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util: cgroup: wrap BACKEND_CALL macro in a block

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VIR_CGROUP_BACKEND_CALL is exclusively used at the end
of a function, but it declares a variable.

Wrap it in a do..while block.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Ján Tomko 2020-07-28 20:08:07 +02:00
parent 33e3c69320
commit c23c7dac9b
1 changed files with 14 additions and 12 deletions
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26
src/util/vircgroupbackend.h
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@ -452,15 +452,17 @@ virCgroupBackendForController(virCgroupPtr group,
unsigned int controller);
#define VIR_CGROUP_BACKEND_CALL(group, controller, func, ret, ...) \
virCgroupBackendPtr backend = virCgroupBackendForController(group, controller); \
if (!backend) { \
virReportError(VIR_ERR_INTERNAL_ERROR, \
_("failed to get cgroup backend for '%s'"), #func); \
return ret; \
} \
if (!backend->func) { \
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, \
_("operation '%s' not supported"), #func); \
return ret; \
} \
return backend->func(group, ##__VA_ARGS__);
do { \
virCgroupBackendPtr backend = virCgroupBackendForController(group, controller); \
if (!backend) { \
virReportError(VIR_ERR_INTERNAL_ERROR, \
_("failed to get cgroup backend for '%s'"), #func); \
return ret; \
} \
if (!backend->func) { \
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, \
_("operation '%s' not supported"), #func); \
return ret; \
} \
return backend->func(group, ##__VA_ARGS__); \
} while (0)