From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60696) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bBOwE-0006zm-Cm for qemu-devel@nongnu.org; Fri, 10 Jun 2016 12:05:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bBOwD-00025g-Bm for qemu-devel@nongnu.org; Fri, 10 Jun 2016 12:05:38 -0400 From: Kevin Wolf Date: Fri, 10 Jun 2016 18:05:19 +0200 Message-Id: <1465574722-27656-4-git-send-email-kwolf@redhat.com> In-Reply-To: <1465574722-27656-1-git-send-email-kwolf@redhat.com> References: <1465574722-27656-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH 3/6] block: Allow .bdrv_load/save_vmstate() to return 0/-errno List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, eblake@redhat.com, mreitz@redhat.com, qemu-devel@nongnu.org, famz@redhat.com, stefanha@redhat.com The return value of .bdrv_load/save_vmstate() can be any non-negative number in case of success now. It used to be bytes/-errno. Signed-off-by: Kevin Wolf --- block/io.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/block/io.c b/block/io.c index 602c7d3..bca244c 100644 --- a/block/io.c +++ b/block/io.c @@ -1839,9 +1839,16 @@ int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, .iov_base = (void *) buf, .iov_len = size, }; + int ret; qemu_iovec_init_external(&qiov, &iov, 1); - return bdrv_writev_vmstate(bs, &qiov, pos); + + ret = bdrv_writev_vmstate(bs, &qiov, pos); + if (ret < 0) { + return ret; + } + + return size; } int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) @@ -1870,7 +1877,12 @@ int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, int ret; qemu_iovec_init_external(&qiov, &iov, 1); - return bdrv_readv_vmstate(bs, &qiov, pos); + ret = bdrv_readv_vmstate(bs, &qiov, pos); + if (ret < 0) { + return ret; + } + + return size; } int bdrv_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos) -- 1.8.3.1