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sheepdog: fix return value of do_load_save_vm_state

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bdrv_save_vmstate and bdrv_load_vmstate should return the vmstate size
on success, and -errno on error.

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
MORITA Kazutaka 2012-05-30 01:05:15 +09:00 committed by Kevin Wolf
parent 47ce9ef7f8
commit 6f3c714eb7
1 changed files with 5 additions and 5 deletions
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10
block/sheepdog.c
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@ -1957,7 +1957,7 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data,
int64_t pos, int size, int load) int64_t pos, int size, int load)
{ {
int fd, create; int fd, create;
int ret = 0; int ret = 0, remaining = size;
unsigned int data_len; unsigned int data_len;
uint64_t vmstate_oid; uint64_t vmstate_oid;
uint32_t vdi_index; uint32_t vdi_index;
@ -1968,11 +1968,11 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data,
return fd; return fd;
} }
while (size) { while (remaining) {
vdi_index = pos / SD_DATA_OBJ_SIZE; vdi_index = pos / SD_DATA_OBJ_SIZE;
offset = pos % SD_DATA_OBJ_SIZE; offset = pos % SD_DATA_OBJ_SIZE;
data_len = MIN(size, SD_DATA_OBJ_SIZE); data_len = MIN(remaining, SD_DATA_OBJ_SIZE);
vmstate_oid = vid_to_vmstate_oid(s->inode.vdi_id, vdi_index); vmstate_oid = vid_to_vmstate_oid(s->inode.vdi_id, vdi_index);
@ -1993,9 +1993,9 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data,
} }
pos += data_len; pos += data_len;
size -= data_len; remaining -= data_len;
ret += data_len;
} }
ret = size;
cleanup: cleanup:
closesocket(fd); closesocket(fd);
return ret; return ret;