From: Venky Shankar <vshankar@redhat.com>
Date: Wed, 26 Aug 2020 12:56:34 +0000 (-0400)
Subject: client: changes for ceph.mirror.info xattr
X-Git-Tag: v16.1.0~827^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=23a3f86598ff9b1ec6027bd75d89190f561d3905;p=ceph.git

client: changes for ceph.mirror.info xattr

Leverage the vxattr helper to handle this xattr request.

Signed-off-by: Venky Shankar <vshankar@redhat.com>
---

diff --git a/src/client/Client.cc b/src/client/Client.cc
index 7fcc41933c3..123457ea5c7 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -12266,6 +12266,21 @@ size_t Client::_vxattrcb_snap_btime(Inode *in, char *val, size_t size)
       (long unsigned)in->snap_btime.nsec());
 }
 
+bool Client::_vxattrcb_mirror_info_exists(Inode *in)
+{
+  // checking one of the xattrs would suffice
+  return in->xattrs.count("ceph.mirror.info.cluster_id") != 0;
+}
+
+size_t Client::_vxattrcb_mirror_info(Inode *in, char *val, size_t size)
+{
+  return snprintf(val, size, "cluster_id=%.*s fs_id=%.*s",
+                  in->xattrs["ceph.mirror.info.cluster_id"].length(),
+                  in->xattrs["ceph.mirror.info.cluster_id"].c_str(),
+                  in->xattrs["ceph.mirror.info.fs_id"].length(),
+                  in->xattrs["ceph.mirror.info.fs_id"].c_str());
+}
+
 #define CEPH_XATTR_NAME(_type, _name) "ceph." #_type "." #_name
 #define CEPH_XATTR_NAME2(_type, _name, _name2) "ceph." #_type "." #_name "." #_name2
 
@@ -12347,6 +12362,13 @@ const Client::VXattr Client::_dir_vxattrs[] = {
     exists_cb: &Client::_vxattrcb_snap_btime_exists,
     flags: 0,
   },
+  {
+    name: "ceph.mirror.info",
+    getxattr_cb: &Client::_vxattrcb_mirror_info,
+    readonly: false,
+    exists_cb: &Client::_vxattrcb_mirror_info_exists,
+    flags: 0,
+  },
   { name: "" }     /* Required table terminator */
 };
 
diff --git a/src/client/Client.h b/src/client/Client.h
index 73b287cddd9..9c9711dc212 100644
--- a/src/client/Client.h
+++ b/src/client/Client.h
@@ -1294,6 +1294,9 @@ private:
   bool _vxattrcb_snap_btime_exists(Inode *in);
   size_t _vxattrcb_snap_btime(Inode *in, char *val, size_t size);
 
+  bool _vxattrcb_mirror_info_exists(Inode *in);
+  size_t _vxattrcb_mirror_info(Inode *in, char *val, size_t size);
+
   static const VXattr *_get_vxattrs(Inode *in);
   static const VXattr *_match_vxattr(Inode *in, const char *name);