Add missing rwlock_unlocks in xprt_register (bz 1278149)

Signed-off-by: Steve Dickson <steved@redhat.com>

libtirpc-1.0.1-rwlock_unlocks.patch

@@ -0,0 +1,54 @@
+Add missing rwlock_unlocks in xprt_register
+
+It looks like in b2c9430f46c4ac848957fb8adaac176a3f6ac03f when svc_run
+switched to poll, an early return was added, but the rwlock was not
+unlocked.
+
+I observed that rpcbind built against libtirpc-1.0.1 would handle only
+one request before hanging, and tracked it down to a missing
+rwlock_unlock here.
+
+Fixes: b2c9430f46c4 ('Use poll() instead of select() in svc_run()')
+Signed-off-by: Michael Forney <mforney@mforney.org>
+---
+ src/svc.c | 7 ++++---
+ 1 file changed, 4 insertions(+), 3 deletions(-)
+
+diff --git a/src/svc.c b/src/svc.c
+index 9c41445..82a9a6c 100644
+--- a/src/svc.c
++++ b/src/svc.c
+@@ -99,7 +99,7 @@ xprt_register (xprt)
+     {
+       __svc_xports = (SVCXPRT **) calloc (_rpc_dtablesize(), sizeof (SVCXPRT *));
+       if (__svc_xports == NULL)
+-	return;
++	goto unlock;
+     }
+   if (sock < _rpc_dtablesize())
+     {
+@@ -120,14 +120,14 @@ xprt_register (xprt)
+             svc_pollfd[i].fd = sock;
+             svc_pollfd[i].events = (POLLIN | POLLPRI |
+                                     POLLRDNORM | POLLRDBAND);
+-            return;
++            goto unlock;
+           }
+ 
+       new_svc_pollfd = (struct pollfd *) realloc (svc_pollfd,
+                                                   sizeof (struct pollfd)
+                                                   * (svc_max_pollfd + 1));
+       if (new_svc_pollfd == NULL) /* Out of memory */
+-        return;
++        goto unlock;
+       svc_pollfd = new_svc_pollfd;
+       ++svc_max_pollfd;
+ 
+@@ -135,6 +135,7 @@ xprt_register (xprt)
+       svc_pollfd[svc_max_pollfd - 1].events = (POLLIN | POLLPRI |
+                                                POLLRDNORM | POLLRDBAND);
+     }
++unlock:
+   rwlock_unlock (&svc_fd_lock);
+ }
+ 

libtirpc.spec

@@ -2,7 +2,7 @@
 
 Name:			libtirpc
 Version:		1.0.1
-Release:		0.0%{?dist}
+Release:		1%{?dist}
 Summary:		Transport Independent RPC Library
 Group:		  	System Environment/Libraries
 License:		SISSL and BSD
@@ -10,6 +10,8 @@ URL:  			http://nfsv4.bullopensource.org/
 BuildRoot:		%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Source0:		http://downloads.sourceforge.net/libtirpc/libtirpc-%{version}.tar.bz2
 
+Patch001: libtirpc-1.0.1-rwlock_unlocks.patch
+
 BuildRequires:		automake, autoconf, libtool, pkgconfig
 BuildRequires:		krb5-devel
 
@@ -39,6 +41,8 @@ developing programs which use the tirpc library.
 %prep
 %setup -q
 
+%patch001 -p1
+
 # Remove .orig files
 find . -name "*.orig" | xargs rm -f
 
@@ -131,6 +135,9 @@ rm -rf %{buildroot}
 %{_mandir}/*/*
 
 %changelog
+* Wed Nov  4 2015 Steve Dickson <steved@redhat.com> 1.0.1-1
+- Add missing rwlock_unlocks in xprt_register (bz 1278149)
+
 * Fri Oct 30 2015 Steve Dickson <steved@redhat.com> 1.0.1-0.1
 - Updated to latest upstream release: libtirpc-1-0-1