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author | Kevin Wolf <kwolf@redhat.com> | 2010-04-14 17:30:35 +0200 |
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committer | Kevin Wolf <kwolf@redhat.com> | 2010-05-03 10:07:30 +0200 |
commit | f2feebbd93c251ec0098a9ccf808f7cb1da7f67c (patch) | |
tree | fde14df96e8e8e8ebadde50eb0184183c2e59dc5 /block.c | |
parent | 66f82ceed6781261c09e65fb440ca76842fd0500 (diff) | |
download | hqemu-f2feebbd93c251ec0098a9ccf808f7cb1da7f67c.zip hqemu-f2feebbd93c251ec0098a9ccf808f7cb1da7f67c.tar.gz |
block: bdrv_has_zero_init
This fixes the problem that qemu-img's use of no_zero_init only considered the
no_zero_init flag of the format driver, but not of the underlying protocols.
Between the raw/file split and this fix, converting to host devices is broken.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r-- | block.c | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -1282,6 +1282,19 @@ void bdrv_flush_all(void) } } +int bdrv_has_zero_init(BlockDriverState *bs) +{ + assert(bs->drv); + + if (bs->drv->no_zero_init) { + return 0; + } else if (bs->file) { + return bdrv_has_zero_init(bs->file); + } + + return 1; +} + /* * Returns true iff the specified sector is present in the disk image. Drivers * not implementing the functionality are assumed to not support backing files, |