#include "qemu/config-file.h"
#include "block/block_int.h"
#include "qemu/module.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qstring.h"
typedef struct BDRVBlkdebugState {
int state;
} BDRVBlkdebugState;
typedef struct BlkdebugAIOCB {
- BlockDriverAIOCB common;
+ BlockAIOCB common;
QEMUBH *bh;
int ret;
} BlkdebugAIOCB;
QLIST_ENTRY(BlkdebugSuspendedReq) next;
} BlkdebugSuspendedReq;
-static void blkdebug_aio_cancel(BlockDriverAIOCB *blockacb);
-
static const AIOCBInfo blkdebug_aiocb_info = {
- .aiocb_size = sizeof(BlkdebugAIOCB),
- .cancel = blkdebug_aio_cancel,
+ .aiocb_size = sizeof(BlkdebugAIOCB),
};
enum {
[BLKDBG_PWRITEV] = "pwritev",
[BLKDBG_PWRITEV_ZERO] = "pwritev_zero",
[BLKDBG_PWRITEV_DONE] = "pwritev_done",
+
+ [BLKDBG_EMPTY_IMAGE_PREPARE] = "empty_image_prepare",
};
static int get_event_by_name(const char *name, BlkDebugEvent *event)
struct add_rule_data {
BDRVBlkdebugState *s;
int action;
+ Error **errp;
};
static int add_rule(QemuOpts *opts, void *opaque)
/* Find the right event for the rule */
event_name = qemu_opt_get(opts, "event");
- if (!event_name || get_event_by_name(event_name, &event) < 0) {
+ if (!event_name) {
+ error_setg(d->errp, "Missing event name for rule");
+ return -1;
+ } else if (get_event_by_name(event_name, &event) < 0) {
+ error_setg(d->errp, "Invalid event name \"%s\"", event_name);
return -1;
}
}
qemu_config_parse_qdict(options, config_groups, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
ret = -EINVAL;
goto fail;
d.s = s;
d.action = ACTION_INJECT_ERROR;
- qemu_opts_foreach(&inject_error_opts, add_rule, &d, 0);
+ d.errp = &local_err;
+ qemu_opts_foreach(&inject_error_opts, add_rule, &d, 1);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
d.action = ACTION_SET_STATE;
- qemu_opts_foreach(&set_state_opts, add_rule, &d, 0);
+ qemu_opts_foreach(&set_state_opts, add_rule, &d, 1);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
ret = 0;
fail:
opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, options, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
ret = -EINVAL;
goto out;
s->state = 1;
/* Open the backing file */
+ assert(bs->file == NULL);
ret = bdrv_open_image(&bs->file, qemu_opt_get(opts, "x-image"), options, "image",
- flags, true, false, &local_err);
+ flags | BDRV_O_PROTOCOL, false, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
struct BlkdebugAIOCB *acb = opaque;
qemu_bh_delete(acb->bh);
acb->common.cb(acb->common.opaque, acb->ret);
- qemu_aio_release(acb);
-}
-
-static void blkdebug_aio_cancel(BlockDriverAIOCB *blockacb)
-{
- BlkdebugAIOCB *acb = container_of(blockacb, BlkdebugAIOCB, common);
- qemu_aio_release(acb);
+ qemu_aio_unref(acb);
}
-static BlockDriverAIOCB *inject_error(BlockDriverState *bs,
- BlockDriverCompletionFunc *cb, void *opaque, BlkdebugRule *rule)
+static BlockAIOCB *inject_error(BlockDriverState *bs,
+ BlockCompletionFunc *cb, void *opaque, BlkdebugRule *rule)
{
BDRVBlkdebugState *s = bs->opaque;
int error = rule->options.inject.error;
acb = qemu_aio_get(&blkdebug_aiocb_info, bs, cb, opaque);
acb->ret = -error;
- bh = qemu_bh_new(error_callback_bh, acb);
+ bh = aio_bh_new(bdrv_get_aio_context(bs), error_callback_bh, acb);
acb->bh = bh;
qemu_bh_schedule(bh);
return &acb->common;
}
-static BlockDriverAIOCB *blkdebug_aio_readv(BlockDriverState *bs,
+static BlockAIOCB *blkdebug_aio_readv(BlockDriverState *bs,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
+ BlockCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
BlkdebugRule *rule = NULL;
return bdrv_aio_readv(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
}
-static BlockDriverAIOCB *blkdebug_aio_writev(BlockDriverState *bs,
+static BlockAIOCB *blkdebug_aio_writev(BlockDriverState *bs,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
+ BlockCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
BlkdebugRule *rule = NULL;
return bdrv_aio_writev(bs->file, sector_num, qiov, nb_sectors, cb, opaque);
}
+static BlockAIOCB *blkdebug_aio_flush(BlockDriverState *bs,
+ BlockCompletionFunc *cb, void *opaque)
+{
+ BDRVBlkdebugState *s = bs->opaque;
+ BlkdebugRule *rule = NULL;
+
+ QSIMPLEQ_FOREACH(rule, &s->active_rules, active_next) {
+ if (rule->options.inject.sector == -1) {
+ break;
+ }
+ }
+
+ if (rule && rule->options.inject.error) {
+ return inject_error(bs, cb, opaque, rule);
+ }
+
+ return bdrv_aio_flush(bs->file, cb, opaque);
+}
+
static void blkdebug_close(BlockDriverState *bs)
{
return bdrv_getlength(bs->file);
}
+static void blkdebug_refresh_filename(BlockDriverState *bs)
+{
+ QDict *opts;
+ const QDictEntry *e;
+ bool force_json = false;
+
+ 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 (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));
+ }
+ }
+
+ bs->full_open_options = opts;
+}
+
static BlockDriver bdrv_blkdebug = {
.format_name = "blkdebug",
.protocol_name = "blkdebug",
.bdrv_file_open = blkdebug_open,
.bdrv_close = blkdebug_close,
.bdrv_getlength = blkdebug_getlength,
+ .bdrv_refresh_filename = blkdebug_refresh_filename,
.bdrv_aio_readv = blkdebug_aio_readv,
.bdrv_aio_writev = blkdebug_aio_writev,
+ .bdrv_aio_flush = blkdebug_aio_flush,
.bdrv_debug_event = blkdebug_debug_event,
.bdrv_debug_breakpoint = blkdebug_debug_breakpoint,
projects / qemu.git / blobdiff