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block: add bdrv_set_read_only() helper function

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We have a helper wrapper for checking for the BDS read_only flag,
add a helper wrapper to set the read_only flag as well.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 9b18972d05f5fa2ac16c014f0af98d680553048d.1491597120.git.jcody@redhat.com
This commit is contained in:
Jeff Cody 2017-04-07 16:55:25 -04:00
parent a98f49f46a
commit fe5241bfe3
7 changed files with 12 additions and 6 deletions
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2
block/cloop.c
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@ -72,7 +72,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
bs->read_only = true;
bdrv_set_read_only(bs, true);
/* read header */
ret = bdrv_pread(bs->file, 128, &s->block_size, 4);