Similar to other handle_aiocb_* functions, handle_aiocb_ioctl needs to cater
for the possibility that ioctl is interrupted by a signal. Otherwise, the
I/O is incorrectly reported as a failure to the guest.
Reported-by: Gordon Watson <gwatson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/file-posix.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 74b8216077..a26eab0ac3 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -1347,7 +1347,9 @@ static int handle_aiocb_ioctl(void *opaque)
RawPosixAIOData *aiocb = opaque;
int ret;
- ret = ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf);
+ do {
+ ret = ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf);
+ } while (ret == -1 && errno == EINTR);
if (ret == -1) {
return -errno;
}