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block: Make remaining uses of qobject input visitor more robust 

Remaining uses of qobject_input_visitor_new_keyval() in the block
subsystem:

* block_crypto_open_opts_init()
  Currently doesn't visit any non-string scalars, thus safe.  It's
  called from
  - block_crypto_open_luks()
    Creates the QDict with qemu_opts_to_qdict_filtered(), which
    creates only string scalars, but has a TODO asking for other types.
  - qcow_open()
  - qcow2_open(), qcow2_co_invalidate_cache(), qcow2_reopen_prepare()

* block_crypto_create_opts_init(), called from
  - block_crypto_co_create_opts_luks()
    Also creates the QDict with qemu_opts_to_qdict_filtered().

* vdi_co_create_opts()
  Also creates the QDict with qemu_opts_to_qdict_filtered().

Replace these uses by qobject_input_visitor_new_flat_confused() for
robustness.  This adds crumpling.  Right now, that's a no-op, but if
we ever extend these things in non-flat ways, crumpling will be
needed.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2018-06-14 21:14:34 +02:00 committed by Kevin Wolf
parent af91062ee1
commit f853465aac
2 changed files with 15 additions and 5 deletions
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12
block/crypto.c
View File

@ -21,11 +21,11 @@
#include "qemu/osdep.h"
#include "block/block_int.h"
#include "block/qdict.h"
#include "sysemu/block-backend.h"
#include "crypto/block.h"
#include "qapi/opts-visitor.h"
#include "qapi/qapi-visit-crypto.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qobject-input-visitor.h"
#include "qapi/error.h"
#include "qemu/option.h"
@ -159,7 +159,10 @@ block_crypto_open_opts_init(QCryptoBlockFormat format,
ret = g_new0(QCryptoBlockOpenOptions, 1);
ret->format = format;
v = qobject_input_visitor_new_keyval(QOBJECT(opts));
v = qobject_input_visitor_new_flat_confused(opts, &local_err);
if (local_err) {
goto out;
}
visit_start_struct(v, NULL, NULL, 0, &local_err);
if (local_err) {
@ -210,7 +213,10 @@ block_crypto_create_opts_init(QCryptoBlockFormat format,
ret = g_new0(QCryptoBlockCreateOptions, 1);
ret->format = format;
v = qobject_input_visitor_new_keyval(QOBJECT(opts));
v = qobject_input_visitor_new_flat_confused(opts, &local_err);
if (local_err) {
goto out;
}
visit_start_struct(v, NULL, NULL, 0, &local_err);
if (local_err) {

8
block/vdi.c
View File

@ -51,10 +51,10 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qobject-input-visitor.h"
#include "qapi/qapi-visit-block-core.h"
#include "block/block_int.h"
#include "block/qdict.h"
#include "sysemu/block-backend.h"
#include "qemu/module.h"
#include "qemu/option.h"
@ -934,7 +934,11 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
}
/* Get the QAPI object */
v = qobject_input_visitor_new_keyval(QOBJECT(qdict));
v = qobject_input_visitor_new_flat_confused(qdict, errp);
if (!v) {
ret = -EINVAL;
goto done;
}
visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
visit_free(v);