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* [PATCH v8] Implement backend program convention command for vhost-user-blk
@ 2019-12-09  1:53 Micky Yun Chan(michiboo)
  2019-12-11 15:59 ` Michael S. Tsirkin
  0 siblings, 1 reply; 3+ messages in thread
From: Micky Yun Chan(michiboo) @ 2019-12-09  1:53 UTC (permalink / raw)
  To: qemu-devel; +Cc: Micky Yun Chan, stefanha, Michael S. Tsirkin

From: Micky Yun Chan <chanmickyyun@gmail.com>

This patch is to add standard commands defined in docs/interop/vhost-user.rst
For vhost-user-* program

Signed-off-by: Micky Yun Chan (michiboo) <chanmickyyun@gmail.com>
---
 contrib/vhost-user-blk/vhost-user-blk.c | 108 ++++++++++++++----------
 docs/interop/vhost-user.json            |  31 +++++++
 docs/interop/vhost-user.rst             |  17 ++++
 3 files changed, 112 insertions(+), 44 deletions(-)

diff --git a/contrib/vhost-user-blk/vhost-user-blk.c b/contrib/vhost-user-blk/vhost-user-blk.c
index ae61034656..6fd91c7e99 100644
--- a/contrib/vhost-user-blk/vhost-user-blk.c
+++ b/contrib/vhost-user-blk/vhost-user-blk.c
@@ -576,70 +576,90 @@ vub_new(char *blk_file)
     return vdev_blk;
 }
 
+static int opt_fdnum = -1;
+static char *opt_socket_path;
+static char *opt_blk_file;
+static gboolean opt_print_caps;
+static gboolean opt_read_only;
+
+static GOptionEntry entries[] = {
+    { "print-capabilities", 'c', 0, G_OPTION_ARG_NONE, &opt_print_caps,
+      "Print capabilities", NULL },
+    { "fd", 'f', 0, G_OPTION_ARG_INT, &opt_fdnum,
+      "Use inherited fd socket", "FDNUM" },
+    { "socket-path", 's', 0, G_OPTION_ARG_FILENAME, &opt_socket_path,
+      "Use UNIX socket path", "PATH" },
+    {"blk-file", 'b', 0, G_OPTION_ARG_FILENAME, &opt_blk_file,
+     "block device or file path", "PATH"},
+    { "read-only", 'r', 0, G_OPTION_ARG_NONE, &opt_read_only,
+      "Enable read-only", NULL }
+};
+
 int main(int argc, char **argv)
 {
-    int opt;
-    char *unix_socket = NULL;
-    char *blk_file = NULL;
-    bool enable_ro = false;
     int lsock = -1, csock = -1;
     VubDev *vdev_blk = NULL;
+    GError *error = NULL;
+    GOptionContext *context;
 
-    while ((opt = getopt(argc, argv, "b:rs:h")) != -1) {
-        switch (opt) {
-        case 'b':
-            blk_file = g_strdup(optarg);
-            break;
-        case 's':
-            unix_socket = g_strdup(optarg);
-            break;
-        case 'r':
-            enable_ro = true;
-            break;
-        case 'h':
-        default:
-            printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
-                   " | -r Enable read-only ] | [ -h ]\n", argv[0]);
-            return 0;
+    context = g_option_context_new(NULL);
+    g_option_context_add_main_entries(context, entries, NULL);
+    if (!g_option_context_parse(context, &argc, &argv, &error)) {
+        g_printerr("Option parsing failed: %s\n", error->message);
+        exit(EXIT_FAILURE);
+    }
+    if (opt_print_caps) {
+        g_print("{\n");
+        g_print("  \"type\": \"block\",\n");
+        g_print("  \"features\": [\n");
+        g_print("    \"read-only\",\n");
+        g_print("    \"blk-file\"\n");
+        g_print("  ]\n");
+        g_print("}\n");
+        exit(EXIT_SUCCESS);
+    }
+
+    if (!opt_blk_file) {
+        g_print("%s\n", g_option_context_get_help(context, true, NULL));
+        exit(EXIT_FAILURE);
+    }
+
+    if (opt_socket_path) {
+        lsock = unix_sock_new(opt_socket_path);
+        if (lsock < 0) {
+            exit(EXIT_FAILURE);
         }
+    } else if (opt_fdnum < 0) {
+        g_print("%s\n", g_option_context_get_help(context, true, NULL));
+        exit(EXIT_FAILURE);
+    } else {
+        lsock = opt_fdnum;
     }
 
-    if (!unix_socket || !blk_file) {
-        printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
-               " | -r Enable read-only ] | [ -h ]\n", argv[0]);
-        return -1;
-    }
-
-    lsock = unix_sock_new(unix_socket);
-    if (lsock < 0) {
-        goto err;
-    }
-
-    csock = accept(lsock, (void *)0, (void *)0);
+    csock = accept(lsock, NULL, NULL);
     if (csock < 0) {
-        fprintf(stderr, "Accept error %s\n", strerror(errno));
-        goto err;
+        g_printerr("Accept error %s\n", strerror(errno));
+        exit(EXIT_FAILURE);
     }
 
-    vdev_blk = vub_new(blk_file);
+    vdev_blk = vub_new(opt_blk_file);
     if (!vdev_blk) {
-        goto err;
+        exit(EXIT_FAILURE);
     }
-    if (enable_ro) {
+    if (opt_read_only) {
         vdev_blk->enable_ro = true;
     }
 
     if (!vug_init(&vdev_blk->parent, VHOST_USER_BLK_MAX_QUEUES, csock,
                   vub_panic_cb, &vub_iface)) {
-        fprintf(stderr, "Failed to initialized libvhost-user-glib\n");
-        goto err;
+        g_printerr("Failed to initialize libvhost-user-glib\n");
+        exit(EXIT_FAILURE);
     }
 
     g_main_loop_run(vdev_blk->loop);
-
+    g_main_loop_unref(vdev_blk->loop);
+    g_option_context_free(context);
     vug_deinit(&vdev_blk->parent);
-
-err:
     vub_free(vdev_blk);
     if (csock >= 0) {
         close(csock);
@@ -647,8 +667,8 @@ err:
     if (lsock >= 0) {
         close(lsock);
     }
-    g_free(unix_socket);
-    g_free(blk_file);
+    g_free(opt_socket_path);
+    g_free(opt_blk_file);
 
     return 0;
 }
diff --git a/docs/interop/vhost-user.json b/docs/interop/vhost-user.json
index da6aaf51c8..ce0ef74db5 100644
--- a/docs/interop/vhost-user.json
+++ b/docs/interop/vhost-user.json
@@ -54,6 +54,37 @@
   ]
 }
 
+##
+# @VHostUserBackendBlockFeature:
+#
+# List of vhost user "block" features.
+#
+# @read-only: The --read-only command line option is supported.
+# @blk-file: The --blk-file command line option is supported.
+#
+# Since: 5.0
+##
+{
+  'enum': 'VHostUserBackendBlockFeature',
+  'data': [ 'read-only', 'blk-file' ]
+}
+
+##
+# @VHostUserBackendCapabilitiesBlock:
+#
+# Capabilities reported by vhost user "block" backends
+#
+# @features: list of supported features.
+#
+# Since: 5.0
+##
+{
+  'struct': 'VHostUserBackendCapabilitiesBlock',
+  'data': {
+    'features': [ 'VHostUserBackendBlockFeature' ]
+  }
+}
+
 ##
 # @VHostUserBackendInputFeature:
 #
diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst
index 7827b710aa..015ac08177 100644
--- a/docs/interop/vhost-user.rst
+++ b/docs/interop/vhost-user.rst
@@ -1376,3 +1376,20 @@ Command line options:
   Enable virgl rendering support.
 
   (optional)
+
+vhost-user-blk
+--------------
+
+Command line options:
+
+--blk-file=PATH
+
+  Specify block device or file path.
+
+  (optional)
+
+--read-only
+
+  Enable read-only.
+
+  (optional)
-- 
2.21.0



^ permalink raw reply related	[flat|nested] 3+ messages in thread

* Re: [PATCH v8] Implement backend program convention command for vhost-user-blk
  2019-12-09  1:53 [PATCH v8] Implement backend program convention command for vhost-user-blk Micky Yun Chan(michiboo)
@ 2019-12-11 15:59 ` Michael S. Tsirkin
  2019-12-19 16:14   ` Stefan Hajnoczi
  0 siblings, 1 reply; 3+ messages in thread
From: Michael S. Tsirkin @ 2019-12-11 15:59 UTC (permalink / raw)
  To: Micky Yun Chan(michiboo); +Cc: qemu-devel, stefanha

On Mon, Dec 09, 2019 at 09:53:31AM +0800, Micky Yun Chan(michiboo) wrote:
> From: Micky Yun Chan <chanmickyyun@gmail.com>
> 
> This patch is to add standard commands defined in docs/interop/vhost-user.rst
> For vhost-user-* program
> 
> Signed-off-by: Micky Yun Chan (michiboo) <chanmickyyun@gmail.com>

Thanks!
I'll queue it for merge after the release. If possible please ping me
after the release to help make sure it didn't get dropped.

> ---
>  contrib/vhost-user-blk/vhost-user-blk.c | 108 ++++++++++++++----------
>  docs/interop/vhost-user.json            |  31 +++++++
>  docs/interop/vhost-user.rst             |  17 ++++
>  3 files changed, 112 insertions(+), 44 deletions(-)
> 
> diff --git a/contrib/vhost-user-blk/vhost-user-blk.c b/contrib/vhost-user-blk/vhost-user-blk.c
> index ae61034656..6fd91c7e99 100644
> --- a/contrib/vhost-user-blk/vhost-user-blk.c
> +++ b/contrib/vhost-user-blk/vhost-user-blk.c
> @@ -576,70 +576,90 @@ vub_new(char *blk_file)
>      return vdev_blk;
>  }
>  
> +static int opt_fdnum = -1;
> +static char *opt_socket_path;
> +static char *opt_blk_file;
> +static gboolean opt_print_caps;
> +static gboolean opt_read_only;
> +
> +static GOptionEntry entries[] = {
> +    { "print-capabilities", 'c', 0, G_OPTION_ARG_NONE, &opt_print_caps,
> +      "Print capabilities", NULL },
> +    { "fd", 'f', 0, G_OPTION_ARG_INT, &opt_fdnum,
> +      "Use inherited fd socket", "FDNUM" },
> +    { "socket-path", 's', 0, G_OPTION_ARG_FILENAME, &opt_socket_path,
> +      "Use UNIX socket path", "PATH" },
> +    {"blk-file", 'b', 0, G_OPTION_ARG_FILENAME, &opt_blk_file,
> +     "block device or file path", "PATH"},
> +    { "read-only", 'r', 0, G_OPTION_ARG_NONE, &opt_read_only,
> +      "Enable read-only", NULL }
> +};
> +
>  int main(int argc, char **argv)
>  {
> -    int opt;
> -    char *unix_socket = NULL;
> -    char *blk_file = NULL;
> -    bool enable_ro = false;
>      int lsock = -1, csock = -1;
>      VubDev *vdev_blk = NULL;
> +    GError *error = NULL;
> +    GOptionContext *context;
>  
> -    while ((opt = getopt(argc, argv, "b:rs:h")) != -1) {
> -        switch (opt) {
> -        case 'b':
> -            blk_file = g_strdup(optarg);
> -            break;
> -        case 's':
> -            unix_socket = g_strdup(optarg);
> -            break;
> -        case 'r':
> -            enable_ro = true;
> -            break;
> -        case 'h':
> -        default:
> -            printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
> -                   " | -r Enable read-only ] | [ -h ]\n", argv[0]);
> -            return 0;
> +    context = g_option_context_new(NULL);
> +    g_option_context_add_main_entries(context, entries, NULL);
> +    if (!g_option_context_parse(context, &argc, &argv, &error)) {
> +        g_printerr("Option parsing failed: %s\n", error->message);
> +        exit(EXIT_FAILURE);
> +    }
> +    if (opt_print_caps) {
> +        g_print("{\n");
> +        g_print("  \"type\": \"block\",\n");
> +        g_print("  \"features\": [\n");
> +        g_print("    \"read-only\",\n");
> +        g_print("    \"blk-file\"\n");
> +        g_print("  ]\n");
> +        g_print("}\n");
> +        exit(EXIT_SUCCESS);
> +    }
> +
> +    if (!opt_blk_file) {
> +        g_print("%s\n", g_option_context_get_help(context, true, NULL));
> +        exit(EXIT_FAILURE);
> +    }
> +
> +    if (opt_socket_path) {
> +        lsock = unix_sock_new(opt_socket_path);
> +        if (lsock < 0) {
> +            exit(EXIT_FAILURE);
>          }
> +    } else if (opt_fdnum < 0) {
> +        g_print("%s\n", g_option_context_get_help(context, true, NULL));
> +        exit(EXIT_FAILURE);
> +    } else {
> +        lsock = opt_fdnum;
>      }
>  
> -    if (!unix_socket || !blk_file) {
> -        printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
> -               " | -r Enable read-only ] | [ -h ]\n", argv[0]);
> -        return -1;
> -    }
> -
> -    lsock = unix_sock_new(unix_socket);
> -    if (lsock < 0) {
> -        goto err;
> -    }
> -
> -    csock = accept(lsock, (void *)0, (void *)0);
> +    csock = accept(lsock, NULL, NULL);
>      if (csock < 0) {
> -        fprintf(stderr, "Accept error %s\n", strerror(errno));
> -        goto err;
> +        g_printerr("Accept error %s\n", strerror(errno));
> +        exit(EXIT_FAILURE);
>      }
>  
> -    vdev_blk = vub_new(blk_file);
> +    vdev_blk = vub_new(opt_blk_file);
>      if (!vdev_blk) {
> -        goto err;
> +        exit(EXIT_FAILURE);
>      }
> -    if (enable_ro) {
> +    if (opt_read_only) {
>          vdev_blk->enable_ro = true;
>      }
>  
>      if (!vug_init(&vdev_blk->parent, VHOST_USER_BLK_MAX_QUEUES, csock,
>                    vub_panic_cb, &vub_iface)) {
> -        fprintf(stderr, "Failed to initialized libvhost-user-glib\n");
> -        goto err;
> +        g_printerr("Failed to initialize libvhost-user-glib\n");
> +        exit(EXIT_FAILURE);
>      }
>  
>      g_main_loop_run(vdev_blk->loop);
> -
> +    g_main_loop_unref(vdev_blk->loop);
> +    g_option_context_free(context);
>      vug_deinit(&vdev_blk->parent);
> -
> -err:
>      vub_free(vdev_blk);
>      if (csock >= 0) {
>          close(csock);
> @@ -647,8 +667,8 @@ err:
>      if (lsock >= 0) {
>          close(lsock);
>      }
> -    g_free(unix_socket);
> -    g_free(blk_file);
> +    g_free(opt_socket_path);
> +    g_free(opt_blk_file);
>  
>      return 0;
>  }
> diff --git a/docs/interop/vhost-user.json b/docs/interop/vhost-user.json
> index da6aaf51c8..ce0ef74db5 100644
> --- a/docs/interop/vhost-user.json
> +++ b/docs/interop/vhost-user.json
> @@ -54,6 +54,37 @@
>    ]
>  }
>  
> +##
> +# @VHostUserBackendBlockFeature:
> +#
> +# List of vhost user "block" features.
> +#
> +# @read-only: The --read-only command line option is supported.
> +# @blk-file: The --blk-file command line option is supported.
> +#
> +# Since: 5.0
> +##
> +{
> +  'enum': 'VHostUserBackendBlockFeature',
> +  'data': [ 'read-only', 'blk-file' ]
> +}
> +
> +##
> +# @VHostUserBackendCapabilitiesBlock:
> +#
> +# Capabilities reported by vhost user "block" backends
> +#
> +# @features: list of supported features.
> +#
> +# Since: 5.0
> +##
> +{
> +  'struct': 'VHostUserBackendCapabilitiesBlock',
> +  'data': {
> +    'features': [ 'VHostUserBackendBlockFeature' ]
> +  }
> +}
> +
>  ##
>  # @VHostUserBackendInputFeature:
>  #
> diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst
> index 7827b710aa..015ac08177 100644
> --- a/docs/interop/vhost-user.rst
> +++ b/docs/interop/vhost-user.rst
> @@ -1376,3 +1376,20 @@ Command line options:
>    Enable virgl rendering support.
>  
>    (optional)
> +
> +vhost-user-blk
> +--------------
> +
> +Command line options:
> +
> +--blk-file=PATH
> +
> +  Specify block device or file path.
> +
> +  (optional)
> +
> +--read-only
> +
> +  Enable read-only.
> +
> +  (optional)
> -- 
> 2.21.0



^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH v8] Implement backend program convention command for vhost-user-blk
  2019-12-11 15:59 ` Michael S. Tsirkin
@ 2019-12-19 16:14   ` Stefan Hajnoczi
  0 siblings, 0 replies; 3+ messages in thread
From: Stefan Hajnoczi @ 2019-12-19 16:14 UTC (permalink / raw)
  To: Michael S. Tsirkin; +Cc: stefanha, qemu-devel, Micky Yun Chan(michiboo)

[-- Attachment #1: Type: text/plain, Size: 7718 bytes --]

On Wed, Dec 11, 2019 at 10:59:38AM -0500, Michael S. Tsirkin wrote:
> On Mon, Dec 09, 2019 at 09:53:31AM +0800, Micky Yun Chan(michiboo) wrote:
> > From: Micky Yun Chan <chanmickyyun@gmail.com>
> > 
> > This patch is to add standard commands defined in docs/interop/vhost-user.rst
> > For vhost-user-* program
> > 
> > Signed-off-by: Micky Yun Chan (michiboo) <chanmickyyun@gmail.com>
> 
> Thanks!
> I'll queue it for merge after the release. If possible please ping me
> after the release to help make sure it didn't get dropped.

Ping, just in case :)

> > ---
> >  contrib/vhost-user-blk/vhost-user-blk.c | 108 ++++++++++++++----------
> >  docs/interop/vhost-user.json            |  31 +++++++
> >  docs/interop/vhost-user.rst             |  17 ++++
> >  3 files changed, 112 insertions(+), 44 deletions(-)
> > 
> > diff --git a/contrib/vhost-user-blk/vhost-user-blk.c b/contrib/vhost-user-blk/vhost-user-blk.c
> > index ae61034656..6fd91c7e99 100644
> > --- a/contrib/vhost-user-blk/vhost-user-blk.c
> > +++ b/contrib/vhost-user-blk/vhost-user-blk.c
> > @@ -576,70 +576,90 @@ vub_new(char *blk_file)
> >      return vdev_blk;
> >  }
> >  
> > +static int opt_fdnum = -1;
> > +static char *opt_socket_path;
> > +static char *opt_blk_file;
> > +static gboolean opt_print_caps;
> > +static gboolean opt_read_only;
> > +
> > +static GOptionEntry entries[] = {
> > +    { "print-capabilities", 'c', 0, G_OPTION_ARG_NONE, &opt_print_caps,
> > +      "Print capabilities", NULL },
> > +    { "fd", 'f', 0, G_OPTION_ARG_INT, &opt_fdnum,
> > +      "Use inherited fd socket", "FDNUM" },
> > +    { "socket-path", 's', 0, G_OPTION_ARG_FILENAME, &opt_socket_path,
> > +      "Use UNIX socket path", "PATH" },
> > +    {"blk-file", 'b', 0, G_OPTION_ARG_FILENAME, &opt_blk_file,
> > +     "block device or file path", "PATH"},
> > +    { "read-only", 'r', 0, G_OPTION_ARG_NONE, &opt_read_only,
> > +      "Enable read-only", NULL }
> > +};
> > +
> >  int main(int argc, char **argv)
> >  {
> > -    int opt;
> > -    char *unix_socket = NULL;
> > -    char *blk_file = NULL;
> > -    bool enable_ro = false;
> >      int lsock = -1, csock = -1;
> >      VubDev *vdev_blk = NULL;
> > +    GError *error = NULL;
> > +    GOptionContext *context;
> >  
> > -    while ((opt = getopt(argc, argv, "b:rs:h")) != -1) {
> > -        switch (opt) {
> > -        case 'b':
> > -            blk_file = g_strdup(optarg);
> > -            break;
> > -        case 's':
> > -            unix_socket = g_strdup(optarg);
> > -            break;
> > -        case 'r':
> > -            enable_ro = true;
> > -            break;
> > -        case 'h':
> > -        default:
> > -            printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
> > -                   " | -r Enable read-only ] | [ -h ]\n", argv[0]);
> > -            return 0;
> > +    context = g_option_context_new(NULL);
> > +    g_option_context_add_main_entries(context, entries, NULL);
> > +    if (!g_option_context_parse(context, &argc, &argv, &error)) {
> > +        g_printerr("Option parsing failed: %s\n", error->message);
> > +        exit(EXIT_FAILURE);
> > +    }
> > +    if (opt_print_caps) {
> > +        g_print("{\n");
> > +        g_print("  \"type\": \"block\",\n");
> > +        g_print("  \"features\": [\n");
> > +        g_print("    \"read-only\",\n");
> > +        g_print("    \"blk-file\"\n");
> > +        g_print("  ]\n");
> > +        g_print("}\n");
> > +        exit(EXIT_SUCCESS);
> > +    }
> > +
> > +    if (!opt_blk_file) {
> > +        g_print("%s\n", g_option_context_get_help(context, true, NULL));
> > +        exit(EXIT_FAILURE);
> > +    }
> > +
> > +    if (opt_socket_path) {
> > +        lsock = unix_sock_new(opt_socket_path);
> > +        if (lsock < 0) {
> > +            exit(EXIT_FAILURE);
> >          }
> > +    } else if (opt_fdnum < 0) {
> > +        g_print("%s\n", g_option_context_get_help(context, true, NULL));
> > +        exit(EXIT_FAILURE);
> > +    } else {
> > +        lsock = opt_fdnum;
> >      }
> >  
> > -    if (!unix_socket || !blk_file) {
> > -        printf("Usage: %s [ -b block device or file, -s UNIX domain socket"
> > -               " | -r Enable read-only ] | [ -h ]\n", argv[0]);
> > -        return -1;
> > -    }
> > -
> > -    lsock = unix_sock_new(unix_socket);
> > -    if (lsock < 0) {
> > -        goto err;
> > -    }
> > -
> > -    csock = accept(lsock, (void *)0, (void *)0);
> > +    csock = accept(lsock, NULL, NULL);
> >      if (csock < 0) {
> > -        fprintf(stderr, "Accept error %s\n", strerror(errno));
> > -        goto err;
> > +        g_printerr("Accept error %s\n", strerror(errno));
> > +        exit(EXIT_FAILURE);
> >      }
> >  
> > -    vdev_blk = vub_new(blk_file);
> > +    vdev_blk = vub_new(opt_blk_file);
> >      if (!vdev_blk) {
> > -        goto err;
> > +        exit(EXIT_FAILURE);
> >      }
> > -    if (enable_ro) {
> > +    if (opt_read_only) {
> >          vdev_blk->enable_ro = true;
> >      }
> >  
> >      if (!vug_init(&vdev_blk->parent, VHOST_USER_BLK_MAX_QUEUES, csock,
> >                    vub_panic_cb, &vub_iface)) {
> > -        fprintf(stderr, "Failed to initialized libvhost-user-glib\n");
> > -        goto err;
> > +        g_printerr("Failed to initialize libvhost-user-glib\n");
> > +        exit(EXIT_FAILURE);
> >      }
> >  
> >      g_main_loop_run(vdev_blk->loop);
> > -
> > +    g_main_loop_unref(vdev_blk->loop);
> > +    g_option_context_free(context);
> >      vug_deinit(&vdev_blk->parent);
> > -
> > -err:
> >      vub_free(vdev_blk);
> >      if (csock >= 0) {
> >          close(csock);
> > @@ -647,8 +667,8 @@ err:
> >      if (lsock >= 0) {
> >          close(lsock);
> >      }
> > -    g_free(unix_socket);
> > -    g_free(blk_file);
> > +    g_free(opt_socket_path);
> > +    g_free(opt_blk_file);
> >  
> >      return 0;
> >  }
> > diff --git a/docs/interop/vhost-user.json b/docs/interop/vhost-user.json
> > index da6aaf51c8..ce0ef74db5 100644
> > --- a/docs/interop/vhost-user.json
> > +++ b/docs/interop/vhost-user.json
> > @@ -54,6 +54,37 @@
> >    ]
> >  }
> >  
> > +##
> > +# @VHostUserBackendBlockFeature:
> > +#
> > +# List of vhost user "block" features.
> > +#
> > +# @read-only: The --read-only command line option is supported.
> > +# @blk-file: The --blk-file command line option is supported.
> > +#
> > +# Since: 5.0
> > +##
> > +{
> > +  'enum': 'VHostUserBackendBlockFeature',
> > +  'data': [ 'read-only', 'blk-file' ]
> > +}
> > +
> > +##
> > +# @VHostUserBackendCapabilitiesBlock:
> > +#
> > +# Capabilities reported by vhost user "block" backends
> > +#
> > +# @features: list of supported features.
> > +#
> > +# Since: 5.0
> > +##
> > +{
> > +  'struct': 'VHostUserBackendCapabilitiesBlock',
> > +  'data': {
> > +    'features': [ 'VHostUserBackendBlockFeature' ]
> > +  }
> > +}
> > +
> >  ##
> >  # @VHostUserBackendInputFeature:
> >  #
> > diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst
> > index 7827b710aa..015ac08177 100644
> > --- a/docs/interop/vhost-user.rst
> > +++ b/docs/interop/vhost-user.rst
> > @@ -1376,3 +1376,20 @@ Command line options:
> >    Enable virgl rendering support.
> >  
> >    (optional)
> > +
> > +vhost-user-blk
> > +--------------
> > +
> > +Command line options:
> > +
> > +--blk-file=PATH
> > +
> > +  Specify block device or file path.
> > +
> > +  (optional)
> > +
> > +--read-only
> > +
> > +  Enable read-only.
> > +
> > +  (optional)
> > -- 
> > 2.21.0
> 
> 

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^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2019-12-19 16:15 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-09  1:53 [PATCH v8] Implement backend program convention command for vhost-user-blk Micky Yun Chan(michiboo)
2019-12-11 15:59 ` Michael S. Tsirkin
2019-12-19 16:14   ` Stefan Hajnoczi

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