable chunks
+        opt_out = [
+            'qapi/acpi.json',
+            'qapi/audio.json',
+            'qapi/block-core.json',
+            'qapi/block-export.json',
+            'qapi/block.json',
+            'qapi/char.json',
+            'qapi/crypto.json',
+            'qapi/dump.json',
+            'qapi/introspect.json',
+            'qapi/job.json',
+            'qapi/machine.json',
+            'qapi/machine-target.json',
+            'qapi/migration.json',
+            'qapi/misc.json',
+            'qapi/net.json',
+            'qapi/pci.json',
+            'qapi/qdev.json',
+            'qapi/qom.json',
+            'qapi/replay.json',
+            'qapi/rocker.json',
+            'qapi/run-state.json',
+            'qapi/stats.json',
+            'qapi/tpm.json',
+            'qapi/transaction.json',
+            'qapi/ui.json',
+            'qapi/virtio.json',
+            'qga/qapi-schema.json',
+            'tests/qapi-schema/qapi-schema-test.json']
+        if self.info and any(self.info.fname.endswith(mod)
+                             for mod in opt_out):
+            return self.optional
+        # End of temporary hack
+        return self.optional and self.type.need_has_if_optional()
+
     def check(self, schema):
         assert self.defined_in
         self.type = schema.resolve_type(self._type_name, self.info,
diff --git a/scripts/qapi/types.py b/scripts/qapi/types.py
index 477d027001..c39d054d2c 100644
--- a/scripts/qapi/types.py
+++ b/scripts/qapi/types.py
@@ -142,7 +142,7 @@ def gen_struct_members(members: List[QAPISchemaObjectTypeMember]) -> str:
     ret = ''
     for memb in members:
         ret += memb.ifcond.gen_if()
-        if memb.optional:
+        if memb.need_has():
             ret += mcgen('''
     bool has_%(c_name)s;
 ''',
diff --git a/scripts/qapi/visit.py b/scripts/qapi/visit.py
index 380fa197f5..26a584ee4c 100644
--- a/scripts/qapi/visit.py
+++ b/scripts/qapi/visit.py
@@ -71,6 +71,16 @@ def gen_visit_object_members(name: str,
 ''',
                 c_name=c_name(name))
 
+    sep = ''
+    for memb in members:
+        if memb.optional and not memb.need_has():
+            ret += mcgen('''
+    bool has_%(c_name)s = !!obj->%(c_name)s;
+''',
+                         c_name=c_name(memb.name))
+            sep = '\n'
+    ret += sep
+
     if base:
         ret += mcgen('''
     if (!visit_type_%(c_type)s_members(v, (%(c_type)s *)obj, errp)) {
@@ -82,10 +92,13 @@ def gen_visit_object_members(name: str,
     for memb in members:
         ret += memb.ifcond.gen_if()
         if memb.optional:
+            has = 'has_' + c_name(memb.name)
+            if memb.need_has():
+                has = 'obj->' + has
             ret += mcgen('''
-    if (visit_optional(v, "%(name)s", &obj->has_%(c_name)s)) {
+    if (visit_optional(v, "%(name)s", &%(has)s)) {
 ''',
-                         name=memb.name, c_name=c_name(memb.name))
+                         name=memb.name, has=has)
             indent.increase()
         special_features = gen_special_features(memb.features)
         if special_features != '0':
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 05/30] qapi tests: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (3 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 04/30] qapi: Start to elide redundant has_FOO in generated C Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 06/30] qapi acpi: " Markus Armbruster
                   ` (25 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for
tests/qapi-schema/qapi-schema-test.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/qtest/qmp-cmd-test.c               |  2 +-
 tests/unit/test-qmp-cmds.c               | 26 +++++++++++-------------
 tests/unit/test-qmp-event.c              |  4 ++--
 tests/unit/test-qobject-input-visitor.c  |  2 +-
 tests/unit/test-qobject-output-visitor.c |  2 --
 tests/unit/test-visitor-serialization.c  |  3 +--
 scripts/qapi/schema.py                   |  4 +---
 7 files changed, 18 insertions(+), 25 deletions(-)

diff --git a/tests/qtest/qmp-cmd-test.c b/tests/qtest/qmp-cmd-test.c
index 897e4e937b..98caf6fef6 100644
--- a/tests/qtest/qmp-cmd-test.c
+++ b/tests/qtest/qmp-cmd-test.c
@@ -174,7 +174,7 @@ static bool object_type_has_mandatory_members(SchemaInfo *type)
     g_assert(type->meta_type == SCHEMA_META_TYPE_OBJECT);
 
     for (tail = type->u.object.members; tail; tail = tail->next) {
-        if (!tail->value->has_q_default) {
+        if (!tail->value->q_default) {
             return true;
         }
     }
diff --git a/tests/unit/test-qmp-cmds.c b/tests/unit/test-qmp-cmds.c
index 6085c09995..2373cd64cb 100644
--- a/tests/unit/test-qmp-cmds.c
+++ b/tests/unit/test-qmp-cmds.c
@@ -43,15 +43,15 @@ void qmp_user_def_cmd1(UserDefOne * ud1, Error **errp)
 {
 }
 
-FeatureStruct1 *qmp_test_features0(bool has_fs0, FeatureStruct0 *fs0,
-                                   bool has_fs1, FeatureStruct1 *fs1,
-                                   bool has_fs2, FeatureStruct2 *fs2,
-                                   bool has_fs3, FeatureStruct3 *fs3,
-                                   bool has_fs4, FeatureStruct4 *fs4,
-                                   bool has_cfs1, CondFeatureStruct1 *cfs1,
-                                   bool has_cfs2, CondFeatureStruct2 *cfs2,
-                                   bool has_cfs3, CondFeatureStruct3 *cfs3,
-                                   bool has_cfs4, CondFeatureStruct4 *cfs4,
+FeatureStruct1 *qmp_test_features0(FeatureStruct0 *fs0,
+                                   FeatureStruct1 *fs1,
+                                   FeatureStruct2 *fs2,
+                                   FeatureStruct3 *fs3,
+                                   FeatureStruct4 *fs4,
+                                   CondFeatureStruct1 *cfs1,
+                                   CondFeatureStruct2 *cfs2,
+                                   CondFeatureStruct3 *cfs3,
+                                   CondFeatureStruct4 *cfs4,
                                    Error **errp)
 {
     return g_new0(FeatureStruct1, 1);
@@ -77,8 +77,7 @@ void qmp_test_command_cond_features3(Error **errp)
 {
 }
 
-UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
-                              bool has_udb1, UserDefOne *ud1b,
+UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a, UserDefOne *ud1b,
                               Error **errp)
 {
     UserDefTwo *ret;
@@ -87,8 +86,8 @@ UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
 
     ud1c->string = strdup(ud1a->string);
     ud1c->integer = ud1a->integer;
-    ud1d->string = strdup(has_udb1 ? ud1b->string : "blah0");
-    ud1d->integer = has_udb1 ? ud1b->integer : 0;
+    ud1d->string = strdup(ud1b ? ud1b->string : "blah0");
+    ud1d->integer = ud1b ? ud1b->integer : 0;
 
     ret = g_new0(UserDefTwo, 1);
     ret->string0 = strdup("blah1");
@@ -98,7 +97,6 @@ UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
     ret->dict1->dict2->userdef = ud1c;
     ret->dict1->dict2->string = strdup("blah3");
     ret->dict1->dict3 = g_new0(UserDefTwoDictDict, 1);
-    ret->dict1->has_dict3 = true;
     ret->dict1->dict3->userdef = ud1d;
     ret->dict1->dict3->string = strdup("blah4");
 
diff --git a/tests/unit/test-qmp-event.c b/tests/unit/test-qmp-event.c
index 7d961d716a..3626d2372f 100644
--- a/tests/unit/test-qmp-event.c
+++ b/tests/unit/test-qmp-event.c
@@ -109,7 +109,7 @@ static void test_event_c(TestEventData *data,
     data->expect = qdict_from_jsonf_nofail(
         "{ 'event': 'EVENT_C', 'data': {"
         " 'a': 1, 'b': { 'integer': 2, 'string': 'test1' }, 'c': 'test2' } }");
-    qapi_event_send_event_c(true, 1, true, &b, "test2");
+    qapi_event_send_event_c(true, 1, &b, "test2");
     g_assert(data->emitted);
     qobject_unref(data->expect);
 }
@@ -135,7 +135,7 @@ static void test_event_d(TestEventData *data,
         "  'struct1': { 'integer': 2, 'string': 'test1', 'enum1': 'value1' },"
         "  'string': 'test2', 'enum2': 'value2' },"
         " 'b': 'test3', 'enum3': 'value3' } }");
-    qapi_event_send_event_d(&a, "test3", false, NULL, true, ENUM_ONE_VALUE3);
+    qapi_event_send_event_d(&a, "test3", NULL, true, ENUM_ONE_VALUE3);
     g_assert(data->emitted);
     qobject_unref(data->expect);
 }
diff --git a/tests/unit/test-qobject-input-visitor.c b/tests/unit/test-qobject-input-visitor.c
index 5f614afdbf..77fbf985be 100644
--- a/tests/unit/test-qobject-input-visitor.c
+++ b/tests/unit/test-qobject-input-visitor.c
@@ -431,7 +431,7 @@ static void test_visitor_in_struct_nested(TestInputVisitorData *data,
     g_assert_cmpint(udp->dict1->dict2->userdef->integer, ==, 42);
     g_assert_cmpstr(udp->dict1->dict2->userdef->string, ==, "string");
     g_assert_cmpstr(udp->dict1->dict2->string, ==, "string2");
-    g_assert(udp->dict1->has_dict3 == false);
+    g_assert(!udp->dict1->dict3);
 }
 
 static void test_visitor_in_list(TestInputVisitorData *data,
diff --git a/tests/unit/test-qobject-output-visitor.c b/tests/unit/test-qobject-output-visitor.c
index 66b27fad66..7f054289fe 100644
--- a/tests/unit/test-qobject-output-visitor.c
+++ b/tests/unit/test-qobject-output-visitor.c
@@ -182,7 +182,6 @@ static void test_visitor_out_struct_nested(TestOutputVisitorData *data,
     ud2->dict1->dict2->string = g_strdup(strings[2]);
 
     ud2->dict1->dict3 = g_malloc0(sizeof(*ud2->dict1->dict3));
-    ud2->dict1->has_dict3 = true;
     ud2->dict1->dict3->userdef = g_new0(UserDefOne, 1);
     ud2->dict1->dict3->userdef->string = g_strdup(string);
     ud2->dict1->dict3->userdef->integer = value;
@@ -284,7 +283,6 @@ static void test_visitor_out_list_qapi_free(TestOutputVisitorData *data,
         value->dict1->dict2->userdef->string = g_strdup(string);
         value->dict1->dict2->userdef->integer = 42;
         value->dict1->dict2->string = g_strdup(string);
-        value->dict1->has_dict3 = false;
 
         QAPI_LIST_PREPEND(head, value);
     }
diff --git a/tests/unit/test-visitor-serialization.c b/tests/unit/test-visitor-serialization.c
index 667e8fed82..c2056c3eaa 100644
--- a/tests/unit/test-visitor-serialization.c
+++ b/tests/unit/test-visitor-serialization.c
@@ -223,7 +223,6 @@ static UserDefTwo *nested_struct_create(void)
     udnp->dict1->dict2->userdef->string = strdup("test_string");
     udnp->dict1->dict2->string = strdup("test_string2");
     udnp->dict1->dict3 = g_malloc0(sizeof(*udnp->dict1->dict3));
-    udnp->dict1->has_dict3 = true;
     udnp->dict1->dict3->userdef = g_new0(UserDefOne, 1);
     udnp->dict1->dict3->userdef->integer = 43;
     udnp->dict1->dict3->userdef->string = strdup("test_string");
@@ -243,7 +242,7 @@ static void nested_struct_compare(UserDefTwo *udnp1, UserDefTwo *udnp2)
                     udnp2->dict1->dict2->userdef->string);
     g_assert_cmpstr(udnp1->dict1->dict2->string, ==,
                     udnp2->dict1->dict2->string);
-    g_assert(udnp1->dict1->has_dict3 == udnp2->dict1->has_dict3);
+    g_assert(!udnp1->dict1->dict3 == !udnp2->dict1->dict3);
     g_assert_cmpint(udnp1->dict1->dict3->userdef->integer, ==,
                     udnp2->dict1->dict3->userdef->integer);
     g_assert_cmpstr(udnp1->dict1->dict3->userdef->string, ==,
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 58b00982ea..ae09c38103 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -767,7 +767,6 @@ def need_has(self):
             'qapi/char.json',
             'qapi/crypto.json',
             'qapi/dump.json',
-            'qapi/introspect.json',
             'qapi/job.json',
             'qapi/machine.json',
             'qapi/machine-target.json',
@@ -785,8 +784,7 @@ def need_has(self):
             'qapi/transaction.json',
             'qapi/ui.json',
             'qapi/virtio.json',
-            'qga/qapi-schema.json',
-            'tests/qapi-schema/qapi-schema-test.json']
+            'qga/qapi-schema.json']
         if self.info and any(self.info.fname.endswith(mod)
                              for mod in opt_out):
             return self.optional
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 06/30] qapi acpi: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (4 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 05/30] qapi tests: Elide " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 07/30] qapi audio: " Markus Armbruster
                   ` (24 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Michael S . Tsirkin, Igor Mammedov,
	Ani Sinha, Daniel P . Berrangé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/acpi.py.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Ani Sinha <ani@anisinha.ca>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 hw/acpi/core.c           | 14 +++++++-------
 hw/acpi/cpu.c            |  1 -
 hw/acpi/memory_hotplug.c |  1 -
 scripts/qapi/schema.py   |  1 -
 4 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 3e811bf03c..6da275c599 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -185,7 +185,7 @@ static void acpi_table_install(const char unsigned *blob, size_t bloblen,
     changed_fields = 0;
     ext_hdr->_length = cpu_to_le16(acpi_payload_size);
 
-    if (hdrs->has_sig) {
+    if (hdrs->sig) {
         strncpy(ext_hdr->sig, hdrs->sig, sizeof ext_hdr->sig);
         ++changed_fields;
     }
@@ -204,11 +204,11 @@ static void acpi_table_install(const char unsigned *blob, size_t bloblen,
 
     ext_hdr->checksum = 0;
 
-    if (hdrs->has_oem_id) {
+    if (hdrs->oem_id) {
         strncpy(ext_hdr->oem_id, hdrs->oem_id, sizeof ext_hdr->oem_id);
         ++changed_fields;
     }
-    if (hdrs->has_oem_table_id) {
+    if (hdrs->oem_table_id) {
         strncpy(ext_hdr->oem_table_id, hdrs->oem_table_id,
                 sizeof ext_hdr->oem_table_id);
         ++changed_fields;
@@ -217,7 +217,7 @@ static void acpi_table_install(const char unsigned *blob, size_t bloblen,
         ext_hdr->oem_revision = cpu_to_le32(hdrs->oem_rev);
         ++changed_fields;
     }
-    if (hdrs->has_asl_compiler_id) {
+    if (hdrs->asl_compiler_id) {
         strncpy(ext_hdr->asl_compiler_id, hdrs->asl_compiler_id,
                 sizeof ext_hdr->asl_compiler_id);
         ++changed_fields;
@@ -255,12 +255,12 @@ void acpi_table_add(const QemuOpts *opts, Error **errp)
     if (!hdrs) {
         goto out;
     }
-    if (hdrs->has_file == hdrs->has_data) {
+    if (!hdrs->file == !hdrs->data) {
         error_setg(errp, "'-acpitable' requires one of 'data' or 'file'");
         goto out;
     }
 
-    pathnames = g_strsplit(hdrs->has_file ? hdrs->file : hdrs->data, ":", 0);
+    pathnames = g_strsplit(hdrs->file ?: hdrs->data, ":", 0);
     if (pathnames == NULL || pathnames[0] == NULL) {
         error_setg(errp, "'-acpitable' requires at least one pathname");
         goto out;
@@ -297,7 +297,7 @@ void acpi_table_add(const QemuOpts *opts, Error **errp)
         close(fd);
     }
 
-    acpi_table_install(blob, bloblen, hdrs->has_file, hdrs, errp);
+    acpi_table_install(blob, bloblen, !!hdrs->file, hdrs, errp);
 
 out:
     g_free(blob);
diff --git a/hw/acpi/cpu.c b/hw/acpi/cpu.c
index 3646dbfe68..4e580959a2 100644
--- a/hw/acpi/cpu.c
+++ b/hw/acpi/cpu.c
@@ -35,7 +35,6 @@ static ACPIOSTInfo *acpi_cpu_device_status(int idx, AcpiCpuStatus *cdev)
         DeviceState *dev = DEVICE(cdev->cpu);
         if (dev->id) {
             info->device = g_strdup(dev->id);
-            info->has_device = true;
         }
     }
     return info;
diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index 0a7e89a13e..a7476330a8 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -44,7 +44,6 @@ static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev)
         DeviceState *dev = DEVICE(mdev->dimm);
         if (dev->id) {
             info->device = g_strdup(dev->id);
-            info->has_device = true;
         }
     }
     return info;
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index ae09c38103..ad7634de58 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/acpi.json',
             'qapi/audio.json',
             'qapi/block-core.json',
             'qapi/block-export.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 07/30] qapi audio: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (5 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 06/30] qapi acpi: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format Markus Armbruster
                   ` (23 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Gerd Hoffmann,
	Daniel P . Berrangé, Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/audio.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Additionally, helper get_str() loses its @has_dst parameter.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 audio/alsaaudio.c      |  2 +-
 audio/audio.c          |  6 ++----
 audio/audio_legacy.c   | 17 +++++++----------
 audio/ossaudio.c       |  8 +++-----
 audio/paaudio.c        | 12 ++++++------
 audio/sndioaudio.c     |  2 +-
 audio/wavaudio.c       |  2 +-
 scripts/qapi/schema.py |  1 -
 8 files changed, 21 insertions(+), 29 deletions(-)

diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c
index 7a2a94cd42..714bfb6453 100644
--- a/audio/alsaaudio.c
+++ b/audio/alsaaudio.c
@@ -449,7 +449,7 @@ static int alsa_open(bool in, struct alsa_params_req *req,
     snd_pcm_hw_params_t *hw_params;
     int err;
     unsigned int freq, nchannels;
-    const char *pcm_name = apdo->has_dev ? apdo->dev : "default";
+    const char *pcm_name = apdo->dev ?: "default";
     snd_pcm_uframes_t obt_buffer_size;
     const char *typ = in ? "ADC" : "DAC";
     snd_pcm_format_t obtfmt;
diff --git a/audio/audio.c b/audio/audio.c
index cc664271eb..52326c74af 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -2031,15 +2031,13 @@ void audio_create_pdos(Audiodev *dev)
     switch (dev->driver) {
 #define CASE(DRIVER, driver, pdo_name)                              \
     case AUDIODEV_DRIVER_##DRIVER:                                  \
-        if (!dev->u.driver.has_in) {                                \
+        if (!dev->u.driver.in) {                                    \
             dev->u.driver.in = g_malloc0(                           \
                 sizeof(Audiodev##pdo_name##PerDirectionOptions));   \
-            dev->u.driver.has_in = true;                            \
         }                                                           \
-        if (!dev->u.driver.has_out) {                               \
+        if (!dev->u.driver.out) {                                   \
             dev->u.driver.out = g_malloc0(                          \
                 sizeof(Audiodev##pdo_name##PerDirectionOptions));   \
-            dev->u.driver.has_out = true;                           \
         }                                                           \
         break
 
diff --git a/audio/audio_legacy.c b/audio/audio_legacy.c
index 595949f52c..18a89ffffb 100644
--- a/audio/audio_legacy.c
+++ b/audio/audio_legacy.c
@@ -62,15 +62,12 @@ static void get_int(const char *env, uint32_t *dst, bool *has_dst)
     }
 }
 
-static void get_str(const char *env, char **dst, bool *has_dst)
+static void get_str(const char *env, char **dst)
 {
     const char *val = getenv(env);
     if (val) {
-        if (*has_dst) {
-            g_free(*dst);
-        }
+        g_free(*dst);
         *dst = g_strdup(val);
-        *has_dst = true;
     }
 }
 
@@ -169,7 +166,7 @@ static void handle_alsa_per_direction(
     get_bool(buf, &apdo->try_poll, &apdo->has_try_poll);
 
     strcpy(buf + len, "DEV");
-    get_str(buf, &apdo->dev, &apdo->has_dev);
+    get_str(buf, &apdo->dev);
 
     strcpy(buf + len, "SIZE_IN_USEC");
     get_bool(buf, &size_in_usecs, &dummy);
@@ -235,7 +232,7 @@ static void handle_oss_per_direction(
     const char *dev_env)
 {
     get_bool(try_poll_env, &opdo->try_poll, &opdo->has_try_poll);
-    get_str(dev_env, &opdo->dev, &opdo->has_dev);
+    get_str(dev_env, &opdo->dev);
 
     get_bytes_to_usecs("QEMU_OSS_FRAGSIZE",
                        &opdo->buffer_length, &opdo->has_buffer_length,
@@ -261,7 +258,7 @@ static void handle_oss(Audiodev *dev)
 static void handle_pa_per_direction(
     AudiodevPaPerDirectionOptions *ppdo, const char *env)
 {
-    get_str(env, &ppdo->name, &ppdo->has_name);
+    get_str(env, &ppdo->name);
 }
 
 static void handle_pa(Audiodev *dev)
@@ -278,7 +275,7 @@ static void handle_pa(Audiodev *dev)
         &dev->u.pa.out->has_buffer_length,
         qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.out));
 
-    get_str("QEMU_PA_SERVER", &dev->u.pa.server, &dev->u.pa.has_server);
+    get_str("QEMU_PA_SERVER", &dev->u.pa.server);
 }
 
 /* SDL */
@@ -299,7 +296,7 @@ static void handle_wav(Audiodev *dev)
             &dev->u.wav.out->has_format);
     get_int("QEMU_WAV_DAC_FIXED_CHANNELS",
             &dev->u.wav.out->channels, &dev->u.wav.out->has_channels);
-    get_str("QEMU_WAV_PATH", &dev->u.wav.path, &dev->u.wav.has_path);
+    get_str("QEMU_WAV_PATH", &dev->u.wav.path);
 }
 
 /* general */
diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index 8e075edb70..e8d732b612 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -252,7 +252,7 @@ static int oss_open(int in, struct oss_params *req, audsettings *as,
     audio_buf_info abinfo;
     int fmt, freq, nchannels;
     int setfragment = 1;
-    const char *dspname = opdo->has_dev ? opdo->dev : "/dev/dsp";
+    const char *dspname = opdo->dev ?: "/dev/dsp";
     const char *typ = in ? "ADC" : "DAC";
 #ifdef USE_DSP_POLICY
     int policy = oopts->has_dsp_policy ? oopts->dsp_policy : 5;
@@ -745,10 +745,8 @@ static void *oss_audio_init(Audiodev *dev)
     oss_init_per_direction(oopts->in);
     oss_init_per_direction(oopts->out);
 
-    if (access(oopts->in->has_dev ? oopts->in->dev : "/dev/dsp",
-               R_OK | W_OK) < 0 ||
-        access(oopts->out->has_dev ? oopts->out->dev : "/dev/dsp",
-               R_OK | W_OK) < 0) {
+    if (access(oopts->in->dev ?: "/dev/dsp", R_OK | W_OK) < 0 ||
+        access(oopts->out->dev ?: "/dev/dsp", R_OK | W_OK) < 0) {
         return NULL;
     }
     return dev;
diff --git a/audio/paaudio.c b/audio/paaudio.c
index e91116f239..529b39daac 100644
--- a/audio/paaudio.c
+++ b/audio/paaudio.c
@@ -536,9 +536,9 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,
 
     pa->stream = qpa_simple_new (
         c,
-        ppdo->has_stream_name ? ppdo->stream_name : g->dev->id,
+        ppdo->stream_name ?: g->dev->id,
         PA_STREAM_PLAYBACK,
-        ppdo->has_name ? ppdo->name : NULL,
+        ppdo->name,
         &ss,
         &ba,                    /* buffering attributes */
         &error
@@ -585,9 +585,9 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
 
     pa->stream = qpa_simple_new (
         c,
-        ppdo->has_stream_name ? ppdo->stream_name : g->dev->id,
+        ppdo->stream_name ?: g->dev->id,
         PA_STREAM_RECORD,
-        ppdo->has_name ? ppdo->name : NULL,
+        ppdo->name,
         &ss,
         &ba,                    /* buffering attributes */
         &error
@@ -827,7 +827,7 @@ static void *qpa_audio_init(Audiodev *dev)
 
     assert(dev->driver == AUDIODEV_DRIVER_PA);
 
-    if (!popts->has_server) {
+    if (!popts->server) {
         char pidfile[64];
         char *runtime;
         struct stat st;
@@ -850,7 +850,7 @@ static void *qpa_audio_init(Audiodev *dev)
     }
 
     g = g_new0(paaudio, 1);
-    server = popts->has_server ? popts->server : NULL;
+    server = popts->server;
 
     g->dev = dev;
 
diff --git a/audio/sndioaudio.c b/audio/sndioaudio.c
index 7c45276d36..632b0e3825 100644
--- a/audio/sndioaudio.c
+++ b/audio/sndioaudio.c
@@ -333,7 +333,7 @@ static int sndio_init(SndioVoice *self,
     unsigned int nch;
     int i, nfds;
 
-    dev_name = opts->has_dev ? opts->dev : SIO_DEVANY;
+    dev_name = opts->dev ?: SIO_DEVANY;
     latency = opts->has_latency ? opts->latency : SNDIO_LATENCY_US;
 
     /* open the device in non-blocking mode */
diff --git a/audio/wavaudio.c b/audio/wavaudio.c
index 3e1d84db83..6445a2cb90 100644
--- a/audio/wavaudio.c
+++ b/audio/wavaudio.c
@@ -78,7 +78,7 @@ static int wav_init_out(HWVoiceOut *hw, struct audsettings *as,
     Audiodev *dev = drv_opaque;
     AudiodevWavOptions *wopts = &dev->u.wav;
     struct audsettings wav_as = audiodev_to_audsettings(dev->u.wav.out);
-    const char *wav_path = wopts->has_path ? wopts->path : "qemu.wav";
+    const char *wav_path = wopts->path ?: "qemu.wav";
 
     stereo = wav_as.nchannels == 2;
     switch (wav_as.fmt) {
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index ad7634de58..8db1c2caef 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/audio.json',
             'qapi/block-core.json',
             'qapi/block-export.json',
             'qapi/block.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (6 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 07/30] qapi audio: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 19:32   ` Eric Blake
  2022-11-04 16:06 ` [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg Markus Armbruster
                   ` (22 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Kevin Wolf, Hanna Reitz, qemu-block

drive-backup argument @format defaults to the format of the source
unless @mode is "existing".

drive_backup_prepare() implements this by copying the source's
@format_name to DriveBackup member @format.  It leaves @has_format
false, violating the "has_format == !!format" invariant.  Unclean.
Falls apart when we elide @has_format (commit after next): then QAPI
passes @format, which is a string constant, to g_free().  iotest 056
duly explodes.

Clean it up.  Since the value stored in member @format is not actually
used outside this function, use a local variable instead of modifying
the QAPI object.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Cc: qemu-block@nongnu.org
---
 blockdev.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 3f1dec6242..d6550e0dc8 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1686,6 +1686,7 @@ static void drive_backup_prepare(BlkActionState *common, Error **errp)
     BlockDriverState *source = NULL;
     AioContext *aio_context;
     AioContext *old_context;
+    const char *format;
     QDict *options;
     Error *local_err = NULL;
     int flags;
@@ -1717,9 +1718,9 @@ static void drive_backup_prepare(BlkActionState *common, Error **errp)
     /* Paired with .clean() */
     bdrv_drained_begin(bs);
 
-    if (!backup->has_format) {
-        backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ?
-                         NULL : (char *) bs->drv->format_name;
+    format = backup->format;
+    if (!format && backup->mode != NEW_IMAGE_MODE_EXISTING) {
+        format = bs->drv->format_name;
     }
 
     /* Early check to avoid creating target */
@@ -1758,19 +1759,19 @@ static void drive_backup_prepare(BlkActionState *common, Error **errp)
     }
 
     if (backup->mode != NEW_IMAGE_MODE_EXISTING) {
-        assert(backup->format);
+        assert(format);
         if (source) {
             /* Implicit filters should not appear in the filename */
             BlockDriverState *explicit_backing =
                 bdrv_skip_implicit_filters(source);
 
             bdrv_refresh_filename(explicit_backing);
-            bdrv_img_create(backup->target, backup->format,
+            bdrv_img_create(backup->target, format,
                             explicit_backing->filename,
                             explicit_backing->drv->format_name, NULL,
                             size, flags, false, &local_err);
         } else {
-            bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL,
+            bdrv_img_create(backup->target, format, NULL, NULL, NULL,
                             size, flags, false, &local_err);
         }
     }
@@ -1783,8 +1784,8 @@ static void drive_backup_prepare(BlkActionState *common, Error **errp)
     options = qdict_new();
     qdict_put_str(options, "discard", "unmap");
     qdict_put_str(options, "detect-zeroes", "unmap");
-    if (backup->format) {
-        qdict_put_str(options, "driver", backup->format);
+    if (format) {
+        qdict_put_str(options, "driver", format);
     }
 
     target_bs = bdrv_open(backup->target, NULL, options, flags, errp);
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (7 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 19:35   ` Eric Blake
  2022-11-08 14:21   ` Vladimir Sementsov-Ogievskiy
  2022-11-04 16:06 ` [PATCH v3 10/30] qapi block: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (21 subsequent siblings)
  30 siblings, 2 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Vladimir Sementsov-Ogievskiy, qemu-block

block-export-add argument @name defaults to the value of argument
@node-name.

nbd_export_create() implements this by copying @node_name to @name.
It leaves @has_node_name false, violating the "has_node_name ==
!!node_name" invariant.  Unclean.  Falls apart when we elide
@has_node_name (next commit): then QAPI frees the same value twice,
once for @node_name and once @name.  iotest 307 duly explodes.

Goes back to commit c62d24e906 "blockdev-nbd: Boxed argument type for
nbd-server-add" (v5.0.0).  Got moved from qmp_nbd_server_add() to
nbd_export_create() (commit 56ee86261e), then copied back (commit
b6076afcab).  Commit 8675cbd68b "nbd: Utilize QAPI_CLONE for type
conversion" (v5.2.0) cleaned up the copy in qmp_nbd_server_add()
noting

    Second, our assignment to arg->name is fishy: the generated QAPI code
    for qapi_free_NbdServerAddOptions does not visit arg->name if
    arg->has_name is false, but if it DID visit it, we would have
    introduced a double-free situation when arg is finally freed.

Exactly.  However, the copy in nbd_export_create() remained dirty.

Clean it up.  Since the value stored in member @name is not actually
used outside this function, use a local variable instead of modifying
the QAPI object.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Cc: qemu-block@nongnu.org
---
 nbd/server.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/nbd/server.c b/nbd/server.c
index ada16089f3..0570596312 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -1638,6 +1638,7 @@ static int nbd_export_create(BlockExport *blk_exp, BlockExportOptions *exp_args,
 {
     NBDExport *exp = container_of(blk_exp, NBDExport, common);
     BlockExportOptionsNbd *arg = &exp_args->u.nbd;
+    const char *name = arg->name ?: exp_args->node_name;
     BlockBackend *blk = blk_exp->blk;
     int64_t size;
     uint64_t perm, shared_perm;
@@ -1653,12 +1654,8 @@ static int nbd_export_create(BlockExport *blk_exp, BlockExportOptions *exp_args,
         return -EINVAL;
     }
 
-    if (!arg->has_name) {
-        arg->name = exp_args->node_name;
-    }
-
-    if (strlen(arg->name) > NBD_MAX_STRING_SIZE) {
-        error_setg(errp, "export name '%s' too long", arg->name);
+    if (strlen(name) > NBD_MAX_STRING_SIZE) {
+        error_setg(errp, "export name '%s' too long", name);
         return -EINVAL;
     }
 
@@ -1667,8 +1664,8 @@ static int nbd_export_create(BlockExport *blk_exp, BlockExportOptions *exp_args,
         return -EINVAL;
     }
 
-    if (nbd_export_find(arg->name)) {
-        error_setg(errp, "NBD server already has export named '%s'", arg->name);
+    if (nbd_export_find(name)) {
+        error_setg(errp, "NBD server already has export named '%s'", name);
         return -EEXIST;
     }
 
@@ -1688,7 +1685,7 @@ static int nbd_export_create(BlockExport *blk_exp, BlockExportOptions *exp_args,
     }
 
     QTAILQ_INIT(&exp->clients);
-    exp->name = g_strdup(arg->name);
+    exp->name = g_strdup(name);
     exp->description = g_strdup(arg->description);
     exp->nbdflags = (NBD_FLAG_HAS_FLAGS | NBD_FLAG_SEND_FLUSH |
                      NBD_FLAG_SEND_FUA | NBD_FLAG_SEND_CACHE);
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 10/30] qapi block: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (8 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 11/30] qapi chardev: " Markus Armbruster
                   ` (20 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Kevin Wolf, Hanna Reitz, qemu-block

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/block*.json.

Said commit explains the transformation in more detail.

There is one instance of the invariant violation mentioned there:
qcow2_signal_corruption() passes false, "" when node_name is an empty
string.  Take care to pass NULL then.

The previous two commits cleaned up two more.

Additionally, helper bdrv_latency_histogram_stats() loses its output
parameters and returns a value instead.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 block/block-backend.c          |   2 +-
 block/copy-before-write.c      |   2 +-
 block/dirty-bitmap.c           |   1 -
 block/export/export.c          |   2 +-
 block/export/vduse-blk.c       |   3 +-
 block/gluster.c                |   3 -
 block/monitor/block-hmp-cmds.c |  48 ++++------
 block/qapi-sysemu.c            |  73 +++++----------
 block/qapi.c                   |  62 +++++--------
 block/qcow.c                   |  10 +-
 block/qcow2.c                  |  18 ++--
 block/qed.c                    |   2 +-
 block/quorum.c                 |   2 +-
 block/rbd.c                    |  15 +--
 block/ssh.c                    |   2 +-
 blockdev-nbd.c                 |   9 +-
 blockdev.c                     | 164 +++++++++++++--------------------
 blockjob.c                     |   2 -
 monitor/hmp-cmds.c             |   3 +-
 qemu-img.c                     |  13 ++-
 qemu-nbd.c                     |   2 -
 scripts/qapi/schema.py         |   3 -
 22 files changed, 167 insertions(+), 274 deletions(-)

diff --git a/block/block-backend.c b/block/block-backend.c
index c0c7d56c8d..4c9aaec14a 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1859,7 +1859,7 @@ static void send_qmp_error_event(BlockBackend *blk,
     BlockDriverState *bs = blk_bs(blk);
 
     optype = is_read ? IO_OPERATION_TYPE_READ : IO_OPERATION_TYPE_WRITE;
-    qapi_event_send_block_io_error(blk_name(blk), !!bs,
+    qapi_event_send_block_io_error(blk_name(blk),
                                    bs ? bdrv_get_node_name(bs) : NULL, optype,
                                    action, blk_iostatus_is_enabled(blk),
                                    error == ENOSPC, strerror(error));
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 4abaa7339e..b28ae25ec1 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -432,7 +432,7 @@ static int cbw_open(BlockDriverState *bs, QDict *options, int flags,
         return -EINVAL;
     }
 
-    if (opts->has_bitmap) {
+    if (opts->bitmap) {
         bitmap = block_dirty_bitmap_lookup(opts->bitmap->node,
                                            opts->bitmap->name, NULL, errp);
         if (!bitmap) {
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index bf3dc0512a..9c39550698 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -541,7 +541,6 @@ BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs)
 
         info->count = bdrv_get_dirty_count(bm);
         info->granularity = bdrv_dirty_bitmap_granularity(bm);
-        info->has_name = !!bm->name;
         info->name = g_strdup(bm->name);
         info->recording = bdrv_dirty_bitmap_recording(bm);
         info->busy = bdrv_dirty_bitmap_busy(bm);
diff --git a/block/export/export.c b/block/export/export.c
index 7cc0c25c1c..28a91c9c42 100644
--- a/block/export/export.c
+++ b/block/export/export.c
@@ -114,7 +114,7 @@ BlockExport *blk_exp_add(BlockExportOptions *export, Error **errp)
     ctx = bdrv_get_aio_context(bs);
     aio_context_acquire(ctx);
 
-    if (export->has_iothread) {
+    if (export->iothread) {
         IOThread *iothread;
         AioContext *new_ctx;
         Error **set_context_errp;
diff --git a/block/export/vduse-blk.c b/block/export/vduse-blk.c
index f101c24c3f..350d6fdaf0 100644
--- a/block/export/vduse-blk.c
+++ b/block/export/vduse-blk.c
@@ -265,8 +265,7 @@ static int vduse_blk_exp_create(BlockExport *exp, BlockExportOptions *opts,
     }
     vblk_exp->num_queues = num_queues;
     vblk_exp->handler.blk = exp->blk;
-    vblk_exp->handler.serial = g_strdup(vblk_opts->has_serial ?
-                                        vblk_opts->serial : "");
+    vblk_exp->handler.serial = g_strdup(vblk_opts->serial ?: "");
     vblk_exp->handler.logical_block_size = logical_block_size;
     vblk_exp->handler.writable = opts->writable;
 
diff --git a/block/gluster.c b/block/gluster.c
index 7c90f7ba4b..7efc296399 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -830,7 +830,6 @@ static int qemu_gluster_open(BlockDriverState *bs,  QDict *options,
     s->logfile = g_strdup(logfile ? logfile : GLUSTER_LOGFILE_DEFAULT);
 
     gconf->logfile = g_strdup(s->logfile);
-    gconf->has_logfile = true;
 
     s->glfs = qemu_gluster_init(gconf, filename, options, errp);
     if (!s->glfs) {
@@ -917,7 +916,6 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
     gconf->debug = s->debug;
     gconf->has_debug = true;
     gconf->logfile = g_strdup(s->logfile);
-    gconf->has_logfile = true;
 
     /*
      * If 'state->bs->exact_filename' is empty, 'state->options' should contain
@@ -1162,7 +1160,6 @@ static int coroutine_fn qemu_gluster_co_create_opts(BlockDriver *drv,
     if (!gconf->logfile) {
         gconf->logfile = g_strdup(GLUSTER_LOGFILE_DEFAULT);
     }
-    gconf->has_logfile = true;
 
     ret = qemu_gluster_parse(gconf, filename, NULL, errp);
     if (ret < 0) {
diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index b6135e9bfe..0ff7c84039 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -241,7 +241,6 @@ void hmp_drive_mirror(Monitor *mon, const QDict *qdict)
     DriveMirror mirror = {
         .device = (char *)qdict_get_str(qdict, "device"),
         .target = (char *)filename,
-        .has_format = !!format,
         .format = (char *)format,
         .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
         .has_mode = true,
@@ -270,7 +269,6 @@ void hmp_drive_backup(Monitor *mon, const QDict *qdict)
     DriveBackup backup = {
         .device = (char *)device,
         .target = (char *)filename,
-        .has_format = !!format,
         .format = (char *)format,
         .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
         .has_mode = true,
@@ -360,9 +358,7 @@ void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict)
     }
 
     mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS;
-    qmp_blockdev_snapshot_sync(true, device, false, NULL,
-                               filename, false, NULL,
-                               !!format, format,
+    qmp_blockdev_snapshot_sync(device, NULL, filename, NULL, format,
                                true, mode, &err);
 end:
     hmp_handle_error(mon, err);
@@ -385,8 +381,7 @@ void hmp_snapshot_delete_blkdev_internal(Monitor *mon, const QDict *qdict)
     const char *id = qdict_get_try_str(qdict, "id");
     Error *err = NULL;
 
-    qmp_blockdev_snapshot_delete_internal_sync(device, !!id, id,
-                                               true, name, &err);
+    qmp_blockdev_snapshot_delete_internal_sync(device, id, name, &err);
     hmp_handle_error(mon, err);
 }
 
@@ -427,7 +422,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict)
     block_list = qmp_query_block(NULL);
 
     for (info = block_list; info; info = info->next) {
-        if (!info->value->has_inserted) {
+        if (!info->value->inserted) {
             continue;
         }
 
@@ -460,7 +455,6 @@ void hmp_nbd_server_add(Monitor *mon, const QDict *qdict)
 
     NbdServerAddOptions export = {
         .device         = (char *) device,
-        .has_name       = !!name,
         .name           = (char *) name,
         .has_writable   = true,
         .writable       = writable,
@@ -495,7 +489,7 @@ void coroutine_fn hmp_block_resize(Monitor *mon, const QDict *qdict)
     int64_t size = qdict_get_int(qdict, "size");
     Error *err = NULL;
 
-    qmp_block_resize(true, device, false, NULL, size, &err);
+    qmp_block_resize(device, NULL, size, &err);
     hmp_handle_error(mon, err);
 }
 
@@ -506,11 +500,10 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
     const char *base = qdict_get_try_str(qdict, "base");
     int64_t speed = qdict_get_try_int(qdict, "speed", 0);
 
-    qmp_block_stream(true, device, device, base != NULL, base, false, NULL,
-                     false, NULL, false, NULL,
-                     qdict_haskey(qdict, "speed"), speed, true,
-                     BLOCKDEV_ON_ERROR_REPORT, false, NULL, false, false, false,
-                     false, &error);
+    qmp_block_stream(device, device, base, NULL, NULL, NULL,
+                     qdict_haskey(qdict, "speed"), speed,
+                     true, BLOCKDEV_ON_ERROR_REPORT, NULL,
+                     false, false, false, false, &error);
 
     hmp_handle_error(mon, error);
 }
@@ -534,10 +527,8 @@ void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict)
      * version has only one, so we must decide which one to pass.
      */
     if (blk_by_name(device)) {
-        throttle.has_device = true;
         throttle.device = device;
     } else {
-        throttle.has_id = true;
         throttle.id = device;
     }
 
@@ -551,7 +542,7 @@ void hmp_eject(Monitor *mon, const QDict *qdict)
     const char *device = qdict_get_str(qdict, "device");
     Error *err = NULL;
 
-    qmp_eject(true, device, false, NULL, true, force, &err);
+    qmp_eject(device, NULL, true, force, &err);
     hmp_handle_error(mon, err);
 }
 
@@ -635,18 +626,18 @@ static void print_block_info(Monitor *mon, BlockInfo *info,
 {
     ImageInfo *image_info;
 
-    assert(!info || !info->has_inserted || info->inserted == inserted);
+    assert(!info || !info->inserted || info->inserted == inserted);
 
     if (info && *info->device) {
         monitor_puts(mon, info->device);
-        if (inserted && inserted->has_node_name) {
+        if (inserted && inserted->node_name) {
             monitor_printf(mon, " (%s)", inserted->node_name);
         }
     } else {
         assert(info || inserted);
         monitor_puts(mon,
-                     inserted && inserted->has_node_name ? inserted->node_name
-                     : info && info->has_qdev ? info->qdev
+                     inserted && inserted->node_name ? inserted->node_name
+                     : info && info->qdev ? info->qdev
                      : "<anonymous>");
     }
 
@@ -661,7 +652,7 @@ static void print_block_info(Monitor *mon, BlockInfo *info,
     }
 
     if (info) {
-        if (info->has_qdev) {
+        if (info->qdev) {
             monitor_printf(mon, "    Attached to:      %s\n", info->qdev);
         }
         if (info->has_io_status && info->io_status != BLOCK_DEVICE_IO_STATUS_OK) {
@@ -686,7 +677,7 @@ static void print_block_info(Monitor *mon, BlockInfo *info,
                    inserted->cache->direct ? ", direct" : "",
                    inserted->cache->no_flush ? ", ignore flushes" : "");
 
-    if (inserted->has_backing_file) {
+    if (inserted->backing_file) {
         monitor_printf(mon,
                        "    Backing file:     %s "
                        "(chain depth: %" PRId64 ")\n",
@@ -735,7 +726,7 @@ static void print_block_info(Monitor *mon, BlockInfo *info,
         image_info = inserted->image;
         while (1) {
                 bdrv_image_info_dump(image_info);
-            if (image_info->has_backing_image) {
+            if (image_info->backing_image) {
                 image_info = image_info->backing_image;
             } else {
                 break;
@@ -769,8 +760,7 @@ void hmp_info_block(Monitor *mon, const QDict *qdict)
             monitor_printf(mon, "\n");
         }
 
-        print_block_info(mon, info->value, info->value->has_inserted
-                                           ? info->value->inserted : NULL,
+        print_block_info(mon, info->value, info->value->inserted,
                          verbose);
         printed = true;
     }
@@ -784,7 +774,7 @@ void hmp_info_block(Monitor *mon, const QDict *qdict)
     /* Print node information */
     blockdev_list = qmp_query_named_block_nodes(false, false, NULL);
     for (blockdev = blockdev_list; blockdev; blockdev = blockdev->next) {
-        assert(blockdev->value->has_node_name);
+        assert(blockdev->value->node_name);
         if (device && strcmp(device, blockdev->value->node_name)) {
             continue;
         }
@@ -805,7 +795,7 @@ void hmp_info_blockstats(Monitor *mon, const QDict *qdict)
     stats_list = qmp_query_blockstats(false, false, NULL);
 
     for (stats = stats_list; stats; stats = stats->next) {
-        if (!stats->value->has_device) {
+        if (!stats->value->device) {
             continue;
         }
 
diff --git a/block/qapi-sysemu.c b/block/qapi-sysemu.c
index 680c7ee342..0c7a1423de 100644
--- a/block/qapi-sysemu.c
+++ b/block/qapi-sysemu.c
@@ -116,8 +116,8 @@ static int do_open_tray(const char *blk_name, const char *qdev_id,
     return 0;
 }
 
-void qmp_blockdev_open_tray(bool has_device, const char *device,
-                            bool has_id, const char *id,
+void qmp_blockdev_open_tray(const char *device,
+                            const char *id,
                             bool has_force, bool force,
                             Error **errp)
 {
@@ -127,9 +127,7 @@ void qmp_blockdev_open_tray(bool has_device, const char *device,
     if (!has_force) {
         force = false;
     }
-    rc = do_open_tray(has_device ? device : NULL,
-                      has_id ? id : NULL,
-                      force, &local_err);
+    rc = do_open_tray(device, id, force, &local_err);
     if (rc && rc != -ENOSYS && rc != -EINPROGRESS) {
         error_propagate(errp, local_err);
         return;
@@ -137,16 +135,13 @@ void qmp_blockdev_open_tray(bool has_device, const char *device,
     error_free(local_err);
 }
 
-void qmp_blockdev_close_tray(bool has_device, const char *device,
-                             bool has_id, const char *id,
+void qmp_blockdev_close_tray(const char *device,
+                             const char *id,
                              Error **errp)
 {
     BlockBackend *blk;
     Error *local_err = NULL;
 
-    device = has_device ? device : NULL;
-    id = has_id ? id : NULL;
-
     blk = qmp_get_blk(device, id, errp);
     if (!blk) {
         return;
@@ -173,17 +168,14 @@ void qmp_blockdev_close_tray(bool has_device, const char *device,
     }
 }
 
-static void blockdev_remove_medium(bool has_device, const char *device,
-                                   bool has_id, const char *id, Error **errp)
+static void blockdev_remove_medium(const char *device, const char *id,
+                                   Error **errp)
 {
     BlockBackend *blk;
     BlockDriverState *bs;
     AioContext *aio_context;
     bool has_attached_device;
 
-    device = has_device ? device : NULL;
-    id = has_id ? id : NULL;
-
     blk = qmp_get_blk(device, id, errp);
     if (!blk) {
         return;
@@ -232,7 +224,7 @@ out:
 
 void qmp_blockdev_remove_medium(const char *id, Error **errp)
 {
-    blockdev_remove_medium(false, NULL, true, id, errp);
+    blockdev_remove_medium(NULL, id, errp);
 }
 
 static void qmp_blockdev_insert_anon_medium(BlockBackend *blk,
@@ -280,16 +272,13 @@ static void qmp_blockdev_insert_anon_medium(BlockBackend *blk,
     }
 }
 
-static void blockdev_insert_medium(bool has_device, const char *device,
-                                   bool has_id, const char *id,
+static void blockdev_insert_medium(const char *device, const char *id,
                                    const char *node_name, Error **errp)
 {
     BlockBackend *blk;
     BlockDriverState *bs;
 
-    blk = qmp_get_blk(has_device ? device : NULL,
-                      has_id ? id : NULL,
-                      errp);
+    blk = qmp_get_blk(device, id, errp);
     if (!blk) {
         return;
     }
@@ -311,13 +300,13 @@ static void blockdev_insert_medium(bool has_device, const char *device,
 void qmp_blockdev_insert_medium(const char *id, const char *node_name,
                                 Error **errp)
 {
-    blockdev_insert_medium(false, NULL, true, id, node_name, errp);
+    blockdev_insert_medium(NULL, id, node_name, errp);
 }
 
-void qmp_blockdev_change_medium(bool has_device, const char *device,
-                                bool has_id, const char *id,
+void qmp_blockdev_change_medium(const char *device,
+                                const char *id,
                                 const char *filename,
-                                bool has_format, const char *format,
+                                const char *format,
                                 bool has_force, bool force,
                                 bool has_read_only,
                                 BlockdevChangeReadOnlyMode read_only,
@@ -331,9 +320,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device,
     QDict *options = NULL;
     Error *err = NULL;
 
-    blk = qmp_get_blk(has_device ? device : NULL,
-                      has_id ? id : NULL,
-                      errp);
+    blk = qmp_get_blk(device, id, errp);
     if (!blk) {
         goto fail;
     }
@@ -370,7 +357,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device,
     detect_zeroes = blk_get_detect_zeroes_from_root_state(blk);
     qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off");
 
-    if (has_format) {
+    if (format) {
         qdict_put_str(options, "driver", format);
     }
 
@@ -379,9 +366,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device,
         goto fail;
     }
 
-    rc = do_open_tray(has_device ? device : NULL,
-                      has_id ? id : NULL,
-                      force, &err);
+    rc = do_open_tray(device, id, force, &err);
     if (rc && rc != -ENOSYS) {
         error_propagate(errp, err);
         goto fail;
@@ -389,7 +374,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device,
     error_free(err);
     err = NULL;
 
-    blockdev_remove_medium(has_device, device, has_id, id, &err);
+    blockdev_remove_medium(device, id, &err);
     if (err) {
         error_propagate(errp, err);
         goto fail;
@@ -401,7 +386,7 @@ void qmp_blockdev_change_medium(bool has_device, const char *device,
         goto fail;
     }
 
-    qmp_blockdev_close_tray(has_device, device, has_id, id, errp);
+    qmp_blockdev_close_tray(device, id, errp);
 
 fail:
     /* If the medium has been inserted, the device has its own reference, so
@@ -410,8 +395,7 @@ fail:
     bdrv_unref(medium_bs);
 }
 
-void qmp_eject(bool has_device, const char *device,
-               bool has_id, const char *id,
+void qmp_eject(const char *device, const char *id,
                bool has_force, bool force, Error **errp)
 {
     Error *local_err = NULL;
@@ -421,16 +405,14 @@ void qmp_eject(bool has_device, const char *device,
         force = false;
     }
 
-    rc = do_open_tray(has_device ? device : NULL,
-                      has_id ? id : NULL,
-                      force, &local_err);
+    rc = do_open_tray(device, id, force, &local_err);
     if (rc && rc != -ENOSYS) {
         error_propagate(errp, local_err);
         return;
     }
     error_free(local_err);
 
-    blockdev_remove_medium(has_device, device, has_id, id, errp);
+    blockdev_remove_medium(device, id, errp);
 }
 
 /* throttling disk I/O limits */
@@ -441,9 +423,7 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
     BlockBackend *blk;
     AioContext *aio_context;
 
-    blk = qmp_get_blk(arg->has_device ? arg->device : NULL,
-                      arg->has_id ? arg->id : NULL,
-                      errp);
+    blk = qmp_get_blk(arg->device, arg->id, errp);
     if (!blk) {
         return;
     }
@@ -516,11 +496,8 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
         /* Enable I/O limits if they're not enabled yet, otherwise
          * just update the throttling group. */
         if (!blk_get_public(blk)->throttle_group_member.throttle_state) {
-            blk_io_limits_enable(blk,
-                                 arg->has_group ? arg->group :
-                                 arg->has_device ? arg->device :
-                                 arg->id);
-        } else if (arg->has_group) {
+            blk_io_limits_enable(blk, arg->group ?: arg->device ?: arg->id);
+        } else if (arg->group) {
             blk_io_limits_update_group(blk, arg->group);
         }
         /* Set the new throttling configuration */
diff --git a/block/qapi.c b/block/qapi.c
index cf557e3aea..fea808425b 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -71,13 +71,11 @@ BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
     };
 
     if (bs->node_name[0]) {
-        info->has_node_name = true;
         info->node_name = g_strdup(bs->node_name);
     }
 
     backing = bdrv_cow_bs(bs);
     if (backing) {
-        info->has_backing_file = true;
         info->backing_file = g_strdup(backing->filename);
     }
 
@@ -139,7 +137,6 @@ BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
         info->has_iops_size = cfg.op_size;
         info->iops_size = cfg.op_size;
 
-        info->has_group = true;
         info->group =
             g_strdup(throttle_group_get_name(&blkp->throttle_group_member));
     }
@@ -170,7 +167,6 @@ BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
              */
             info->backing_file_depth++;
             bs0 = bdrv_filter_or_cow_bs(bs0);
-            (*p_image_info)->has_backing_image = true;
             p_image_info = &((*p_image_info)->backing_image);
         } else {
             break;
@@ -301,26 +297,21 @@ void bdrv_query_image_info(BlockDriverState *bs,
         qapi_free_ImageInfo(info);
         goto out;
     }
-    info->has_format_specific = info->format_specific != NULL;
-
     backing_filename = bs->backing_file;
     if (backing_filename[0] != '\0') {
         char *backing_filename2;
 
         info->backing_filename = g_strdup(backing_filename);
-        info->has_backing_filename = true;
         backing_filename2 = bdrv_get_full_backing_filename(bs, NULL);
 
         /* Always report the full_backing_filename if present, even if it's the
          * same as backing_filename. That they are same is useful info. */
         if (backing_filename2) {
             info->full_backing_filename = g_strdup(backing_filename2);
-            info->has_full_backing_filename = true;
         }
 
         if (bs->backing_format[0]) {
             info->backing_filename_format = g_strdup(bs->backing_format);
-            info->has_backing_filename_format = true;
         }
         g_free(backing_filename2);
     }
@@ -367,7 +358,6 @@ static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
 
     qdev = blk_get_attached_dev_id(blk);
     if (qdev && *qdev) {
-        info->has_qdev = true;
         info->qdev = qdev;
     } else {
         g_free(qdev);
@@ -384,7 +374,6 @@ static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
     }
 
     if (bs && bs->drv) {
-        info->has_inserted = true;
         info->inserted = bdrv_block_device_info(blk, bs, false, errp);
         if (info->inserted == NULL) {
             goto err;
@@ -411,23 +400,26 @@ static uint64List *uint64_list(uint64_t *list, int size)
     return out_list;
 }
 
-static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist,
-                                         bool *not_null,
-                                         BlockLatencyHistogramInfo **info)
+static BlockLatencyHistogramInfo *
+bdrv_latency_histogram_stats(BlockLatencyHistogram *hist)
 {
-    *not_null = hist->bins != NULL;
-    if (*not_null) {
-        *info = g_new0(BlockLatencyHistogramInfo, 1);
+    BlockLatencyHistogramInfo *info;
 
-        (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1);
-        (*info)->bins = uint64_list(hist->bins, hist->nbins);
+    if (!hist->bins) {
+        return NULL;
     }
+
+    info = g_new0(BlockLatencyHistogramInfo, 1);
+    info->boundaries = uint64_list(hist->boundaries, hist->nbins - 1);
+    info->bins = uint64_list(hist->bins, hist->nbins);
+    return info;
 }
 
 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk)
 {
     BlockAcctStats *stats = blk_get_stats(blk);
     BlockAcctTimedStats *ts = NULL;
+    BlockLatencyHistogram *hgram;
 
     ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ];
     ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE];
@@ -493,15 +485,13 @@ static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk)
         QAPI_LIST_PREPEND(ds->timed_stats, dev_stats);
     }
 
-    bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_READ],
-                                 &ds->has_rd_latency_histogram,
-                                 &ds->rd_latency_histogram);
-    bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_WRITE],
-                                 &ds->has_wr_latency_histogram,
-                                 &ds->wr_latency_histogram);
-    bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_FLUSH],
-                                 &ds->has_flush_latency_histogram,
-                                 &ds->flush_latency_histogram);
+    hgram = stats->latency_histogram;
+    ds->rd_latency_histogram
+        = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_READ]);
+    ds->wr_latency_histogram
+        = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_WRITE]);
+    ds->flush_latency_histogram
+        = bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_FLUSH]);
 }
 
 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
@@ -526,16 +516,12 @@ static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
     }
 
     if (bdrv_get_node_name(bs)[0]) {
-        s->has_node_name = true;
         s->node_name = g_strdup(bdrv_get_node_name(bs));
     }
 
     s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset);
 
     s->driver_specific = bdrv_get_specific_stats(bs);
-    if (s->driver_specific) {
-        s->has_driver_specific = true;
-    }
 
     parent_child = bdrv_primary_child(bs);
     if (!parent_child ||
@@ -564,7 +550,6 @@ static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
         }
     }
     if (parent_child) {
-        s->has_parent = true;
         s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level);
     }
 
@@ -575,7 +560,6 @@ static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
          * compatibility to when we put bs0->backing here, which might
          * be either)
          */
-        s->has_backing = true;
         s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level);
     }
 
@@ -640,12 +624,10 @@ BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
 
             aio_context_acquire(ctx);
             s = bdrv_query_bds_stats(blk_bs(blk), true);
-            s->has_device = true;
             s->device = g_strdup(blk_name(blk));
 
             qdev = blk_get_attached_dev_id(blk);
             if (qdev && *qdev) {
-                s->has_qdev = true;
                 s->qdev = qdev;
             } else {
                 g_free(qdev);
@@ -822,16 +804,16 @@ void bdrv_image_info_dump(ImageInfo *info)
         qemu_printf("cleanly shut down: no\n");
     }
 
-    if (info->has_backing_filename) {
+    if (info->backing_filename) {
         qemu_printf("backing file: %s", info->backing_filename);
-        if (!info->has_full_backing_filename) {
+        if (!info->full_backing_filename) {
             qemu_printf(" (cannot determine actual path)");
         } else if (strcmp(info->backing_filename,
                           info->full_backing_filename) != 0) {
             qemu_printf(" (actual path: %s)", info->full_backing_filename);
         }
         qemu_printf("\n");
-        if (info->has_backing_filename_format) {
+        if (info->backing_filename_format) {
             qemu_printf("backing file format: %s\n",
                         info->backing_filename_format);
         }
@@ -865,7 +847,7 @@ void bdrv_image_info_dump(ImageInfo *info)
         }
     }
 
-    if (info->has_format_specific) {
+    if (info->format_specific) {
         qemu_printf("Format specific information:\n");
         bdrv_image_info_specific_dump(info->format_specific);
     }
diff --git a/block/qcow.c b/block/qcow.c
index daa38839ab..8bffc41531 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -825,7 +825,7 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
         return -EINVAL;
     }
 
-    if (qcow_opts->has_encrypt &&
+    if (qcow_opts->encrypt &&
         qcow_opts->encrypt->format != Q_CRYPTO_BLOCK_FORMAT_QCOW)
     {
         error_setg(errp, "Unsupported encryption format");
@@ -853,7 +853,7 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
     header.size = cpu_to_be64(total_size);
     header_size = sizeof(header);
     backing_filename_len = 0;
-    if (qcow_opts->has_backing_file) {
+    if (qcow_opts->backing_file) {
         if (strcmp(qcow_opts->backing_file, "fat:")) {
             header.backing_file_offset = cpu_to_be64(header_size);
             backing_filename_len = strlen(qcow_opts->backing_file);
@@ -861,7 +861,7 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
             header_size += backing_filename_len;
         } else {
             /* special backing file for vvfat */
-            qcow_opts->has_backing_file = false;
+            qcow_opts->backing_file = NULL;
         }
         header.cluster_bits = 9; /* 512 byte cluster to avoid copying
                                     unmodified sectors */
@@ -876,7 +876,7 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
 
     header.l1_table_offset = cpu_to_be64(header_size);
 
-    if (qcow_opts->has_encrypt) {
+    if (qcow_opts->encrypt) {
         header.crypt_method = cpu_to_be32(QCOW_CRYPT_AES);
 
         crypto = qcrypto_block_create(qcow_opts->encrypt, "encrypt.",
@@ -895,7 +895,7 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
         goto exit;
     }
 
-    if (qcow_opts->has_backing_file) {
+    if (qcow_opts->backing_file) {
         ret = blk_co_pwrite(qcow_blk, sizeof(header), backing_filename_len,
                             qcow_opts->backing_file, 0);
         if (ret < 0) {
diff --git a/block/qcow2.c b/block/qcow2.c
index 4d6666d3ff..941782a011 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3508,7 +3508,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
     if (!qcow2_opts->has_preallocation) {
         qcow2_opts->preallocation = PREALLOC_MODE_OFF;
     }
-    if (qcow2_opts->has_backing_file &&
+    if (qcow2_opts->backing_file &&
         qcow2_opts->preallocation != PREALLOC_MODE_OFF &&
         !qcow2_opts->extended_l2)
     {
@@ -3517,7 +3517,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
         ret = -EINVAL;
         goto out;
     }
-    if (qcow2_opts->has_backing_fmt && !qcow2_opts->has_backing_file) {
+    if (qcow2_opts->has_backing_fmt && !qcow2_opts->backing_file) {
         error_setg(errp, "Backing format cannot be used without backing file");
         ret = -EINVAL;
         goto out;
@@ -3558,7 +3558,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
         ret = -EINVAL;
         goto out;
     }
-    if (qcow2_opts->data_file_raw && qcow2_opts->has_backing_file) {
+    if (qcow2_opts->data_file_raw && qcow2_opts->backing_file) {
         error_setg(errp, "Backing file and data-file-raw cannot be used at "
                    "the same time");
         ret = -EINVAL;
@@ -3584,7 +3584,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
          * backing file when specifying data_file_raw is an error
          * anyway.
          */
-        assert(!qcow2_opts->has_backing_file);
+        assert(!qcow2_opts->backing_file);
     }
 
     if (qcow2_opts->data_file) {
@@ -3752,7 +3752,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
     }
 
     /* Want a backing file? There you go. */
-    if (qcow2_opts->has_backing_file) {
+    if (qcow2_opts->backing_file) {
         const char *backing_format = NULL;
 
         if (qcow2_opts->has_backing_fmt) {
@@ -3770,7 +3770,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
     }
 
     /* Want encryption? There you go. */
-    if (qcow2_opts->has_encrypt) {
+    if (qcow2_opts->encrypt) {
         ret = qcow2_set_up_encryption(blk_bs(blk), qcow2_opts->encrypt, errp);
         if (ret < 0) {
             goto out;
@@ -5195,7 +5195,6 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs,
             .refcount_bits      = s->refcount_bits,
             .has_bitmaps        = !!bitmaps,
             .bitmaps            = bitmaps,
-            .has_data_file      = !!s->image_data_file,
             .data_file          = g_strdup(s->image_data_file),
             .has_data_file_raw  = has_data_file(bs),
             .data_file_raw      = data_file_is_raw(bs),
@@ -5226,7 +5225,6 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs,
         memset(&encrypt_info->u, 0, sizeof(encrypt_info->u));
         qapi_free_QCryptoBlockInfo(encrypt_info);
 
-        spec_info->u.qcow2.data->has_encrypt = true;
         spec_info->u.qcow2.data->encrypt = qencrypt;
     }
 
@@ -5846,7 +5844,7 @@ static int coroutine_fn qcow2_co_amend(BlockDriverState *bs,
     BDRVQcow2State *s = bs->opaque;
     int ret = 0;
 
-    if (qopts->has_encrypt) {
+    if (qopts->encrypt) {
         if (!s->crypto) {
             error_setg(errp, "image is not encrypted, can't amend");
             return -EOPNOTSUPP;
@@ -5911,7 +5909,7 @@ void qcow2_signal_corruption(BlockDriverState *bs, bool fatal, int64_t offset,
 
     node_name = bdrv_get_node_name(bs);
     qapi_event_send_block_image_corrupted(bdrv_get_device_name(bs),
-                                          *node_name != '\0', node_name,
+                                          *node_name ? node_name : NULL,
                                           message, offset >= 0, offset,
                                           size >= 0, size,
                                           fatal);
diff --git a/block/qed.c b/block/qed.c
index 2f36ad342c..0ab159b468 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -698,7 +698,7 @@ static int coroutine_fn bdrv_qed_co_create(BlockdevCreateOptions *opts,
         goto out;
     }
 
-    if (qed_opts->has_backing_file) {
+    if (qed_opts->backing_file) {
         header.features |= QED_F_BACKING_FILE;
         header.backing_filename_offset = sizeof(le_header);
         header.backing_filename_size = strlen(qed_opts->backing_file);
diff --git a/block/quorum.c b/block/quorum.c
index f9e6539ceb..7f21c03f1f 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -202,7 +202,7 @@ static void quorum_report_bad(QuorumOpType type, uint64_t offset,
         msg = strerror(-ret);
     }
 
-    qapi_event_send_quorum_report_bad(type, !!msg, msg, node_name, start_sector,
+    qapi_event_send_quorum_report_bad(type, msg, node_name, start_sector,
                                       end_sector - start_sector);
 }
 
diff --git a/block/rbd.c b/block/rbd.c
index f826410f40..d809b8e0a3 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -536,7 +536,7 @@ static int qemu_rbd_do_create(BlockdevCreateOptions *options,
     int ret;
 
     assert(options->driver == BLOCKDEV_DRIVER_RBD);
-    if (opts->location->has_snapshot) {
+    if (opts->location->snapshot) {
         error_setg(errp, "Can't use snapshot name for image creation");
         return -EINVAL;
     }
@@ -574,7 +574,7 @@ static int qemu_rbd_do_create(BlockdevCreateOptions *options,
     }
 
 #ifdef LIBRBD_SUPPORTS_ENCRYPTION
-    if (opts->has_encrypt) {
+    if (opts->encrypt) {
         rbd_image_t image;
 
         ret = rbd_open(io_ctx, opts->location->image, &image, NULL);
@@ -686,7 +686,6 @@ static int coroutine_fn qemu_rbd_co_create_opts(BlockDriver *drv,
         goto exit;
     }
     rbd_opts->encrypt     = encrypt;
-    rbd_opts->has_encrypt = !!encrypt;
 
     /*
      * Caution: while qdict_get_try_str() is fine, getting non-string
@@ -697,11 +696,8 @@ static int coroutine_fn qemu_rbd_co_create_opts(BlockDriver *drv,
     loc = rbd_opts->location;
     loc->pool        = g_strdup(qdict_get_try_str(options, "pool"));
     loc->conf        = g_strdup(qdict_get_try_str(options, "conf"));
-    loc->has_conf    = !!loc->conf;
     loc->user        = g_strdup(qdict_get_try_str(options, "user"));
-    loc->has_user    = !!loc->user;
     loc->q_namespace = g_strdup(qdict_get_try_str(options, "namespace"));
-    loc->has_q_namespace = !!loc->q_namespace;
     loc->image       = g_strdup(qdict_get_try_str(options, "image"));
     keypairs         = qdict_get_try_str(options, "=keyvalue-pairs");
 
@@ -767,7 +763,6 @@ static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx,
             return -EINVAL;
         }
         opts->key_secret = g_strdup(secretid);
-        opts->has_key_secret = true;
     }
 
     mon_host = qemu_rbd_mon_host(opts, &local_err);
@@ -785,7 +780,7 @@ static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx,
 
     /* try default location when conf=NULL, but ignore failure */
     r = rados_conf_read_file(*cluster, opts->conf);
-    if (opts->has_conf && r < 0) {
+    if (opts->conf && r < 0) {
         error_setg_errno(errp, -r, "error reading conf file %s", opts->conf);
         goto failed_shutdown;
     }
@@ -833,7 +828,7 @@ static int qemu_rbd_connect(rados_t *cluster, rados_ioctx_t *io_ctx,
     }
 
 #ifdef HAVE_RBD_NAMESPACE_EXISTS
-    if (opts->has_q_namespace && strlen(opts->q_namespace) > 0) {
+    if (opts->q_namespace && strlen(opts->q_namespace) > 0) {
         bool exists;
 
         r = rbd_namespace_exists(*io_ctx, opts->q_namespace, &exists);
@@ -991,7 +986,7 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
         goto failed_open;
     }
 
-    if (opts->has_encrypt) {
+    if (opts->encrypt) {
 #ifdef LIBRBD_SUPPORTS_ENCRYPTION
         r = qemu_rbd_encryption_load(s->image, opts->encrypt, errp);
         if (r < 0) {
diff --git a/block/ssh.c b/block/ssh.c
index 04726d4ecb..8508710f2f 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -643,7 +643,7 @@ static int connect_to_ssh(BDRVSSHState *s, BlockdevOptionsSsh *opts,
     unsigned int port = 0;
     int new_sock = -1;
 
-    if (opts->has_user) {
+    if (opts->user) {
         s->user = g_strdup(opts->user);
     } else {
         s->user = g_strdup(g_get_user_name());
diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 012256bb02..213012435f 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -173,8 +173,8 @@ void nbd_server_start_options(NbdServerOptions *arg, Error **errp)
 }
 
 void qmp_nbd_server_start(SocketAddressLegacy *addr,
-                          bool has_tls_creds, const char *tls_creds,
-                          bool has_tls_authz, const char *tls_authz,
+                          const char *tls_creds,
+                          const char *tls_authz,
                           bool has_max_connections, uint32_t max_connections,
                           Error **errp)
 {
@@ -200,8 +200,7 @@ void qmp_nbd_server_add(NbdServerAddOptions *arg, Error **errp)
      * block-export-add would default to the node-name, but we may have to use
      * the device name as a default here for compatibility.
      */
-    if (!arg->has_name) {
-        arg->has_name = true;
+    if (!arg->name) {
         arg->name = g_strdup(arg->device);
     }
 
@@ -215,7 +214,7 @@ void qmp_nbd_server_add(NbdServerAddOptions *arg, Error **errp)
     };
     QAPI_CLONE_MEMBERS(BlockExportOptionsNbdBase, &export_opts->u.nbd,
                        qapi_NbdServerAddOptions_base(arg));
-    if (arg->has_bitmap) {
+    if (arg->bitmap) {
         BlockDirtyBitmapOrStr *el = g_new(BlockDirtyBitmapOrStr, 1);
 
         *el = (BlockDirtyBitmapOrStr) {
diff --git a/blockdev.c b/blockdev.c
index d6550e0dc8..59753400e9 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1051,23 +1051,17 @@ static void blockdev_do_action(TransactionAction *action, Error **errp)
     qmp_transaction(&list, false, NULL, errp);
 }
 
-void qmp_blockdev_snapshot_sync(bool has_device, const char *device,
-                                bool has_node_name, const char *node_name,
+void qmp_blockdev_snapshot_sync(const char *device, const char *node_name,
                                 const char *snapshot_file,
-                                bool has_snapshot_node_name,
                                 const char *snapshot_node_name,
-                                bool has_format, const char *format,
+                                const char *format,
                                 bool has_mode, NewImageMode mode, Error **errp)
 {
     BlockdevSnapshotSync snapshot = {
-        .has_device = has_device,
         .device = (char *) device,
-        .has_node_name = has_node_name,
         .node_name = (char *) node_name,
         .snapshot_file = (char *) snapshot_file,
-        .has_snapshot_node_name = has_snapshot_node_name,
         .snapshot_node_name = (char *) snapshot_node_name,
-        .has_format = has_format,
         .format = (char *) format,
         .has_mode = has_mode,
         .mode = mode,
@@ -1109,9 +1103,7 @@ void qmp_blockdev_snapshot_internal_sync(const char *device,
 }
 
 SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
-                                                         bool has_id,
                                                          const char *id,
-                                                         bool has_name,
                                                          const char *name,
                                                          Error **errp)
 {
@@ -1129,14 +1121,6 @@ SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
     aio_context = bdrv_get_aio_context(bs);
     aio_context_acquire(aio_context);
 
-    if (!has_id) {
-        id = NULL;
-    }
-
-    if (!has_name) {
-        name = NULL;
-    }
-
     if (!id && !name) {
         error_setg(errp, "Name or id must be provided");
         goto out_aio_context;
@@ -1450,8 +1434,8 @@ static void external_snapshot_prepare(BlkActionState *common,
     case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC:
         {
             BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data;
-            device = s->has_device ? s->device : NULL;
-            node_name = s->has_node_name ? s->node_name : NULL;
+            device = s->device;
+            node_name = s->node_name;
             new_image_file = s->snapshot_file;
             snapshot_ref = NULL;
         }
@@ -1495,10 +1479,9 @@ static void external_snapshot_prepare(BlkActionState *common,
 
     if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) {
         BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data;
-        const char *format = s->has_format ? s->format : "qcow2";
+        const char *format = s->format ?: "qcow2";
         enum NewImageMode mode;
-        const char *snapshot_node_name =
-            s->has_snapshot_node_name ? s->snapshot_node_name : NULL;
+        const char *snapshot_node_name = s->snapshot_node_name;
 
         if (node_name && !snapshot_node_name) {
             error_setg(errp, "New overlay node-name missing");
@@ -2412,8 +2395,7 @@ BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node,
     return ret;
 }
 
-void coroutine_fn qmp_block_resize(bool has_device, const char *device,
-                                   bool has_node_name, const char *node_name,
+void coroutine_fn qmp_block_resize(const char *device, const char *node_name,
                                    int64_t size, Error **errp)
 {
     Error *local_err = NULL;
@@ -2421,9 +2403,7 @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device,
     BlockDriverState *bs;
     AioContext *old_ctx;
 
-    bs = bdrv_lookup_bs(has_device ? device : NULL,
-                        has_node_name ? node_name : NULL,
-                        &local_err);
+    bs = bdrv_lookup_bs(device, node_name, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -2458,14 +2438,14 @@ void coroutine_fn qmp_block_resize(bool has_device, const char *device,
     bdrv_co_unlock(bs);
 }
 
-void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
-                      bool has_base, const char *base,
-                      bool has_base_node, const char *base_node,
-                      bool has_backing_file, const char *backing_file,
-                      bool has_bottom, const char *bottom,
+void qmp_block_stream(const char *job_id, const char *device,
+                      const char *base,
+                      const char *base_node,
+                      const char *backing_file,
+                      const char *bottom,
                       bool has_speed, int64_t speed,
                       bool has_on_error, BlockdevOnError on_error,
-                      bool has_filter_node_name, const char *filter_node_name,
+                      const char *filter_node_name,
                       bool has_auto_finalize, bool auto_finalize,
                       bool has_auto_dismiss, bool auto_dismiss,
                       Error **errp)
@@ -2477,19 +2457,19 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
     Error *local_err = NULL;
     int job_flags = JOB_DEFAULT;
 
-    if (has_base && has_base_node) {
+    if (base && base_node) {
         error_setg(errp, "'base' and 'base-node' cannot be specified "
                    "at the same time");
         return;
     }
 
-    if (has_base && has_bottom) {
+    if (base && bottom) {
         error_setg(errp, "'base' and 'bottom' cannot be specified "
                    "at the same time");
         return;
     }
 
-    if (has_bottom && has_base_node) {
+    if (bottom && base_node) {
         error_setg(errp, "'bottom' and 'base-node' cannot be specified "
                    "at the same time");
         return;
@@ -2507,7 +2487,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
     aio_context = bdrv_get_aio_context(bs);
     aio_context_acquire(aio_context);
 
-    if (has_base) {
+    if (base) {
         base_bs = bdrv_find_backing_image(bs, base);
         if (base_bs == NULL) {
             error_setg(errp, "Can't find '%s' in the backing chain", base);
@@ -2516,7 +2496,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         assert(bdrv_get_aio_context(base_bs) == aio_context);
     }
 
-    if (has_base_node) {
+    if (base_node) {
         base_bs = bdrv_lookup_bs(NULL, base_node, errp);
         if (!base_bs) {
             goto out;
@@ -2530,7 +2510,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         bdrv_refresh_filename(base_bs);
     }
 
-    if (has_bottom) {
+    if (bottom) {
         bottom_bs = bdrv_lookup_bs(NULL, bottom, errp);
         if (!bottom_bs) {
             goto out;
@@ -2555,7 +2535,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
     /*
      * Check for op blockers in the whole chain between bs and base (or bottom)
      */
-    iter_end = has_bottom ? bdrv_filter_or_cow_bs(bottom_bs) : base_bs;
+    iter_end = bottom ? bdrv_filter_or_cow_bs(bottom_bs) : base_bs;
     for (iter = bs; iter && iter != iter_end;
          iter = bdrv_filter_or_cow_bs(iter))
     {
@@ -2566,7 +2546,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
 
     /* if we are streaming the entire chain, the result will have no backing
      * file, and specifying one is therefore an error */
-    if (base_bs == NULL && has_backing_file) {
+    if (!base_bs && backing_file) {
         error_setg(errp, "backing file specified, but streaming the "
                          "entire chain");
         goto out;
@@ -2579,7 +2559,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         job_flags |= JOB_MANUAL_DISMISS;
     }
 
-    stream_start(has_job_id ? job_id : NULL, bs, base_bs, backing_file,
+    stream_start(job_id, bs, base_bs, backing_file,
                  bottom_bs, job_flags, has_speed ? speed : 0, on_error,
                  filter_node_name, &local_err);
     if (local_err) {
@@ -2593,15 +2573,15 @@ out:
     aio_context_release(aio_context);
 }
 
-void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
-                      bool has_base_node, const char *base_node,
-                      bool has_base, const char *base,
-                      bool has_top_node, const char *top_node,
-                      bool has_top, const char *top,
-                      bool has_backing_file, const char *backing_file,
+void qmp_block_commit(const char *job_id, const char *device,
+                      const char *base_node,
+                      const char *base,
+                      const char *top_node,
+                      const char *top,
+                      const char *backing_file,
                       bool has_speed, int64_t speed,
                       bool has_on_error, BlockdevOnError on_error,
-                      bool has_filter_node_name, const char *filter_node_name,
+                      const char *filter_node_name,
                       bool has_auto_finalize, bool auto_finalize,
                       bool has_auto_dismiss, bool auto_dismiss,
                       Error **errp)
@@ -2620,9 +2600,6 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
     if (!has_on_error) {
         on_error = BLOCKDEV_ON_ERROR_REPORT;
     }
-    if (!has_filter_node_name) {
-        filter_node_name = NULL;
-    }
     if (has_auto_finalize && !auto_finalize) {
         job_flags |= JOB_MANUAL_FINALIZE;
     }
@@ -2658,10 +2635,10 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
     /* default top_bs is the active layer */
     top_bs = bs;
 
-    if (has_top_node && has_top) {
+    if (top_node && top) {
         error_setg(errp, "'top-node' and 'top' are mutually exclusive");
         goto out;
-    } else if (has_top_node) {
+    } else if (top_node) {
         top_bs = bdrv_lookup_bs(NULL, top_node, errp);
         if (top_bs == NULL) {
             goto out;
@@ -2671,7 +2648,7 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
                        top_node);
             goto out;
         }
-    } else if (has_top && top) {
+    } else if (top) {
         /* This strcmp() is just a shortcut, there is no need to
          * refresh @bs's filename.  If it mismatches,
          * bdrv_find_backing_image() will do the refresh and may still
@@ -2688,10 +2665,10 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
 
     assert(bdrv_get_aio_context(top_bs) == aio_context);
 
-    if (has_base_node && has_base) {
+    if (base_node && base) {
         error_setg(errp, "'base-node' and 'base' are mutually exclusive");
         goto out;
-    } else if (has_base_node) {
+    } else if (base_node) {
         base_bs = bdrv_lookup_bs(NULL, base_node, errp);
         if (base_bs == NULL) {
             goto out;
@@ -2701,7 +2678,7 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
                        base_node);
             goto out;
         }
-    } else if (has_base && base) {
+    } else if (base) {
         base_bs = bdrv_find_backing_image(top_bs, base);
         if (base_bs == NULL) {
             error_setg(errp, "Can't find '%s' in the backing chain", base);
@@ -2743,7 +2720,7 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
     if (top_perm & BLK_PERM_WRITE ||
         bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs))
     {
-        if (has_backing_file) {
+        if (backing_file) {
             if (bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) {
                 error_setg(errp, "'backing-file' specified,"
                                  " but 'top' is the active layer");
@@ -2753,7 +2730,7 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
             }
             goto out;
         }
-        if (!has_job_id) {
+        if (!job_id) {
             /*
              * Emulate here what block_job_create() does, because it
              * is possible that @bs != @top_bs (the block job should
@@ -2769,8 +2746,8 @@ void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
         if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) {
             goto out;
         }
-        commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags,
-                     speed, on_error, has_backing_file ? backing_file : NULL,
+        commit_start(job_id, bs, base_bs, top_bs, job_flags,
+                     speed, on_error, backing_file,
                      filter_node_name, &local_err);
     }
     if (local_err != NULL) {
@@ -2803,9 +2780,6 @@ static BlockJob *do_backup_common(BackupCommon *backup,
     if (!backup->has_on_target_error) {
         backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT;
     }
-    if (!backup->has_job_id) {
-        backup->job_id = NULL;
-    }
     if (!backup->has_auto_finalize) {
         backup->auto_finalize = true;
     }
@@ -2831,7 +2805,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
     if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) ||
         (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) {
         /* done before desugaring 'incremental' to print the right message */
-        if (!backup->has_bitmap) {
+        if (!backup->bitmap) {
             error_setg(errp, "must provide a valid bitmap name for "
                        "'%s' sync mode", MirrorSyncMode_str(backup->sync));
             return NULL;
@@ -2852,7 +2826,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
         backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS;
     }
 
-    if (backup->has_bitmap) {
+    if (backup->bitmap) {
         bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap);
         if (!bmap) {
             error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap);
@@ -2885,7 +2859,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
         }
     }
 
-    if (!backup->has_bitmap && backup->has_bitmap_mode) {
+    if (!backup->bitmap && backup->has_bitmap_mode) {
         error_setg(errp, "Cannot specify bitmap sync mode without a bitmap");
         return NULL;
     }
@@ -2945,7 +2919,7 @@ void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp)
  **/
 static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
                                    BlockDriverState *target,
-                                   bool has_replaces, const char *replaces,
+                                   const char *replaces,
                                    enum MirrorSyncMode sync,
                                    BlockMirrorBackingMode backing_mode,
                                    bool zero_target,
@@ -2957,7 +2931,6 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
                                    bool has_on_target_error,
                                    BlockdevOnError on_target_error,
                                    bool has_unmap, bool unmap,
-                                   bool has_filter_node_name,
                                    const char *filter_node_name,
                                    bool has_copy_mode, MirrorCopyMode copy_mode,
                                    bool has_auto_finalize, bool auto_finalize,
@@ -2985,9 +2958,6 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
     if (!has_unmap) {
         unmap = true;
     }
-    if (!has_filter_node_name) {
-        filter_node_name = NULL;
-    }
     if (!has_copy_mode) {
         copy_mode = MIRROR_COPY_MODE_BACKGROUND;
     }
@@ -3020,16 +2990,15 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
         sync = MIRROR_SYNC_MODE_FULL;
     }
 
-    if (!has_replaces) {
+    if (!replaces) {
         /* We want to mirror from @bs, but keep implicit filters on top */
         unfiltered_bs = bdrv_skip_implicit_filters(bs);
         if (unfiltered_bs != bs) {
             replaces = unfiltered_bs->node_name;
-            has_replaces = true;
         }
     }
 
-    if (has_replaces) {
+    if (replaces) {
         BlockDriverState *to_replace_bs;
         AioContext *replace_aio_context;
         int64_t bs_size, replace_size;
@@ -3066,7 +3035,7 @@ static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
      * and will allow to check whether the node still exist at mirror completion
      */
     mirror_start(job_id, bs, target,
-                 has_replaces ? replaces : NULL, job_flags,
+                 replaces, job_flags,
                  speed, granularity, buf_size, sync, backing_mode, zero_target,
                  on_source_error, on_target_error, unmap, filter_node_name,
                  copy_mode, errp);
@@ -3104,7 +3073,7 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
         arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
     }
 
-    if (!arg->has_format) {
+    if (!arg->format) {
         format = (arg->mode == NEW_IMAGE_MODE_EXISTING
                   ? NULL : bs->drv->format_name);
     }
@@ -3124,8 +3093,8 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
         goto out;
     }
 
-    if (arg->has_replaces) {
-        if (!arg->has_node_name) {
+    if (arg->replaces) {
+        if (!arg->node_name) {
             error_setg(errp, "a node-name must be provided when replacing a"
                              " named node of the graph");
             goto out;
@@ -3175,7 +3144,7 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
     }
 
     options = qdict_new();
-    if (arg->has_node_name) {
+    if (arg->node_name) {
         qdict_put_str(options, "node-name", arg->node_name);
     }
     if (format) {
@@ -3210,8 +3179,8 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
     aio_context_release(old_context);
     aio_context_acquire(aio_context);
 
-    blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs,
-                           arg->has_replaces, arg->replaces, arg->sync,
+    blockdev_mirror_common(arg->job_id, bs, target_bs,
+                           arg->replaces, arg->sync,
                            backing_mode, zero_target,
                            arg->has_speed, arg->speed,
                            arg->has_granularity, arg->granularity,
@@ -3219,7 +3188,7 @@ void qmp_drive_mirror(DriveMirror *arg, Error **errp)
                            arg->has_on_source_error, arg->on_source_error,
                            arg->has_on_target_error, arg->on_target_error,
                            arg->has_unmap, arg->unmap,
-                           false, NULL,
+                           NULL,
                            arg->has_copy_mode, arg->copy_mode,
                            arg->has_auto_finalize, arg->auto_finalize,
                            arg->has_auto_dismiss, arg->auto_dismiss,
@@ -3229,9 +3198,9 @@ out:
     aio_context_release(aio_context);
 }
 
-void qmp_blockdev_mirror(bool has_job_id, const char *job_id,
+void qmp_blockdev_mirror(const char *job_id,
                          const char *device, const char *target,
-                         bool has_replaces, const char *replaces,
+                         const char *replaces,
                          MirrorSyncMode sync,
                          bool has_speed, int64_t speed,
                          bool has_granularity, uint32_t granularity,
@@ -3240,7 +3209,6 @@ void qmp_blockdev_mirror(bool has_job_id, const char *job_id,
                          BlockdevOnError on_source_error,
                          bool has_on_target_error,
                          BlockdevOnError on_target_error,
-                         bool has_filter_node_name,
                          const char *filter_node_name,
                          bool has_copy_mode, MirrorCopyMode copy_mode,
                          bool has_auto_finalize, bool auto_finalize,
@@ -3281,15 +3249,14 @@ void qmp_blockdev_mirror(bool has_job_id, const char *job_id,
         goto out;
     }
 
-    blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs,
-                           has_replaces, replaces, sync, backing_mode,
+    blockdev_mirror_common(job_id, bs, target_bs,
+                           replaces, sync, backing_mode,
                            zero_target, has_speed, speed,
                            has_granularity, granularity,
                            has_buf_size, buf_size,
                            has_on_source_error, on_source_error,
                            has_on_target_error, on_target_error,
-                           true, true,
-                           has_filter_node_name, filter_node_name,
+                           true, true, filter_node_name,
                            has_copy_mode, copy_mode,
                            has_auto_finalize, auto_finalize,
                            has_auto_dismiss, auto_dismiss,
@@ -3561,7 +3528,7 @@ void qmp_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp)
         QDict *qdict;
 
         /* Check for the selected node name */
-        if (!options->has_node_name) {
+        if (!options->node_name) {
             error_setg(errp, "node-name not specified");
             goto fail;
         }
@@ -3666,8 +3633,7 @@ static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs,
     return NULL;
 }
 
-void qmp_x_blockdev_change(const char *parent, bool has_child,
-                           const char *child, bool has_node,
+void qmp_x_blockdev_change(const char *parent, const char *child,
                            const char *node, Error **errp)
 {
     BlockDriverState *parent_bs, *new_bs = NULL;
@@ -3678,8 +3644,8 @@ void qmp_x_blockdev_change(const char *parent, bool has_child,
         return;
     }
 
-    if (has_child == has_node) {
-        if (has_child) {
+    if (!child == !node) {
+        if (child) {
             error_setg(errp, "The parameters child and node are in conflict");
         } else {
             error_setg(errp, "Either child or node must be specified");
@@ -3687,7 +3653,7 @@ void qmp_x_blockdev_change(const char *parent, bool has_child,
         return;
     }
 
-    if (has_child) {
+    if (child) {
         p_child = bdrv_find_child(parent_bs, child);
         if (!p_child) {
             error_setg(errp, "Node '%s' does not have child '%s'",
@@ -3697,7 +3663,7 @@ void qmp_x_blockdev_change(const char *parent, bool has_child,
         bdrv_del_child(parent_bs, p_child, errp);
     }
 
-    if (has_node) {
+    if (node) {
         new_bs = bdrv_find_node(node);
         if (!new_bs) {
             error_setg(errp, "Node '%s' not found", node);
diff --git a/blockjob.c b/blockjob.c
index 2d86014fa5..5df6b91f67 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -353,7 +353,6 @@ BlockJobInfo *block_job_query_locked(BlockJob *job, Error **errp)
     info->auto_finalize = job->job.auto_finalize;
     info->auto_dismiss  = job->job.auto_dismiss;
     if (job->job.ret) {
-        info->has_error = true;
         info->error = job->job.err ?
                         g_strdup(error_get_pretty(job->job.err)) :
                         g_strdup(strerror(-job->job.ret));
@@ -413,7 +412,6 @@ static void block_job_event_completed_locked(Notifier *n, void *opaque)
                                         progress_total,
                                         progress_current,
                                         job->speed,
-                                        !!msg,
                                         msg);
 }
 
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 01b789a79e..878e3ca1f3 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1496,8 +1496,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
             }
         }
 
-        qmp_blockdev_change_medium(true, device, false, NULL, target,
-                                   !!arg, arg, true, force,
+        qmp_blockdev_change_medium(device, NULL, target, arg, true, force,
                                    !!read_only, read_only_mode,
                                    &err);
     }
diff --git a/qemu-img.c b/qemu-img.c
index a3b64c88af..2b50b068e0 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2915,15 +2915,15 @@ static ImageInfoList *collect_image_info_list(bool image_opts,
         image_opts = false;
 
         if (chain) {
-            if (info->has_full_backing_filename) {
+            if (info->full_backing_filename) {
                 filename = info->full_backing_filename;
-            } else if (info->has_backing_filename) {
+            } else if (info->backing_filename) {
                 error_report("Could not determine absolute backing filename,"
                              " but backing filename '%s' present",
                              info->backing_filename);
                 goto err;
             }
-            if (info->has_backing_filename_format) {
+            if (info->backing_filename_format) {
                 fmt = info->backing_filename_format;
             }
         }
@@ -3046,7 +3046,7 @@ static int dump_map_entry(OutputFormat output_format, MapEntry *e,
             printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n",
                    e->start, e->length,
                    e->has_offset ? e->offset : 0,
-                   e->has_filename ? e->filename : "");
+                   e->filename ?: "");
         }
         /* This format ignores the distinction between 0, ZERO and ZERO|DATA.
          * Modify the flags here to allow more coalescing.
@@ -3127,7 +3127,6 @@ static int get_block_status(BlockDriverState *bs, int64_t offset,
         .has_offset = has_offset,
         .depth = depth,
         .present = !!(ret & BDRV_BLOCK_ALLOCATED),
-        .has_filename = filename,
         .filename = filename,
     };
 
@@ -3143,11 +3142,11 @@ static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next)
         curr->data != next->data ||
         curr->depth != next->depth ||
         curr->present != next->present ||
-        curr->has_filename != next->has_filename ||
+        !curr->filename != !next->filename ||
         curr->has_offset != next->has_offset) {
         return false;
     }
-    if (curr->has_filename && strcmp(curr->filename, next->filename)) {
+    if (curr->filename && strcmp(curr->filename, next->filename)) {
         return false;
     }
     if (curr->has_offset && curr->offset + curr->length != next->offset) {
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 0cd5aa6f02..6ff45308a9 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -1107,9 +1107,7 @@ int main(int argc, char **argv)
         .has_writable       = true,
         .writable           = !readonly,
         .u.nbd = {
-            .has_name             = true,
             .name                 = g_strdup(export_name),
-            .has_description      = !!export_description,
             .description          = g_strdup(export_description),
             .has_bitmaps          = !!bitmaps,
             .bitmaps              = bitmaps,
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 8db1c2caef..a205aae1e3 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,9 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/block-core.json',
-            'qapi/block-export.json',
-            'qapi/block.json',
             'qapi/char.json',
             'qapi/crypto.json',
             'qapi/dump.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 11/30] qapi chardev: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (9 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 10/30] qapi block: Elide redundant has_FOO in generated C Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 12/30] qapi crypto: " Markus Armbruster
                   ` (19 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Marc-André Lureau,
	Paolo Bonzini, Daniel P . Berrangé,
	Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/char.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 chardev/char-file.c    |  4 ++--
 chardev/char-socket.c  | 10 ++++------
 chardev/char-udp.c     |  1 -
 chardev/char.c         |  6 +-----
 tests/unit/test-char.c |  1 -
 scripts/qapi/schema.py |  1 -
 6 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/chardev/char-file.c b/chardev/char-file.c
index 2fd80707e5..3a7b9caf6f 100644
--- a/chardev/char-file.c
+++ b/chardev/char-file.c
@@ -45,7 +45,7 @@ static void qmp_chardev_open_file(Chardev *chr,
     DWORD accessmode;
     DWORD flags;
 
-    if (file->has_in) {
+    if (file->in) {
         error_setg(errp, "input file not supported");
         return;
     }
@@ -83,7 +83,7 @@ static void qmp_chardev_open_file(Chardev *chr,
         return;
     }
 
-    if (file->has_in) {
+    if (file->in) {
         flags = O_RDONLY;
         in = qmp_chardev_open_file_source(file->in, flags, errp);
         if (in < 0) {
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index 879564aa8a..29ffe5075e 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -1251,7 +1251,7 @@ static bool qmp_chardev_validate_socket(ChardevSocket *sock,
                        "'fd' address type");
             return false;
         }
-        if (sock->has_tls_creds &&
+        if (sock->tls_creds &&
             !(sock->has_server && sock->server)) {
             error_setg(errp,
                        "'tls_creds' option is incompatible with "
@@ -1261,7 +1261,7 @@ static bool qmp_chardev_validate_socket(ChardevSocket *sock,
         break;
 
     case SOCKET_ADDRESS_TYPE_UNIX:
-        if (sock->has_tls_creds) {
+        if (sock->tls_creds) {
             error_setg(errp,
                        "'tls_creds' option is incompatible with "
                        "'unix' address type");
@@ -1273,7 +1273,7 @@ static bool qmp_chardev_validate_socket(ChardevSocket *sock,
         break;
 
     case SOCKET_ADDRESS_TYPE_VSOCK:
-        if (sock->has_tls_creds) {
+        if (sock->tls_creds) {
             error_setg(errp,
                        "'tls_creds' option is incompatible with "
                        "'vsock' address type");
@@ -1284,7 +1284,7 @@ static bool qmp_chardev_validate_socket(ChardevSocket *sock,
         break;
     }
 
-    if (sock->has_tls_authz && !sock->has_tls_creds) {
+    if (sock->tls_authz && !sock->tls_creds) {
         error_setg(errp, "'tls_authz' option requires 'tls_creds' option");
         return false;
     }
@@ -1465,9 +1465,7 @@ static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
     sock->wait = qemu_opt_get_bool(opts, "wait", true);
     sock->has_reconnect = qemu_opt_find(opts, "reconnect");
     sock->reconnect = qemu_opt_get_number(opts, "reconnect", 0);
-    sock->has_tls_creds = qemu_opt_get(opts, "tls-creds");
     sock->tls_creds = g_strdup(qemu_opt_get(opts, "tls-creds"));
-    sock->has_tls_authz = qemu_opt_get(opts, "tls-authz");
     sock->tls_authz = g_strdup(qemu_opt_get(opts, "tls-authz"));
 
     addr = g_new0(SocketAddressLegacy, 1);
diff --git a/chardev/char-udp.c b/chardev/char-udp.c
index 6756e69924..3d9a2d5e77 100644
--- a/chardev/char-udp.c
+++ b/chardev/char-udp.c
@@ -178,7 +178,6 @@ static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
     udp->remote = addr;
 
     if (has_local) {
-        udp->has_local = true;
         addr = g_new0(SocketAddressLegacy, 1);
         addr->type = SOCKET_ADDRESS_TYPE_INET;
         addr->u.inet.data = g_new(InetSocketAddress, 1);
diff --git a/chardev/char.c b/chardev/char.c
index b005df3ccf..4c5de16402 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -240,7 +240,7 @@ static void qemu_char_open(Chardev *chr, ChardevBackend *backend,
     /* Any ChardevCommon member would work */
     ChardevCommon *common = backend ? backend->u.null.data : NULL;
 
-    if (common && common->has_logfile) {
+    if (common && common->logfile) {
         int flags = O_WRONLY;
         if (common->has_logappend &&
             common->logappend) {
@@ -496,9 +496,7 @@ void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
 {
     const char *logfile = qemu_opt_get(opts, "logfile");
 
-    backend->has_logfile = logfile != NULL;
     backend->logfile = g_strdup(logfile);
-
     backend->has_logappend = true;
     backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
 }
@@ -1057,7 +1055,6 @@ ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
     ret = g_new0(ChardevReturn, 1);
     if (CHARDEV_IS_PTY(chr)) {
         ret->pty = g_strdup(chr->filename + 4);
-        ret->has_pty = true;
     }
 
     return ret;
@@ -1160,7 +1157,6 @@ ChardevReturn *qmp_chardev_change(const char *id, ChardevBackend *backend,
     ret = g_new0(ChardevReturn, 1);
     if (CHARDEV_IS_PTY(chr_new)) {
         ret->pty = g_strdup(chr_new->filename + 4);
-        ret->has_pty = true;
     }
 
     return ret;
diff --git a/tests/unit/test-char.c b/tests/unit/test-char.c
index 5b3b48ebac..649fdf64e1 100644
--- a/tests/unit/test-char.c
+++ b/tests/unit/test-char.c
@@ -1212,7 +1212,6 @@ static void char_file_fifo_test(void)
     char *fifo = g_build_filename(tmp_path, "fifo", NULL);
     char *out = g_build_filename(tmp_path, "out", NULL);
     ChardevFile file = { .in = fifo,
-                         .has_in = true,
                          .out = out };
     ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
                                .u.file.data = &file };
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index a205aae1e3..707c671133 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/char.json',
             'qapi/crypto.json',
             'qapi/dump.json',
             'qapi/job.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 12/30] qapi crypto: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (10 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 11/30] qapi chardev: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 13/30] qapi dump: " Markus Armbruster
                   ` (18 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé,
	Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/crypto.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Daniel P. Berrangé" <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 crypto/block-luks.c            | 16 ++++++++--------
 tests/unit/test-crypto-block.c |  6 ------
 scripts/qapi/schema.py         |  1 -
 3 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index df2b4105d6..ff9e3945d1 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -1597,13 +1597,13 @@ qcrypto_block_luks_amend_add_keyslot(QCryptoBlock *block,
     g_autofree char *new_password = NULL;
     g_autofree uint8_t *master_key = NULL;
 
-    char *secret = opts_luks->has_secret ? opts_luks->secret : luks->secret;
+    char *secret = opts_luks->secret ?: luks->secret;
 
-    if (!opts_luks->has_new_secret) {
+    if (!opts_luks->new_secret) {
         error_setg(errp, "'new-secret' is required to activate a keyslot");
         return -1;
     }
-    if (opts_luks->has_old_secret) {
+    if (opts_luks->old_secret) {
         error_setg(errp,
                    "'old-secret' must not be given when activating keyslots");
         return -1;
@@ -1677,7 +1677,7 @@ qcrypto_block_luks_amend_erase_keyslots(QCryptoBlock *block,
     g_autofree uint8_t *tmpkey = NULL;
     g_autofree char *old_password = NULL;
 
-    if (opts_luks->has_new_secret) {
+    if (opts_luks->new_secret) {
         error_setg(errp,
                    "'new-secret' must not be given when erasing keyslots");
         return -1;
@@ -1687,14 +1687,14 @@ qcrypto_block_luks_amend_erase_keyslots(QCryptoBlock *block,
                    "'iter-time' must not be given when erasing keyslots");
         return -1;
     }
-    if (opts_luks->has_secret) {
+    if (opts_luks->secret) {
         error_setg(errp,
                    "'secret' must not be given when erasing keyslots");
         return -1;
     }
 
     /* Load the old password if given */
-    if (opts_luks->has_old_secret) {
+    if (opts_luks->old_secret) {
         old_password = qcrypto_secret_lookup_as_utf8(opts_luks->old_secret,
                                                      errp);
         if (!old_password) {
@@ -1719,7 +1719,7 @@ qcrypto_block_luks_amend_erase_keyslots(QCryptoBlock *block,
             return -1;
         }
 
-        if (opts_luks->has_old_secret) {
+        if (opts_luks->old_secret) {
             int rv = qcrypto_block_luks_load_key(block,
                                                  keyslot,
                                                  old_password,
@@ -1761,7 +1761,7 @@ qcrypto_block_luks_amend_erase_keyslots(QCryptoBlock *block,
         }
 
     /* Erase all keyslots that match the given old password */
-    } else if (opts_luks->has_old_secret) {
+    } else if (opts_luks->old_secret) {
 
         unsigned long slots_to_erase_bitmap = 0;
         size_t i;
diff --git a/tests/unit/test-crypto-block.c b/tests/unit/test-crypto-block.c
index b629e240a9..347cd5f3d7 100644
--- a/tests/unit/test-crypto-block.c
+++ b/tests/unit/test-crypto-block.c
@@ -41,7 +41,6 @@
 static QCryptoBlockCreateOptions qcow_create_opts = {
     .format = Q_CRYPTO_BLOCK_FORMAT_QCOW,
     .u.qcow = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
     },
 };
@@ -49,7 +48,6 @@ static QCryptoBlockCreateOptions qcow_create_opts = {
 static QCryptoBlockOpenOptions qcow_open_opts = {
     .format = Q_CRYPTO_BLOCK_FORMAT_QCOW,
     .u.qcow = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
     },
 };
@@ -59,7 +57,6 @@ static QCryptoBlockOpenOptions qcow_open_opts = {
 static QCryptoBlockOpenOptions luks_open_opts = {
     .format = Q_CRYPTO_BLOCK_FORMAT_LUKS,
     .u.luks = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
     },
 };
@@ -69,7 +66,6 @@ static QCryptoBlockOpenOptions luks_open_opts = {
 static QCryptoBlockCreateOptions luks_create_opts_default = {
     .format = Q_CRYPTO_BLOCK_FORMAT_LUKS,
     .u.luks = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
     },
 };
@@ -79,7 +75,6 @@ static QCryptoBlockCreateOptions luks_create_opts_default = {
 static QCryptoBlockCreateOptions luks_create_opts_aes256_cbc_plain64 = {
     .format = Q_CRYPTO_BLOCK_FORMAT_LUKS,
     .u.luks = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
         .has_cipher_alg = true,
         .cipher_alg = QCRYPTO_CIPHER_ALG_AES_256,
@@ -94,7 +89,6 @@ static QCryptoBlockCreateOptions luks_create_opts_aes256_cbc_plain64 = {
 static QCryptoBlockCreateOptions luks_create_opts_aes256_cbc_essiv = {
     .format = Q_CRYPTO_BLOCK_FORMAT_LUKS,
     .u.luks = {
-        .has_key_secret = true,
         .key_secret = (char *)"sec0",
         .has_cipher_alg = true,
         .cipher_alg = QCRYPTO_CIPHER_ALG_AES_256,
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 707c671133..21d0b28790 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/crypto.json',
             'qapi/dump.json',
             'qapi/job.json',
             'qapi/machine.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 13/30] qapi dump: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (11 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 12/30] qapi crypto: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-05 17:15   ` Philippe Mathieu-Daudé
  2022-11-04 16:06 ` [PATCH v3 14/30] qapi job: " Markus Armbruster
                   ` (17 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Marc-André Lureau

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/dump.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 dump/dump.c            | 4 ++--
 scripts/qapi/schema.py | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/dump/dump.c b/dump/dump.c
index df117c847f..1278dc35f9 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -2044,8 +2044,8 @@ static void dump_process(DumpState *s, Error **errp)
     result = qmp_query_dump(NULL);
     /* should never fail */
     assert(result);
-    qapi_event_send_dump_completed(result, !!*errp, (*errp ?
-                                                     error_get_pretty(*errp) : NULL));
+    qapi_event_send_dump_completed(result,
+                                   *errp ? error_get_pretty(*errp) : NULL);
     qapi_free_DumpQueryResult(result);
 
     dump_cleanup(s);
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 21d0b28790..07e2a0f263 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/dump.json',
             'qapi/job.json',
             'qapi/machine.json',
             'qapi/machine-target.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 14/30] qapi job: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (12 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 13/30] qapi dump: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 15/30] qapi machine: " Markus Armbruster
                   ` (16 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Vladimir Sementsov-Ogievskiy, qemu-block

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/job.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: John Snow <jsnow@redhat.com>
Cc: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Cc: qemu-block@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
---
 job-qmp.c              | 3 +--
 scripts/qapi/schema.py | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/job-qmp.c b/job-qmp.c
index d498fc89c0..9e26fa899f 100644
--- a/job-qmp.c
+++ b/job-qmp.c
@@ -156,8 +156,7 @@ static JobInfo *job_query_single_locked(Job *job, Error **errp)
         .status             = job->status,
         .current_progress   = progress_current,
         .total_progress     = progress_total,
-        .has_error          = !!job->err,
-        .error              = job->err ? \
+        .error              = job->err ?
                               g_strdup(error_get_pretty(job->err)) : NULL,
     };
 
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 07e2a0f263..ff73fdb0b3 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/job.json',
             'qapi/machine.json',
             'qapi/machine-target.json',
             'qapi/migration.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 15/30] qapi machine: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (13 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 14/30] qapi job: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 16/30] qapi migration: " Markus Armbruster
                   ` (15 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Eduardo Habkost, Marcel Apfelbaum,
	Philippe Mathieu-Daudé,
	Yanan Wang

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/machine*.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Eduardo Habkost <eduardo@habkost.net>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/core/machine-hmp-cmds.c       |  2 +-
 hw/core/machine-qmp-cmds.c       |  9 ++-------
 hw/core/machine.c                | 10 ++++------
 hw/core/numa.c                   |  8 ++++----
 hw/mem/pc-dimm.c                 |  1 -
 hw/nvram/fw_cfg.c                |  2 +-
 hw/virtio/virtio-mem-pci.c       |  4 +---
 hw/virtio/virtio-pmem-pci.c      |  1 -
 target/arm/monitor.c             |  1 -
 target/i386/cpu-sysemu.c         |  7 ++-----
 target/i386/cpu.c                |  1 -
 target/s390x/cpu_models_sysemu.c |  1 -
 scripts/qapi/schema.py           |  2 --
 13 files changed, 15 insertions(+), 34 deletions(-)

diff --git a/hw/core/machine-hmp-cmds.c b/hw/core/machine-hmp-cmds.c
index 5cb5eecbfc..a1a51e9778 100644
--- a/hw/core/machine-hmp-cmds.c
+++ b/hw/core/machine-hmp-cmds.c
@@ -62,7 +62,7 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
         monitor_printf(mon, "  type: \"%s\"\n", l->value->type);
         monitor_printf(mon, "  vcpus_count: \"%" PRIu64 "\"\n",
                        l->value->vcpus_count);
-        if (l->value->has_qom_path) {
+        if (l->value->qom_path) {
             monitor_printf(mon, "  qom_path: \"%s\"\n", l->value->qom_path);
         }
 
diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
index 4f4ab30f8c..80d5e59651 100644
--- a/hw/core/machine-qmp-cmds.c
+++ b/hw/core/machine-qmp-cmds.c
@@ -55,8 +55,7 @@ CpuInfoFastList *qmp_query_cpus_fast(Error **errp)
         value->qom_path = object_get_canonical_path(OBJECT(cpu));
         value->thread_id = cpu->thread_id;
 
-        value->has_props = !!mc->cpu_index_to_instance_props;
-        if (value->has_props) {
+        if (mc->cpu_index_to_instance_props) {
             CpuInstanceProperties *props;
             props = g_malloc0(sizeof(*props));
             *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index);
@@ -90,7 +89,6 @@ MachineInfoList *qmp_query_machines(Error **errp)
         }
 
         if (mc->alias) {
-            info->has_alias = true;
             info->alias = g_strdup(mc->alias);
         }
 
@@ -101,11 +99,9 @@ MachineInfoList *qmp_query_machines(Error **errp)
         info->deprecated = !!mc->deprecation_reason;
         if (mc->default_cpu_type) {
             info->default_cpu_type = g_strdup(mc->default_cpu_type);
-            info->has_default_cpu_type = true;
         }
         if (mc->default_ram_id) {
             info->default_ram_id = g_strdup(mc->default_ram_id);
-            info->has_default_ram_id = true;
         }
 
         QAPI_LIST_PREPEND(mach_list, info);
@@ -168,7 +164,6 @@ static int query_memdev(Object *obj, void *opaque)
         m = g_malloc0(sizeof(*m));
 
         m->id = g_strdup(object_get_canonical_path_component(obj));
-        m->has_id = !!m->id;
 
         m->size = object_property_get_uint(obj, "size", &error_abort);
         m->merge = object_property_get_bool(obj, "merge", &error_abort);
@@ -227,7 +222,7 @@ HumanReadableText *qmp_x_query_numa(Error **errp)
     for (i = 0; i < nb_numa_nodes; i++) {
         g_string_append_printf(buf, "node %d cpus:", i);
         for (cpu = cpu_list; cpu; cpu = cpu->next) {
-            if (cpu->value->has_props && cpu->value->props->has_node_id &&
+            if (cpu->value->props && cpu->value->props->has_node_id &&
                 cpu->value->props->node_id == i) {
                 g_string_append_printf(buf, " %" PRIi64, cpu->value->cpu_index);
             }
diff --git a/hw/core/machine.c b/hw/core/machine.c
index aa520e74a8..cf9407d4aa 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -682,7 +682,6 @@ HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
 
         cpu = machine->possible_cpus->cpus[i].cpu;
         if (cpu) {
-            cpu_item->has_qom_path = true;
             cpu_item->qom_path = object_get_canonical_path(cpu);
         }
         QAPI_LIST_PREPEND(head, cpu_item);
@@ -871,8 +870,7 @@ static void machine_copy_boot_config(MachineState *ms, BootConfiguration *config
 
     machine_free_boot_config(ms);
     ms->boot_config = *config;
-    if (!config->has_order) {
-        ms->boot_config.has_order = true;
+    if (!config->order) {
         ms->boot_config.order = g_strdup(machine_class->default_boot_order);
     }
 }
@@ -887,13 +885,13 @@ static void machine_set_boot(Object *obj, Visitor *v, const char *name,
     if (!visit_type_BootConfiguration(v, name, &config, errp)) {
         return;
     }
-    if (config->has_order) {
+    if (config->order) {
         validate_bootdevices(config->order, errp);
         if (*errp) {
             goto out_free;
         }
     }
-    if (config->has_once) {
+    if (config->once) {
         validate_bootdevices(config->once, errp);
         if (*errp) {
             goto out_free;
@@ -1424,7 +1422,7 @@ void qdev_machine_creation_done(void)
 {
     cpu_synchronize_all_post_init();
 
-    if (current_machine->boot_config.has_once) {
+    if (current_machine->boot_config.once) {
         qemu_boot_set(current_machine->boot_config.once, &error_fatal);
         qemu_register_reset(restore_boot_order, g_strdup(current_machine->boot_config.order));
     }
diff --git a/hw/core/numa.c b/hw/core/numa.c
index ea24a5fa8c..d8d36b16d8 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -130,9 +130,9 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
         }
     }
 
-    have_memdevs = have_memdevs ? : node->has_memdev;
-    have_mem = have_mem ? : node->has_mem;
-    if ((node->has_mem && have_memdevs) || (node->has_memdev && have_mem)) {
+    have_memdevs = have_memdevs || node->memdev;
+    have_mem = have_mem || node->has_mem;
+    if ((node->has_mem && have_memdevs) || (node->memdev && have_mem)) {
         error_setg(errp, "numa configuration should use either mem= or memdev=,"
                    "mixing both is not allowed");
         return;
@@ -152,7 +152,7 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
                         " use -numa node,memdev instead");
         }
     }
-    if (node->has_memdev) {
+    if (node->memdev) {
         Object *o;
         o = object_resolve_path_type(node->memdev, TYPE_MEMORY_BACKEND, NULL);
         if (!o) {
diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index f27e1a11ba..50ef83215c 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -252,7 +252,6 @@ static void pc_dimm_md_fill_device_info(const MemoryDeviceState *md,
     const DeviceState *dev = DEVICE(md);
 
     if (dev->id) {
-        di->has_id = true;
         di->id = g_strdup(dev->id);
     }
     di->hotplugged = dev->hotplugged;
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 6edf5ea3e9..a00881bc64 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -201,7 +201,7 @@ static void fw_cfg_bootsplash(FWCfgState *s)
     }
 
     /* insert splash file if user configurated */
-    if (current_machine->boot_config.has_splash) {
+    if (current_machine->boot_config.splash) {
         const char *boot_splash_filename = current_machine->boot_config.splash;
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, boot_splash_filename);
         if (filename == NULL) {
diff --git a/hw/virtio/virtio-mem-pci.c b/hw/virtio/virtio-mem-pci.c
index 5c5c1e3ae3..e8c338c5d9 100644
--- a/hw/virtio/virtio-mem-pci.c
+++ b/hw/virtio/virtio-mem-pci.c
@@ -65,7 +65,6 @@ static void virtio_mem_pci_fill_device_info(const MemoryDeviceState *md,
     DeviceState *dev = DEVICE(md);
 
     if (dev->id) {
-        vi->has_id = true;
         vi->id = g_strdup(dev->id);
     }
 
@@ -90,8 +89,7 @@ static void virtio_mem_pci_size_change_notify(Notifier *notifier, void *data)
     char *qom_path = object_get_canonical_path(OBJECT(dev));
     const uint64_t * const size_p = data;
 
-    qapi_event_send_memory_device_size_change(!!dev->id, dev->id, *size_p,
-                                              qom_path);
+    qapi_event_send_memory_device_size_change(dev->id, *size_p, qom_path);
     g_free(qom_path);
 }
 
diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
index 7d9f4ec189..1b89ade9d1 100644
--- a/hw/virtio/virtio-pmem-pci.c
+++ b/hw/virtio/virtio-pmem-pci.c
@@ -70,7 +70,6 @@ static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
     DeviceState *dev = DEVICE(md);
 
     if (dev->id) {
-        vi->has_id = true;
         vi->id = g_strdup(dev->id);
     }
 
diff --git a/target/arm/monitor.c b/target/arm/monitor.c
index 80c64fa355..ecdd5ee817 100644
--- a/target/arm/monitor.c
+++ b/target/arm/monitor.c
@@ -221,7 +221,6 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         qobject_unref(qdict_out);
     } else {
         expansion_info->model->props = QOBJECT(qdict_out);
-        expansion_info->model->has_props = true;
     }
 
     object_unref(obj);
diff --git a/target/i386/cpu-sysemu.c b/target/i386/cpu-sysemu.c
index a6f47b7d11..fc97213a73 100644
--- a/target/i386/cpu-sysemu.c
+++ b/target/i386/cpu-sysemu.c
@@ -187,10 +187,8 @@ qmp_query_cpu_model_expansion(CpuModelExpansionType type,
     QDict *props = NULL;
     const char *base_name;
 
-    xc = x86_cpu_from_model(model->name,
-                            model->has_props ?
-                                qobject_to(QDict, model->props) :
-                                NULL, &err);
+    xc = x86_cpu_from_model(model->name, qobject_to(QDict, model->props),
+                            &err);
     if (err) {
         goto out;
     }
@@ -198,7 +196,6 @@ qmp_query_cpu_model_expansion(CpuModelExpansionType type,
     props = qdict_new();
     ret->model = g_new0(CpuModelInfo, 1);
     ret->model->props = QOBJECT(props);
-    ret->model->has_props = true;
 
     switch (type) {
     case CPU_MODEL_EXPANSION_TYPE_STATIC:
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 22b681ca37..ae502f0bfe 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4901,7 +4901,6 @@ static void x86_cpu_definition_entry(gpointer data, gpointer user_data)
      */
     if (default_cpu_version != CPU_VERSION_LEGACY) {
         info->alias_of = x86_cpu_class_get_alias_of(cc);
-        info->has_alias_of = !!info->alias_of;
     }
 
     QAPI_LIST_PREPEND(*cpu_list, info);
diff --git a/target/s390x/cpu_models_sysemu.c b/target/s390x/cpu_models_sysemu.c
index d8a141a023..63981bf36b 100644
--- a/target/s390x/cpu_models_sysemu.c
+++ b/target/s390x/cpu_models_sysemu.c
@@ -210,7 +210,6 @@ static void cpu_info_from_model(CpuModelInfo *info, const S390CPUModel *model,
         qobject_unref(qdict);
     } else {
         info->props = QOBJECT(qdict);
-        info->has_props = true;
     }
 }
 
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index ff73fdb0b3..9d729468b5 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,8 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/machine.json',
-            'qapi/machine-target.json',
             'qapi/migration.json',
             'qapi/misc.json',
             'qapi/net.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 16/30] qapi migration: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (14 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 15/30] qapi machine: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:06 ` [PATCH v3 17/30] qapi misc: " Markus Armbruster
                   ` (14 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Juan Quintela,
	Dr . David Alan Gilbert, Daniel P . Berrangé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/migration.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Juan Quintela <quintela@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 migration/block-dirty-bitmap.c |  4 ++--
 migration/colo.c               |  1 -
 migration/migration.c          | 27 ++++++++-------------------
 monitor/hmp-cmds.c             | 26 +++++++++++---------------
 monitor/misc.c                 |  2 +-
 scripts/qapi/schema.py         |  1 -
 6 files changed, 22 insertions(+), 39 deletions(-)

diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
index 9aba7d9c22..283017d7d3 100644
--- a/migration/block-dirty-bitmap.c
+++ b/migration/block-dirty-bitmap.c
@@ -551,7 +551,7 @@ static int add_bitmaps_to_list(DBMSaveState *s, BlockDriverState *bs,
             }
 
             bitmap_alias = bmap_inner->alias;
-            if (bmap_inner->has_transform) {
+            if (bmap_inner->transform) {
                 bitmap_transform = bmap_inner->transform;
             }
         } else {
@@ -821,7 +821,7 @@ static int dirty_bitmap_load_start(QEMUFile *f, DBMLoadState *s)
     }
 
     if (s->bmap_inner &&
-        s->bmap_inner->has_transform &&
+        s->bmap_inner->transform &&
         s->bmap_inner->transform->has_persistent) {
         persistent = s->bmap_inner->transform->persistent;
     } else {
diff --git a/migration/colo.c b/migration/colo.c
index 2b71722fd6..232c8d44b1 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -250,7 +250,6 @@ ReplicationStatus *qmp_query_xen_replication_status(Error **errp)
     replication_get_error_all(&err);
     if (err) {
         s->error = true;
-        s->has_desc = true;
         s->desc = g_strdup(error_get_pretty(err));
     } else {
         s->error = false;
diff --git a/migration/migration.c b/migration/migration.c
index 739bb683f3..4c8a0403ae 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -918,11 +918,8 @@ MigrationParameters *qmp_query_migrate_parameters(Error **errp)
     params->cpu_throttle_increment = s->parameters.cpu_throttle_increment;
     params->has_cpu_throttle_tailslow = true;
     params->cpu_throttle_tailslow = s->parameters.cpu_throttle_tailslow;
-    params->has_tls_creds = true;
     params->tls_creds = g_strdup(s->parameters.tls_creds);
-    params->has_tls_hostname = true;
     params->tls_hostname = g_strdup(s->parameters.tls_hostname);
-    params->has_tls_authz = true;
     params->tls_authz = g_strdup(s->parameters.tls_authz ?
                                  s->parameters.tls_authz : "");
     params->has_max_bandwidth = true;
@@ -1047,7 +1044,6 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
 {
     size_t page_size = qemu_target_page_size();
 
-    info->has_ram = true;
     info->ram = g_malloc0(sizeof(*info->ram));
     info->ram->transferred = ram_counters.transferred;
     info->ram->total = ram_bytes_total();
@@ -1069,7 +1065,6 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
     info->ram->postcopy_bytes = ram_counters.postcopy_bytes;
 
     if (migrate_use_xbzrle()) {
-        info->has_xbzrle_cache = true;
         info->xbzrle_cache = g_malloc0(sizeof(*info->xbzrle_cache));
         info->xbzrle_cache->cache_size = migrate_xbzrle_cache_size();
         info->xbzrle_cache->bytes = xbzrle_counters.bytes;
@@ -1081,7 +1076,6 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
     }
 
     if (migrate_use_compression()) {
-        info->has_compression = true;
         info->compression = g_malloc0(sizeof(*info->compression));
         info->compression->pages = compression_counters.pages;
         info->compression->busy = compression_counters.busy;
@@ -1106,7 +1100,6 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
 static void populate_disk_info(MigrationInfo *info)
 {
     if (blk_mig_active()) {
-        info->has_disk = true;
         info->disk = g_malloc0(sizeof(*info->disk));
         info->disk->transferred = blk_mig_bytes_transferred();
         info->disk->remaining = blk_mig_bytes_remaining();
@@ -1171,7 +1164,6 @@ static void fill_source_migration_info(MigrationInfo *info)
     case MIGRATION_STATUS_FAILED:
         info->has_status = true;
         if (s->error) {
-            info->has_error_desc = true;
             info->error_desc = g_strdup(error_get_pretty(s->error));
         }
         break;
@@ -1557,7 +1549,7 @@ static bool migrate_params_check(MigrationParameters *params, Error **errp)
 #ifdef CONFIG_LINUX
     if (migrate_use_zero_copy_send() &&
         ((params->has_multifd_compression && params->multifd_compression) ||
-         (params->has_tls_creds && params->tls_creds && *params->tls_creds))) {
+         (params->tls_creds && *params->tls_creds))) {
         error_setg(errp,
                    "Zero copy only available for non-compressed non-TLS multifd migration");
         return false;
@@ -1606,12 +1598,12 @@ static void migrate_params_test_apply(MigrateSetParameters *params,
         dest->cpu_throttle_tailslow = params->cpu_throttle_tailslow;
     }
 
-    if (params->has_tls_creds) {
+    if (params->tls_creds) {
         assert(params->tls_creds->type == QTYPE_QSTRING);
         dest->tls_creds = params->tls_creds->u.s;
     }
 
-    if (params->has_tls_hostname) {
+    if (params->tls_hostname) {
         assert(params->tls_hostname->type == QTYPE_QSTRING);
         dest->tls_hostname = params->tls_hostname->u.s;
     }
@@ -1703,19 +1695,19 @@ static void migrate_params_apply(MigrateSetParameters *params, Error **errp)
         s->parameters.cpu_throttle_tailslow = params->cpu_throttle_tailslow;
     }
 
-    if (params->has_tls_creds) {
+    if (params->tls_creds) {
         g_free(s->parameters.tls_creds);
         assert(params->tls_creds->type == QTYPE_QSTRING);
         s->parameters.tls_creds = g_strdup(params->tls_creds->u.s);
     }
 
-    if (params->has_tls_hostname) {
+    if (params->tls_hostname) {
         g_free(s->parameters.tls_hostname);
         assert(params->tls_hostname->type == QTYPE_QSTRING);
         s->parameters.tls_hostname = g_strdup(params->tls_hostname->u.s);
     }
 
-    if (params->has_tls_authz) {
+    if (params->tls_authz) {
         g_free(s->parameters.tls_authz);
         assert(params->tls_authz->type == QTYPE_QSTRING);
         s->parameters.tls_authz = g_strdup(params->tls_authz->u.s);
@@ -1792,14 +1784,14 @@ void qmp_migrate_set_parameters(MigrateSetParameters *params, Error **errp)
     MigrationParameters tmp;
 
     /* TODO Rewrite "" to null instead */
-    if (params->has_tls_creds
+    if (params->tls_creds
         && params->tls_creds->type == QTYPE_QNULL) {
         qobject_unref(params->tls_creds->u.n);
         params->tls_creds->type = QTYPE_QSTRING;
         params->tls_creds->u.s = strdup("");
     }
     /* TODO Rewrite "" to null instead */
-    if (params->has_tls_hostname
+    if (params->tls_hostname
         && params->tls_hostname->type == QTYPE_QNULL) {
         qobject_unref(params->tls_hostname->u.n);
         params->tls_hostname->type = QTYPE_QSTRING;
@@ -4474,9 +4466,6 @@ static void migration_instance_init(Object *obj)
     params->has_announce_max = true;
     params->has_announce_rounds = true;
     params->has_announce_step = true;
-    params->has_tls_creds = true;
-    params->has_tls_hostname = true;
-    params->has_tls_authz = true;
 
     qemu_sem_init(&ms->postcopy_pause_sem, 0);
     qemu_sem_init(&ms->postcopy_pause_rp_sem, 0);
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 878e3ca1f3..aa71fdba11 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -219,8 +219,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
     if (info->has_status) {
         monitor_printf(mon, "Migration status: %s",
                        MigrationStatus_str(info->status));
-        if (info->status == MIGRATION_STATUS_FAILED &&
-            info->has_error_desc) {
+        if (info->status == MIGRATION_STATUS_FAILED && info->error_desc) {
             monitor_printf(mon, " (%s)\n", info->error_desc);
         } else {
             monitor_printf(mon, "\n");
@@ -242,7 +241,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
         }
     }
 
-    if (info->has_ram) {
+    if (info->ram) {
         monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n",
                        info->ram->transferred >> 10);
         monitor_printf(mon, "throughput: %0.2f mbps\n",
@@ -295,7 +294,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
         }
     }
 
-    if (info->has_disk) {
+    if (info->disk) {
         monitor_printf(mon, "transferred disk: %" PRIu64 " kbytes\n",
                        info->disk->transferred >> 10);
         monitor_printf(mon, "remaining disk: %" PRIu64 " kbytes\n",
@@ -304,7 +303,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
                        info->disk->total >> 10);
     }
 
-    if (info->has_xbzrle_cache) {
+    if (info->xbzrle_cache) {
         monitor_printf(mon, "cache size: %" PRIu64 " bytes\n",
                        info->xbzrle_cache->cache_size);
         monitor_printf(mon, "xbzrle transferred: %" PRIu64 " kbytes\n",
@@ -321,7 +320,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
                        info->xbzrle_cache->overflow);
     }
 
-    if (info->has_compression) {
+    if (info->compression) {
         monitor_printf(mon, "compression pages: %" PRIu64 " pages\n",
                        info->compression->pages);
         monitor_printf(mon, "compression busy: %" PRIu64 "\n",
@@ -368,7 +367,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
         monitor_printf(mon, "]\n");
     }
 
-    if (info->has_vfio) {
+    if (info->vfio) {
         monitor_printf(mon, "vfio device transferred: %" PRIu64 " kbytes\n",
                        info->vfio->transferred >> 10);
     }
@@ -448,11 +447,11 @@ void hmp_info_migrate_parameters(Monitor *mon, const QDict *qdict)
         monitor_printf(mon, "%s: %u\n",
             MigrationParameter_str(MIGRATION_PARAMETER_MAX_CPU_THROTTLE),
             params->max_cpu_throttle);
-        assert(params->has_tls_creds);
+        assert(params->tls_creds);
         monitor_printf(mon, "%s: '%s'\n",
             MigrationParameter_str(MIGRATION_PARAMETER_TLS_CREDS),
             params->tls_creds);
-        assert(params->has_tls_hostname);
+        assert(params->tls_hostname);
         monitor_printf(mon, "%s: '%s'\n",
             MigrationParameter_str(MIGRATION_PARAMETER_TLS_HOSTNAME),
             params->tls_hostname);
@@ -1237,19 +1236,16 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
         visit_type_uint8(v, param, &p->max_cpu_throttle, &err);
         break;
     case MIGRATION_PARAMETER_TLS_CREDS:
-        p->has_tls_creds = true;
         p->tls_creds = g_new0(StrOrNull, 1);
         p->tls_creds->type = QTYPE_QSTRING;
         visit_type_str(v, param, &p->tls_creds->u.s, &err);
         break;
     case MIGRATION_PARAMETER_TLS_HOSTNAME:
-        p->has_tls_hostname = true;
         p->tls_hostname = g_new0(StrOrNull, 1);
         p->tls_hostname->type = QTYPE_QSTRING;
         visit_type_str(v, param, &p->tls_hostname->u.s, &err);
         break;
     case MIGRATION_PARAMETER_TLS_AUTHZ:
-        p->has_tls_authz = true;
         p->tls_authz = g_new0(StrOrNull, 1);
         p->tls_authz->type = QTYPE_QSTRING;
         visit_type_str(v, param, &p->tls_authz->u.s, &err);
@@ -1361,7 +1357,7 @@ void hmp_client_migrate_info(Monitor *mon, const QDict *qdict)
 
     qmp_client_migrate_info(protocol, hostname,
                             has_port, port, has_tls_port, tls_port,
-                            !!cert_subject, cert_subject, &err);
+                            cert_subject, &err);
     hmp_handle_error(mon, err);
 }
 
@@ -1519,7 +1515,7 @@ static void hmp_migrate_status_cb(void *opaque)
     info = qmp_query_migrate(NULL);
     if (!info->has_status || info->status == MIGRATION_STATUS_ACTIVE ||
         info->status == MIGRATION_STATUS_SETUP) {
-        if (info->has_disk) {
+        if (info->disk) {
             int progress;
 
             if (info->disk->remaining) {
@@ -1537,7 +1533,7 @@ static void hmp_migrate_status_cb(void *opaque)
         if (status->is_block_migration) {
             monitor_printf(status->mon, "\n");
         }
-        if (info->has_error_desc) {
+        if (info->error_desc) {
             error_report("%s", info->error_desc);
         }
         monitor_resume(status->mon);
diff --git a/monitor/misc.c b/monitor/misc.c
index 205487e2b9..78790306b1 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -398,7 +398,7 @@ static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
 void qmp_client_migrate_info(const char *protocol, const char *hostname,
                              bool has_port, int64_t port,
                              bool has_tls_port, int64_t tls_port,
-                             bool has_cert_subject, const char *cert_subject,
+                             const char *cert_subject,
                              Error **errp)
 {
     if (strcmp(protocol, "spice") == 0) {
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 9d729468b5..ad5b665212 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/migration.json',
             'qapi/misc.json',
             'qapi/net.json',
             'qapi/pci.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 17/30] qapi misc: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (15 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 16/30] qapi migration: " Markus Armbruster
@ 2022-11-04 16:06 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 18/30] qapi net: " Markus Armbruster
                   ` (13 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:06 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Dr . David Alan Gilbert

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/misc.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 include/monitor/monitor.h |  3 +--
 monitor/hmp-cmds.c        |  2 +-
 monitor/misc.c            | 19 +++++--------------
 monitor/qmp-cmds.c        |  6 +-----
 softmmu/vl.c              |  2 +-
 util/qemu-config.c        | 17 +++++------------
 scripts/qapi/schema.py    |  1 -
 7 files changed, 14 insertions(+), 36 deletions(-)

diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h
index 737e750670..1e6f4c9bd7 100644
--- a/include/monitor/monitor.h
+++ b/include/monitor/monitor.h
@@ -46,8 +46,7 @@ int monitor_read_password(MonitorHMP *mon, ReadLineFunc *readline_func,
                           void *opaque);
 
 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
-                                bool has_opaque, const char *opaque,
-                                Error **errp);
+                                const char *opaque, Error **errp);
 int monitor_fdset_dup_fd_add(int64_t fdset_id, int flags);
 void monitor_fdset_dup_fd_remove(int dup_fd);
 int64_t monitor_fdset_dup_fd_find(int dup_fd);
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index aa71fdba11..c5c8cb593e 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -104,7 +104,7 @@ void hmp_info_name(Monitor *mon, const QDict *qdict)
     NameInfo *info;
 
     info = qmp_query_name(NULL);
-    if (info->has_name) {
+    if (info->name) {
         monitor_printf(mon, "%s\n", info->name);
     }
     qapi_free_NameInfo(info);
diff --git a/monitor/misc.c b/monitor/misc.c
index 78790306b1..77aa5f1650 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -1132,7 +1132,7 @@ void monitor_fdsets_cleanup(void)
     }
 }
 
-AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
+AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id,
                       const char *opaque, Error **errp)
 {
     int fd;
@@ -1145,8 +1145,7 @@ AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
         goto error;
     }
 
-    fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
-                                  has_opaque, opaque, errp);
+    fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id, opaque, errp);
     if (fdinfo) {
         return fdinfo;
     }
@@ -1214,12 +1213,7 @@ FdsetInfoList *qmp_query_fdsets(Error **errp)
 
             fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
             fdsetfd_info->fd = mon_fdset_fd->fd;
-            if (mon_fdset_fd->opaque) {
-                fdsetfd_info->has_opaque = true;
-                fdsetfd_info->opaque = g_strdup(mon_fdset_fd->opaque);
-            } else {
-                fdsetfd_info->has_opaque = false;
-            }
+            fdsetfd_info->opaque = g_strdup(mon_fdset_fd->opaque);
 
             QAPI_LIST_PREPEND(fdset_info->fds, fdsetfd_info);
         }
@@ -1231,8 +1225,7 @@ FdsetInfoList *qmp_query_fdsets(Error **errp)
 }
 
 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
-                                bool has_opaque, const char *opaque,
-                                Error **errp)
+                                const char *opaque, Error **errp)
 {
     MonFdset *mon_fdset = NULL;
     MonFdsetFd *mon_fdset_fd;
@@ -1300,9 +1293,7 @@ AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
     mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
     mon_fdset_fd->fd = fd;
     mon_fdset_fd->removed = false;
-    if (has_opaque) {
-        mon_fdset_fd->opaque = g_strdup(opaque);
-    }
+    mon_fdset_fd->opaque = g_strdup(opaque);
     QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
 
     fdinfo = g_malloc0(sizeof(*fdinfo));
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 81c8fdadf8..f8ab5dd50f 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -50,11 +50,7 @@ NameInfo *qmp_query_name(Error **errp)
 {
     NameInfo *info = g_malloc0(sizeof(*info));
 
-    if (qemu_name) {
-        info->has_name = true;
-        info->name = g_strdup(qemu_name);
-    }
-
+    info->name = g_strdup(qemu_name);
     return info;
 }
 
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 5115221efe..798e1dc933 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -611,7 +611,7 @@ static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
     }
 
     /* add the duplicate fd, and optionally the opaque string, to the fd set */
-    fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
+    fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, fd_opaque,
                                   &error_abort);
     g_free(fdinfo);
 
diff --git a/util/qemu-config.c b/util/qemu-config.c
index 5325f6bf80..95f61fc883 100644
--- a/util/qemu-config.c
+++ b/util/qemu-config.c
@@ -80,14 +80,8 @@ static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc)
             break;
         }
 
-        if (desc[i].help) {
-            info->has_help = true;
-            info->help = g_strdup(desc[i].help);
-        }
-        if (desc[i].def_value_str) {
-            info->has_q_default = true;
-            info->q_default = g_strdup(desc[i].def_value_str);
-        }
+        info->help = g_strdup(desc[i].help);
+        info->q_default = g_strdup(desc[i].def_value_str);
 
         QAPI_LIST_PREPEND(param_list, info);
     }
@@ -245,8 +239,7 @@ static QemuOptsList machine_opts = {
     }
 };
 
-CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
-                                                          const char *option,
+CommandLineOptionInfoList *qmp_query_command_line_options(const char *option,
                                                           Error **errp)
 {
     CommandLineOptionInfoList *conf_list = NULL;
@@ -254,7 +247,7 @@ CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
     int i;
 
     for (i = 0; vm_config_groups[i] != NULL; i++) {
-        if (!has_option || !strcmp(option, vm_config_groups[i]->name)) {
+        if (!option || !strcmp(option, vm_config_groups[i]->name)) {
             info = g_malloc0(sizeof(*info));
             info->option = g_strdup(vm_config_groups[i]->name);
             if (!strcmp("drive", vm_config_groups[i]->name)) {
@@ -267,7 +260,7 @@ CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
         }
     }
 
-    if (!has_option || !strcmp(option, "machine")) {
+    if (!option || !strcmp(option, "machine")) {
         info = g_malloc0(sizeof(*info));
         info->option = g_strdup("machine");
         info->parameters = query_option_descs(machine_opts.desc);
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index ad5b665212..a34e25fdd7 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/misc.json',
             'qapi/net.json',
             'qapi/pci.json',
             'qapi/qdev.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 18/30] qapi net: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (16 preceding siblings ...)
  2022-11-04 16:06 ` [PATCH v3 17/30] qapi misc: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-05 17:03   ` Philippe Mathieu-Daudé
  2022-11-04 16:07 ` [PATCH v3 19/30] qapi pci: " Markus Armbruster
                   ` (12 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Jason Wang

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/net.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/net/virtio-net.c    |  3 +--
 monitor/hmp-cmds.c     |  1 -
 net/announce.c         |  8 +++----
 net/hub.c              |  2 +-
 net/l2tpv3.c           |  2 +-
 net/net.c              | 25 ++++++++++-----------
 net/slirp.c            |  4 ++--
 net/socket.c           | 18 +++++++--------
 net/tap-win32.c        |  2 +-
 net/tap.c              | 51 +++++++++++++++++++++---------------------
 net/vhost-vdpa.c       |  6 ++---
 scripts/qapi/schema.py |  1 -
 12 files changed, 59 insertions(+), 64 deletions(-)

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index b6903aea54..c75f913c0c 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -447,8 +447,7 @@ static void rxfilter_notify(NetClientState *nc)
 
     if (nc->rxfilter_notify_enabled) {
         char *path = object_get_canonical_path(OBJECT(n->qdev));
-        qapi_event_send_nic_rx_filter_changed(!!n->netclient_name,
-                                              n->netclient_name, path);
+        qapi_event_send_nic_rx_filter_changed(n->netclient_name, path);
         g_free(path);
 
         /* disable event notification to avoid events flooding */
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index c5c8cb593e..45d78ba257 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1104,7 +1104,6 @@ void hmp_announce_self(Monitor *mon, const QDict *qdict)
     params->interfaces = strList_from_comma_list(interfaces_str);
     params->has_interfaces = params->interfaces != NULL;
     params->id = g_strdup(id);
-    params->has_id = !!params->id;
     qmp_announce_self(params, NULL);
     qapi_free_AnnounceParameters(params);
 }
diff --git a/net/announce.c b/net/announce.c
index 62c60192a3..9e99044422 100644
--- a/net/announce.c
+++ b/net/announce.c
@@ -46,7 +46,7 @@ void qemu_announce_timer_del(AnnounceTimer *timer, bool free_named)
     }
     qapi_free_strList(timer->params.interfaces);
     timer->params.interfaces = NULL;
-    if (free_named && timer->params.has_id) {
+    if (free_named && timer->params.id) {
         AnnounceTimer *list_timer;
         /*
          * Sanity check: There should only be one timer on the list with
@@ -157,7 +157,7 @@ static void qemu_announce_self_iter(NICState *nic, void *opaque)
         skip = false;
     }
 
-    trace_qemu_announce_self_iter(timer->params.has_id ? timer->params.id : "_",
+    trace_qemu_announce_self_iter(timer->params.id ?: "_",
                                   nic->ncs->name,
                                   qemu_ether_ntoa(&nic->conf->macaddr), skip);
 
@@ -199,9 +199,9 @@ void qemu_announce_self(AnnounceTimer *timer, AnnounceParameters *params)
 void qmp_announce_self(AnnounceParameters *params, Error **errp)
 {
     AnnounceTimer *named_timer;
-    if (!params->has_id) {
+
+    if (!params->id) {
         params->id = g_strdup("");
-        params->has_id = true;
     }
 
     named_timer = g_datalist_get_data(&named_timers, params->id);
diff --git a/net/hub.c b/net/hub.c
index 67ca534856..4c8a469a50 100644
--- a/net/hub.c
+++ b/net/hub.c
@@ -274,7 +274,7 @@ int net_init_hubport(const Netdev *netdev, const char *name,
     assert(!peer);
     hubport = &netdev->u.hubport;
 
-    if (hubport->has_netdev) {
+    if (hubport->netdev) {
         hubpeer = qemu_find_netdev(hubport->netdev);
         if (!hubpeer) {
             error_setg(errp, "netdev '%s' not found", hubport->netdev);
diff --git a/net/l2tpv3.c b/net/l2tpv3.c
index 350041a0d6..5852e42738 100644
--- a/net/l2tpv3.c
+++ b/net/l2tpv3.c
@@ -578,7 +578,7 @@ int net_init_l2tpv3(const Netdev *netdev,
 
     if (l2tpv3->has_udp && l2tpv3->udp) {
         s->udp = true;
-        if (!(l2tpv3->has_srcport && l2tpv3->has_dstport)) {
+        if (!(l2tpv3->srcport && l2tpv3->dstport)) {
             error_setg(errp, "need both src and dst port for udp");
             goto outerr;
         } else {
diff --git a/net/net.c b/net/net.c
index 840ad9dca5..2d01472998 100644
--- a/net/net.c
+++ b/net/net.c
@@ -964,7 +964,7 @@ static int net_init_nic(const Netdev *netdev, const char *name,
 
     memset(nd, 0, sizeof(*nd));
 
-    if (nic->has_netdev) {
+    if (nic->netdev) {
         nd->netdev = qemu_find_netdev(nic->netdev);
         if (!nd->netdev) {
             error_setg(errp, "netdev '%s' not found", nic->netdev);
@@ -975,19 +975,19 @@ static int net_init_nic(const Netdev *netdev, const char *name,
         nd->netdev = peer;
     }
     nd->name = g_strdup(name);
-    if (nic->has_model) {
+    if (nic->model) {
         nd->model = g_strdup(nic->model);
     }
-    if (nic->has_addr) {
+    if (nic->addr) {
         nd->devaddr = g_strdup(nic->addr);
     }
 
-    if (nic->has_macaddr &&
+    if (nic->macaddr &&
         net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
         error_setg(errp, "invalid syntax for ethernet address");
         return -1;
     }
-    if (nic->has_macaddr &&
+    if (nic->macaddr &&
         is_multicast_ether_addr(nd->macaddr.a)) {
         error_setg(errp,
                    "NIC cannot have multicast MAC address (odd 1st byte)");
@@ -1081,7 +1081,7 @@ static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp)
 
         /* Do not add to a hub if it's a nic with a netdev= parameter. */
         if (netdev->type != NET_CLIENT_DRIVER_NIC ||
-            !netdev->u.nic.has_netdev) {
+            !netdev->u.nic.netdev) {
             peer = net_hub_add_port(0, NULL, NULL);
         }
     }
@@ -1295,8 +1295,7 @@ void print_net_client(Monitor *mon, NetClientState *nc)
     }
 }
 
-RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
-                                      Error **errp)
+RxFilterInfoList *qmp_query_rx_filter(const char *name, Error **errp)
 {
     NetClientState *nc;
     RxFilterInfoList *filter_list = NULL, **tail = &filter_list;
@@ -1304,13 +1303,13 @@ RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
     QTAILQ_FOREACH(nc, &net_clients, next) {
         RxFilterInfo *info;
 
-        if (has_name && strcmp(nc->name, name) != 0) {
+        if (name && strcmp(nc->name, name) != 0) {
             continue;
         }
 
         /* only query rx-filter information of NIC */
         if (nc->info->type != NET_CLIENT_DRIVER_NIC) {
-            if (has_name) {
+            if (name) {
                 error_setg(errp, "net client(%s) isn't a NIC", name);
                 assert(!filter_list);
                 return NULL;
@@ -1327,19 +1326,19 @@ RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
         if (nc->info->query_rx_filter) {
             info = nc->info->query_rx_filter(nc);
             QAPI_LIST_APPEND(tail, info);
-        } else if (has_name) {
+        } else if (name) {
             error_setg(errp, "net client(%s) doesn't support"
                        " rx-filter querying", name);
             assert(!filter_list);
             return NULL;
         }
 
-        if (has_name) {
+        if (name) {
             break;
         }
     }
 
-    if (filter_list == NULL && has_name) {
+    if (filter_list == NULL && name) {
         error_setg(errp, "invalid net client name: %s", name);
     }
 
diff --git a/net/slirp.c b/net/slirp.c
index 14a8d59277..2ee3f1a0d7 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -1153,8 +1153,8 @@ int net_init_slirp(const Netdev *netdev, const char *name,
         ipv6 = 0;
     }
 
-    vnet = user->has_net ? g_strdup(user->net) :
-           user->has_ip  ? g_strdup_printf("%s/24", user->ip) :
+    vnet = user->net ? g_strdup(user->net) :
+           user->ip  ? g_strdup_printf("%s/24", user->ip) :
            NULL;
 
     dnssearch = slirp_dnssearch(user->dnssearch);
diff --git a/net/socket.c b/net/socket.c
index 4944bb70d5..79a3463c0e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -705,19 +705,19 @@ int net_init_socket(const Netdev *netdev, const char *name,
     assert(netdev->type == NET_CLIENT_DRIVER_SOCKET);
     sock = &netdev->u.socket;
 
-    if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast +
-        sock->has_udp != 1) {
+    if (!!sock->fd + !!sock->listen + !!sock->connect + !!sock->mcast +
+        !!sock->udp != 1) {
         error_setg(errp, "exactly one of listen=, connect=, mcast= or udp="
                    " is required");
         return -1;
     }
 
-    if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) {
+    if (sock->localaddr && !sock->mcast && !sock->udp) {
         error_setg(errp, "localaddr= is only valid with mcast= or udp=");
         return -1;
     }
 
-    if (sock->has_fd) {
+    if (sock->fd) {
         int fd, ret;
 
         fd = monitor_fd_param(monitor_cur(), sock->fd, errp);
@@ -737,7 +737,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
         return 0;
     }
 
-    if (sock->has_listen) {
+    if (sock->listen) {
         if (net_socket_listen_init(peer, "socket", name, sock->listen, errp)
             < 0) {
             return -1;
@@ -745,7 +745,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
         return 0;
     }
 
-    if (sock->has_connect) {
+    if (sock->connect) {
         if (net_socket_connect_init(peer, "socket", name, sock->connect, errp)
             < 0) {
             return -1;
@@ -753,7 +753,7 @@ int net_init_socket(const Netdev *netdev, const char *name,
         return 0;
     }
 
-    if (sock->has_mcast) {
+    if (sock->mcast) {
         /* if sock->localaddr is missing, it has been initialized to "all bits
          * zero" */
         if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
@@ -763,8 +763,8 @@ int net_init_socket(const Netdev *netdev, const char *name,
         return 0;
     }
 
-    assert(sock->has_udp);
-    if (!sock->has_localaddr) {
+    assert(sock->udp);
+    if (!sock->localaddr) {
         error_setg(errp, "localaddr= is mandatory with udp=");
         return -1;
     }
diff --git a/net/tap-win32.c b/net/tap-win32.c
index a49c28ba5d..f327d62ab0 100644
--- a/net/tap-win32.c
+++ b/net/tap-win32.c
@@ -807,7 +807,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
     assert(netdev->type == NET_CLIENT_DRIVER_TAP);
     tap = &netdev->u.tap;
 
-    if (!tap->has_ifname) {
+    if (!tap->ifname) {
         error_report("tap: no interface name");
         return -1;
     }
diff --git a/net/tap.c b/net/tap.c
index 1210a0436d..e28ceb078f 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -611,8 +611,8 @@ int net_init_bridge(const Netdev *netdev, const char *name,
 
     assert(netdev->type == NET_CLIENT_DRIVER_BRIDGE);
     bridge = &netdev->u.bridge;
-    helper = bridge->has_helper ? bridge->helper : NULL;
-    br     = bridge->has_br     ? bridge->br     : DEFAULT_BRIDGE_INTERFACE;
+    helper = bridge->helper;
+    br     = bridge->br ?: DEFAULT_BRIDGE_INTERFACE;
 
     fd = net_bridge_run_helper(helper, br, errp);
     if (fd == -1) {
@@ -688,9 +688,9 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
         goto failed;
     }
 
-    if (tap->has_fd || tap->has_fds) {
+    if (tap->fd || tap->fds) {
         qemu_set_info_str(&s->nc, "fd=%d", fd);
-    } else if (tap->has_helper) {
+    } else if (tap->helper) {
         qemu_set_info_str(&s->nc, "helper=%s", tap->helper);
     } else {
         qemu_set_info_str(&s->nc, "ifname=%s,script=%s,downscript=%s", ifname,
@@ -812,21 +812,21 @@ int net_init_tap(const Netdev *netdev, const char *name,
     assert(netdev->type == NET_CLIENT_DRIVER_TAP);
     tap = &netdev->u.tap;
     queues = tap->has_queues ? tap->queues : 1;
-    vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
-    script = tap->has_script ? tap->script : NULL;
-    downscript = tap->has_downscript ? tap->downscript : NULL;
+    vhostfdname = tap->vhostfd;
+    script = tap->script;
+    downscript = tap->downscript;
 
     /* QEMU hubs do not support multiqueue tap, in this case peer is set.
      * For -netdev, peer is always NULL. */
-    if (peer && (tap->has_queues || tap->has_fds || tap->has_vhostfds)) {
+    if (peer && (tap->has_queues || tap->fds || tap->vhostfds)) {
         error_setg(errp, "Multiqueue tap cannot be used with hubs");
         return -1;
     }
 
-    if (tap->has_fd) {
-        if (tap->has_ifname || tap->has_script || tap->has_downscript ||
-            tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
-            tap->has_fds || tap->has_vhostfds) {
+    if (tap->fd) {
+        if (tap->ifname || tap->script || tap->downscript ||
+            tap->has_vnet_hdr || tap->helper || tap->has_queues ||
+            tap->fds || tap->vhostfds) {
             error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
                        "helper=, queues=, fds=, and vhostfds= "
                        "are invalid with fd=");
@@ -859,14 +859,14 @@ int net_init_tap(const Netdev *netdev, const char *name,
             close(fd);
             return -1;
         }
-    } else if (tap->has_fds) {
+    } else if (tap->fds) {
         char **fds;
         char **vhost_fds;
         int nfds = 0, nvhosts = 0;
 
-        if (tap->has_ifname || tap->has_script || tap->has_downscript ||
-            tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
-            tap->has_vhostfd) {
+        if (tap->ifname || tap->script || tap->downscript ||
+            tap->has_vnet_hdr || tap->helper || tap->has_queues ||
+            tap->vhostfd) {
             error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
                        "helper=, queues=, and vhostfd= "
                        "are invalid with fds=");
@@ -877,7 +877,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
         vhost_fds = g_new0(char *, MAX_TAP_QUEUES);
 
         nfds = get_fds(tap->fds, fds, MAX_TAP_QUEUES);
-        if (tap->has_vhostfds) {
+        if (tap->vhostfds) {
             nvhosts = get_fds(tap->vhostfds, vhost_fds, MAX_TAP_QUEUES);
             if (nfds != nvhosts) {
                 error_setg(errp, "The number of fds passed does not match "
@@ -916,7 +916,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
 
             net_init_tap_one(tap, peer, "tap", name, ifname,
                              script, downscript,
-                             tap->has_vhostfds ? vhost_fds[i] : NULL,
+                             tap->vhostfds ? vhost_fds[i] : NULL,
                              vnet_hdr, fd, &err);
             if (err) {
                 error_propagate(errp, err);
@@ -935,17 +935,16 @@ free_fail:
         g_free(fds);
         g_free(vhost_fds);
         return ret;
-    } else if (tap->has_helper) {
-        if (tap->has_ifname || tap->has_script || tap->has_downscript ||
-            tap->has_vnet_hdr || tap->has_queues || tap->has_vhostfds) {
+    } else if (tap->helper) {
+        if (tap->ifname || tap->script || tap->downscript ||
+            tap->has_vnet_hdr || tap->has_queues || tap->vhostfds) {
             error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
                        "queues=, and vhostfds= are invalid with helper=");
             return -1;
         }
 
         fd = net_bridge_run_helper(tap->helper,
-                                   tap->has_br ?
-                                   tap->br : DEFAULT_BRIDGE_INTERFACE,
+                                   tap->br ?: DEFAULT_BRIDGE_INTERFACE,
                                    errp);
         if (fd == -1) {
             return -1;
@@ -972,7 +971,7 @@ free_fail:
     } else {
         g_autofree char *default_script = NULL;
         g_autofree char *default_downscript = NULL;
-        if (tap->has_vhostfds) {
+        if (tap->vhostfds) {
             error_setg(errp, "vhostfds= is invalid if fds= wasn't specified");
             return -1;
         }
@@ -985,7 +984,7 @@ free_fail:
                                  get_relocated_path(DEFAULT_NETWORK_DOWN_SCRIPT);
         }
 
-        if (tap->has_ifname) {
+        if (tap->ifname) {
             pstrcpy(ifname, sizeof ifname, tap->ifname);
         } else {
             ifname[0] = '\0';
@@ -998,7 +997,7 @@ free_fail:
                 return -1;
             }
 
-            if (queues > 1 && i == 0 && !tap->has_ifname) {
+            if (queues > 1 && i == 0 && !tap->ifname) {
                 if (tap_fd_get_ifname(fd, ifname)) {
                     error_setg(errp, "Fail to get ifname");
                     close(fd);
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index e370ecb8eb..f9dee429d8 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -634,19 +634,19 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
 
     assert(netdev->type == NET_CLIENT_DRIVER_VHOST_VDPA);
     opts = &netdev->u.vhost_vdpa;
-    if (!opts->has_vhostdev && !opts->has_vhostfd) {
+    if (!opts->vhostdev && !opts->vhostfd) {
         error_setg(errp,
                    "vhost-vdpa: neither vhostdev= nor vhostfd= was specified");
         return -1;
     }
 
-    if (opts->has_vhostdev && opts->has_vhostfd) {
+    if (opts->vhostdev && opts->vhostfd) {
         error_setg(errp,
                    "vhost-vdpa: vhostdev= and vhostfd= are mutually exclusive");
         return -1;
     }
 
-    if (opts->has_vhostdev) {
+    if (opts->vhostdev) {
         vdpa_device_fd = qemu_open(opts->vhostdev, O_RDWR, errp);
         if (vdpa_device_fd == -1) {
             return -errno;
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index a34e25fdd7..930dffd780 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/net.json',
             'qapi/pci.json',
             'qapi/qdev.json',
             'qapi/qom.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 19/30] qapi pci: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (17 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 18/30] qapi net: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 20/30] qapi qdev qom: " Markus Armbruster
                   ` (11 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Michael S . Tsirkin,
	Marcel Apfelbaum, Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/pci.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/pci/pci.c           | 2 --
 monitor/hmp-cmds.c     | 6 +++---
 scripts/qapi/schema.py | 1 -
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 2f450f6a72..e6292d8060 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1879,7 +1879,6 @@ static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
     info->class_info->q_class = class;
     desc = get_class_desc(class);
     if (desc->desc) {
-        info->class_info->has_desc = true;
         info->class_info->desc = g_strdup(desc->desc);
     }
 
@@ -1897,7 +1896,6 @@ static PciDeviceInfo *qmp_query_pci_device(PCIDevice *dev, PCIBus *bus,
 
     type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
     if (type == PCI_HEADER_TYPE_BRIDGE) {
-        info->has_pci_bridge = true;
         info->pci_bridge = qmp_query_pci_bridge(dev, bus, bus_num);
     } else if (type == PCI_HEADER_TYPE_NORMAL) {
         info->id->has_subsystem = info->id->has_subsystem_vendor = true;
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 45d78ba257..ae5ebe765a 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -709,7 +709,7 @@ static void hmp_info_pci_device(Monitor *mon, const PciDeviceInfo *dev)
                    dev->slot, dev->function);
     monitor_printf(mon, "    ");
 
-    if (dev->class_info->has_desc) {
+    if (dev->class_info->desc) {
         monitor_puts(mon, dev->class_info->desc);
     } else {
         monitor_printf(mon, "Class %04" PRId64, dev->class_info->q_class);
@@ -727,7 +727,7 @@ static void hmp_info_pci_device(Monitor *mon, const PciDeviceInfo *dev)
                        dev->irq, (char)('A' + dev->irq_pin - 1));
     }
 
-    if (dev->has_pci_bridge) {
+    if (dev->pci_bridge) {
         monitor_printf(mon, "      BUS %" PRId64 ".\n",
                        dev->pci_bridge->bus->number);
         monitor_printf(mon, "      secondary bus %" PRId64 ".\n",
@@ -773,7 +773,7 @@ static void hmp_info_pci_device(Monitor *mon, const PciDeviceInfo *dev)
 
     monitor_printf(mon, "      id \"%s\"\n", dev->qdev_id);
 
-    if (dev->has_pci_bridge) {
+    if (dev->pci_bridge) {
         if (dev->pci_bridge->has_devices) {
             PciDeviceInfoList *cdev;
             for (cdev = dev->pci_bridge->devices; cdev; cdev = cdev->next) {
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 930dffd780..388b90812b 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/pci.json',
             'qapi/qdev.json',
             'qapi/qom.json',
             'qapi/replay.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 20/30] qapi qdev qom: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (18 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 19/30] qapi pci: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-05 17:06   ` Philippe Mathieu-Daudé
  2022-11-04 16:07 ` [PATCH v3 21/30] qapi replay: " Markus Armbruster
                   ` (10 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Paolo Bonzini,
	Daniel P . Berrangé,
	Eduardo Habkost

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/qdev.json and
qapi/qom.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Eduardo Habkost <eduardo@habkost.net>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/acpi/memory_hotplug.c    | 2 +-
 hw/core/qdev.c              | 2 +-
 hw/ppc/spapr.c              | 2 +-
 hw/ppc/spapr_drc.c          | 3 +--
 qom/qom-qmp-cmds.c          | 7 +------
 stubs/qdev.c                | 6 ++----
 tests/qtest/fuzz/qos_fuzz.c | 3 +--
 scripts/qapi/schema.py      | 2 --
 8 files changed, 8 insertions(+), 19 deletions(-)

diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index a7476330a8..d926f4f77d 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -185,7 +185,7 @@ static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
                  */
                 qapi_event_send_mem_unplug_error(dev->id ? : "",
                                                  error_get_pretty(local_err));
-                qapi_event_send_device_unplug_guest_error(!!dev->id, dev->id,
+                qapi_event_send_device_unplug_guest_error(dev->id,
                                                           dev->canonical_path);
                 error_free(local_err);
                 break;
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 0806d8fcaa..459266aceb 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -744,7 +744,7 @@ static void device_finalize(Object *obj)
     if (dev->pending_deleted_event) {
         g_assert(dev->canonical_path);
 
-        qapi_event_send_device_deleted(!!dev->id, dev->id, dev->canonical_path);
+        qapi_event_send_device_deleted(dev->id, dev->canonical_path);
         g_free(dev->canonical_path);
         dev->canonical_path = NULL;
     }
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 66b414d2e9..dc850032ae 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3728,7 +3728,7 @@ void spapr_memory_unplug_rollback(SpaprMachineState *spapr, DeviceState *dev)
 
     qapi_event_send_mem_unplug_error(dev->id ? : "", qapi_error);
 
-    qapi_event_send_device_unplug_guest_error(!!dev->id, dev->id,
+    qapi_event_send_device_unplug_guest_error(dev->id,
                                               dev->canonical_path);
 }
 
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 76bc5d42a0..4923435a8b 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -175,8 +175,7 @@ static uint32_t drc_unisolate_logical(SpaprDrc *drc)
                              "for device %s", drc->dev->id);
             }
 
-            qapi_event_send_device_unplug_guest_error(!!drc->dev->id,
-                                                      drc->dev->id,
+            qapi_event_send_device_unplug_guest_error(drc->dev->id,
                                                       drc->dev->canonical_path);
         }
 
diff --git a/qom/qom-qmp-cmds.c b/qom/qom-qmp-cmds.c
index 2e63a4c184..7c087299de 100644
--- a/qom/qom-qmp-cmds.c
+++ b/qom/qom-qmp-cmds.c
@@ -99,15 +99,13 @@ static void qom_list_types_tramp(ObjectClass *klass, void *data)
     info->name = g_strdup(object_class_get_name(klass));
     info->has_abstract = info->abstract = object_class_is_abstract(klass);
     if (parent) {
-        info->has_parent = true;
         info->parent = g_strdup(object_class_get_name(parent));
     }
 
     QAPI_LIST_PREPEND(*pret, info);
 }
 
-ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
-                                       const char *implements,
+ObjectTypeInfoList *qmp_qom_list_types(const char *implements,
                                        bool has_abstract,
                                        bool abstract,
                                        Error **errp)
@@ -168,10 +166,8 @@ ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
         info = g_new0(ObjectPropertyInfo, 1);
         info->name = g_strdup(prop->name);
         info->type = g_strdup(prop->type);
-        info->has_description = !!prop->description;
         info->description = g_strdup(prop->description);
         info->default_value = qobject_ref(prop->defval);
-        info->has_default_value = !!info->default_value;
 
         QAPI_LIST_PREPEND(prop_list, info);
     }
@@ -215,7 +211,6 @@ ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
         info = g_malloc0(sizeof(*info));
         info->name = g_strdup(prop->name);
         info->type = g_strdup(prop->type);
-        info->has_description = !!prop->description;
         info->description = g_strdup(prop->description);
 
         QAPI_LIST_PREPEND(prop_list, info);
diff --git a/stubs/qdev.c b/stubs/qdev.c
index 187659f707..6869f6f90a 100644
--- a/stubs/qdev.c
+++ b/stubs/qdev.c
@@ -15,15 +15,13 @@
 #include "qemu/osdep.h"
 #include "qapi/qapi-events-qdev.h"
 
-void qapi_event_send_device_deleted(bool has_device,
-                                    const char *device,
+void qapi_event_send_device_deleted(const char *device,
                                     const char *path)
 {
     /* Nothing to do. */
 }
 
-void qapi_event_send_device_unplug_guest_error(bool has_device,
-                                               const char *device,
+void qapi_event_send_device_unplug_guest_error(const char *device,
                                                const char *path)
 {
     /* Nothing to do. */
diff --git a/tests/qtest/fuzz/qos_fuzz.c b/tests/qtest/fuzz/qos_fuzz.c
index 3a3d9c16dd..e403d373a0 100644
--- a/tests/qtest/fuzz/qos_fuzz.c
+++ b/tests/qtest/fuzz/qos_fuzz.c
@@ -50,8 +50,7 @@ static void qos_set_machines_devices_available(void)
     machines_apply_to_node(mach_info);
     qapi_free_MachineInfoList(mach_info);
 
-    type_info = qmp_qom_list_types(true, "device", true, true,
-                                   &error_abort);
+    type_info = qmp_qom_list_types("device", true, true, &error_abort);
     types_apply_to_node(type_info);
     qapi_free_ObjectTypeInfoList(type_info);
 }
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 388b90812b..c74c26bda3 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,8 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/qdev.json',
-            'qapi/qom.json',
             'qapi/replay.json',
             'qapi/rocker.json',
             'qapi/run-state.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 21/30] qapi replay: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (19 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 20/30] qapi qdev qom: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 22/30] qapi rocker: " Markus Armbruster
                   ` (9 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Pavel Dovgalyuk, Paolo Bonzini,
	Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/replay.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 replay/replay-debugging.c | 1 -
 scripts/qapi/schema.py    | 1 -
 2 files changed, 2 deletions(-)

diff --git a/replay/replay-debugging.c b/replay/replay-debugging.c
index 1cde50e9f3..3e60549a4a 100644
--- a/replay/replay-debugging.c
+++ b/replay/replay-debugging.c
@@ -50,7 +50,6 @@ ReplayInfo *qmp_query_replay(Error **errp)
     retval->mode = replay_mode;
     if (replay_get_filename()) {
         retval->filename = g_strdup(replay_get_filename());
-        retval->has_filename = true;
     }
     retval->icount = replay_get_current_icount();
     return retval;
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index c74c26bda3..2b6644f1c3 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/replay.json',
             'qapi/rocker.json',
             'qapi/run-state.json',
             'qapi/stats.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 22/30] qapi rocker: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (20 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 21/30] qapi replay: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-05 17:08   ` Philippe Mathieu-Daudé
  2022-11-04 16:07 ` [PATCH v3 23/30] qapi run-state: " Markus Armbruster
                   ` (8 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Jiri Pirko

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/rocker.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/net/rocker/rocker_of_dpa.c | 13 ++-----------
 monitor/hmp-cmds.c            | 22 +++++++++++-----------
 scripts/qapi/schema.py        |  1 -
 3 files changed, 13 insertions(+), 23 deletions(-)

diff --git a/hw/net/rocker/rocker_of_dpa.c b/hw/net/rocker/rocker_of_dpa.c
index b3b8c5bb6d..dfe4754469 100644
--- a/hw/net/rocker/rocker_of_dpa.c
+++ b/hw/net/rocker/rocker_of_dpa.c
@@ -2348,23 +2348,19 @@ static void of_dpa_flow_fill(void *cookie, void *value, void *user_data)
 
     if (memcmp(key->eth.src.a, zero_mac.a, ETH_ALEN) ||
         memcmp(mask->eth.src.a, zero_mac.a, ETH_ALEN)) {
-        nkey->has_eth_src = true;
         nkey->eth_src = qemu_mac_strdup_printf(key->eth.src.a);
     }
 
-    if (nkey->has_eth_src && memcmp(mask->eth.src.a, ff_mac.a, ETH_ALEN)) {
-        nmask->has_eth_src = true;
+    if (nkey->eth_src && memcmp(mask->eth.src.a, ff_mac.a, ETH_ALEN)) {
         nmask->eth_src = qemu_mac_strdup_printf(mask->eth.src.a);
     }
 
     if (memcmp(key->eth.dst.a, zero_mac.a, ETH_ALEN) ||
         memcmp(mask->eth.dst.a, zero_mac.a, ETH_ALEN)) {
-        nkey->has_eth_dst = true;
         nkey->eth_dst = qemu_mac_strdup_printf(key->eth.dst.a);
     }
 
-    if (nkey->has_eth_dst && memcmp(mask->eth.dst.a, ff_mac.a, ETH_ALEN)) {
-        nmask->has_eth_dst = true;
+    if (nkey->eth_dst && memcmp(mask->eth.dst.a, ff_mac.a, ETH_ALEN)) {
         nmask->eth_dst = qemu_mac_strdup_printf(mask->eth.dst.a);
     }
 
@@ -2400,7 +2396,6 @@ static void of_dpa_flow_fill(void *cookie, void *value, void *user_data)
             if (key->ipv4.addr.dst || mask->ipv4.addr.dst) {
                 char *dst = inet_ntoa(*(struct in_addr *)&key->ipv4.addr.dst);
                 int dst_len = of_dpa_mask2prefix(mask->ipv4.addr.dst);
-                nkey->has_ip_dst = true;
                 nkey->ip_dst = g_strdup_printf("%s/%d", dst, dst_len);
             }
             break;
@@ -2501,12 +2496,10 @@ static void of_dpa_group_fill(void *key, void *value, void *user_data)
             ngroup->set_vlan_id = ntohs(group->l2_rewrite.vlan_id);
         }
         if (memcmp(group->l2_rewrite.src_mac.a, zero_mac.a, ETH_ALEN)) {
-            ngroup->has_set_eth_src = true;
             ngroup->set_eth_src =
                 qemu_mac_strdup_printf(group->l2_rewrite.src_mac.a);
         }
         if (memcmp(group->l2_rewrite.dst_mac.a, zero_mac.a, ETH_ALEN)) {
-            ngroup->has_set_eth_dst = true;
             ngroup->set_eth_dst =
                 qemu_mac_strdup_printf(group->l2_rewrite.dst_mac.a);
         }
@@ -2532,12 +2525,10 @@ static void of_dpa_group_fill(void *key, void *value, void *user_data)
             ngroup->set_vlan_id = ntohs(group->l3_unicast.vlan_id);
         }
         if (memcmp(group->l3_unicast.src_mac.a, zero_mac.a, ETH_ALEN)) {
-            ngroup->has_set_eth_src = true;
             ngroup->set_eth_src =
                 qemu_mac_strdup_printf(group->l3_unicast.src_mac.a);
         }
         if (memcmp(group->l3_unicast.dst_mac.a, zero_mac.a, ETH_ALEN)) {
-            ngroup->has_set_eth_dst = true;
             ngroup->set_eth_dst =
                 qemu_mac_strdup_printf(group->l3_unicast.dst_mac.a);
         }
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index ae5ebe765a..a41f94a34a 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -2010,35 +2010,35 @@ void hmp_rocker_of_dpa_flows(Monitor *mon, const QDict *qdict)
             }
         }
 
-        if (key->has_eth_src) {
+        if (key->eth_src) {
             if ((strcmp(key->eth_src, "01:00:00:00:00:00") == 0) &&
-                (mask->has_eth_src) &&
+                mask->eth_src &&
                 (strcmp(mask->eth_src, "01:00:00:00:00:00") == 0)) {
                 monitor_printf(mon, " src <any mcast/bcast>");
             } else if ((strcmp(key->eth_src, "00:00:00:00:00:00") == 0) &&
-                (mask->has_eth_src) &&
+                mask->eth_src &&
                 (strcmp(mask->eth_src, "01:00:00:00:00:00") == 0)) {
                 monitor_printf(mon, " src <any ucast>");
             } else {
                 monitor_printf(mon, " src %s", key->eth_src);
-                if (mask->has_eth_src) {
+                if (mask->eth_src) {
                     monitor_printf(mon, "(%s)", mask->eth_src);
                 }
             }
         }
 
-        if (key->has_eth_dst) {
+        if (key->eth_dst) {
             if ((strcmp(key->eth_dst, "01:00:00:00:00:00") == 0) &&
-                (mask->has_eth_dst) &&
+                mask->eth_dst &&
                 (strcmp(mask->eth_dst, "01:00:00:00:00:00") == 0)) {
                 monitor_printf(mon, " dst <any mcast/bcast>");
             } else if ((strcmp(key->eth_dst, "00:00:00:00:00:00") == 0) &&
-                (mask->has_eth_dst) &&
+                mask->eth_dst &&
                 (strcmp(mask->eth_dst, "01:00:00:00:00:00") == 0)) {
                 monitor_printf(mon, " dst <any ucast>");
             } else {
                 monitor_printf(mon, " dst %s", key->eth_dst);
-                if (mask->has_eth_dst) {
+                if (mask->eth_dst) {
                     monitor_printf(mon, "(%s)", mask->eth_dst);
                 }
             }
@@ -2058,7 +2058,7 @@ void hmp_rocker_of_dpa_flows(Monitor *mon, const QDict *qdict)
             }
         }
 
-        if (key->has_ip_dst) {
+        if (key->ip_dst) {
             monitor_printf(mon, " dst %s", key->ip_dst);
         }
 
@@ -2137,7 +2137,7 @@ void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict)
                            group->set_vlan_id & VLAN_VID_MASK);
         }
 
-        if (group->has_set_eth_src) {
+        if (group->set_eth_src) {
             if (!set) {
                 set = true;
                 monitor_printf(mon, " set");
@@ -2145,7 +2145,7 @@ void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict)
             monitor_printf(mon, " src %s", group->set_eth_src);
         }
 
-        if (group->has_set_eth_dst) {
+        if (group->set_eth_dst) {
             if (!set) {
                 monitor_printf(mon, " set");
             }
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 2b6644f1c3..1b3195bc87 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/rocker.json',
             'qapi/run-state.json',
             'qapi/stats.json',
             'qapi/tpm.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 23/30] qapi run-state: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (21 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 22/30] qapi rocker: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 24/30] qapi stats: " Markus Armbruster
                   ` (7 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Paolo Bonzini, Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/run-state.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Drop a superfluous conditional around
qapi_free_GuestPanicInformation() while there.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 softmmu/runstate.c     | 18 +++++-------------
 scripts/qapi/schema.py |  1 -
 2 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/softmmu/runstate.c b/softmmu/runstate.c
index 3dd83d5e5d..cab9f6fc07 100644
--- a/softmmu/runstate.c
+++ b/softmmu/runstate.c
@@ -484,18 +484,15 @@ void qemu_system_guest_panicked(GuestPanicInformation *info)
      */
     if (panic_action == PANIC_ACTION_PAUSE
         || (panic_action == PANIC_ACTION_SHUTDOWN && shutdown_action == SHUTDOWN_ACTION_PAUSE)) {
-        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
-                                        !!info, info);
+        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, info);
         vm_stop(RUN_STATE_GUEST_PANICKED);
     } else if (panic_action == PANIC_ACTION_SHUTDOWN ||
                panic_action == PANIC_ACTION_EXIT_FAILURE) {
-        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
-                                       !!info, info);
+        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF, info);
         vm_stop(RUN_STATE_GUEST_PANICKED);
         qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
     } else {
-        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_RUN,
-                                        !!info, info);
+        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_RUN, info);
     }
 
     if (info) {
@@ -522,13 +519,8 @@ void qemu_system_guest_panicked(GuestPanicInformation *info)
 void qemu_system_guest_crashloaded(GuestPanicInformation *info)
 {
     qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
-
-    qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
-                                   !!info, info);
-
-    if (info) {
-        qapi_free_GuestPanicInformation(info);
-    }
+    qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN, info);
+    qapi_free_GuestPanicInformation(info);
 }
 
 void qemu_system_reset_request(ShutdownCause reason)
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 1b3195bc87..f405ab7f49 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/run-state.json',
             'qapi/stats.json',
             'qapi/tpm.json',
             'qapi/transaction.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 24/30] qapi stats: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (22 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 23/30] qapi run-state: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 25/30] qapi tpm: " Markus Armbruster
                   ` (6 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Mark Kanda, Paolo Bonzini,
	Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/stats.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Mark Kanda <mark.kanda@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 monitor/qmp-cmds.c     | 5 +----
 scripts/qapi/schema.py | 1 -
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index f8ab5dd50f..3bf2ae9bb7 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -560,10 +560,7 @@ void add_stats_entry(StatsResultList **stats_results, StatsProvider provider,
     StatsResult *entry = g_new0(StatsResult, 1);
 
     entry->provider = provider;
-    if (qom_path) {
-        entry->has_qom_path = true;
-        entry->qom_path = g_strdup(qom_path);
-    }
+    entry->qom_path = g_strdup(qom_path);
     entry->stats = stats_list;
 
     QAPI_LIST_PREPEND(*stats_results, entry);
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index f405ab7f49..0544037e71 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/stats.json',
             'qapi/tpm.json',
             'qapi/transaction.json',
             'qapi/ui.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 25/30] qapi tpm: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (23 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 24/30] qapi stats: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 26/30] qapi transaction: " Markus Armbruster
                   ` (5 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Stefan Berger, Stefan Berger

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/tpm.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 backends/tpm/tpm_passthrough.c | 2 --
 monitor/hmp-cmds.c             | 8 ++++----
 scripts/qapi/schema.py         | 1 -
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/backends/tpm/tpm_passthrough.c b/backends/tpm/tpm_passthrough.c
index 5a2f74db1b..179697a3a9 100644
--- a/backends/tpm/tpm_passthrough.c
+++ b/backends/tpm/tpm_passthrough.c
@@ -259,12 +259,10 @@ tpm_passthrough_handle_device_opts(TPMPassthruState *tpm_pt, QemuOpts *opts)
     value = qemu_opt_get(opts, "cancel-path");
     if (value) {
         tpm_pt->options->cancel_path = g_strdup(value);
-        tpm_pt->options->has_cancel_path = true;
     }
 
     value = qemu_opt_get(opts, "path");
     if (value) {
-        tpm_pt->options->has_path = true;
         tpm_pt->options->path = g_strdup(value);
     }
 
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index a41f94a34a..3ada344d77 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -864,10 +864,10 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict)
         case TPM_TYPE_PASSTHROUGH:
             tpo = ti->options->u.passthrough.data;
             monitor_printf(mon, "%s%s%s%s",
-                           tpo->has_path ? ",path=" : "",
-                           tpo->has_path ? tpo->path : "",
-                           tpo->has_cancel_path ? ",cancel-path=" : "",
-                           tpo->has_cancel_path ? tpo->cancel_path : "");
+                           tpo->path ? ",path=" : "",
+                           tpo->path ?: "",
+                           tpo->cancel_path ? ",cancel-path=" : "",
+                           tpo->cancel_path ?: "");
             break;
         case TPM_TYPE_EMULATOR:
             teo = ti->options->u.emulator.data;
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 0544037e71..f0726af876 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/tpm.json',
             'qapi/transaction.json',
             'qapi/ui.json',
             'qapi/virtio.json',
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 26/30] qapi transaction: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (24 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 25/30] qapi tpm: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-05 17:08   ` Philippe Mathieu-Daudé
  2022-11-04 16:07 ` [PATCH v3 27/30] qapi ui: " Markus Armbruster
                   ` (4 subsequent siblings)
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Kevin Wolf, Hanna Reitz, qemu-block

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/transaction.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

In qmp_transaction(), we can't just drop parameter @has_props, since
it's used to track whether @props needs to be freed.  Replace it by a
local variable.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Hanna Reitz <hreitz@redhat.com>
Cc: qemu-block@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 blockdev.c             | 4 ++--
 scripts/qapi/schema.py | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 59753400e9..75eef8535e 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1048,7 +1048,7 @@ static void blockdev_do_action(TransactionAction *action, Error **errp)
 
     list.value = action;
     list.next = NULL;
-    qmp_transaction(&list, false, NULL, errp);
+    qmp_transaction(&list, NULL, errp);
 }
 
 void qmp_blockdev_snapshot_sync(const char *device, const char *node_name,
@@ -2289,11 +2289,11 @@ static TransactionProperties *get_transaction_properties(
  * Always run under BQL.
  */
 void qmp_transaction(TransactionActionList *dev_list,
-                     bool has_props,
                      struct TransactionProperties *props,
                      Error **errp)
 {
     TransactionActionList *dev_entry = dev_list;
+    bool has_props = !!props;
     JobTxn *block_job_txn = NULL;
     BlkActionState *state, *next;
     Error *local_err = NULL;
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index f0726af876..3673296ad8 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/transaction.json',
             'qapi/ui.json',
             'qapi/virtio.json',
             'qga/qapi-schema.json']
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 27/30] qapi ui: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (25 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 26/30] qapi transaction: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 28/30] qapi virtio: " Markus Armbruster
                   ` (3 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Gerd Hoffmann, Daniel P . Berrangé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/ui.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 monitor/hmp-cmds.c     | 12 ++++--------
 ui/console.c           |  4 ++--
 ui/input.c             |  4 ++--
 ui/spice-core.c        |  5 -----
 ui/vnc.c               | 10 ----------
 scripts/qapi/schema.py |  1 -
 6 files changed, 8 insertions(+), 28 deletions(-)

diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 3ada344d77..263b7762ab 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -548,11 +548,9 @@ static void hmp_info_vnc_clients(Monitor *mon, VncClientInfoList *client)
 
         hmp_info_VncBasicInfo(mon, qapi_VncClientInfo_base(cinfo), "Client");
         monitor_printf(mon, "    x509_dname: %s\n",
-                       cinfo->has_x509_dname ?
-                       cinfo->x509_dname : "none");
+                       cinfo->x509_dname ?: "none");
         monitor_printf(mon, "    sasl_username: %s\n",
-                       cinfo->has_sasl_username ?
-                       cinfo->sasl_username : "none");
+                       cinfo->sasl_username ?: "none");
 
         client = client->next;
     }
@@ -597,7 +595,7 @@ void hmp_info_vnc(Monitor *mon, const QDict *qdict)
             hmp_info_vnc_authcrypt(mon, "  ", info->auth,
                                info->has_vencrypt ? &info->vencrypt : NULL);
         }
-        if (info->has_display) {
+        if (info->display) {
             monitor_printf(mon, "  Display: %s\n", info->display);
         }
         info2l = info2l->next;
@@ -1401,7 +1399,6 @@ void hmp_set_password(Monitor *mon, const QDict *qdict)
     }
 
     if (opts.protocol == DISPLAY_PROTOCOL_VNC) {
-        opts.u.vnc.has_display = !!display;
         opts.u.vnc.display = (char *)display;
     }
 
@@ -1429,7 +1426,6 @@ void hmp_expire_password(Monitor *mon, const QDict *qdict)
     }
 
     if (opts.protocol == DISPLAY_PROTOCOL_VNC) {
-        opts.u.vnc.has_display = !!display;
         opts.u.vnc.display = (char *)display;
     }
 
@@ -1714,7 +1710,7 @@ hmp_screendump(Monitor *mon, const QDict *qdict)
         goto end;
     }
 
-    qmp_screendump(filename, id != NULL, id, id != NULL, head,
+    qmp_screendump(filename, id, id != NULL, head,
                    input_format != NULL, format, &err);
 end:
     hmp_handle_error(mon, err);
diff --git a/ui/console.c b/ui/console.c
index 65c117874c..1b1d84dadc 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -407,7 +407,7 @@ static void graphic_hw_update_bh(void *con)
 
 /* Safety: coroutine-only, concurrent-coroutine safe, main thread only */
 void coroutine_fn
-qmp_screendump(const char *filename, bool has_device, const char *device,
+qmp_screendump(const char *filename, const char *device,
                bool has_head, int64_t head,
                bool has_format, ImageFormat format, Error **errp)
 {
@@ -416,7 +416,7 @@ qmp_screendump(const char *filename, bool has_device, const char *device,
     DisplaySurface *surface;
     int fd;
 
-    if (has_device) {
+    if (device) {
         con = qemu_console_lookup_by_device_name(device, has_head ? head : 0,
                                                  errp);
         if (!con) {
diff --git a/ui/input.c b/ui/input.c
index e2a90af889..8f4a87d1d7 100644
--- a/ui/input.c
+++ b/ui/input.c
@@ -124,7 +124,7 @@ qemu_input_find_handler(uint32_t mask, QemuConsole *con)
     return NULL;
 }
 
-void qmp_input_send_event(bool has_device, const char *device,
+void qmp_input_send_event(const char *device,
                           bool has_head, int64_t head,
                           InputEventList *events, Error **errp)
 {
@@ -133,7 +133,7 @@ void qmp_input_send_event(bool has_device, const char *device,
     Error *err = NULL;
 
     con = NULL;
-    if (has_device) {
+    if (device) {
         if (!has_head) {
             head = 0;
         }
diff --git a/ui/spice-core.c b/ui/spice-core.c
index c3ac20ad43..72f8f1681c 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -222,7 +222,6 @@ static void channel_event(int event, SpiceChannelEventInfo *info)
         break;
     case SPICE_CHANNEL_EVENT_INITIALIZED:
         if (auth) {
-            server->has_auth = true;
             server->auth = g_strdup(auth);
         }
         add_channel_info(client, info);
@@ -522,13 +521,9 @@ static SpiceInfo *qmp_query_spice_real(Error **errp)
     port = qemu_opt_get_number(opts, "port", 0);
     tls_port = qemu_opt_get_number(opts, "tls-port", 0);
 
-    info->has_auth = true;
     info->auth = g_strdup(auth);
-
-    info->has_host = true;
     info->host = g_strdup(addr ? addr : "*");
 
-    info->has_compiled_version = true;
     major = (SPICE_SERVER_VERSION & 0xff0000) >> 16;
     minor = (SPICE_SERVER_VERSION & 0xff00) >> 8;
     micro = SPICE_SERVER_VERSION & 0xff;
diff --git a/ui/vnc.c b/ui/vnc.c
index 88f55cbf3c..d9eacad759 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -244,7 +244,6 @@ static VncServerInfo *vnc_server_info_get(VncDisplay *vd)
     info = g_malloc0(sizeof(*info));
     vnc_init_basic_info_from_server_addr(vd->listener->sioc[0],
                                          qapi_VncServerInfo_base(info), &err);
-    info->has_auth = true;
     info->auth = g_strdup(vnc_auth_name(vd));
     if (err) {
         qapi_free_VncServerInfo(info);
@@ -263,13 +262,10 @@ static void vnc_client_cache_auth(VncState *client)
     if (client->tls) {
         client->info->x509_dname =
             qcrypto_tls_session_get_peer_name(client->tls);
-        client->info->has_x509_dname =
-            client->info->x509_dname != NULL;
     }
 #ifdef CONFIG_VNC_SASL
     if (client->sasl.conn &&
         client->sasl.username) {
-        client->info->has_sasl_username = true;
         client->info->sasl_username = g_strdup(client->sasl.username);
     }
 #endif
@@ -341,11 +337,9 @@ static VncClientInfo *qmp_query_vnc_client(const VncState *client)
 
     if (client->tls) {
         info->x509_dname = qcrypto_tls_session_get_peer_name(client->tls);
-        info->has_x509_dname = info->x509_dname != NULL;
     }
 #ifdef CONFIG_VNC_SASL
     if (client->sasl.conn && client->sasl.username) {
-        info->has_sasl_username = true;
         info->sasl_username = g_strdup(client->sasl.username);
     }
 #endif
@@ -426,11 +420,8 @@ VncInfo *qmp_query_vnc(Error **errp)
             abort();
         }
 
-        info->has_host = true;
-        info->has_service = true;
         info->has_family = true;
 
-        info->has_auth = true;
         info->auth = g_strdup(vnc_auth_name(vd));
     }
 
@@ -568,7 +559,6 @@ VncInfo2List *qmp_query_vnc_servers(Error **errp)
         if (vd->dcl.con) {
             dev = DEVICE(object_property_get_link(OBJECT(vd->dcl.con),
                                                   "device", &error_abort));
-            info->has_display = true;
             info->display = g_strdup(dev->id);
         }
         for (i = 0; vd->listener != NULL && i < vd->listener->nsioc; i++) {
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 3673296ad8..fd18f8249b 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/ui.json',
             'qapi/virtio.json',
             'qga/qapi-schema.json']
         if self.info and any(self.info.fname.endswith(mod)
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 28/30] qapi virtio: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (26 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 27/30] qapi ui: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:07 ` [PATCH v3 29/30] qapi qga: " Markus Armbruster
                   ` (2 subsequent siblings)
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Laurent Vivier, Michael S . Tsirkin,
	Philippe Mathieu-Daudé

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/virtio.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Laurent Vivier <lvivier@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/virtio/virtio.c     | 1 -
 monitor/hmp-cmds.c     | 4 ++--
 scripts/qapi/schema.py | 1 -
 3 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 808446b4c9..883bc7064d 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -4664,7 +4664,6 @@ VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
     status->disable_legacy_check = vdev->disable_legacy_check;
     status->bus_name = g_strdup(vdev->bus_name);
     status->use_guest_notifier_mask = vdev->use_guest_notifier_mask;
-    status->has_vhost_dev = vdev->vhost_started;
 
     if (vdev->vhost_started) {
         VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 263b7762ab..b847b26041 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -2549,7 +2549,7 @@ void hmp_virtio_status(Monitor *mon, const QDict *qdict)
 
     monitor_printf(mon, "%s:\n", path);
     monitor_printf(mon, "  device_name:             %s %s\n",
-                   s->name, s->has_vhost_dev ? "(vhost)" : "");
+                   s->name, s->vhost_dev ? "(vhost)" : "");
     monitor_printf(mon, "  device_id:               %d\n", s->device_id);
     monitor_printf(mon, "  vhost_started:           %s\n",
                    s->vhost_started ? "true" : "false");
@@ -2585,7 +2585,7 @@ void hmp_virtio_status(Monitor *mon, const QDict *qdict)
     monitor_printf(mon, "  Backend features:\n");
     hmp_virtio_dump_features(mon, s->backend_features);
 
-    if (s->has_vhost_dev) {
+    if (s->vhost_dev) {
         monitor_printf(mon, "  VHost:\n");
         monitor_printf(mon, "    nvqs:           %d\n",
                        s->vhost_dev->nvqs);
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index fd18f8249b..b2df148e01 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -759,7 +759,6 @@ def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
         opt_out = [
-            'qapi/virtio.json',
             'qga/qapi-schema.json']
         if self.info and any(self.info.fname.endswith(mod)
                              for mod in opt_out):
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 29/30] qapi qga: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (27 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 28/30] qapi virtio: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-05 17:13   ` Philippe Mathieu-Daudé
  2022-11-04 16:07 ` [PATCH v3 30/30] qapi: Drop temporary logic to support conversion step by step Markus Armbruster
  2022-11-04 16:15 ` [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
  30 siblings, 1 reply; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth, Konstantin Kostiuk

The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qga/qapi-schema.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Michael Roth <michael.roth@amd.com>
Cc: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qga/commands-posix.c   | 32 ++++++++------------------------
 qga/commands-win32.c   | 40 +++++++---------------------------------
 qga/commands.c         | 11 ++++-------
 scripts/qapi/schema.py |  3 +--
 4 files changed, 20 insertions(+), 66 deletions(-)

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 32493d6383..1a28326ec7 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -71,7 +71,7 @@ static void ga_wait_child(pid_t pid, int *status, Error **errp)
     g_assert(rpid == pid);
 }
 
-void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
+void qmp_guest_shutdown(const char *mode, Error **errp)
 {
     const char *shutdown_flag;
     Error *local_err = NULL;
@@ -93,7 +93,7 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
 #endif
 
     slog("guest-shutdown called, mode: %s", mode);
-    if (!has_mode || strcmp(mode, "powerdown") == 0) {
+    if (!mode || strcmp(mode, "powerdown") == 0) {
         shutdown_flag = powerdown_flag;
     } else if (strcmp(mode, "halt") == 0) {
         shutdown_flag = halt_flag;
@@ -404,14 +404,14 @@ end:
     return f;
 }
 
-int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode,
+int64_t qmp_guest_file_open(const char *path, const char *mode,
                             Error **errp)
 {
     FILE *fh;
     Error *local_err = NULL;
     int64_t handle;
 
-    if (!has_mode) {
+    if (!mode) {
         mode = "r";
     }
     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
@@ -1037,7 +1037,6 @@ static bool build_guest_fsinfo_for_ccw_dev(char const *syspath,
         return false;
     }
 
-    disk->has_ccw_address = true;
     disk->ccw_address = g_new0(GuestCCWAddress, 1);
     disk->ccw_address->cssid = cssid;
     disk->ccw_address->ssid = ssid;
@@ -1084,12 +1083,10 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
         devnode = udev_device_get_devnode(udevice);
         if (devnode != NULL) {
             disk->dev = g_strdup(devnode);
-            disk->has_dev = true;
         }
         serial = udev_device_get_property_value(udevice, "ID_SERIAL");
         if (serial != NULL && *serial != 0) {
             disk->serial = g_strdup(serial);
-            disk->has_serial = true;
         }
     }
 
@@ -1108,7 +1105,7 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
         has_hwinf = false;
     }
 
-    if (has_hwinf || disk->has_dev || disk->has_serial) {
+    if (has_hwinf || disk->dev || disk->serial) {
         QAPI_LIST_PREPEND(fs->disk, disk);
     } else {
         qapi_free_GuestDiskAddress(disk);
@@ -1411,7 +1408,6 @@ static void get_nvme_smart(GuestDiskInfo *disk)
         return;
     }
 
-    disk->has_smart = true;
     disk->smart = g_new0(GuestDiskSmart, 1);
     disk->smart->type = GUEST_DISK_BUS_TYPE_NVME;
 
@@ -1449,7 +1445,7 @@ static void get_nvme_smart(GuestDiskInfo *disk)
 
 static void get_disk_smart(GuestDiskInfo *disk)
 {
-    if (disk->has_address
+    if (disk->address
         && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) {
         get_nvme_smart(disk);
     }
@@ -1502,7 +1498,6 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
         disk->name = dev_name;
         disk->partition = false;
         disk->alias = get_alias_for_syspath(disk_dir);
-        disk->has_alias = (disk->alias != NULL);
         QAPI_LIST_PREPEND(ret, disk);
 
         /* Get address for non-virtual devices */
@@ -1522,8 +1517,6 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
                     error_get_pretty(local_err));
                 error_free(local_err);
                 local_err = NULL;
-            } else if (disk->address != NULL) {
-                disk->has_address = true;
             }
         }
 
@@ -1641,7 +1634,6 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
         if (fd == -1) {
             result->error = g_strdup_printf("failed to open: %s",
                                             strerror(errno));
-            result->has_error = true;
             continue;
         }
 
@@ -1656,7 +1648,6 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
         r.minlen = has_minimum ? minimum : 0;
         ret = ioctl(fd, FITRIM, &r);
         if (ret == -1) {
-            result->has_error = true;
             if (errno == ENOTTY || errno == EOPNOTSUPP) {
                 result->error = g_strdup("trim not supported");
             } else {
@@ -2967,7 +2958,7 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
             QAPI_LIST_APPEND(tail, info);
         }
 
-        if (!info->has_hardware_address) {
+        if (!info->hardware_address) {
             if (!guest_get_hw_addr(ifa, mac_addr, &obtained, errp)) {
                 goto error;
             }
@@ -2977,7 +2968,6 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
                                     (int) mac_addr[0], (int) mac_addr[1],
                                     (int) mac_addr[2], (int) mac_addr[3],
                                     (int) mac_addr[4], (int) mac_addr[5]);
-                info->has_hardware_address = true;
             }
         }
 
@@ -3037,14 +3027,12 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
 
         info->has_ip_addresses = true;
 
-        if (!info->has_statistics) {
+        if (!info->statistics) {
             interface_stat = g_malloc0(sizeof(*interface_stat));
             if (guest_get_network_stats(info->name, interface_stat) == -1) {
-                info->has_statistics = false;
                 g_free(interface_stat);
             } else {
                 info->statistics = interface_stat;
-                info->has_statistics = true;
             }
         }
     }
@@ -3351,11 +3339,8 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
     if (uname(&kinfo) != 0) {
         error_setg_errno(errp, errno, "uname failed");
     } else {
-        info->has_kernel_version = true;
         info->kernel_version = g_strdup(kinfo.version);
-        info->has_kernel_release = true;
         info->kernel_release = g_strdup(kinfo.release);
-        info->has_machine = true;
         info->machine = g_strdup(kinfo.machine);
     }
 
@@ -3375,7 +3360,6 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
     value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \
     if (value != NULL) { \
         ga_osrelease_replace_special(value); \
-        info->has_ ## field = true; \
         info->field = value; \
     } \
 } while (0)
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index ec9f55b453..7d8d34d87d 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -193,8 +193,7 @@ static void handle_set_nonblocking(HANDLE fh)
     SetNamedPipeHandleState(fh, &pipe_state, NULL, NULL);
 }
 
-int64_t qmp_guest_file_open(const char *path, bool has_mode,
-                            const char *mode, Error **errp)
+int64_t qmp_guest_file_open(const char *path, const char *mode, Error **errp)
 {
     int64_t fd = -1;
     HANDLE fh;
@@ -206,7 +205,7 @@ int64_t qmp_guest_file_open(const char *path, bool has_mode,
     GError *gerr = NULL;
     wchar_t *w_path = NULL;
 
-    if (!has_mode) {
+    if (!mode) {
         mode = "r";
     }
     slog("guest-file-open called, filepath: %s, mode: %s", path, mode);
@@ -317,14 +316,14 @@ static void execute_async(DWORD WINAPI (*func)(LPVOID), LPVOID opaque,
     }
 }
 
-void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp)
+void qmp_guest_shutdown(const char *mode, Error **errp)
 {
     Error *local_err = NULL;
     UINT shutdown_flag = EWX_FORCE;
 
     slog("guest-shutdown called, mode: %s", mode);
 
-    if (!has_mode || strcmp(mode, "powerdown") == 0) {
+    if (!mode || strcmp(mode, "powerdown") == 0) {
         shutdown_flag |= EWX_POWEROFF;
     } else if (strcmp(mode, "halt") == 0) {
         shutdown_flag |= EWX_SHUTDOWN;
@@ -833,7 +832,6 @@ static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk,
         g_debug("serial number \"%s\"", serial);
         if (*serial != 0) {
             disk->serial = g_strndup(serial, len);
-            disk->has_serial = true;
         }
     }
 out_free:
@@ -951,7 +949,6 @@ static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
             /* Possibly CD-ROM or a shared drive. Try to pass the volume */
             g_debug("volume not on disk");
             disk = g_new0(GuestDiskAddress, 1);
-            disk->has_dev = true;
             disk->dev = g_strdup(name);
             get_single_disk_info(0xffffffff, disk, &local_err);
             if (local_err) {
@@ -983,7 +980,6 @@ static GuestDiskAddressList *build_guest_disk_info(char *guid, Error **errp)
          * See also Naming Files, Paths and Namespaces:
          * https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#win32-device-namespaces
          */
-        disk->has_dev = true;
         disk->dev = g_strdup_printf("\\\\.\\PhysicalDrive%lu",
                                     extents->Extents[i].DiskNumber);
 
@@ -1078,7 +1074,6 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
 
         g_debug("  number: %lu", sdn.DeviceNumber);
         address = g_new0(GuestDiskAddress, 1);
-        address->has_dev = true;
         address->dev = g_strdup(disk->name);
         get_single_disk_info(sdn.DeviceNumber, address, &local_err);
         if (local_err) {
@@ -1089,7 +1084,6 @@ GuestDiskInfoList *qmp_guest_get_disks(Error **errp)
             address = NULL;
         } else {
             disk->address = address;
-            disk->has_address = true;
         }
 
         QAPI_LIST_PREPEND(ret, disk);
@@ -1369,7 +1363,6 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
         g_free(uc_path);
 
         if (!path) {
-            res->has_error = true;
             res->error = g_strdup(gerr->message);
             g_error_free(gerr);
             break;
@@ -1387,7 +1380,6 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
         if (!g_spawn_sync(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
                           &out /* stdout */, NULL /* stdin */,
                           NULL, &gerr)) {
-            res->has_error = true;
             res->error = g_strdup(gerr->message);
             g_error_free(gerr);
         } else {
@@ -1403,7 +1395,6 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
                 if (g_strstr_len(lines[i], -1, "(0x") == NULL) {
                     continue;
                 }
-                res->has_error = true;
                 res->error = g_strdup(lines[i]);
                 break;
             }
@@ -1683,8 +1674,6 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
                                 (int) mac_addr[0], (int) mac_addr[1],
                                 (int) mac_addr[2], (int) mac_addr[3],
                                 (int) mac_addr[4], (int) mac_addr[5]);
-
-            info->has_hardware_address = true;
         }
 
         head_addr = NULL;
@@ -1713,15 +1702,13 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
             info->has_ip_addresses = true;
             info->ip_addresses = head_addr;
         }
-        if (!info->has_statistics) {
+        if (!info->statistics) {
             interface_stat = g_malloc0(sizeof(*interface_stat));
-            if (guest_get_network_stats(addr->AdapterName,
-                interface_stat) == -1) {
-                info->has_statistics = false;
+            if (guest_get_network_stats(addr->AdapterName, interface_stat)
+                == -1) {
                 g_free(interface_stat);
             } else {
                 info->statistics = interface_stat;
-                info->has_statistics = true;
             }
         }
     }
@@ -2113,7 +2100,6 @@ GuestUserList *qmp_guest_get_users(Error **errp)
 
                     user->user = g_strdup(info->UserName);
                     user->domain = g_strdup(info->Domain);
-                    user->has_domain = true;
 
                     user->login_time = login_time;
 
@@ -2332,29 +2318,19 @@ GuestOSInfo *qmp_guest_get_osinfo(Error **errp)
 
     info = g_new0(GuestOSInfo, 1);
 
-    info->has_kernel_version = true;
     info->kernel_version = g_strdup_printf("%lu.%lu",
         os_version.dwMajorVersion,
         os_version.dwMinorVersion);
-    info->has_kernel_release = true;
     info->kernel_release = g_strdup_printf("%lu",
         os_version.dwBuildNumber);
-    info->has_machine = true;
     info->machine = ga_get_current_arch();
 
-    info->has_id = true;
     info->id = g_strdup("mswindows");
-    info->has_name = true;
     info->name = g_strdup("Microsoft Windows");
-    info->has_pretty_name = true;
     info->pretty_name = product_name;
-    info->has_version = true;
     info->version = ga_get_win_name(&os_version, false);
-    info->has_version_id = true;
     info->version_id = ga_get_win_name(&os_version, true);
-    info->has_variant = true;
     info->variant = g_strdup(server ? "server" : "client");
-    info->has_variant_id = true;
     info->variant_id = g_strdup(server ? "server" : "client");
 
     return info;
@@ -2478,7 +2454,6 @@ GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
             device_id = g_match_info_fetch(match_info, 2);
 
             device->id = g_new0(GuestDeviceId, 1);
-            device->has_id = true;
             device->id->type = GUEST_DEVICE_TYPE_PCI;
             id = &device->id->u.pci;
             id->vendor_id = g_ascii_strtoull(vendor_id, NULL, 16);
@@ -2502,7 +2477,6 @@ GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
             error_setg(errp, "conversion to utf8 failed (driver version)");
             return NULL;
         }
-        device->has_driver_version = true;
 
         date = (LPFILETIME)cm_get_property(dev_info_data.DevInst,
             &qga_DEVPKEY_Device_DriverDate, &cm_type);
diff --git a/qga/commands.c b/qga/commands.c
index 7ff551d092..360077364e 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -206,14 +206,12 @@ GuestExecStatus *qmp_guest_exec_status(int64_t pid, Error **errp)
         }
 #endif
         if (gei->out.length > 0) {
-            ges->has_out_data = true;
             ges->out_data = g_base64_encode(gei->out.data, gei->out.length);
             g_free(gei->out.data);
             ges->has_out_truncated = gei->out.truncated;
         }
 
         if (gei->err.length > 0) {
-            ges->has_err_data = true;
             ges->err_data = g_base64_encode(gei->err.data, gei->err.length);
             g_free(gei->err.data);
             ges->has_err_truncated = gei->err.truncated;
@@ -385,7 +383,7 @@ close:
 GuestExec *qmp_guest_exec(const char *path,
                        bool has_arg, strList *arg,
                        bool has_env, strList *env,
-                       bool has_input_data, const char *input_data,
+                       const char *input_data,
                        bool has_capture_output, bool capture_output,
                        Error **errp)
 {
@@ -406,7 +404,7 @@ GuestExec *qmp_guest_exec(const char *path,
     arglist.value = (char *)path;
     arglist.next = has_arg ? arg : NULL;
 
-    if (has_input_data) {
+    if (input_data) {
         input = qbase64_decode(input_data, -1, &ninput, errp);
         if (!input) {
             return NULL;
@@ -423,7 +421,7 @@ GuestExec *qmp_guest_exec(const char *path,
     }
 
     ret = g_spawn_async_with_pipes(NULL, argv, envp, flags,
-            guest_exec_task_setup, NULL, &pid, has_input_data ? &in_fd : NULL,
+            guest_exec_task_setup, NULL, &pid, input_data ? &in_fd : NULL,
             has_output ? &out_fd : NULL, has_output ? &err_fd : NULL, &gerr);
     if (!ret) {
         error_setg(errp, QERR_QGA_COMMAND_FAILED, gerr->message);
@@ -438,7 +436,7 @@ GuestExec *qmp_guest_exec(const char *path,
     gei->has_output = has_output;
     g_child_watch_add(pid, guest_exec_child_watch, gei);
 
-    if (has_input_data) {
+    if (input_data) {
         gei->in.data = g_steal_pointer(&input);
         gei->in.size = ninput;
 #ifdef G_OS_WIN32
@@ -547,7 +545,6 @@ GuestTimezone *qmp_guest_get_timezone(Error **errp)
     info->offset = g_time_zone_get_offset(tz, intv);
     name = g_time_zone_get_abbreviation(tz, intv);
     if (name != NULL) {
-        info->has_zone = true;
         info->zone = g_strdup(name);
     }
     g_time_zone_unref(tz);
diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index b2df148e01..4594c69d0b 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -758,8 +758,7 @@ def __init__(self, name, info, typ, optional, ifcond=None, features=None):
     def need_has(self):
         assert self.type
         # Temporary hack to support dropping the has_FOO in reviewable chunks
-        opt_out = [
-            'qga/qapi-schema.json']
+        opt_out = []
         if self.info and any(self.info.fname.endswith(mod)
                              for mod in opt_out):
             return self.optional
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* [PATCH v3 30/30] qapi: Drop temporary logic to support conversion step by step
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (28 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 29/30] qapi qga: " Markus Armbruster
@ 2022-11-04 16:07 ` Markus Armbruster
  2022-11-04 16:15 ` [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:07 UTC (permalink / raw)
  To: qemu-devel
  Cc: jsnow, eblake, michael.roth, Daniel P . Berrangé,
	Philippe Mathieu-Daudé

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 scripts/qapi/schema.py | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py
index 4594c69d0b..cd8661125c 100644
--- a/scripts/qapi/schema.py
+++ b/scripts/qapi/schema.py
@@ -757,12 +757,6 @@ def __init__(self, name, info, typ, optional, ifcond=None, features=None):
 
     def need_has(self):
         assert self.type
-        # Temporary hack to support dropping the has_FOO in reviewable chunks
-        opt_out = []
-        if self.info and any(self.info.fname.endswith(mod)
-                             for mod in opt_out):
-            return self.optional
-        # End of temporary hack
         return self.optional and self.type.need_has_if_optional()
 
     def check(self, schema):
-- 
2.37.3



^ permalink raw reply related	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C
  2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
                   ` (29 preceding siblings ...)
  2022-11-04 16:07 ` [PATCH v3 30/30] qapi: Drop temporary logic to support conversion step by step Markus Armbruster
@ 2022-11-04 16:15 ` Markus Armbruster
  30 siblings, 0 replies; 41+ messages in thread
From: Markus Armbruster @ 2022-11-04 16:15 UTC (permalink / raw)
  To: qemu-devel; +Cc: jsnow, eblake, michael.roth

Markus Armbruster <armbru@redhat.com> writes:

> In QAPI, absent optional members are distinct from any present value.
> We thus represent an optional schema member FOO as two C members: a
> FOO with the member's type, and a bool has_FOO.  Likewise for function
> arguments.
>
> However, the has_FOO is actually redundant for a pointer-valued FOO,
> which can be null only when has_FOO is false, i.e. has_FOO == !!FOO.
> Except for arrays, where we a null FOO can also be a present empty
> array.
>
> The redundant has_FOO are a nuisance to work with.  Improve the
> generator to elide them.
>
> PATCH 01+02 are trivial documentation cleanups.
>
> PATCH 03 tweaks an example in documentation so it'll show the change.
>
> PATCH 04 improves the code generator, but nerfs the change for the
> schema modules where handwritten code needs to be updated.
>
> PATCH 05-07,10-29 un-nerf in reviewable chunks.  Their commit messages
> refer back to PATCH 04 for an explanation of the transformation.
> Please read that first.  Note that these patches combine the
> mechanical transformation with obvious, local follow-up
> simplifications.  If you want them separate for easier review, let me
> know.
>
> PATCH 08+09 clean up in preparation for PATCH 10.
>
> PATCH 28 drops the nerfing code.

PATCH 30, of course.



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format
  2022-11-04 16:06 ` [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format Markus Armbruster
@ 2022-11-04 19:32   ` Eric Blake
  0 siblings, 0 replies; 41+ messages in thread
From: Eric Blake @ 2022-11-04 19:32 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: qemu-devel, jsnow, michael.roth, Kevin Wolf, Hanna Reitz, qemu-block

On Fri, Nov 04, 2022 at 05:06:50PM +0100, Markus Armbruster wrote:
> drive-backup argument @format defaults to the format of the source
> unless @mode is "existing".
> 
> drive_backup_prepare() implements this by copying the source's
> @format_name to DriveBackup member @format.  It leaves @has_format
> false, violating the "has_format == !!format" invariant.  Unclean.
> Falls apart when we elide @has_format (commit after next): then QAPI
> passes @format, which is a string constant, to g_free().  iotest 056
> duly explodes.
> 
> Clean it up.  Since the value stored in member @format is not actually
> used outside this function, use a local variable instead of modifying
> the QAPI object.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Cc: Kevin Wolf <kwolf@redhat.com>
> Cc: Hanna Reitz <hreitz@redhat.com>
> Cc: qemu-block@nongnu.org
> ---
>  blockdev.c | 17 +++++++++--------
>  1 file changed, 9 insertions(+), 8 deletions(-)
>

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg
  2022-11-04 16:06 ` [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg Markus Armbruster
@ 2022-11-04 19:35   ` Eric Blake
  2022-11-08 14:21   ` Vladimir Sementsov-Ogievskiy
  1 sibling, 0 replies; 41+ messages in thread
From: Eric Blake @ 2022-11-04 19:35 UTC (permalink / raw)
  To: Markus Armbruster
  Cc: qemu-devel, jsnow, michael.roth, Vladimir Sementsov-Ogievskiy,
	qemu-block

On Fri, Nov 04, 2022 at 05:06:51PM +0100, Markus Armbruster wrote:
> block-export-add argument @name defaults to the value of argument
> @node-name.
> 
> nbd_export_create() implements this by copying @node_name to @name.
> It leaves @has_node_name false, violating the "has_node_name ==
> !!node_name" invariant.  Unclean.  Falls apart when we elide
> @has_node_name (next commit): then QAPI frees the same value twice,
> once for @node_name and once @name.  iotest 307 duly explodes.
> 
> Goes back to commit c62d24e906 "blockdev-nbd: Boxed argument type for
> nbd-server-add" (v5.0.0).  Got moved from qmp_nbd_server_add() to
> nbd_export_create() (commit 56ee86261e), then copied back (commit
> b6076afcab).  Commit 8675cbd68b "nbd: Utilize QAPI_CLONE for type
> conversion" (v5.2.0) cleaned up the copy in qmp_nbd_server_add()
> noting
> 
>     Second, our assignment to arg->name is fishy: the generated QAPI code
>     for qapi_free_NbdServerAddOptions does not visit arg->name if
>     arg->has_name is false, but if it DID visit it, we would have
>     introduced a double-free situation when arg is finally freed.
> 
> Exactly.  However, the copy in nbd_export_create() remained dirty.
> 
> Clean it up.  Since the value stored in member @name is not actually
> used outside this function, use a local variable instead of modifying
> the QAPI object.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Cc: Eric Blake <eblake@redhat.com>
> Cc: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
> Cc: qemu-block@nongnu.org
> ---
>  nbd/server.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
>

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 18/30] qapi net: Elide redundant has_FOO in generated C
  2022-11-04 16:07 ` [PATCH v3 18/30] qapi net: " Markus Armbruster
@ 2022-11-05 17:03   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:03 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel; +Cc: jsnow, eblake, michael.roth, Jason Wang

On 4/11/22 17:07, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qapi/net.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> Cc: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   hw/net/virtio-net.c    |  3 +--
>   monitor/hmp-cmds.c     |  1 -
>   net/announce.c         |  8 +++----
>   net/hub.c              |  2 +-
>   net/l2tpv3.c           |  2 +-
>   net/net.c              | 25 ++++++++++-----------
>   net/slirp.c            |  4 ++--
>   net/socket.c           | 18 +++++++--------
>   net/tap-win32.c        |  2 +-
>   net/tap.c              | 51 +++++++++++++++++++++---------------------
>   net/vhost-vdpa.c       |  6 ++---
>   scripts/qapi/schema.py |  1 -
>   12 files changed, 59 insertions(+), 64 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 20/30] qapi qdev qom: Elide redundant has_FOO in generated C
  2022-11-04 16:07 ` [PATCH v3 20/30] qapi qdev qom: " Markus Armbruster
@ 2022-11-05 17:06   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:06 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel
  Cc: jsnow, eblake, michael.roth, Paolo Bonzini,
	Daniel P . Berrangé,
	Eduardo Habkost

On 4/11/22 17:07, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qapi/qdev.json and
> qapi/qom.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Daniel P. Berrangé <berrange@redhat.com>
> Cc: Eduardo Habkost <eduardo@habkost.net>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   hw/acpi/memory_hotplug.c    | 2 +-
>   hw/core/qdev.c              | 2 +-
>   hw/ppc/spapr.c              | 2 +-
>   hw/ppc/spapr_drc.c          | 3 +--
>   qom/qom-qmp-cmds.c          | 7 +------
>   stubs/qdev.c                | 6 ++----
>   tests/qtest/fuzz/qos_fuzz.c | 3 +--
>   scripts/qapi/schema.py      | 2 --
>   8 files changed, 8 insertions(+), 19 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 22/30] qapi rocker: Elide redundant has_FOO in generated C
  2022-11-04 16:07 ` [PATCH v3 22/30] qapi rocker: " Markus Armbruster
@ 2022-11-05 17:08   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:08 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel; +Cc: jsnow, eblake, michael.roth, Jiri Pirko

On 4/11/22 17:07, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qapi/rocker.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> Cc: Jiri Pirko <jiri@resnulli.us>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   hw/net/rocker/rocker_of_dpa.c | 13 ++-----------
>   monitor/hmp-cmds.c            | 22 +++++++++++-----------
>   scripts/qapi/schema.py        |  1 -
>   3 files changed, 13 insertions(+), 23 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 26/30] qapi transaction: Elide redundant has_FOO in generated C
  2022-11-04 16:07 ` [PATCH v3 26/30] qapi transaction: " Markus Armbruster
@ 2022-11-05 17:08   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:08 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel
  Cc: jsnow, eblake, michael.roth, Kevin Wolf, Hanna Reitz, qemu-block

On 4/11/22 17:07, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qapi/transaction.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> In qmp_transaction(), we can't just drop parameter @has_props, since
> it's used to track whether @props needs to be freed.  Replace it by a
> local variable.
> 
> Cc: Kevin Wolf <kwolf@redhat.com>
> Cc: Hanna Reitz <hreitz@redhat.com>
> Cc: qemu-block@nongnu.org
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   blockdev.c             | 4 ++--
>   scripts/qapi/schema.py | 1 -
>   2 files changed, 2 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 29/30] qapi qga: Elide redundant has_FOO in generated C
  2022-11-04 16:07 ` [PATCH v3 29/30] qapi qga: " Markus Armbruster
@ 2022-11-05 17:13   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:13 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel
  Cc: jsnow, eblake, michael.roth, Konstantin Kostiuk

On 4/11/22 17:07, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qga/qapi-schema.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> Cc: Michael Roth <michael.roth@amd.com>
> Cc: Konstantin Kostiuk <kkostiuk@redhat.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   qga/commands-posix.c   | 32 ++++++++------------------------
>   qga/commands-win32.c   | 40 +++++++---------------------------------
>   qga/commands.c         | 11 ++++-------
>   scripts/qapi/schema.py |  3 +--
>   4 files changed, 20 insertions(+), 66 deletions(-)

> -int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode,
> +int64_t qmp_guest_file_open(const char *path, const char *mode,
>                               Error **errp)
>   {
>       FILE *fh;
>       Error *local_err = NULL;
>       int64_t handle;
>   
> -    if (!has_mode) {
> +    if (!mode) {
>           mode = "r";
>       }

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 13/30] qapi dump: Elide redundant has_FOO in generated C
  2022-11-04 16:06 ` [PATCH v3 13/30] qapi dump: " Markus Armbruster
@ 2022-11-05 17:15   ` Philippe Mathieu-Daudé
  0 siblings, 0 replies; 41+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-11-05 17:15 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel
  Cc: jsnow, eblake, michael.roth, Marc-André Lureau

On 4/11/22 17:06, Markus Armbruster wrote:
> The has_FOO for pointer-valued FOO are redundant, except for arrays.
> They are also a nuisance to work with.  Recent commit "qapi: Start to
> elide redundant has_FOO in generated C" provided the means to elide
> them step by step.  This is the step for qapi/dump.json.
> 
> Said commit explains the transformation in more detail.  The invariant
> violations mentioned there do not occur here.
> 
> Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>   dump/dump.c            | 4 ++--
>   scripts/qapi/schema.py | 1 -
>   2 files changed, 2 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>



^ permalink raw reply	[flat|nested] 41+ messages in thread

* Re: [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg
  2022-11-04 16:06 ` [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg Markus Armbruster
  2022-11-04 19:35   ` Eric Blake
@ 2022-11-08 14:21   ` Vladimir Sementsov-Ogievskiy
  1 sibling, 0 replies; 41+ messages in thread
From: Vladimir Sementsov-Ogievskiy @ 2022-11-08 14:21 UTC (permalink / raw)
  To: Markus Armbruster, qemu-devel; +Cc: jsnow, eblake, michael.roth, qemu-block

On 11/4/22 19:06, Markus Armbruster wrote:
> block-export-add argument @name defaults to the value of argument
> @node-name.
> 
> nbd_export_create() implements this by copying @node_name to @name.
> It leaves @has_node_name false, violating the "has_node_name ==
> !!node_name" invariant.  Unclean.  Falls apart when we elide
> @has_node_name (next commit): then QAPI frees the same value twice,
> once for @node_name and once @name.  iotest 307 duly explodes.
> 
> Goes back to commit c62d24e906 "blockdev-nbd: Boxed argument type for
> nbd-server-add" (v5.0.0).  Got moved from qmp_nbd_server_add() to
> nbd_export_create() (commit 56ee86261e), then copied back (commit
> b6076afcab).  Commit 8675cbd68b "nbd: Utilize QAPI_CLONE for type
> conversion" (v5.2.0) cleaned up the copy in qmp_nbd_server_add()
> noting
> 
>      Second, our assignment to arg->name is fishy: the generated QAPI code
>      for qapi_free_NbdServerAddOptions does not visit arg->name if
>      arg->has_name is false, but if it DID visit it, we would have
>      introduced a double-free situation when arg is finally freed.
> 
> Exactly.  However, the copy in nbd_export_create() remained dirty.
> 
> Clean it up.  Since the value stored in member @name is not actually
> used outside this function, use a local variable instead of modifying
> the QAPI object.
> 
> Signed-off-by: Markus Armbruster<armbru@redhat.com>
> Cc: Eric Blake<eblake@redhat.com>
> Cc: Vladimir Sementsov-Ogievskiy<vsementsov@yandex-team.ru>
> Cc:qemu-block@nongnu.org


Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>

-- 
Best regards,
Vladimir



^ permalink raw reply	[flat|nested] 41+ messages in thread

end of thread, other threads:[~2022-11-08 14:22 UTC | newest]

Thread overview: 41+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-11-04 16:06 [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 01/30] docs/devel/qapi-code-gen: Update example to match current code Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 02/30] qapi: Tidy up whitespace in generated code Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 03/30] docs/devel/qapi-code-gen: Extend example for next commit's change Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 04/30] qapi: Start to elide redundant has_FOO in generated C Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 05/30] qapi tests: Elide " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 06/30] qapi acpi: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 07/30] qapi audio: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 08/30] blockdev: Clean up abuse of DriveBackup member format Markus Armbruster
2022-11-04 19:32   ` Eric Blake
2022-11-04 16:06 ` [PATCH v3 09/30] nbd/server: Clean up abuse of BlockExportOptionsNbd member @arg Markus Armbruster
2022-11-04 19:35   ` Eric Blake
2022-11-08 14:21   ` Vladimir Sementsov-Ogievskiy
2022-11-04 16:06 ` [PATCH v3 10/30] qapi block: Elide redundant has_FOO in generated C Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 11/30] qapi chardev: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 12/30] qapi crypto: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 13/30] qapi dump: " Markus Armbruster
2022-11-05 17:15   ` Philippe Mathieu-Daudé
2022-11-04 16:06 ` [PATCH v3 14/30] qapi job: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 15/30] qapi machine: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 16/30] qapi migration: " Markus Armbruster
2022-11-04 16:06 ` [PATCH v3 17/30] qapi misc: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 18/30] qapi net: " Markus Armbruster
2022-11-05 17:03   ` Philippe Mathieu-Daudé
2022-11-04 16:07 ` [PATCH v3 19/30] qapi pci: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 20/30] qapi qdev qom: " Markus Armbruster
2022-11-05 17:06   ` Philippe Mathieu-Daudé
2022-11-04 16:07 ` [PATCH v3 21/30] qapi replay: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 22/30] qapi rocker: " Markus Armbruster
2022-11-05 17:08   ` Philippe Mathieu-Daudé
2022-11-04 16:07 ` [PATCH v3 23/30] qapi run-state: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 24/30] qapi stats: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 25/30] qapi tpm: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 26/30] qapi transaction: " Markus Armbruster
2022-11-05 17:08   ` Philippe Mathieu-Daudé
2022-11-04 16:07 ` [PATCH v3 27/30] qapi ui: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 28/30] qapi virtio: " Markus Armbruster
2022-11-04 16:07 ` [PATCH v3 29/30] qapi qga: " Markus Armbruster
2022-11-05 17:13   ` Philippe Mathieu-Daudé
2022-11-04 16:07 ` [PATCH v3 30/30] qapi: Drop temporary logic to support conversion step by step Markus Armbruster
2022-11-04 16:15 ` [PATCH v3 00/30] qapi: Elide redundant has_FOO in generated C Markus Armbruster

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