diff options
| author | Max Reitz <mreitz@redhat.com> | 2017-06-13 22:20:52 +0200 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2017-07-11 17:45:01 +0200 |
| commit | 8243ccb7433e59a3faa3cca27fb6c40d6da2b37c (patch) | |
| tree | 18ab94c4ea476c161f7c579c30e9203abb96afbc /block/file-posix.c | |
| parent | 32a1681adc44f52e7c8a19408cd3be8452a0897b (diff) | |
block: Add PreallocMode to BD.bdrv_truncate()
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>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170613202107.10125-2-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/file-posix.c')
| -rw-r--r-- | block/file-posix.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index 3927fabf06..4a40976d4c 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1624,12 +1624,19 @@ 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"); |