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[Libguestfs] [PATCH VERSION 4] Generic partition creation interface.



On Thu, Nov 05, 2009 at 01:15:03PM +0000, Richard W.M. Jones wrote:
> After a bit of discussion with Jim Meyering I've decided to withdraw
> this and rewrite it based on libparted.  Using the parted command line
> tool is just too unpredictable.

After going down this rathole I decided maybe that wasn't such a
good plan after all.

The following patch goes back to using the command line interface, but
we have made guestfs_part_disk work for both MBR and GPT formats
(thanks to Jim).

Most of the rest of the patch is concerned with updating documentation
and examples to emphasize using guestfs_part* instead of
guestfs_sfdisk* calls.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://et.redhat.com/~rjones/virt-df/
>From 74914b6fd255d849c8d5caf482e9c727f0a13afd Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones redhat com>
Date: Wed, 4 Nov 2009 23:15:26 +0000
Subject: [PATCH] Generic partition creation interface.

The current sfdisk interface works, but is somewhat limited
since it can only deal with MBR-style partitions.  For disks
larger than 2TB, MBR partitions are unsuitable and we need
to provide access to other partition table types (eg. GPT).

This commit introduces a generic partition creation interface
which should be future-proof and extensible.

The implementation is based on parted.
---
 appliance/packagelist.in                           |    1 +
 daemon/Makefile.am                                 |    1 +
 daemon/parted.c                                    |  210 ++++++++++++++++++++
 guestfish.pod                                      |    2 +-
 guestfs.pod                                        |   28 ++--
 ocaml/t/guestfs_060_readdir.ml                     |    2 +-
 perl/t/060-readdir.t                               |    2 +-
 po/POTFILES.in                                     |    1 +
 recipes/tar2vm.sh                                  |    2 +-
 regressions/rhbz503169c10.sh                       |    2 +-
 regressions/rhbz503169c13.sh                       |    2 +-
 .../test-cancellation-upload-daemoncancels.sh      |    2 +-
 regressions/test-remote.sh                         |    2 +-
 src/MAX_PROC_NR                                    |    2 +-
 src/generator.ml                                   |  169 ++++++++++++++---
 15 files changed, 380 insertions(+), 48 deletions(-)
 create mode 100644 daemon/parted.c

diff --git a/appliance/packagelist.in b/appliance/packagelist.in
index b3609df..4c75f15 100644
--- a/appliance/packagelist.in
+++ b/appliance/packagelist.in
@@ -40,6 +40,7 @@ lvm2
 module-init-tools
 net-tools
 ntfs-3g
+parted
 procps
 strace
 xfsprogs
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index db311ab..72e1896 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -60,6 +60,7 @@ guestfsd_SOURCES = \
 	mount.c \
 	names.c \
 	ntfs.c \
+	parted.c \
 	pingdaemon.c \
 	proto.c \
 	readdir.c \
diff --git a/daemon/parted.c b/daemon/parted.c
new file mode 100644
index 0000000..696243c
--- /dev/null
+++ b/daemon/parted.c
@@ -0,0 +1,210 @@
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2009 Red Hat 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "daemon.h"
+#include "actions.h"
+
+/* XXX parted sends error messages to stdout!!!  This is an upstream
+ * parted bug and I have no intention of fixing it here.
+ */
+
+static const char *
+check_parttype (const char *parttype)
+{
+  /* Check and translate parttype. */
+  if (strcmp (parttype, "aix") == 0 ||
+      strcmp (parttype, "amiga") == 0 ||
+      strcmp (parttype, "bsd") == 0 ||
+      strcmp (parttype, "dasd") == 0 ||
+      strcmp (parttype, "dvh") == 0 ||
+      strcmp (parttype, "gpt") == 0 ||
+      strcmp (parttype, "mac") == 0 ||
+      strcmp (parttype, "msdos") == 0 ||
+      strcmp (parttype, "pc98") == 0 ||
+      strcmp (parttype, "sun") == 0)
+    return parttype;
+  else if (strcmp (parttype, "rdb") == 0)
+    return "amiga";
+  else if (strcmp (parttype, "efi") == 0)
+    return "gpt";
+  else if (strcmp (parttype, "mbr") == 0)
+    return "msdos";
+  else
+    return NULL;
+}
+
+int
+do_part_init (const char *device, const char *parttype)
+{
+  char *err;
+  int r;
+
+  parttype = check_parttype (parttype);
+  if (!parttype) {
+    reply_with_error ("part-init: unknown partition type: common choices are \"gpt\" and \"msdos\"");
+    return -1;
+  }
+
+  r = command (NULL, &err,
+               "/sbin/parted", "-s", "--", device,
+               "mklabel", parttype, NULL);
+  if (r == -1) {
+    reply_with_perror ("part-init: %s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_part_add (const char *device, const char *prlogex,
+             int64_t startsect, int64_t endsect)
+{
+  char *err;
+  int r;
+  char startstr[32];
+  char endstr[32];
+
+  /* Check and translate prlogex. */
+  if (strcmp (prlogex, "primary") == 0 ||
+      strcmp (prlogex, "logical") == 0 ||
+      strcmp (prlogex, "extended") == 0)
+    ;
+  else if (strcmp (prlogex, "p") == 0)
+    prlogex = "primary";
+  else if (strcmp (prlogex, "l") == 0)
+    prlogex = "logical";
+  else if (strcmp (prlogex, "e") == 0)
+    prlogex = "extended";
+  else {
+    reply_with_error ("part-add: unknown partition type: %s: this should be \"primary\", \"logical\" or \"extended\"", prlogex);
+    return -1;
+  }
+
+  if (startsect < 0) {
+    reply_with_error ("part-add: startsect cannot be negative");
+    return -1;
+  }
+  /* but endsect can be negative */
+
+  snprintf (startstr, sizeof startstr, "%" PRIi64 "s", startsect);
+  snprintf (endstr, sizeof endstr, "%" PRIi64 "s", endsect);
+
+  r = command (NULL, &err,
+               "/sbin/parted", "-s", "--", device,
+               "mkpart", prlogex, startstr, endstr, NULL);
+  if (r == -1) {
+    reply_with_error ("part-add: %s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_part_set_bootable (const char *device, int partnum, int bootable)
+{
+  char *err;
+  int r;
+  char partstr[16];
+
+  snprintf (partstr, sizeof partstr, "%d", partnum);
+
+  r = command (NULL, &err,
+               "/sbin/parted", "-s", "--", device,
+               "set", partstr, "boot", bootable ? "on" : "off", NULL);
+  if (r == -1) {
+    reply_with_perror ("part-bootable: %s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_part_disk (const char *device, const char *parttype)
+{
+  char *err;
+  int r;
+  const char *startstr;
+  const char *endstr;
+
+  parttype = check_parttype (parttype);
+  if (!parttype) {
+    reply_with_error ("part-disk: unknown partition type: common choices are \"gpt\" and \"msdos\"");
+    return -1;
+  }
+
+  /* Voooooodooooooooo (thanks Jim Meyering for working this out). */
+  if (strcmp (parttype, "msdos") == 0) {
+    startstr = "1s";
+    endstr = "-1s";
+  } else if (strcmp (parttype, "gpt") == 0) {
+    startstr = "34s";
+    endstr = "-34s";
+  } else {
+    /* untested */
+    startstr = "1s";
+    endstr = "-1s";
+  }
+
+  r = command (NULL, &err,
+               "/sbin/parted", "-s", "--", device,
+               "mklabel", parttype,
+               /* This slightly wrong - in the GPT case it will give
+                * the partition the name "primary".  We have to give
+                * it some name, so this is as good as any.
+                */
+               "mkpart", "primary", startstr, endstr,
+               NULL);
+  if (r == -1) {
+    reply_with_perror ("part-disk: %s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
diff --git a/guestfish.pod b/guestfish.pod
index 8ae1800..2508066 100644
--- a/guestfish.pod
+++ b/guestfish.pod
@@ -63,7 +63,7 @@ Remove C</boot/grub/menu.lst> (in reality not such a great idea):
  #!/usr/bin/guestfish -f
  alloc /tmp/output.img 10M
  run
- sfdisk /dev/sda 0 0 0 ,
+ part-disk /dev/sda mbr
  mkfs ext2 /dev/sda1
 
 =head2 Remote control
diff --git a/guestfs.pod b/guestfs.pod
index 33b84d7..fdac80a 100644
--- a/guestfs.pod
+++ b/guestfs.pod
@@ -217,29 +217,27 @@ L<http://tldp.org/HOWTO/LVM-HOWTO/>.
 
 =head2 PARTITIONING
 
-To create MBR-style (ie. normal PC) partitions use one of the
-C<guestfs_sfdisk*> variants.  These calls use the external
-L<sfdisk(8)> command.
+In the common case where you want to create a single partition
+covering the whole disk, you should use the C<guestfs_part_disk>
+call:
 
-The simplest call is:
-
- char *lines[] = { ",", NULL };
- guestfs_sfdiskM (g, "/dev/sda", lines);
-
-This will create a single partition on C</dev/sda> called
-C</dev/sda1> covering the whole disk.
+ const char *parttype = "mbr";
+ if (disk_is_larger_than_2TB)
+   parttype = "gpt";
+ guestfs_part_disk (g, "/dev/sda", parttype);
 
 In general MBR partitions are both unnecessarily complicated and
 depend on archaic details, namely the Cylinder-Head-Sector (CHS)
-geometry of the disk.  C<guestfs_sfdiskM> allows you to specify sizes
-in megabytes instead of cylinders, which is a small win.
+geometry of the disk.  C<guestfs_sfdiskM> can be used to
+create more complex arrangements where the relative sizes are
+expressed in megabytes instead of cylinders, which is a small win.
 C<guestfs_sfdiskM> will choose the nearest cylinder to approximate the
 requested size.  There's a lot of crazy stuff to do with IDE and
 virtio disks having different, incompatible CHS geometries, that you
-probably don't want to know about.  My advice: make a single partition
-to cover the whole disk, then use LVM on top.
+probably don't want to know about.
 
-In future we aim to provide access to libparted.
+My advice: make a single partition to cover the whole disk, then use
+LVM on top.
 
 =head2 UPLOADING
 
diff --git a/ocaml/t/guestfs_060_readdir.ml b/ocaml/t/guestfs_060_readdir.ml
index 8035a09..f560700 100644
--- a/ocaml/t/guestfs_060_readdir.ml
+++ b/ocaml/t/guestfs_060_readdir.ml
@@ -28,7 +28,7 @@ let () =
   Guestfs.add_drive g "test.img";
   Guestfs.launch g;
 
-  Guestfs.sfdisk g "/dev/sda" 0 0 0 [|","|];
+  Guestfs.part_disk g "/dev/sda" "mbr";
   Guestfs.mkfs g "ext2" "/dev/sda1";
   Guestfs.mount g "/dev/sda1" "/";
   Guestfs.mkdir g "/p";
diff --git a/perl/t/060-readdir.t b/perl/t/060-readdir.t
index 898b44f..5ed5b7a 100644
--- a/perl/t/060-readdir.t
+++ b/perl/t/060-readdir.t
@@ -34,7 +34,7 @@ ok (1);
 $h->launch ();
 ok (1);
 
-$h->sfdisk ("/dev/sda", 0, 0, 0, [","]);
+$h->part_disk ("/dev/sda", "mbr");
 ok (1);
 $h->mkfs ("ext2", "/dev/sda1");
 ok (1);
diff --git a/po/POTFILES.in b/po/POTFILES.in
index d7d12f7..a125f2a 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -35,6 +35,7 @@ daemon/modprobe.c
 daemon/mount.c
 daemon/names.c
 daemon/ntfs.c
+daemon/parted.c
 daemon/pingdaemon.c
 daemon/proto.c
 daemon/readdir.c
diff --git a/recipes/tar2vm.sh b/recipes/tar2vm.sh
index d71a5ef..713e9e3 100755
--- a/recipes/tar2vm.sh
+++ b/recipes/tar2vm.sh
@@ -3,7 +3,7 @@
 guestfish <<EOF
 alloc $2 $3
 run
-sfdisk /dev/sda 0 0 0 ,
+part-disk /dev/sda mbr
 mkfs ext3 /dev/sda1
 mount /dev/sda1 /
 tgz-in $1 /
diff --git a/regressions/rhbz503169c10.sh b/regressions/rhbz503169c10.sh
index 91284e0..5cf7069 100755
--- a/regressions/rhbz503169c10.sh
+++ b/regressions/rhbz503169c10.sh
@@ -26,7 +26,7 @@ dd if=/dev/zero of=test1.img bs=1024k count=10
 
 ../fish/guestfish -a test1.img <<EOF
 launch
-sfdisk /dev/sda 0 0 0 ,
+part-disk /dev/sda mbr
 mkfs ext2 /dev/sda1
 mount /dev/sda1 /
 ll /../dev/console
diff --git a/regressions/rhbz503169c13.sh b/regressions/rhbz503169c13.sh
index 7bace82..d360d5c 100755
--- a/regressions/rhbz503169c13.sh
+++ b/regressions/rhbz503169c13.sh
@@ -31,7 +31,7 @@ dd if=/dev/zero of=test1.img bs=1024k count=10
 
 ../fish/guestfish -a test1.img <<EOF
 run
-sfdisk /dev/sda 0 0 0 ,
+part-disk /dev/sda mbr
 mkfs ext2 /dev/sda1
 mount /dev/sda1 /
 mkdir /dev
diff --git a/regressions/test-cancellation-upload-daemoncancels.sh b/regressions/test-cancellation-upload-daemoncancels.sh
index 835c3bb..296d368 100755
--- a/regressions/test-cancellation-upload-daemoncancels.sh
+++ b/regressions/test-cancellation-upload-daemoncancels.sh
@@ -28,7 +28,7 @@ rm -f test.img
 alloc test.img 10M
 run
 
-sfdiskM /dev/sda ,
+part-disk /dev/sda mbr
 mkfs ext2 /dev/sda1
 mount /dev/sda1 /
 
diff --git a/regressions/test-remote.sh b/regressions/test-remote.sh
index ed02ccf..d778a07 100755
--- a/regressions/test-remote.sh
+++ b/regressions/test-remote.sh
@@ -26,7 +26,7 @@ eval `../fish/guestfish --listen`
 
 ../fish/guestfish --remote alloc test.img 10M
 ../fish/guestfish --remote run
-../fish/guestfish --remote sfdiskM /dev/sda ,
+../fish/guestfish --remote part-disk /dev/sda mbr
 ../fish/guestfish --remote mkfs ext2 /dev/sda1
 ../fish/guestfish --remote mount /dev/sda1 /
 
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index c92ba56..dba40af 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-207
+211
diff --git a/src/generator.ml b/src/generator.ml
index a06e208..3ed46d4 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -870,7 +870,7 @@ Return the recovery process enabled flag.");
 let daemon_functions = [
   ("mount", (RErr, [Device "device"; String "mountpoint"]), 1, [],
    [InitEmpty, Always, TestOutput (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext2"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["write_file"; "/new"; "new file contents"; "0"];
@@ -1414,7 +1414,7 @@ on the volume group C<volgroup>, with C<size> megabytes.");
 
   ("mkfs", (RErr, [String "fstype"; Device "device"]), 42, [],
    [InitEmpty, Always, TestOutput (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext2"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["write_file"; "/new"; "new file contents"; "0"];
@@ -1489,12 +1489,12 @@ use C<guestfs_upload>.");
 
   ("umount", (RErr, [String "pathordevice"]), 45, [FishAlias "unmount"],
    [InitEmpty, Always, TestOutputListOfDevices (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext2"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["mounts"]], ["/dev/sda1"]);
     InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext2"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["umount"; "/"];
@@ -2034,7 +2034,7 @@ to find out what you can do.");
 
   ("lvremove", (RErr, [Device "device"]), 77, [],
    [InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2042,7 +2042,7 @@ to find out what you can do.");
        ["lvremove"; "/dev/VG/LV1"];
        ["lvs"]], ["/dev/VG/LV2"]);
     InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2050,7 +2050,7 @@ to find out what you can do.");
        ["lvremove"; "/dev/VG"];
        ["lvs"]], []);
     InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2067,7 +2067,7 @@ the VG name, C</dev/VG>.");
 
   ("vgremove", (RErr, [String "vgname"]), 78, [],
    [InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2075,7 +2075,7 @@ the VG name, C</dev/VG>.");
        ["vgremove"; "VG"];
        ["lvs"]], []);
     InitEmpty, Always, TestOutputList (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2091,7 +2091,7 @@ group (if any).");
 
   ("pvremove", (RErr, [Device "device"]), 79, [],
    [InitEmpty, Always, TestOutputListOfDevices (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2100,7 +2100,7 @@ group (if any).");
        ["pvremove"; "/dev/sda1"];
        ["lvs"]], []);
     InitEmpty, Always, TestOutputListOfDevices (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2109,7 +2109,7 @@ group (if any).");
        ["pvremove"; "/dev/sda1"];
        ["vgs"]], []);
     InitEmpty, Always, TestOutputListOfDevices (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV1"; "VG"; "50"];
@@ -2386,7 +2386,7 @@ the human-readable, canonical hex dump of the file.");
 
   ("zerofree", (RErr, [Device "device"]), 97, [],
    [InitNone, Always, TestOutput (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext3"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["write_file"; "/new"; "test file"; "0"];
@@ -2484,7 +2484,7 @@ are activated or deactivated.");
 
   ("lvresize", (RErr, [Device "device"; Int "mbytes"]), 105, [],
    [InitNone, Always, TestOutput (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["pvcreate"; "/dev/sda1"];
        ["vgcreate"; "VG"; "/dev/sda1"];
        ["lvcreate"; "LV"; "VG"; "10"];
@@ -2577,11 +2577,11 @@ Sleep for C<secs> seconds.");
 
   ("ntfs_3g_probe", (RInt "status", [Bool "rw"; Device "device"]), 110, [],
    [InitNone, Always, TestOutputInt (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ntfs"; "/dev/sda1"];
        ["ntfs_3g_probe"; "true"; "/dev/sda1"]], 0);
     InitNone, Always, TestOutputInt (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs"; "ext2"; "/dev/sda1"];
        ["ntfs_3g_probe"; "true"; "/dev/sda1"]], 12)],
    "probe NTFS volume",
@@ -2859,7 +2859,7 @@ the command C<mount -o loop file mountpoint>.");
 
   ("mkswap", (RErr, [Device "device"]), 130, [],
    [InitEmpty, Always, TestRun (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkswap"; "/dev/sda1"]])],
    "create a swap partition",
    "\
@@ -2867,7 +2867,7 @@ Create a swap partition on C<device>.");
 
   ("mkswap_L", (RErr, [String "label"; Device "device"]), 131, [],
    [InitEmpty, Always, TestRun (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkswap_L"; "hello"; "/dev/sda1"]])],
    "create a swap partition with a label",
    "\
@@ -2880,7 +2880,7 @@ a limitation of the kernel or swap tools.");
   ("mkswap_U", (RErr, [String "uuid"; Device "device"]), 132, [],
    (let uuid = uuidgen () in
     [InitEmpty, Always, TestRun (
-       [["sfdiskM"; "/dev/sda"; ","];
+       [["part_disk"; "/dev/sda"; "mbr"];
         ["mkswap_U"; uuid; "/dev/sda1"]])]),
    "create a swap partition with an explicit UUID",
    "\
@@ -3371,7 +3371,7 @@ This command disables the libguestfs appliance swap on file.");
 
   ("swapon_label", (RErr, [String "label"]), 174, [],
    [InitEmpty, Always, TestRun (
-      [["sfdiskM"; "/dev/sdb"; ","];
+      [["part_disk"; "/dev/sdb"; "mbr"];
        ["mkswap_L"; "swapit"; "/dev/sdb1"];
        ["swapon_label"; "swapit"];
        ["swapoff_label"; "swapit"];
@@ -3536,7 +3536,7 @@ and C<guestfs_setcon>");
 
   ("mkfs_b", (RErr, [String "fstype"; Int "blocksize"; Device "device"]), 187, [],
    [InitEmpty, Always, TestOutput (
-      [["sfdiskM"; "/dev/sda"; ","];
+      [["part_disk"; "/dev/sda"; "mbr"];
        ["mkfs_b"; "ext2"; "4096"; "/dev/sda1"];
        ["mount"; "/dev/sda1"; "/"];
        ["write_file"; "/new"; "new file contents"; "0"];
@@ -3893,6 +3893,127 @@ bytes of the file, starting at C<offset>, from file C<path>.
 This may read fewer bytes than requested.  For further details
 see the L<pread(2)> system call.");
 
+  ("part_init", (RErr, [Device "device"; String "parttype"]), 208, [],
+   [InitEmpty, Always, TestRun (
+      [["part_init"; "/dev/sda"; "gpt"]])],
+   "create an empty partition table",
+   "\
+This creates an empty partition table on C<device> of one of the
+partition types listed below.  Usually C<parttype> should be
+either C<msdos> or C<gpt> (for large disks).
+
+Initially there are no partitions.  Following this, you should
+call C<guestfs_part_add> for each partition required.
+
+Possible values for C<parttype> are:
+
+=over 4
+
+=item B<efi> | B<gpt>
+
+Intel EFI / GPT partition table.
+
+This is recommended for >= 2 TB partitions that will be accessed
+from Linux and Intel-based Mac OS X.  It also has limited backwards
+compatibility with the C<mbr> format.
+
+=item B<mbr> | B<msdos>
+
+The standard PC \"Master Boot Record\" (MBR) format used
+by MS-DOS and Windows.  This partition type will B<only> work
+for device sizes up to 2 TB.  For large disks we recommend
+using C<gpt>.
+
+=back
+
+Other partition table types that may work but are not
+supported include:
+
+=over 4
+
+=item B<aix>
+
+AIX disk labels.
+
+=item B<amiga> | B<rdb>
+
+Amiga \"Rigid Disk Block\" format.
+
+=item B<bsd>
+
+BSD disk labels.
+
+=item B<dasd>
+
+DASD, used on IBM mainframes.
+
+=item B<dvh>
+
+MIPS/SGI volumes.
+
+=item B<mac>
+
+Old Mac partition format.  Modern Macs use C<gpt>.
+
+=item B<pc98>
+
+NEC PC-98 format, common in Japan apparently.
+
+=item B<sun>
+
+Sun disk labels.
+
+=back");
+
+  ("part_add", (RErr, [Device "device"; String "prlogex"; Int64 "startsect"; Int64 "endsect"]), 209, [],
+   [InitEmpty, Always, TestRun (
+      [["part_init"; "/dev/sda"; "mbr"];
+       ["part_add"; "/dev/sda"; "primary"; "1"; "-1"]])],
+   "add a partition to the device",
+   "\
+This command adds a partition to C<device>.  If there is no partition
+table on the device, call C<guestfs_part_init> first.
+
+The C<prlogex> parameter is the type of partition.  Normally you
+should pass C<p> or C<primary> here, but MBR partition tables also
+support C<l> (or C<logical>) and C<e> (or C<extended>) partition
+types.
+
+C<startsect> and C<endsect> are the start and end of the partition
+in I<sectors>.  C<endsect> may be negative, which means it counts
+backwards from the end of the disk (C<-1> is the last sector).
+
+Creating a partition which covers the whole disk is not so easy.
+Use C<guestfs_part_disk> to do that.");
+
+  ("part_set_bootable", (RErr, [Device "device"; Int "partnum"; Bool "bootable"]), 210, [],
+   [InitEmpty, Always, TestRun (
+      [["part_disk"; "/dev/sda"; "mbr"];
+       ["part_set_bootable"; "/dev/sda"; "1"; "true"]])],
+   "make a partition bootable",
+   "\
+This sets the bootable flag on partition numbered C<partnum> on
+device C<device>.  Note that partitions are numbered from 1.
+
+The bootable flag is used by some PC BIOSes to determine which
+partition to boot from.  It is by no means universally recognized,
+and in any case if your operating system installed a boot
+sector on the device itself, then that takes precedence.");
+
+  ("part_disk", (RErr, [Device "device"; String "parttype"]), 211, [],
+   [InitEmpty, Always, TestRun (
+      [["part_disk"; "/dev/sda"; "mbr"]]);
+    InitEmpty, Always, TestRun (
+      [["part_disk"; "/dev/sda"; "gpt"]])],
+   "partition whole disk with a single primary partition",
+   "\
+This command is simply a combination of C<guestfs_part_init>
+followed by C<guestfs_part_add> to create a single primary partition
+covering the whole disk.
+
+C<parttype> is the partition table type, usually C<mbr> or C<gpt>,
+but other possible values are described in C<guestfs_part_init>.");
+
 ]
 
 let all_functions = non_daemon_functions @ daemon_functions
@@ -5951,14 +6072,14 @@ and generate_one_test_body name i test_name init test =
          [["blockdev_setrw"; "/dev/sda"];
           ["umount_all"];
           ["lvm_remove_all"];
-          ["sfdiskM"; "/dev/sda"; ","]]
+          ["part_disk"; "/dev/sda"; "mbr"]]
    | InitBasicFS ->
        pr "  /* InitBasicFS for %s: create ext2 on /dev/sda1 */\n" test_name;
        List.iter (generate_test_command_call test_name)
          [["blockdev_setrw"; "/dev/sda"];
           ["umount_all"];
           ["lvm_remove_all"];
-          ["sfdiskM"; "/dev/sda"; ","];
+          ["part_disk"; "/dev/sda"; "mbr"];
           ["mkfs"; "ext2"; "/dev/sda1"];
           ["mount"; "/dev/sda1"; "/"]]
    | InitBasicFSonLVM ->
@@ -5968,7 +6089,7 @@ and generate_one_test_body name i test_name init test =
          [["blockdev_setrw"; "/dev/sda"];
           ["umount_all"];
           ["lvm_remove_all"];
-          ["sfdiskM"; "/dev/sda"; ","];
+          ["part_disk"; "/dev/sda"; "mbr"];
           ["pvcreate"; "/dev/sda1"];
           ["vgcreate"; "VG"; "/dev/sda1"];
           ["lvcreate"; "LV"; "VG"; "8"];
-- 
1.6.5.rc2


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