From 428d437b432a3ac68f5b63b921ec519d58b6cf35 Mon Sep 17 00:00:00 2001
From: Xiubo Li <xiubli@redhat.com>
Date: Mon, 5 Dec 2022 15:49:26 +0800
Subject: [PATCH] mds: send the cap_auths to clients when openning the sessions

Fixes: https://tracker.ceph.com/issues/57154
Signed-off-by: Xiubo Li <xiubli@redhat.com>
(cherry picked from commit c1cbb9acadc311f155b176d6108975835a616a5f)

Conflicts:
	src/mds/MDSAuthCaps.h: missed dependency commit 23f1fdbcb3d
	("AuthMonitor: allow "fs authorize" to update caps")
---
 src/mds/MDSAuthCaps.h | 9 +++++++++
 src/mds/Server.cc     | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/src/mds/MDSAuthCaps.h b/src/mds/MDSAuthCaps.h
index 16282bca9b8..5f3787f9afa 100644
--- a/src/mds/MDSAuthCaps.h
+++ b/src/mds/MDSAuthCaps.h
@@ -276,6 +276,15 @@ public:
     return false;
   }
 
+  void get_cap_auths(std::vector<MDSCapAuth> *cap_auths)
+  {
+    for (const auto& grant : grants) {
+      cap_auths->emplace_back(MDSCapAuth(grant.match,
+                                grant.spec.allow_read(),
+                                grant.spec.allow_write()));
+    }
+  }
+
   friend std::ostream &operator<<(std::ostream &out, const MDSAuthCaps &cap);
 private:
   std::vector<MDSCapGrant> grants;
diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index efc6f9eaa96..b34634bba71 100644
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -623,6 +623,7 @@ void Server::handle_client_session(const cref_t<MClientSession> &m)
                                                     session->get_push_seq());
           if (session->info.has_feature(CEPHFS_FEATURE_MIMIC))
             reply->supported_features = supported_features;
+          session->auth_caps.get_cap_auths(&reply->cap_auths);
           mds->send_message_client(reply, session);
           if (mdcache->is_readonly()) {
             auto m = make_message<MClientSession>(CEPH_SESSION_FORCE_RO);
@@ -913,6 +914,7 @@ void Server::_session_logged(Session *session, uint64_t state_seq, bool open, ve
       reply->supported_features = supported_features;
       reply->metric_spec = supported_metric_spec;
     }
+    session->auth_caps.get_cap_auths(&reply->cap_auths);
     mds->send_message_client(reply, session);
     if (mdcache->is_readonly()) {
       auto m = make_message<MClientSession>(CEPH_SESSION_FORCE_RO);
@@ -1069,6 +1071,7 @@ void Server::finish_force_open_sessions(const map<client_t,pair<Session*,uint64_
 	  reply->supported_features = supported_features;
           reply->metric_spec = supported_metric_spec;
 	}
+	session->auth_caps.get_cap_auths(&reply->cap_auths);
 	mds->send_message_client(reply, session);
 
 	if (mdcache->is_readonly())
@@ -1585,6 +1588,7 @@ void Server::handle_client_reconnect(const cref_t<MClientReconnect> &m)
       reply->supported_features = supported_features;
       reply->metric_spec = supported_metric_spec;
     }
+    session->auth_caps.get_cap_auths(&reply->cap_auths);
     mds->send_message_client(reply, session);
     mds->clog->debug() << "reconnect by " << session->info.inst << " after " << delay;
   }
-- 
2.39.5