diff mbox

[v3,05/14] qemu-img: Use blk_new_open() in img_open()

Message ID 1422284444-12529-6-git-send-email-mreitz@redhat.com
State New
Headers show

Commit Message

Max Reitz Jan. 26, 2015, 3 p.m. UTC
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 qemu-img.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

Comments

Eric Blake Jan. 26, 2015, 10:47 p.m. UTC | #1
On 01/26/2015 08:00 AM, Max Reitz wrote:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
>  qemu-img.c | 20 ++++++--------------
>  1 file changed, 6 insertions(+), 14 deletions(-)
> 

Reviewed-by: Eric Blake <eblake@redhat.com>
Kevin Wolf Feb. 2, 2015, 6:35 p.m. UTC | #2
Am 26.01.2015 um 16:00 hat Max Reitz geschrieben:
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
>  qemu-img.c | 20 ++++++--------------
>  1 file changed, 6 insertions(+), 14 deletions(-)
> 
> diff --git a/qemu-img.c b/qemu-img.c
> index 4e9a7f5..be1953d 100644
> --- a/qemu-img.c
> +++ b/qemu-img.c
> @@ -291,32 +291,24 @@ static BlockBackend *img_open(const char *id, const char *filename,
>  {
>      BlockBackend *blk;
>      BlockDriverState *bs;
> -    BlockDriver *drv;
>      char password[256];
>      Error *local_err = NULL;
> -    int ret;
> -
> -    blk = blk_new_with_bs(id, &error_abort);
> -    bs = blk_bs(blk);
> +    QDict *options = NULL;
>  
>      if (fmt) {
> -        drv = bdrv_find_format(fmt);
> -        if (!drv) {
> -            error_report("Unknown file format '%s'", fmt);
> -            goto fail;
> -        }
> -    } else {
> -        drv = NULL;
> +        options = qdict_new();
> +        qdict_put_obj(options, "driver", QOBJECT(qstring_from_str(fmt)));

I'm only noticing it here, though you did the same in the previous
patches. This can be written shorter as:

    qdict_put(options, "driver", qstring_from_str(fmt));

>      }
>  
> -    ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err);
> -    if (ret < 0) {
> +    blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
> +    if (!blk) {
>          error_report("Could not open '%s': %s", filename,
>                       error_get_pretty(local_err));
>          error_free(local_err);
>          goto fail;
>      }
>  
> +    bs = blk_bs(blk);
>      if (bdrv_is_encrypted(bs) && require_io) {
>          qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
>          if (read_password(password, sizeof(password)) < 0) {

Kevin
Max Reitz Feb. 2, 2015, 7:42 p.m. UTC | #3
On 2015-02-02 at 13:35, Kevin Wolf wrote:
> Am 26.01.2015 um 16:00 hat Max Reitz geschrieben:
>> Signed-off-by: Max Reitz <mreitz@redhat.com>
>> ---
>>   qemu-img.c | 20 ++++++--------------
>>   1 file changed, 6 insertions(+), 14 deletions(-)
>>
>> diff --git a/qemu-img.c b/qemu-img.c
>> index 4e9a7f5..be1953d 100644
>> --- a/qemu-img.c
>> +++ b/qemu-img.c
>> @@ -291,32 +291,24 @@ static BlockBackend *img_open(const char *id, const char *filename,
>>   {
>>       BlockBackend *blk;
>>       BlockDriverState *bs;
>> -    BlockDriver *drv;
>>       char password[256];
>>       Error *local_err = NULL;
>> -    int ret;
>> -
>> -    blk = blk_new_with_bs(id, &error_abort);
>> -    bs = blk_bs(blk);
>> +    QDict *options = NULL;
>>   
>>       if (fmt) {
>> -        drv = bdrv_find_format(fmt);
>> -        if (!drv) {
>> -            error_report("Unknown file format '%s'", fmt);
>> -            goto fail;
>> -        }
>> -    } else {
>> -        drv = NULL;
>> +        options = qdict_new();
>> +        qdict_put_obj(options, "driver", QOBJECT(qstring_from_str(fmt)));
> I'm only noticing it here, though you did the same in the previous
> patches. This can be written shorter as:
>
>      qdict_put(options, "driver", qstring_from_str(fmt));

Indeed, will do.

Max

>>       }
>>   
>> -    ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err);
>> -    if (ret < 0) {
>> +    blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
>> +    if (!blk) {
>>           error_report("Could not open '%s': %s", filename,
>>                        error_get_pretty(local_err));
>>           error_free(local_err);
>>           goto fail;
>>       }
>>   
>> +    bs = blk_bs(blk);
>>       if (bdrv_is_encrypted(bs) && require_io) {
>>           qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
>>           if (read_password(password, sizeof(password)) < 0) {
> Kevin
diff mbox

Patch

diff --git a/qemu-img.c b/qemu-img.c
index 4e9a7f5..be1953d 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -291,32 +291,24 @@  static BlockBackend *img_open(const char *id, const char *filename,
 {
     BlockBackend *blk;
     BlockDriverState *bs;
-    BlockDriver *drv;
     char password[256];
     Error *local_err = NULL;
-    int ret;
-
-    blk = blk_new_with_bs(id, &error_abort);
-    bs = blk_bs(blk);
+    QDict *options = NULL;
 
     if (fmt) {
-        drv = bdrv_find_format(fmt);
-        if (!drv) {
-            error_report("Unknown file format '%s'", fmt);
-            goto fail;
-        }
-    } else {
-        drv = NULL;
+        options = qdict_new();
+        qdict_put_obj(options, "driver", QOBJECT(qstring_from_str(fmt)));
     }
 
-    ret = bdrv_open(&bs, filename, NULL, NULL, flags, drv, &local_err);
-    if (ret < 0) {
+    blk = blk_new_open(id, filename, NULL, options, flags, &local_err);
+    if (!blk) {
         error_report("Could not open '%s': %s", filename,
                      error_get_pretty(local_err));
         error_free(local_err);
         goto fail;
     }
 
+    bs = blk_bs(blk);
     if (bdrv_is_encrypted(bs) && require_io) {
         qprintf(quiet, "Disk image '%s' is encrypted.\n", filename);
         if (read_password(password, sizeof(password)) < 0) {