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blkdebug: Simplify and improve filename generation

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Instead of actually recreating the options from scratch, just reuse the
options given for creating the BDS, which are the configuration file
name and additional options. In case there are no additional options we
can thus create a plain filename.

This obviously results in a different output for qemu-iotest 099 which
exactly tests this filename generation. Fix it up as well.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1415697825-26678-2-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-11-11 10:23:44 +01:00 committed by Kevin Wolf
parent 48fe86f640
commit 8779441b1b
2 changed files with 30 additions and 73 deletions
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99
block/blkdebug.c
View File

@ -721,93 +721,50 @@ static int64_t blkdebug_getlength(BlockDriverState *bs)
static void blkdebug_refresh_filename(BlockDriverState *bs)
{
BDRVBlkdebugState *s = bs->opaque;
struct BlkdebugRule *rule;
QDict *opts;
QList *inject_error_list = NULL, *set_state_list = NULL;
QList *suspend_list = NULL;
int event;
const QDictEntry *e;
bool force_json = false;
if (!bs->file->full_open_options) {
for (e = qdict_first(bs->options); e; e = qdict_next(bs->options, e)) {
if (strcmp(qdict_entry_key(e), "config") &&
strcmp(qdict_entry_key(e), "x-image") &&
strcmp(qdict_entry_key(e), "image") &&
strncmp(qdict_entry_key(e), "image.", strlen("image.")))
{
force_json = true;
break;
}
}
if (force_json && !bs->file->full_open_options) {
/* The config file cannot be recreated, so creating a plain filename
* is impossible */
return;
}
if (!force_json && bs->file->exact_filename[0]) {
snprintf(bs->exact_filename, sizeof(bs->exact_filename),
"blkdebug:%s:%s",
qdict_get_try_str(bs->options, "config") ?: "",
bs->file->exact_filename);
}
opts = qdict_new();
qdict_put_obj(opts, "driver", QOBJECT(qstring_from_str("blkdebug")));
QINCREF(bs->file->full_open_options);
qdict_put_obj(opts, "image", QOBJECT(bs->file->full_open_options));
for (event = 0; event < BLKDBG_EVENT_MAX; event++) {
QLIST_FOREACH(rule, &s->rules[event], next) {
if (rule->action == ACTION_INJECT_ERROR) {
QDict *inject_error = qdict_new();
qdict_put_obj(inject_error, "event", QOBJECT(qstring_from_str(
BlkdebugEvent_lookup[rule->event])));
qdict_put_obj(inject_error, "state",
QOBJECT(qint_from_int(rule->state)));
qdict_put_obj(inject_error, "errno", QOBJECT(qint_from_int(
rule->options.inject.error)));
qdict_put_obj(inject_error, "sector", QOBJECT(qint_from_int(
rule->options.inject.sector)));
qdict_put_obj(inject_error, "once", QOBJECT(qbool_from_int(
rule->options.inject.once)));
qdict_put_obj(inject_error, "immediately",
QOBJECT(qbool_from_int(
rule->options.inject.immediately)));
if (!inject_error_list) {
inject_error_list = qlist_new();
}
qlist_append_obj(inject_error_list, QOBJECT(inject_error));
} else if (rule->action == ACTION_SET_STATE) {
QDict *set_state = qdict_new();
qdict_put_obj(set_state, "event", QOBJECT(qstring_from_str(
BlkdebugEvent_lookup[rule->event])));
qdict_put_obj(set_state, "state",
QOBJECT(qint_from_int(rule->state)));
qdict_put_obj(set_state, "new_state", QOBJECT(qint_from_int(
rule->options.set_state.new_state)));
if (!set_state_list) {
set_state_list = qlist_new();
}
qlist_append_obj(set_state_list, QOBJECT(set_state));
} else if (rule->action == ACTION_SUSPEND) {
QDict *suspend = qdict_new();
qdict_put_obj(suspend, "event", QOBJECT(qstring_from_str(
BlkdebugEvent_lookup[rule->event])));
qdict_put_obj(suspend, "state",
QOBJECT(qint_from_int(rule->state)));
qdict_put_obj(suspend, "tag", QOBJECT(qstring_from_str(
rule->options.suspend.tag)));
if (!suspend_list) {
suspend_list = qlist_new();
}
qlist_append_obj(suspend_list, QOBJECT(suspend));
}
for (e = qdict_first(bs->options); e; e = qdict_next(bs->options, e)) {
if (strcmp(qdict_entry_key(e), "x-image") &&
strcmp(qdict_entry_key(e), "image") &&
strncmp(qdict_entry_key(e), "image.", strlen("image.")))
{
qobject_incref(qdict_entry_value(e));
qdict_put_obj(opts, qdict_entry_key(e), qdict_entry_value(e));
}
}
if (inject_error_list) {
qdict_put_obj(opts, "inject-error", QOBJECT(inject_error_list));
}
if (set_state_list) {
qdict_put_obj(opts, "set-state", QOBJECT(set_state_list));
}
if (suspend_list) {
qdict_put_obj(opts, "suspend", QOBJECT(suspend_list));
}
bs->full_open_options = opts;
}

4
tests/qemu-iotests/099.out
View File

@ -12,9 +12,9 @@ blkverify:TEST_DIR/t.IMGFMT.compare:TEST_DIR/t.IMGFMT
=== Testing JSON filename for blkdebug ===
json:{"driver": "IMGFMT", "file": {"inject-error": [{"immediately": false, "once": false, "state": 0, "sector": -1, "event": "l1_update", "errno": 5}], "image": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT"}, "driver": "blkdebug"}}
json:{"driver": "IMGFMT", "file": {"image": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT"}, "driver": "blkdebug", "inject-error.0.event": "l1_update"}}
=== Testing indirectly enforced JSON filename ===
json:{"driver": "raw", "file": {"test": {"driver": "IMGFMT", "file": {"inject-error": [{"immediately": false, "once": false, "state": 0, "sector": -1, "event": "l1_update", "errno": 5}], "image": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT"}, "driver": "blkdebug"}}, "driver": "blkverify", "raw": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT.compare"}}}
json:{"driver": "raw", "file": {"test": {"driver": "IMGFMT", "file": {"image": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT"}, "driver": "blkdebug", "inject-error.0.event": "l1_update"}}, "driver": "blkverify", "raw": {"driver": "file", "filename": "TEST_DIR/t.IMGFMT.compare"}}}
*** done