From a652c80f142411473d14c038e91c24ba81537f5b Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@ubuntu.com>
Date: Fri, 28 Mar 2014 17:09:48 +0000
Subject: Add ZFS support

Last-Update: 2019-10-11

Patch-Name: zfs.patch
---
 libparted/fs/Makefile.am |  3 +-
 libparted/fs/zfs/zfs.c   | 77 ++++++++++++++++++++++++++++++++++++++++
 libparted/libparted.c    |  4 +++
 3 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 libparted/fs/zfs/zfs.c

diff --git a/libparted/fs/Makefile.am b/libparted/fs/Makefile.am
index 41a60d98..1636d49f 100644
--- a/libparted/fs/Makefile.am
+++ b/libparted/fs/Makefile.am
@@ -52,7 +52,8 @@ libfs_la_SOURCES =		\
   xfs/platform_defs.h		\
   xfs/xfs.c			\
   xfs/xfs_sb.h			\
-  xfs/xfs_types.h
+  xfs/xfs_types.h		\
+  zfs/zfs.c
 
 lib_LTLIBRARIES = libparted-fs-resize.la
 
diff --git a/libparted/fs/zfs/zfs.c b/libparted/fs/zfs/zfs.c
new file mode 100644
index 00000000..47cd6773
--- /dev/null
+++ b/libparted/fs/zfs/zfs.c
@@ -0,0 +1,77 @@
+/*
+    libparted - a library for manipulating disk partitions
+    Copyright (C) 2000, 2007, 2009-2010 Free Software Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <parted/parted.h>
+#include <parted/endian.h>
+
+#if ENABLE_NLS
+#  include <libintl.h>
+#  define _(String) dgettext (PACKAGE, String)
+#else
+#  define _(String) (String)
+#endif /* ENABLE_NLS */
+
+#include <unistd.h>
+
+#define ZFS_SIGNATURE		0x00bab10c
+
+struct zfs_uberblock
+{
+  uint64_t signature;
+  uint64_t version;
+};
+
+static PedGeometry*
+zfs_probe (PedGeometry* geom)
+{
+	struct zfs_uberblock *uber = alloca (geom->dev->sector_size);
+
+	if (!ped_geometry_read (geom, uber, 256, 1))
+		return 0;
+
+	if ((le64toh (uber->signature) == ZFS_SIGNATURE
+		|| be64toh (uber->signature) == ZFS_SIGNATURE)
+		&& uber->version != 0)
+		return ped_geometry_new (geom->dev, geom->start, geom->length);
+	else
+		return NULL;
+}
+
+static PedFileSystemOps zfs_ops = {
+	probe:		zfs_probe,
+};
+
+static PedFileSystemType zfs_type = {
+	next:	NULL,
+	ops:	&zfs_ops,
+	name:	"zfs",
+};
+
+void
+ped_file_system_zfs_init ()
+{
+	ped_file_system_type_register (&zfs_type);
+}
+
+void
+ped_file_system_zfs_done ()
+{
+	ped_file_system_type_unregister (&zfs_type);
+}
diff --git a/libparted/libparted.c b/libparted/libparted.c
index 204ce007..88e7eea2 100644
--- a/libparted/libparted.c
+++ b/libparted/libparted.c
@@ -115,6 +115,7 @@ extern void ped_file_system_ext2_init (void);
 extern void ped_file_system_nilfs2_init (void);
 extern void ped_file_system_btrfs_init (void);
 extern void ped_file_system_udf_init (void);
+extern void ped_file_system_zfs_init (void);
 
 static void
 init_file_system_types ()
@@ -133,6 +134,7 @@ init_file_system_types ()
 	ped_file_system_nilfs2_init ();
 	ped_file_system_btrfs_init ();
 	ped_file_system_udf_init ();
+	ped_file_system_zfs_init ();
 }
 
 extern void ped_disk_aix_done ();
@@ -200,10 +202,12 @@ extern void ped_file_system_xfs_done (void);
 extern void ped_file_system_amiga_done (void);
 extern void ped_file_system_btrfs_done (void);
 extern void ped_file_system_udf_done (void);
+extern void ped_file_system_zfs_done (void);
 
 static void
 done_file_system_types ()
 {
+	ped_file_system_zfs_done ();
 	ped_file_system_nilfs2_done ();
 	ped_file_system_ext2_done ();
 	ped_file_system_f2fs_done ();