OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

block: fix aio_flush segfaults for read-only protocols (e.g. curl)

Browse Source 
Not all block format drivers expose an io_flush method (reasonable for
read-only protocols), so calling io_flush there will immediately segfault.

Fix by checking for the method's existence before calling it.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Avi Kivity 2010-05-16 14:59:57 +03:00 committed by Kevin Wolf
parent 81a204e443
commit c53a7285b4
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
aio.c
View File

@ -113,8 +113,10 @@ void qemu_aio_flush(void)
qemu_aio_wait(); qemu_aio_wait();
QLIST_FOREACH(node, &aio_handlers, node) { QLIST_FOREACH(node, &aio_handlers, node) {
if (node->io_flush) {
ret |= node->io_flush(node->opaque); ret |= node->io_flush(node->opaque);
} }
}
} while (qemu_bh_poll() || ret > 0); } while (qemu_bh_poll() || ret > 0);
} }