qapi: Smooth another visitor error checking pattern
Convert
visit_type_FOO(v, ..., &ptr, &err);
...
if (err) {
...
}
to
visit_type_FOO(v, ..., &ptr, errp);
...
if (!ptr) {
...
}
for functions that set @ptr to non-null / null on success / error.
Eliminate error_propagate() that are now unnecessary. Delete @err
that are now unused.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-40-armbru@redhat.com>
diff --git a/block/nfs.c b/block/nfs.c
index b1718d1..61a249a 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -563,18 +563,15 @@
BlockdevOptionsNfs *opts = NULL;
Visitor *v;
const QDictEntry *e;
- Error *local_err = NULL;
v = qobject_input_visitor_new_flat_confused(options, errp);
if (!v) {
return NULL;
}
- visit_type_BlockdevOptionsNfs(v, NULL, &opts, &local_err);
+ visit_type_BlockdevOptionsNfs(v, NULL, &opts, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!opts) {
return NULL;
}
diff --git a/block/parallels.c b/block/parallels.c
index cb5259a..f489c0d 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -625,7 +625,6 @@
Error **errp)
{
BlockdevCreateOptions *create_options = NULL;
- Error *local_err = NULL;
BlockDriverState *bs = NULL;
QDict *qdict;
Visitor *v;
@@ -668,11 +667,9 @@
goto done;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto done;
}
diff --git a/block/qcow.c b/block/qcow.c
index dca2a1f..c22d1bf 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -943,7 +943,6 @@
QDict *qdict;
Visitor *v;
const char *val;
- Error *local_err = NULL;
int ret;
static const QDictRenames opt_renames[] = {
@@ -995,11 +994,9 @@
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto fail;
}
diff --git a/block/qcow2.c b/block/qcow2.c
index f419860..ea33673 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3685,7 +3685,6 @@
Visitor *v;
BlockDriverState *bs = NULL;
BlockDriverState *data_bs = NULL;
- Error *local_err = NULL;
const char *val;
int ret;
@@ -3781,11 +3780,9 @@
goto finish;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto finish;
}
diff --git a/block/qed.c b/block/qed.c
index e04b7ab..b27e754 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -729,7 +729,6 @@
QDict *qdict;
Visitor *v;
BlockDriverState *bs = NULL;
- Error *local_err = NULL;
int ret;
static const QDictRenames opt_renames[] = {
@@ -771,11 +770,9 @@
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto fail;
}
diff --git a/block/rbd.c b/block/rbd.c
index 617553b..688074c 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -681,7 +681,6 @@
Error **errp)
{
Visitor *v;
- Error *local_err = NULL;
/* Convert the remaining options into a QAPI object */
v = qobject_input_visitor_new_flat_confused(options, errp);
@@ -689,11 +688,9 @@
return -EINVAL;
}
- visit_type_BlockdevOptionsRbd(v, NULL, opts, &local_err);
+ visit_type_BlockdevOptionsRbd(v, NULL, opts, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!opts) {
return -EINVAL;
}
diff --git a/block/sheepdog.c b/block/sheepdog.c
index a6a9144..6c487c8 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -2193,11 +2193,9 @@
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto fail;
}
diff --git a/block/ssh.c b/block/ssh.c
index f00b896..ebe3d8b 100644
--- a/block/ssh.c
+++ b/block/ssh.c
@@ -616,7 +616,6 @@
{
BlockdevOptionsSsh *result = NULL;
QemuOpts *opts = NULL;
- Error *local_err = NULL;
const QDictEntry *e;
Visitor *v;
@@ -636,11 +635,9 @@
goto fail;
}
- visit_type_BlockdevOptionsSsh(v, NULL, &result, &local_err);
+ visit_type_BlockdevOptionsSsh(v, NULL, &result, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!result) {
goto fail;
}
diff --git a/block/vdi.c b/block/vdi.c
index c4527a9..2496d51 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -906,7 +906,6 @@
uint64_t block_size = DEFAULT_CLUSTER_SIZE;
bool is_static = false;
Visitor *v;
- Error *local_err = NULL;
int ret;
/* Parse options and convert legacy syntax.
@@ -957,11 +956,9 @@
ret = -EINVAL;
goto done;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto done;
}
diff --git a/block/vhdx.c b/block/vhdx.c
index 327675c..a36d9d9 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -2064,7 +2064,6 @@
QDict *qdict;
Visitor *v;
BlockDriverState *bs = NULL;
- Error *local_err = NULL;
int ret;
static const QDictRenames opt_renames[] = {
@@ -2105,11 +2104,9 @@
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto fail;
}
diff --git a/block/vpc.c b/block/vpc.c
index cfec15f..131b9db 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -1095,7 +1095,6 @@
QDict *qdict;
Visitor *v;
BlockDriverState *bs = NULL;
- Error *local_err = NULL;
int ret;
static const QDictRenames opt_renames[] = {
@@ -1134,11 +1133,9 @@
goto fail;
}
- visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!create_options) {
ret = -EINVAL;
goto fail;
}
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 8b240c3..f6d9ec4 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -239,7 +239,6 @@
void acpi_table_add(const QemuOpts *opts, Error **errp)
{
AcpiTableOptions *hdrs = NULL;
- Error *err = NULL;
char **pathnames = NULL;
char **cur;
size_t bloblen = 0;
@@ -249,11 +248,11 @@
Visitor *v;
v = opts_visitor_new(opts);
- visit_type_AcpiTableOptions(v, NULL, &hdrs, &err);
+ visit_type_AcpiTableOptions(v, NULL, &hdrs, errp);
visit_free(v);
}
- if (err) {
+ if (!hdrs) {
goto out;
}
if (hdrs->has_file == hdrs->has_data) {
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 96c6c00..a775fba 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -682,11 +682,9 @@
trace_xen_block_blockdev_add(node_name);
v = qobject_input_visitor_new(QOBJECT(qdict));
- visit_type_BlockdevOptions(v, NULL, &options, &local_err);
+ visit_type_BlockdevOptions(v, NULL, &options, errp);
visit_free(v);
-
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!options) {
goto fail;
}
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 1b3267a..d1a94a1 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -516,10 +516,10 @@
Error *err = NULL;
Visitor *v = opts_visitor_new(opts);
- visit_type_NumaOptions(v, NULL, &object, &err);
+ visit_type_NumaOptions(v, NULL, &object, errp);
visit_free(v);
- if (err) {
- goto end;
+ if (!object) {
+ return -1;
}
/* Fix up legacy suffix-less format */
@@ -530,7 +530,6 @@
set_numa_options(ms, object, &err);
-end:
qapi_free_NumaOptions(object);
if (err) {
error_propagate(errp, err);
diff --git a/monitor/monitor.c b/monitor/monitor.c
index 19dcb8f..b385a3d 100644
--- a/monitor/monitor.c
+++ b/monitor/monitor.c
@@ -657,25 +657,18 @@
{
Visitor *v;
MonitorOptions *options;
- Error *local_err = NULL;
+ int ret;
v = opts_visitor_new(opts);
- visit_type_MonitorOptions(v, NULL, &options, &local_err);
+ visit_type_MonitorOptions(v, NULL, &options, errp);
visit_free(v);
-
- if (local_err) {
- goto out;
- }
-
- monitor_init(options, true, &local_err);
- qapi_free_MonitorOptions(options);
-
-out:
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!options) {
return -1;
}
- return 0;
+
+ ret = monitor_init(options, true, errp);
+ qapi_free_MonitorOptions(options);
+ return ret;
}
QemuOptsList qemu_mon_opts = {
