[Qemu-devel] [PATCH] Allow users to specify the vmdk virtual hardware version.

[Janne Karhunen <Janne.Karhunen@gmail.com>]

From: Janne Karhunen <janne.karhunen@gmail.com>

Replace hardcoded vmdk description file hardware version flag with
a user definable version.

Signed-off-by: Janne Karhunen <Janne.Karhunen@gmail.com>
---
 block/vmdk.c              | 20 ++++++++++----------
 include/block/block_int.h |  3 +--
 qemu-doc.texi             |  4 ++--
 3 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/block/vmdk.c b/block/vmdk.c
index 45f9d3c..1436785 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1829,8 +1829,8 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
     int64_t total_size = 0, filesize;
     char *adapter_type = NULL;
     char *backing_file = NULL;
+    char *hw_version = NULL;
     char *fmt = NULL;
-    int flags = 0;
     int ret = 0;
     bool flat, split, compress;
     GString *ext_desc_lines;
@@ -1861,7 +1861,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
         "# The Disk Data Base\n"
         "#DDB\n"
         "\n"
-        "ddb.virtualHWVersion = \"%d\"\n"
+        "ddb.virtualHWVersion = \"%s\"\n"
         "ddb.geometry.cylinders = \"%" PRId64 "\"\n"
         "ddb.geometry.heads = \"%" PRIu32 "\"\n"
         "ddb.geometry.sectors = \"63\"\n"
@@ -1878,9 +1878,8 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
                           BDRV_SECTOR_SIZE);
     adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE);
     backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE);
-    if (qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false)) {
-        flags |= BLOCK_FLAG_COMPAT6;
-    }
+    hw_version = qemu_opt_get_del(opts, BLOCK_OPT_HWVERSION);
+
     fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT);
     if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false)) {
         zeroed_grain = true;
@@ -2001,7 +2000,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
                            fmt,
                            parent_desc_line,
                            ext_desc_lines->str,
-                           (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4),
+                           hw_version,
                            total_size /
                                (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE),
                            number_heads,
@@ -2047,6 +2046,7 @@ exit:
     }
     g_free(adapter_type);
     g_free(backing_file);
+    g_free(hw_version);
     g_free(fmt);
     g_free(desc);
     g_free(path);
@@ -2292,10 +2292,10 @@ static QemuOptsList vmdk_create_opts = {
             .help = "File name of a base image"
         },
         {
-            .name = BLOCK_OPT_COMPAT6,
-            .type = QEMU_OPT_BOOL,
-            .help = "VMDK version 6 image",
-            .def_value_str = "off"
+            .name = BLOCK_OPT_HWVERSION,
+            .type = QEMU_OPT_STRING,
+            .help = "VMDK hardware version",
+            .def_value_str = "4"
         },
         {
             .name = BLOCK_OPT_SUBFMT,
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 10d8759..0852316 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -38,12 +38,11 @@
 #include "qemu/throttle.h"
 
 #define BLOCK_FLAG_ENCRYPT          1
-#define BLOCK_FLAG_COMPAT6          4
 #define BLOCK_FLAG_LAZY_REFCOUNTS   8
 
 #define BLOCK_OPT_SIZE              "size"
 #define BLOCK_OPT_ENCRYPT           "encryption"
-#define BLOCK_OPT_COMPAT6           "compat6"
+#define BLOCK_OPT_HWVERSION         "hwversion"
 #define BLOCK_OPT_BACKING_FILE      "backing_file"
 #define BLOCK_OPT_BACKING_FMT       "backing_fmt"
 #define BLOCK_OPT_CLUSTER_SIZE      "cluster_size"
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 79141d3..79f4168 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -691,8 +691,8 @@ Supported options:
 @table @code
 @item backing_file
 File name of a base image (see @option{create} subcommand).
-@item compat6
-Create a VMDK version 6 image (instead of version 4)
+@item hwversion
+Specify vmdk hardware version (default 4)
 @item subformat
 Specifies which VMDK subformat to use. Valid options are
 @code{monolithicSparse} (default),
-- 
1.9.1