From: Ryne Li <lizhenqiangsnake@gmail.com>
Date: Mon, 10 Oct 2016 20:00:12 +0000 (-0400)
Subject: osd: add check of ceph_osd_op for compatibility
X-Git-Tag: v11.1.0~307^2~2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=037014c8d1a8c30532b588c53542d8546a29b983;p=ceph.git

osd: add check of ceph_osd_op for compatibility

Signed-off-by: Ryne Li <lizhenqiangsnake@gmail.com>
---

diff --git a/src/include/rados.h b/src/include/rados.h
index 66520ba5b22f..7525339b1b09 100644
--- a/src/include/rados.h
+++ b/src/include/rados.h
@@ -562,6 +562,18 @@ struct ceph_osd_op {
 	__le32 payload_len;
 } __attribute__ ((packed));
 
+/*
+ * Check the compatibility of struct ceph_osd_op
+ *  (2+4+(2*8+8+4)+4) = (sizeof(ceph_osd_op::op) +
+ *                     sizeof(ceph_osd_op::flags) +
+ *                     sizeof(ceph_osd_op::extent) +
+ *                     sizeof(ceph_osd_op::payload_len))
+ */
+#ifdef __cplusplus
+static_assert(sizeof(ceph_osd_op) == (2+4+(2*8+8+4)+4),
+              "sizeof(ceph_osd_op) breaks the compatibility");
+#endif
+
 struct ceph_osd_reply_head {
 	__le32 client_inc;                /* client incarnation */
 	__le32 flags;