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util: mdev: Introduce virMediatedDeviceTypeReadAttrs getter
This should serve as a replacement for the existing udevFillMdevType which is responsible for fetching the device type's attributes from the sysfs interface. The problem with the existing solution is that it's tied to the udev backend. Signed-off-by: Erik Skultety <eskultet@redhat.com>
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@ -2182,6 +2182,7 @@ virMediatedDeviceModelTypeToString;
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virMediatedDeviceNew;
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virMediatedDeviceNew;
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virMediatedDeviceSetUsedBy;
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virMediatedDeviceSetUsedBy;
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virMediatedDeviceTypeFree;
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virMediatedDeviceTypeFree;
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virMediatedDeviceTypeReadAttrs;
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@ -496,3 +496,37 @@ virMediatedDeviceTypeFree(virMediatedDeviceTypePtr type)
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VIR_FREE(type->device_api);
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VIR_FREE(type->device_api);
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VIR_FREE(type);
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VIR_FREE(type);
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}
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}
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int
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virMediatedDeviceTypeReadAttrs(const char *sysfspath,
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virMediatedDeviceTypePtr *type)
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{
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int ret = -1;
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virMediatedDeviceTypePtr tmp = NULL;
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#define MDEV_GET_SYSFS_ATTR(attr, dst, cb) \
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do { \
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if (cb(dst, "%s/%s", sysfspath, attr) < 0) \
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goto cleanup; \
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} while (0)
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if (VIR_ALLOC(tmp) < 0)
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goto cleanup;
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if (VIR_STRDUP(tmp->id, last_component(sysfspath)) < 0)
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goto cleanup;
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MDEV_GET_SYSFS_ATTR("name", &tmp->name, virFileReadValueString);
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MDEV_GET_SYSFS_ATTR("device_api", &tmp->device_api, virFileReadValueString);
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MDEV_GET_SYSFS_ATTR("available_instances", &tmp->available_instances,
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virFileReadValueUint);
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#undef MDEV_GET_SYSFS_ATTR
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VIR_STEAL_PTR(*type, tmp);
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ret = 0;
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cleanup:
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virMediatedDeviceTypeFree(tmp);
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return ret;
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}
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@ -129,4 +129,9 @@ virMediatedDeviceListMarkDevices(virMediatedDeviceListPtr dst,
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void
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void
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virMediatedDeviceTypeFree(virMediatedDeviceTypePtr type);
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virMediatedDeviceTypeFree(virMediatedDeviceTypePtr type);
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int
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virMediatedDeviceTypeReadAttrs(const char *sysfspath,
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virMediatedDeviceTypePtr *type);
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#endif /* __VIR_MDEV_H__ */
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#endif /* __VIR_MDEV_H__ */
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