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qemu-option: Check return value instead of @err where convenient

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Convert uses like

    opts = qemu_opts_create(..., &err);
    if (err) {
        ...
    }

to

    opts = qemu_opts_create(..., errp);
    if (!opts) {
        ...
    }

Eliminate error_propagate() that are now unnecessary.  Delete @err
that are now unused.

Note that we can't drop parallels_open()'s error_propagate() here.  We
continue to execute it even in the converted case.  It's a no-op then:
local_err is null.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20200707160613.848843-8-armbru@redhat.com>
This commit is contained in:
Markus Armbruster
2020-07-07 18:05:35 +02:00
parent 79c3e2bc6e
commit c6ecec43b2
5 changed files with 14 additions and 22 deletions
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12
util/qemu-option.c
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@@ -670,11 +670,9 @@ void qemu_opts_set(QemuOptsList *list, const char *id,
const char *name, const char *value, Error **errp)
{
QemuOpts *opts;
Error *local_err = NULL;
opts = qemu_opts_create(list, id, 1, &local_err);
if (local_err) {
error_propagate(errp, local_err);
opts = qemu_opts_create(list, id, 1, errp);
if (!opts) {
return;
}
qemu_opt_set(opts, name, value, errp);
@@ -1012,10 +1010,8 @@ QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
QemuOpts *opts;
const QDictEntry *entry;
opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1,
&local_err);
if (local_err) {
error_propagate(errp, local_err);
opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1, errp);
if (!opts) {
return NULL;
}