mirror of https://gitee.com/openkylin/qemu.git
blkdebug: Implement bdrv_refresh_filename()
Because blkdebug cannot simply create a configuration file, simply refuse to reconstruct a plain filename and only generate an options QDict from the rules instead. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz
Kevin Wolf
parent
91af701412
commit
2c31b04c94
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@ -26,6 +26,10 @@
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#include "qemu/config-file.h"
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#include "qemu/config-file.h"
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#include "block/block_int.h"
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#include "block/block_int.h"
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#include "qemu/module.h"
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#include "qemu/module.h"
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#include "qapi/qmp/qbool.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qmp/qint.h"
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#include "qapi/qmp/qstring.h"
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typedef struct BDRVBlkdebugState {
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typedef struct BDRVBlkdebugState {
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int state;
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int state;
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@ -706,6 +710,98 @@ static int64_t blkdebug_getlength(BlockDriverState *bs)
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return bdrv_getlength(bs->file);
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return bdrv_getlength(bs->file);
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}
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}
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static void blkdebug_refresh_filename(BlockDriverState *bs)
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{
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BDRVBlkdebugState *s = bs->opaque;
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struct BlkdebugRule *rule;
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QDict *opts;
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QList *inject_error_list = NULL, *set_state_list = NULL;
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QList *suspend_list = NULL;
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int event;
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if (!bs->file->full_open_options) {
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/* The config file cannot be recreated, so creating a plain filename
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* is impossible */
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return;
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}
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opts = qdict_new();
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qdict_put_obj(opts, "driver", QOBJECT(qstring_from_str("blkdebug")));
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QINCREF(bs->file->full_open_options);
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qdict_put_obj(opts, "image", QOBJECT(bs->file->full_open_options));
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for (event = 0; event < BLKDBG_EVENT_MAX; event++) {
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QLIST_FOREACH(rule, &s->rules[event], next) {
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if (rule->action == ACTION_INJECT_ERROR) {
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QDict *inject_error = qdict_new();
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qdict_put_obj(inject_error, "event", QOBJECT(qstring_from_str(
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BlkdebugEvent_lookup[rule->event])));
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qdict_put_obj(inject_error, "state",
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QOBJECT(qint_from_int(rule->state)));
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qdict_put_obj(inject_error, "errno", QOBJECT(qint_from_int(
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rule->options.inject.error)));
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qdict_put_obj(inject_error, "sector", QOBJECT(qint_from_int(
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rule->options.inject.sector)));
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qdict_put_obj(inject_error, "once", QOBJECT(qbool_from_int(
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rule->options.inject.once)));
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qdict_put_obj(inject_error, "immediately",
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QOBJECT(qbool_from_int(
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rule->options.inject.immediately)));
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if (!inject_error_list) {
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inject_error_list = qlist_new();
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}
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qlist_append_obj(inject_error_list, QOBJECT(inject_error));
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} else if (rule->action == ACTION_SET_STATE) {
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QDict *set_state = qdict_new();
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qdict_put_obj(set_state, "event", QOBJECT(qstring_from_str(
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BlkdebugEvent_lookup[rule->event])));
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qdict_put_obj(set_state, "state",
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QOBJECT(qint_from_int(rule->state)));
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qdict_put_obj(set_state, "new_state", QOBJECT(qint_from_int(
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rule->options.set_state.new_state)));
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if (!set_state_list) {
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set_state_list = qlist_new();
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}
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qlist_append_obj(set_state_list, QOBJECT(set_state));
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} else if (rule->action == ACTION_SUSPEND) {
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QDict *suspend = qdict_new();
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qdict_put_obj(suspend, "event", QOBJECT(qstring_from_str(
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BlkdebugEvent_lookup[rule->event])));
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qdict_put_obj(suspend, "state",
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QOBJECT(qint_from_int(rule->state)));
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qdict_put_obj(suspend, "tag", QOBJECT(qstring_from_str(
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rule->options.suspend.tag)));
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if (!suspend_list) {
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suspend_list = qlist_new();
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}
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qlist_append_obj(suspend_list, QOBJECT(suspend));
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}
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}
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}
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if (inject_error_list) {
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qdict_put_obj(opts, "inject-error", QOBJECT(inject_error_list));
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}
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if (set_state_list) {
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qdict_put_obj(opts, "set-state", QOBJECT(set_state_list));
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}
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if (suspend_list) {
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qdict_put_obj(opts, "suspend", QOBJECT(suspend_list));
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}
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bs->full_open_options = opts;
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}
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static BlockDriver bdrv_blkdebug = {
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static BlockDriver bdrv_blkdebug = {
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.format_name = "blkdebug",
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.format_name = "blkdebug",
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.protocol_name = "blkdebug",
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.protocol_name = "blkdebug",
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@ -715,6 +811,7 @@ static BlockDriver bdrv_blkdebug = {
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.bdrv_file_open = blkdebug_open,
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.bdrv_file_open = blkdebug_open,
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.bdrv_close = blkdebug_close,
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.bdrv_close = blkdebug_close,
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.bdrv_getlength = blkdebug_getlength,
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.bdrv_getlength = blkdebug_getlength,
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.bdrv_refresh_filename = blkdebug_refresh_filename,
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.bdrv_aio_readv = blkdebug_aio_readv,
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.bdrv_aio_readv = blkdebug_aio_readv,
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.bdrv_aio_writev = blkdebug_aio_writev,
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.bdrv_aio_writev = blkdebug_aio_writev,
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