ipc: Retry receiving credentials if the the message is short

see rhbz#2111711

connretry-recv.patch

@@ -0,0 +1,46 @@
+commit 5594d377ac73d37c06bbad1798e87a65f9a12e07
+Author: Chrissie Caulfield <ccaulfie@redhat.com>
+Date:   Fri Nov 25 07:38:20 2022 +0000
+
+    ipc: Retry receiving credentials if the the message is short (#476)
+    
+    ipc: Retry receiving credentials if the the message is short
+    
+    rhbz#2111711 refers
+
+diff --git a/lib/ipc_setup.c b/lib/ipc_setup.c
+index 0ef9bb6..0de7115 100644
+--- a/lib/ipc_setup.c
++++ b/lib/ipc_setup.c
+@@ -473,11 +473,15 @@ qb_ipcc_us_setup_connect(struct qb_ipcc_connection *c,
+ 	return 0;
+ }
+ 
++#define AUTH_RECV_MAX_RETRIES 10
++#define AUTH_RECV_SLEEP_TIME_US 100
++
+ /* Called from ipcc_connect_continue() when async connect socket is active */
+ int qb_ipcc_setup_connect_continue(struct qb_ipcc_connection *c, struct qb_ipc_connection_response *r)
+ {
+ 	struct ipc_auth_data *data;
+ 	int32_t res;
++	int retry_count = 0;
+ #ifdef QB_LINUX
+ 	int off = 0;
+ #endif
+@@ -486,8 +490,14 @@ int qb_ipcc_setup_connect_continue(struct qb_ipcc_connection *c, struct qb_ipc_c
+ 		qb_ipcc_us_sock_close(c->setup.u.us.sock);
+ 		return -ENOMEM;
+ 	}
+-
++retry:
+ 	res = qb_ipc_us_recv_msghdr(data);
++	if (res == -EAGAIN && ++retry_count < AUTH_RECV_MAX_RETRIES) {
++		struct timespec ts = {0,  AUTH_RECV_SLEEP_TIME_US*QB_TIME_NS_IN_USEC};
++		struct timespec ts_left = {0, 0};
++		nanosleep(&ts, &ts_left);
++		goto retry;
++	}
+ 
+ #ifdef QB_LINUX
+ 	setsockopt(c->setup.u.us.sock, SOL_SOCKET, SO_PASSCRED, &off,

libqb.spec

@@ -2,14 +2,14 @@
 
 Name:           libqb
 Version:        2.0.6
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Library providing high performance logging, tracing, ipc, and poll
 
 License:        LGPLv2+
 URL:            https://github.com/ClusterLabs/libqb
 Source0:        https://github.com/ClusterLabs/libqb/releases/download/v%{version}/%{name}-%{version}.tar.xz
 
-#Patch0: sock-test-rootonly.patch
+Patch0: connretry-recv.patch
 
 BuildRequires:  autoconf automake libtool
 BuildRequires:  check-devel
@@ -31,7 +31,7 @@ and polling.
 
 %prep
 %setup -q -n %{name}-%{version}
-#%patch0 -p1 -b .sock-test-rootonly
+%patch0 -p1 -b .connretry-recv.patch
 
 %build
 ./autogen.sh
@@ -87,6 +87,9 @@ This package contains a program to create nicely-formatted man pages from Doxyge
 
 
 %changelog
+* Fri Dec 02 2022 Christine Caulfield <ccaulfie@redhat.com> 2.0.6-4
+  ipc: Retry receiving credentials if the the message is short
+
 * Wed Aug 03 2022 Christine Caulfield <ccaulfie@redhat.com> 2.0.6-3
   Don't run tests on Fedora. We have a local CI and it just loads
   up the Fedora build system (and occasionally fails for loading reasons)