*
*/
+#include "qemu/osdep.h"
+#include "qapi/error.h"
#include "qemu/timer.h"
#include "trace.h"
#include "qed.h"
#include "qapi/qmp/qerror.h"
#include "migration/migration.h"
+#include "sysemu/block-backend.h"
static const AIOCBInfo qed_aiocb_info = {
.aiocb_size = sizeof(QEDAIOCB),
int ret;
qed_header_cpu_to_le(&s->header, &le);
- ret = bdrv_pwrite(s->bs->file, 0, &le, sizeof(le));
+ ret = bdrv_pwrite(s->bs->file->bs, 0, &le, sizeof(le));
if (ret != sizeof(le)) {
return ret;
}
/* Update header */
qed_header_cpu_to_le(&s->header, (QEDHeader *)write_header_cb->buf);
- bdrv_aio_writev(s->bs->file, 0, &write_header_cb->qiov,
+ bdrv_aio_writev(s->bs->file->bs, 0, &write_header_cb->qiov,
write_header_cb->nsectors, qed_write_header_cb,
write_header_cb);
}
write_header_cb->iov.iov_len = len;
qemu_iovec_init_external(&write_header_cb->qiov, &write_header_cb->iov, 1);
- bdrv_aio_readv(s->bs->file, 0, &write_header_cb->qiov, nsectors,
+ bdrv_aio_readv(s->bs->file->bs, 0, &write_header_cb->qiov, nsectors,
qed_write_header_read_cb, write_header_cb);
}
* migration.
*/
timer_mod(s->need_check_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
- get_ticks_per_sec() * QED_NEED_CHECK_TIMEOUT);
+ NANOSECONDS_PER_SECOND * QED_NEED_CHECK_TIMEOUT);
}
/* It's okay to call this multiple times or when no timer is started */
timer_del(s->need_check_timer);
}
-static void bdrv_qed_rebind(BlockDriverState *bs)
-{
- BDRVQEDState *s = bs->opaque;
- s->bs = bs;
-}
-
static void bdrv_qed_detach_aio_context(BlockDriverState *bs)
{
BDRVQEDState *s = bs->opaque;
s->bs = bs;
QSIMPLEQ_INIT(&s->allocating_write_reqs);
- ret = bdrv_pread(bs->file, 0, &le_header, sizeof(le_header));
+ ret = bdrv_pread(bs->file->bs, 0, &le_header, sizeof(le_header));
if (ret < 0) {
return ret;
}
}
if (s->header.features & ~QED_FEATURE_MASK) {
/* image uses unsupported feature bits */
- char buf[64];
- snprintf(buf, sizeof(buf), "%" PRIx64,
- s->header.features & ~QED_FEATURE_MASK);
- error_setg(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE,
- bdrv_get_device_or_node_name(bs), "QED", buf);
+ error_setg(errp, "Unsupported QED features: %" PRIx64,
+ s->header.features & ~QED_FEATURE_MASK);
return -ENOTSUP;
}
if (!qed_is_cluster_size_valid(s->header.cluster_size)) {
}
/* Round down file size to the last cluster */
- file_size = bdrv_getlength(bs->file);
+ file_size = bdrv_getlength(bs->file->bs);
if (file_size < 0) {
return file_size;
}
return -EINVAL;
}
- ret = qed_read_string(bs->file, s->header.backing_filename_offset,
+ ret = qed_read_string(bs->file->bs, s->header.backing_filename_offset,
s->header.backing_filename_size, bs->backing_file,
sizeof(bs->backing_file));
if (ret < 0) {
* feature is no longer valid.
*/
if ((s->header.autoclear_features & ~QED_AUTOCLEAR_FEATURE_MASK) != 0 &&
- !bdrv_is_read_only(bs->file) && !(flags & BDRV_O_INCOMING)) {
+ !bdrv_is_read_only(bs->file->bs) && !(flags & BDRV_O_INACTIVE)) {
s->header.autoclear_features &= QED_AUTOCLEAR_FEATURE_MASK;
ret = qed_write_header_sync(s);
}
/* From here on only known autoclear feature bits are valid */
- bdrv_flush(bs->file);
+ bdrv_flush(bs->file->bs);
}
s->l1_table = qed_alloc_table(s);
* potentially inconsistent images to be opened read-only. This can
* aid data recovery from an otherwise inconsistent image.
*/
- if (!bdrv_is_read_only(bs->file) &&
- !(flags & BDRV_O_INCOMING)) {
+ if (!bdrv_is_read_only(bs->file->bs) &&
+ !(flags & BDRV_O_INACTIVE)) {
BdrvCheckResult result = {0};
ret = qed_check(s, &result, true);
bdrv_qed_detach_aio_context(bs);
/* Ensure writes reach stable storage */
- bdrv_flush(bs->file);
+ bdrv_flush(bs->file->bs);
/* Clean shutdown, no check required on next open */
if (s->header.features & QED_F_NEED_CHECK) {
size_t l1_size = header.cluster_size * header.table_size;
Error *local_err = NULL;
int ret = 0;
- BlockDriverState *bs;
+ BlockBackend *blk;
ret = bdrv_create_file(filename, opts, &local_err);
if (ret < 0) {
return ret;
}
- bs = NULL;
- ret = bdrv_open(&bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL, NULL,
- &local_err);
- if (ret < 0) {
+ blk = blk_new_open(filename, NULL, NULL,
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
+ if (blk == NULL) {
error_propagate(errp, local_err);
- return ret;
+ return -EIO;
}
+ blk_set_allow_write_beyond_eof(blk, true);
+
/* File must start empty and grow, check truncate is supported */
- ret = bdrv_truncate(bs, 0);
+ ret = blk_truncate(blk, 0);
if (ret < 0) {
goto out;
}
}
qed_header_cpu_to_le(&header, &le_header);
- ret = bdrv_pwrite(bs, 0, &le_header, sizeof(le_header));
+ ret = blk_pwrite(blk, 0, &le_header, sizeof(le_header));
if (ret < 0) {
goto out;
}
- ret = bdrv_pwrite(bs, sizeof(le_header), backing_file,
- header.backing_filename_size);
+ ret = blk_pwrite(blk, sizeof(le_header), backing_file,
+ header.backing_filename_size);
if (ret < 0) {
goto out;
}
l1_table = g_malloc0(l1_size);
- ret = bdrv_pwrite(bs, header.l1_table_offset, l1_table, l1_size);
+ ret = blk_pwrite(blk, header.l1_table_offset, l1_table, l1_size);
if (ret < 0) {
goto out;
}
ret = 0; /* success */
out:
g_free(l1_table);
- bdrv_unref(bs);
+ blk_unref(blk);
return ret;
}
uint64_t pos;
int64_t status;
int *pnum;
+ BlockDriverState **file;
} QEDIsAllocatedCB;
static void qed_is_allocated_cb(void *opaque, int ret, uint64_t offset, size_t len)
case QED_CLUSTER_FOUND:
offset |= qed_offset_into_cluster(s, cb->pos);
cb->status = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset;
+ *cb->file = cb->bs->file->bs;
break;
case QED_CLUSTER_ZERO:
cb->status = BDRV_BLOCK_ZERO;
static int64_t coroutine_fn bdrv_qed_co_get_block_status(BlockDriverState *bs,
int64_t sector_num,
- int nb_sectors, int *pnum)
+ int nb_sectors, int *pnum,
+ BlockDriverState **file)
{
BDRVQEDState *s = bs->opaque;
size_t len = (size_t)nb_sectors * BDRV_SECTOR_SIZE;
.pos = (uint64_t)sector_num * BDRV_SECTOR_SIZE,
.status = BDRV_BLOCK_OFFSET_MASK,
.pnum = pnum,
+ .file = file,
};
QEDRequest request = { .l2_table = NULL };
/* If there is a backing file, get its length. Treat the absence of a
* backing file like a zero length backing file.
*/
- if (s->bs->backing_hd) {
- int64_t l = bdrv_getlength(s->bs->backing_hd);
+ if (s->bs->backing) {
+ int64_t l = bdrv_getlength(s->bs->backing->bs);
if (l < 0) {
cb(opaque, l);
return;
qemu_iovec_concat(*backing_qiov, qiov, 0, size);
BLKDBG_EVENT(s->bs->file, BLKDBG_READ_BACKING_AIO);
- bdrv_aio_readv(s->bs->backing_hd, pos / BDRV_SECTOR_SIZE,
+ bdrv_aio_readv(s->bs->backing->bs, pos / BDRV_SECTOR_SIZE,
*backing_qiov, size / BDRV_SECTOR_SIZE, cb, opaque);
}
}
BLKDBG_EVENT(s->bs->file, BLKDBG_COW_WRITE);
- bdrv_aio_writev(s->bs->file, copy_cb->offset / BDRV_SECTOR_SIZE,
+ bdrv_aio_writev(s->bs->file->bs, copy_cb->offset / BDRV_SECTOR_SIZE,
©_cb->qiov, copy_cb->qiov.size / BDRV_SECTOR_SIZE,
qed_copy_from_backing_file_cb, copy_cb);
}
QEDAIOCB *acb = opaque;
BDRVQEDState *s = acb_to_s(acb);
- if (!bdrv_aio_flush(s->bs->file, qed_aio_write_l2_update_cb, opaque)) {
+ if (!bdrv_aio_flush(s->bs->file->bs, qed_aio_write_l2_update_cb, opaque)) {
qed_aio_complete(acb, -EIO);
}
}
if (acb->find_cluster_ret == QED_CLUSTER_FOUND) {
next_fn = qed_aio_next_io;
} else {
- if (s->bs->backing_hd) {
+ if (s->bs->backing) {
next_fn = qed_aio_write_flush_before_l2_update;
} else {
next_fn = qed_aio_write_l2_update_cb;
}
BLKDBG_EVENT(s->bs->file, BLKDBG_WRITE_AIO);
- bdrv_aio_writev(s->bs->file, offset / BDRV_SECTOR_SIZE,
+ bdrv_aio_writev(s->bs->file->bs, offset / BDRV_SECTOR_SIZE,
&acb->cur_qiov, acb->cur_qiov.size / BDRV_SECTOR_SIZE,
next_fn, acb);
}
static bool qed_should_set_need_check(BDRVQEDState *s)
{
/* The flush before L2 update path ensures consistency */
- if (s->bs->backing_hd) {
+ if (s->bs->backing) {
return false;
}
}
BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
- bdrv_aio_readv(bs->file, offset / BDRV_SECTOR_SIZE,
+ bdrv_aio_readv(bs->file->bs, offset / BDRV_SECTOR_SIZE,
&acb->cur_qiov, acb->cur_qiov.size / BDRV_SECTOR_SIZE,
qed_aio_next_io, acb);
return;
struct iovec iov;
/* Refuse if there are untouched backing file sectors */
- if (bs->backing_hd) {
+ if (bs->backing) {
if (qed_offset_into_cluster(s, sector_num * BDRV_SECTOR_SIZE) != 0) {
return -ENOTSUP;
}
}
/* Write new header */
- ret = bdrv_pwrite_sync(bs->file, 0, buffer, buffer_len);
+ ret = bdrv_pwrite_sync(bs->file->bs, 0, buffer, buffer_len);
g_free(buffer);
if (ret == 0) {
memcpy(&s->header, &new_header, sizeof(new_header));
bdrv_qed_close(bs);
- bdrv_invalidate_cache(bs->file, &local_err);
+ bdrv_invalidate_cache(bs->file->bs, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
memset(s, 0, sizeof(BDRVQEDState));
ret = bdrv_qed_open(bs, NULL, bs->open_flags, &local_err);
if (local_err) {
- error_setg(errp, "Could not reopen qed layer: %s",
- error_get_pretty(local_err));
- error_free(local_err);
+ error_propagate(errp, local_err);
+ error_prepend(errp, "Could not reopen qed layer: ");
return;
} else if (ret < 0) {
error_setg_errno(errp, -ret, "Could not reopen qed layer");
.supports_backing = true,
.bdrv_probe = bdrv_qed_probe,
- .bdrv_rebind = bdrv_qed_rebind,
.bdrv_open = bdrv_qed_open,
.bdrv_close = bdrv_qed_close,
.bdrv_reopen_prepare = bdrv_qed_reopen_prepare,