@@ -507,7 +507,7 @@ static int blk_check_byte_request(BlockBackend *blk, int64_t offset,
return -EIO;
}
- if (!blk_is_inserted(blk)) {
+ if (!blk_is_available(blk)) {
return -ENOMEDIUM;
}
@@ -635,6 +635,10 @@ int blk_pwrite(BlockBackend *blk, int64_t offset, const void *buf, int count)
int64_t blk_getlength(BlockBackend *blk)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_getlength(blk->bs);
}
@@ -645,6 +649,10 @@ void blk_get_geometry(BlockBackend *blk, uint64_t *nb_sectors_ptr)
int64_t blk_nb_sectors(BlockBackend *blk)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_nb_sectors(blk->bs);
}
@@ -675,6 +683,10 @@ BlockAIOCB *blk_aio_writev(BlockBackend *blk, int64_t sector_num,
BlockAIOCB *blk_aio_flush(BlockBackend *blk,
BlockCompletionFunc *cb, void *opaque)
{
+ if (!blk_is_available(blk)) {
+ return abort_aio_request(blk, cb, opaque, -ENOMEDIUM);
+ }
+
return bdrv_aio_flush(blk->bs, cb, opaque);
}
@@ -716,12 +728,20 @@ int blk_aio_multiwrite(BlockBackend *blk, BlockRequest *reqs, int num_reqs)
int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_ioctl(blk->bs, req, buf);
}
BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf,
BlockCompletionFunc *cb, void *opaque)
{
+ if (!blk_is_available(blk)) {
+ return abort_aio_request(blk, cb, opaque, -ENOMEDIUM);
+ }
+
return bdrv_aio_ioctl(blk->bs, req, buf, cb, opaque);
}
@@ -737,11 +757,19 @@ int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors)
int blk_co_flush(BlockBackend *blk)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_co_flush(blk->bs);
}
int blk_flush(BlockBackend *blk)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_flush(blk->bs);
}
@@ -858,6 +886,11 @@ void blk_set_enable_write_cache(BlockBackend *blk, bool wce)
void blk_invalidate_cache(BlockBackend *blk, Error **errp)
{
+ if (!blk->bs) {
+ error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, blk->name);
+ return;
+ }
+
bdrv_invalidate_cache(blk->bs, errp);
}
@@ -1013,6 +1046,10 @@ int blk_write_compressed(BlockBackend *blk, int64_t sector_num,
int blk_truncate(BlockBackend *blk, int64_t offset)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_truncate(blk->bs, offset);
}
@@ -1029,11 +1066,19 @@ int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors)
int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
int64_t pos, int size)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_save_vmstate(blk->bs, buf, pos, size);
}
int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size)
{
+ if (!blk_is_available(blk)) {
+ return -ENOMEDIUM;
+ }
+
return bdrv_load_vmstate(blk->bs, buf, pos, size);
}