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Date:      Fri, 22 Sep 2017 08:13:10 +0000 (UTC)
From:      Andriy Gapon <avg@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org
Subject:   svn commit: r323911 - vendor/illumos/dist/lib/libzfs/common
Message-ID:  <201709220813.v8M8DAOT021679@repo.freebsd.org>

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Author: avg
Date: Fri Sep 22 08:13:09 2017
New Revision: 323911
URL: https://svnweb.freebsd.org/changeset/base/323911

Log:
  8502 illumos#7955 broke delegated datasets when libshare is not present
  
  illumos/illumos-gate@1c18e8fbd8db41a9fb39bd3ef7a18ee71ece20da
  https://github.com/illumos/illumos-gate/commit/1c18e8fbd8db41a9fb39bd3ef7a18ee71ece20da
  
  https://www.illumos.org/issues/8502
    The code in lib/libzfs/common/libzfs_mount.c already basically handles
    the case when libshare is not installed. We just need to not fail in
    zfs_init_libshare_impl.  I tested this in lx and things work as
    expected. I also tested there trying to set sharenfs and sharesmb on
    the delegated dataset. Neither is allowed from within a zone.  The
    spew of msgs from a native zone is not ZFS specific. I see the same
    spew simply running the share command.
  
  Reviewed by: Robert Mustacchi <rm@joyent.com>
  Reviewed by: Yuri Pankov <yuripv@gmx.com>
  Approved by: Richard Lowe <richlowe@richlowe.net>
  Author: Jerry Jelinek <jerry.jelinek@joyent.com>

Modified:
  vendor/illumos/dist/lib/libzfs/common/libzfs_mount.c

Modified: vendor/illumos/dist/lib/libzfs/common/libzfs_mount.c
==============================================================================
--- vendor/illumos/dist/lib/libzfs/common/libzfs_mount.c	Fri Sep 22 08:12:08 2017	(r323910)
+++ vendor/illumos/dist/lib/libzfs/common/libzfs_mount.c	Fri Sep 22 08:13:09 2017	(r323911)
@@ -24,6 +24,7 @@
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, 2016 by Delphix. All rights reserved.
  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
+ * Copyright 2017 Joyent, Inc.
  * Copyright 2017 RackTop Systems.
  */
 
@@ -664,8 +665,14 @@ _zfs_init_libshare(void)
 static int
 zfs_init_libshare_impl(libzfs_handle_t *zhandle, int service, void *arg)
 {
+	/*
+	 * libshare is either not installed or we're in a branded zone. The
+	 * rest of the wrapper functions around the libshare calls already
+	 * handle NULL function pointers, but we don't want the callers of
+	 * zfs_init_libshare() to fail prematurely if libshare is not available.
+	 */
 	if (_sa_init == NULL)
-		return (SA_CONFIG_ERR);
+		return (SA_OK);
 
 	/*
 	 * Attempt to refresh libshare. This is necessary if there was a cache



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