@@ -196,7 +196,8 @@ struct BlockDriver {
int coroutine_fn (*bdrv_co_flush_to_os)(BlockDriverState *bs);
const char *protocol_name;
- int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset, Error **errp);
+ int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp);
int64_t (*bdrv_getlength)(BlockDriverState *bs);
bool has_variable_length;
@@ -3285,7 +3285,7 @@ int bdrv_truncate(BdrvChild *child, int64_t offset, Error **errp)
return -EACCES;
}
- ret = drv->bdrv_truncate(bs, offset, errp);
+ ret = drv->bdrv_truncate(bs, offset, PREALLOC_MODE_OFF, errp);
if (ret == 0) {
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
bdrv_dirty_bitmap_truncate(bs);
@@ -661,8 +661,15 @@ static int64_t blkdebug_getlength(BlockDriverState *bs)
return bdrv_getlength(bs->file->bs);
}
-static int blkdebug_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int blkdebug_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
return bdrv_truncate(bs->file, offset, errp);
}
@@ -382,12 +382,18 @@ static int block_crypto_create_generic(QCryptoBlockFormat format,
}
static int block_crypto_truncate(BlockDriverState *bs, int64_t offset,
- Error **errp)
+ PreallocMode prealloc, Error **errp)
{
BlockCrypto *crypto = bs->opaque;
size_t payload_offset =
qcrypto_block_get_payload_offset(crypto->block);
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
offset += payload_offset;
return bdrv_truncate(bs->file, offset, errp);
@@ -1407,12 +1407,19 @@ static void raw_close(BlockDriverState *bs)
}
}
-static int raw_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int raw_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
struct stat st;
int ret;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (fstat(s->fd, &st)) {
ret = -errno;
error_setg_errno(errp, -ret, "Failed to fstat() the file");
@@ -460,12 +460,19 @@ static void raw_close(BlockDriverState *bs)
}
}
-static int raw_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int raw_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
LONG low, high;
DWORD dwPtrLow;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
low = offset;
high = offset >> 32;
@@ -1093,11 +1093,17 @@ static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
}
static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset,
- Error **errp)
+ PreallocMode prealloc, Error **errp)
{
int ret;
BDRVGlusterState *s = bs->opaque;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
ret = glfs_ftruncate(s->fd, offset);
if (ret < 0) {
ret = -errno;
@@ -2060,11 +2060,18 @@ static void iscsi_reopen_commit(BDRVReopenState *reopen_state)
}
}
-static int iscsi_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int iscsi_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
IscsiLun *iscsilun = bs->opaque;
Error *local_err = NULL;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (iscsilun->type != TYPE_DISK) {
error_setg(errp, "Cannot resize non-disk iSCSI devices");
return -ENOTSUP;
@@ -764,11 +764,18 @@ static int64_t nfs_get_allocated_file_size(BlockDriverState *bs)
return (task.ret < 0 ? task.ret : st.st_blocks * 512);
}
-static int nfs_file_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int nfs_file_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
NFSClient *client = bs->opaque;
int ret;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
ret = nfs_ftruncate(client->context, client->fh, offset);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to truncate file");
@@ -2525,12 +2525,19 @@ static coroutine_fn int qcow2_co_pdiscard(BlockDriverState *bs,
return ret;
}
-static int qcow2_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int qcow2_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVQcow2State *s = bs->opaque;
int64_t new_l1_size;
int ret;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (offset & 511) {
error_setg(errp, "The new size must be a multiple of 512");
return -EINVAL;
@@ -1518,12 +1518,19 @@ static int coroutine_fn bdrv_qed_co_pwrite_zeroes(BlockDriverState *bs,
return cb.ret;
}
-static int bdrv_qed_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int bdrv_qed_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVQEDState *s = bs->opaque;
uint64_t old_image_size;
int ret;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (!qed_is_image_size_valid(offset, s->header.cluster_size,
s->header.table_size)) {
error_setg(errp, "Invalid image size specified");
@@ -327,10 +327,17 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
}
}
-static int raw_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int raw_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVRawState *s = bs->opaque;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
if (s->has_size) {
error_setg(errp, "Cannot resize fixed-size raw disks");
return -ENOTSUP;
@@ -886,11 +886,18 @@ static int64_t qemu_rbd_getlength(BlockDriverState *bs)
return info.size;
}
-static int qemu_rbd_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int qemu_rbd_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVRBDState *s = bs->opaque;
int r;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
r = rbd_resize(s->image, offset);
if (r < 0) {
error_setg_errno(errp, -r, "Failed to resize file");
@@ -2159,13 +2159,20 @@ static int64_t sd_getlength(BlockDriverState *bs)
return s->inode.vdi_size;
}
-static int sd_truncate(BlockDriverState *bs, int64_t offset, Error **errp)
+static int sd_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
{
BDRVSheepdogState *s = bs->opaque;
int ret, fd;
unsigned int datalen;
uint64_t max_vdi_size;
+ if (prealloc != PREALLOC_MODE_OFF) {
+ error_setg(errp, "Unsupported preallocation mode '%s'",
+ PreallocMode_lookup[prealloc]);
+ return -ENOTSUP;
+ }
+
max_vdi_size = (UINT64_C(1) << s->inode.block_size_shift) * MAX_DATA_OBJS;
if (offset < s->inode.vdi_size) {
error_setg(errp, "shrinking is not supported");
@@ -2454,7 +2461,7 @@ static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num,
BDRVSheepdogState *s = bs->opaque;
if (offset > s->inode.vdi_size) {
- ret = sd_truncate(bs, offset, NULL);
+ ret = sd_truncate(bs, offset, PREALLOC_MODE_OFF, NULL);
if (ret < 0) {
return ret;
}
Add a PreallocMode parameter to the bdrv_truncate() function implemented by each block driver. Currently, we always pass PREALLOC_MODE_OFF and no driver accepts anything else. Signed-off-by: Max Reitz <mreitz@redhat.com> --- include/block/block_int.h | 3 ++- block.c | 2 +- block/blkdebug.c | 9 ++++++++- block/crypto.c | 8 +++++++- block/file-posix.c | 9 ++++++++- block/file-win32.c | 9 ++++++++- block/gluster.c | 8 +++++++- block/iscsi.c | 9 ++++++++- block/nfs.c | 9 ++++++++- block/qcow2.c | 9 ++++++++- block/qed.c | 9 ++++++++- block/raw-format.c | 9 ++++++++- block/rbd.c | 9 ++++++++- block/sheepdog.c | 11 +++++++++-- 14 files changed, 98 insertions(+), 15 deletions(-)