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block: Keep bdrv_check*_request()'s return value 

Do not throw away the value returned by bdrv_check_request() and
bdrv_check_byte_request().

Fix up some coding style issues in the proximity of the affected hunks.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 1423162705-32065-17-git-send-email-mreitz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Max Reitz 2015-02-05 13:58:25 -05:00 committed by Stefan Hajnoczi
parent c0191e763b
commit b9c649470b
1 changed files with 24 additions and 11 deletions
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35
block.c
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@ -3098,8 +3098,10 @@ static int coroutine_fn bdrv_co_do_preadv(BlockDriverState *bs,
if (!drv) {
return -ENOMEDIUM;
}
if (bdrv_check_byte_request(bs, offset, bytes)) {
return -EIO;
ret = bdrv_check_byte_request(bs, offset, bytes);
if (ret < 0) {
return ret;
}
if (bs->copy_on_read) {
@ -3342,8 +3344,10 @@ static int coroutine_fn bdrv_co_do_pwritev(BlockDriverState *bs,
if (bs->read_only) {
return -EACCES;
}
if (bdrv_check_byte_request(bs, offset, bytes)) {
return -EIO;
ret = bdrv_check_byte_request(bs, offset, bytes);
if (ret < 0) {
return ret;
}
/* throttling disk I/O */
@ -4197,12 +4201,18 @@ int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors)
{
BlockDriver *drv = bs->drv;
if (!drv)
int ret;
if (!drv) {
return -ENOMEDIUM;
if (!drv->bdrv_write_compressed)
}
if (!drv->bdrv_write_compressed) {
return -ENOTSUP;
if (bdrv_check_request(bs, sector_num, nb_sectors))
return -EIO;
}
ret = bdrv_check_request(bs, sector_num, nb_sectors);
if (ret < 0) {
return ret;
}
assert(QLIST_EMPTY(&bs->dirty_bitmaps));
@ -5117,12 +5127,15 @@ static void coroutine_fn bdrv_discard_co_entry(void *opaque)
int coroutine_fn bdrv_co_discard(BlockDriverState *bs, int64_t sector_num,
int nb_sectors)
{
int max_discard;
int max_discard, ret;
if (!bs->drv) {
return -ENOMEDIUM;
} else if (bdrv_check_request(bs, sector_num, nb_sectors)) {
return -EIO;
}
ret = bdrv_check_request(bs, sector_num, nb_sectors);
if (ret < 0) {
return ret;
} else if (bs->read_only) {
return -EROFS;
}