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authorDon Dugger <n0ano@n0ano.com>2016-06-03 03:33:22 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-06-03 03:33:23 +0000
commitda27230f80795d0028333713f036d44c53cb0e68 (patch)
treeb3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/block/vdi.c
parent0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff)
parent437fd90c0250dee670290f9b714253671a990160 (diff)
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/block/vdi.c')
-rw-r--r--qemu/block/vdi.c47
1 files changed, 28 insertions, 19 deletions
diff --git a/qemu/block/vdi.c b/qemu/block/vdi.c
index 7642ef359..75d4819ed 100644
--- a/qemu/block/vdi.c
+++ b/qemu/block/vdi.c
@@ -49,11 +49,14 @@
* so this seems to be reasonable.
*/
-#include "qemu-common.h"
+#include "qemu/osdep.h"
+#include "qapi/error.h"
#include "block/block_int.h"
+#include "sysemu/block-backend.h"
#include "qemu/module.h"
#include "migration/migration.h"
-#include "block/coroutine.h"
+#include "qemu/coroutine.h"
+#include "qemu/cutils.h"
#if defined(CONFIG_UUID)
#include <uuid/uuid.h>
@@ -399,7 +402,7 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
logout("\n");
- ret = bdrv_read(bs->file, 0, (uint8_t *)&header, 1);
+ ret = bdrv_read(bs->file->bs, 0, (uint8_t *)&header, 1);
if (ret < 0) {
goto fail;
}
@@ -490,13 +493,14 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
bmap_size = header.blocks_in_image * sizeof(uint32_t);
bmap_size = DIV_ROUND_UP(bmap_size, SECTOR_SIZE);
- s->bmap = qemu_try_blockalign(bs->file, bmap_size * SECTOR_SIZE);
+ s->bmap = qemu_try_blockalign(bs->file->bs, bmap_size * SECTOR_SIZE);
if (s->bmap == NULL) {
ret = -ENOMEM;
goto fail;
}
- ret = bdrv_read(bs->file, s->bmap_sector, (uint8_t *)s->bmap, bmap_size);
+ ret = bdrv_read(bs->file->bs, s->bmap_sector, (uint8_t *)s->bmap,
+ bmap_size);
if (ret < 0) {
goto fail_free_bmap;
}
@@ -525,7 +529,7 @@ static int vdi_reopen_prepare(BDRVReopenState *state,
}
static int64_t coroutine_fn vdi_co_get_block_status(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors, int *pnum)
+ int64_t sector_num, int nb_sectors, int *pnum, BlockDriverState **file)
{
/* TODO: Check for too large sector_num (in bdrv_is_allocated or here). */
BDRVVdiState *s = (BDRVVdiState *)bs->opaque;
@@ -549,6 +553,7 @@ static int64_t coroutine_fn vdi_co_get_block_status(BlockDriverState *bs,
offset = s->header.offset_data +
(uint64_t)bmap_entry * s->block_size +
sector_in_block * SECTOR_SIZE;
+ *file = bs->file->bs;
return BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset;
}
@@ -585,7 +590,7 @@ static int vdi_co_read(BlockDriverState *bs,
uint64_t offset = s->header.offset_data / SECTOR_SIZE +
(uint64_t)bmap_entry * s->block_sectors +
sector_in_block;
- ret = bdrv_read(bs->file, offset, buf, n_sectors);
+ ret = bdrv_read(bs->file->bs, offset, buf, n_sectors);
}
logout("%u sectors read\n", n_sectors);
@@ -653,7 +658,7 @@ static int vdi_co_write(BlockDriverState *bs,
* acquire the lock and thus the padded cluster is written before
* the other coroutines can write to the affected area. */
qemu_co_mutex_lock(&s->write_lock);
- ret = bdrv_write(bs->file, offset, block, s->block_sectors);
+ ret = bdrv_write(bs->file->bs, offset, block, s->block_sectors);
qemu_co_mutex_unlock(&s->write_lock);
} else {
uint64_t offset = s->header.offset_data / SECTOR_SIZE +
@@ -669,7 +674,7 @@ static int vdi_co_write(BlockDriverState *bs,
* that that write operation has returned (there may be other writes
* in flight, but they do not concern this very operation). */
qemu_co_mutex_unlock(&s->write_lock);
- ret = bdrv_write(bs->file, offset, buf, n_sectors);
+ ret = bdrv_write(bs->file->bs, offset, buf, n_sectors);
}
nb_sectors -= n_sectors;
@@ -694,7 +699,7 @@ static int vdi_co_write(BlockDriverState *bs,
assert(VDI_IS_ALLOCATED(bmap_first));
*header = s->header;
vdi_header_to_le(header);
- ret = bdrv_write(bs->file, 0, block, 1);
+ ret = bdrv_write(bs->file->bs, 0, block, 1);
g_free(block);
block = NULL;
@@ -712,7 +717,7 @@ static int vdi_co_write(BlockDriverState *bs,
base = ((uint8_t *)&s->bmap[0]) + bmap_first * SECTOR_SIZE;
logout("will write %u block map sectors starting from entry %u\n",
n_sectors, bmap_first);
- ret = bdrv_write(bs->file, offset, base, n_sectors);
+ ret = bdrv_write(bs->file->bs, offset, base, n_sectors);
}
return ret;
@@ -730,7 +735,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
size_t bmap_size;
int64_t offset = 0;
Error *local_err = NULL;
- BlockDriverState *bs = NULL;
+ BlockBackend *blk = NULL;
uint32_t *bmap = NULL;
logout("\n");
@@ -763,13 +768,17 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
error_propagate(errp, local_err);
goto exit;
}
- ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | 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);
+ ret = -EIO;
goto exit;
}
+ blk_set_allow_write_beyond_eof(blk, true);
+
/* We need enough blocks to store the given disk size,
so always round up. */
blocks = DIV_ROUND_UP(bytes, block_size);
@@ -799,7 +808,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
vdi_header_print(&header);
#endif
vdi_header_to_le(&header);
- ret = bdrv_pwrite_sync(bs, offset, &header, sizeof(header));
+ ret = blk_pwrite(blk, offset, &header, sizeof(header));
if (ret < 0) {
error_setg(errp, "Error writing header to %s", filename);
goto exit;
@@ -820,7 +829,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
bmap[i] = VDI_UNALLOCATED;
}
}
- ret = bdrv_pwrite_sync(bs, offset, bmap, bmap_size);
+ ret = blk_pwrite(blk, offset, bmap, bmap_size);
if (ret < 0) {
error_setg(errp, "Error writing bmap to %s", filename);
goto exit;
@@ -829,7 +838,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
}
if (image_type == VDI_TYPE_STATIC) {
- ret = bdrv_truncate(bs, offset + blocks * block_size);
+ ret = blk_truncate(blk, offset + blocks * block_size);
if (ret < 0) {
error_setg(errp, "Failed to statically allocate %s", filename);
goto exit;
@@ -837,7 +846,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
}
exit:
- bdrv_unref(bs);
+ blk_unref(blk);
g_free(bmap);
return ret;
}