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src: don't hide error in VIR_DRV_SUPPORTS_FEATURE

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Otherwise we can get misleading error messages. One example is when connection
is broken we got "this function is not supported by the connection driver:
virDomainMigrate3" from virDomainMigrate3.

Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Nikolay Shirokovskiy 2020-12-18 09:40:04 +03:00 committed by Nick Shyrokovskiy
parent 910b94dfe4
commit 3e883cf07e
1 changed files with 3 additions and 6 deletions
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9
src/driver.h
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@ -47,17 +47,14 @@ typedef enum {
* directly if you don't have to, because it may be NULL, use this macro
* instead.
*
* Note that this treats a possible error returned by drv->supports_feature
* the same as not supported. If you care about the error, call
* drv->supports_feature directly.
*
* Returns:
* != 0 Feature is supported.
* -1 Error
* >0 Feature is supported.
* 0 Feature is not supported.
*/
#define VIR_DRV_SUPPORTS_FEATURE(drv, conn, feature) \
((drv)->connectSupportsFeature ? \
(drv)->connectSupportsFeature((conn), (feature)) > 0 : 0)
(drv)->connectSupportsFeature((conn), (feature)) : 0)
#define __VIR_DRIVER_H_INCLUDES___