diff mbox

[RFC,v3,for-2.9,05/11] rbd: Don't accept -drive driver=rbd, keyvalue-pairs=...

Message ID 1490621195-2228-6-git-send-email-armbru@redhat.com
State New
Headers show

Commit Message

Markus Armbruster March 27, 2017, 1:26 p.m. UTC
The way we communicate extra key-value pairs from
qemu_rbd_parse_filename() to qemu_rbd_open() exposes option parameter
"keyvalue-pairs" on the command line.  It's not wanted there.  Hack:
rename the parameter to "=keyvalue-pairs" to make it inaccessible.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 block/rbd.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Comments

Max Reitz March 27, 2017, 4:29 p.m. UTC | #1
On 27.03.2017 15:26, Markus Armbruster wrote:
> The way we communicate extra key-value pairs from
> qemu_rbd_parse_filename() to qemu_rbd_open() exposes option parameter
> "keyvalue-pairs" on the command line.  It's not wanted there.  Hack:
> rename the parameter to "=keyvalue-pairs" to make it inaccessible.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> ---
>  block/rbd.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)

Reviewed-by: Max Reitz <mreitz@redhat.com>

(Or you could just use x- like blkdebug does...)

Max
Markus Armbruster March 27, 2017, 6:26 p.m. UTC | #2
Max Reitz <mreitz@redhat.com> writes:

> On 27.03.2017 15:26, Markus Armbruster wrote:
>> The way we communicate extra key-value pairs from
>> qemu_rbd_parse_filename() to qemu_rbd_open() exposes option parameter
>> "keyvalue-pairs" on the command line.  It's not wanted there.  Hack:
>> rename the parameter to "=keyvalue-pairs" to make it inaccessible.
>> 
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> Reviewed-by: Eric Blake <eblake@redhat.com>
>> ---
>>  block/rbd.c | 12 ++++++++----
>>  1 file changed, 8 insertions(+), 4 deletions(-)
>
> Reviewed-by: Max Reitz <mreitz@redhat.com>

Thanks!

> (Or you could just use x- like blkdebug does...)

Yes.

An "x-" prefix tells you "don't use this", which you're free to ignore.
The "=" prefix cannot be ignored, because the QemuOpts parser will
choke on it.

Matter of taste, I guess.
Jeff Cody March 28, 2017, 2:15 a.m. UTC | #3
On Mon, Mar 27, 2017 at 03:26:29PM +0200, Markus Armbruster wrote:
> The way we communicate extra key-value pairs from
> qemu_rbd_parse_filename() to qemu_rbd_open() exposes option parameter
> "keyvalue-pairs" on the command line.  It's not wanted there.  Hack:
> rename the parameter to "=keyvalue-pairs" to make it inaccessible.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>

Reviewed-by: Jeff Cody <jcody@redhat.com>

> ---
>  block/rbd.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/block/rbd.c b/block/rbd.c
> index 182a5a3..2632533 100644
> --- a/block/rbd.c
> +++ b/block/rbd.c
> @@ -215,7 +215,7 @@ static void qemu_rbd_parse_filename(const char *filename, QDict *options,
>      }
>  
>      if (keypairs[0]) {
> -        qdict_put(options, "keyvalue-pairs", qstring_from_str(keypairs));
> +        qdict_put(options, "=keyvalue-pairs", qstring_from_str(keypairs));
>      }
>  
>  
> @@ -330,7 +330,11 @@ static QemuOptsList runtime_opts = {
>              .help = "Rados id name",
>          },
>          {
> -            .name = "keyvalue-pairs",
> +            /*
> +             * HACK: name starts with '=' so that qemu_opts_parse()
> +             * can't set it
> +             */
> +            .name = "=keyvalue-pairs",
>              .type = QEMU_OPT_STRING,
>              .help = "Legacy rados key/value option parameters",
>          },
> @@ -405,7 +409,7 @@ static int qemu_rbd_create(const char *filename, QemuOpts *opts, Error **errp)
>      conf       = qemu_opt_get(rbd_opts, "conf");
>      clientname = qemu_opt_get(rbd_opts, "user");
>      name       = qemu_opt_get(rbd_opts, "image");
> -    keypairs   = qemu_opt_get(rbd_opts, "keyvalue-pairs");
> +    keypairs   = qemu_opt_get(rbd_opts, "=keyvalue-pairs");
>  
>      ret = rados_create(&cluster, clientname);
>      if (ret < 0) {
> @@ -638,7 +642,7 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
>      snap           = qemu_opt_get(opts, "snapshot");
>      clientname     = qemu_opt_get(opts, "user");
>      name           = qemu_opt_get(opts, "image");
> -    keypairs       = qemu_opt_get(opts, "keyvalue-pairs");
> +    keypairs       = qemu_opt_get(opts, "=keyvalue-pairs");
>  
>      if (!pool || !name) {
>          error_setg(errp, "Parameters 'pool' and 'image' are required");
> -- 
> 2.7.4
>
diff mbox

Patch

diff --git a/block/rbd.c b/block/rbd.c
index 182a5a3..2632533 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -215,7 +215,7 @@  static void qemu_rbd_parse_filename(const char *filename, QDict *options,
     }
 
     if (keypairs[0]) {
-        qdict_put(options, "keyvalue-pairs", qstring_from_str(keypairs));
+        qdict_put(options, "=keyvalue-pairs", qstring_from_str(keypairs));
     }
 
 
@@ -330,7 +330,11 @@  static QemuOptsList runtime_opts = {
             .help = "Rados id name",
         },
         {
-            .name = "keyvalue-pairs",
+            /*
+             * HACK: name starts with '=' so that qemu_opts_parse()
+             * can't set it
+             */
+            .name = "=keyvalue-pairs",
             .type = QEMU_OPT_STRING,
             .help = "Legacy rados key/value option parameters",
         },
@@ -405,7 +409,7 @@  static int qemu_rbd_create(const char *filename, QemuOpts *opts, Error **errp)
     conf       = qemu_opt_get(rbd_opts, "conf");
     clientname = qemu_opt_get(rbd_opts, "user");
     name       = qemu_opt_get(rbd_opts, "image");
-    keypairs   = qemu_opt_get(rbd_opts, "keyvalue-pairs");
+    keypairs   = qemu_opt_get(rbd_opts, "=keyvalue-pairs");
 
     ret = rados_create(&cluster, clientname);
     if (ret < 0) {
@@ -638,7 +642,7 @@  static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
     snap           = qemu_opt_get(opts, "snapshot");
     clientname     = qemu_opt_get(opts, "user");
     name           = qemu_opt_get(opts, "image");
-    keypairs       = qemu_opt_get(opts, "keyvalue-pairs");
+    keypairs       = qemu_opt_get(opts, "=keyvalue-pairs");
 
     if (!pool || !name) {
         error_setg(errp, "Parameters 'pool' and 'image' are required");