D21379: [UDev Backend] Narrow subsystems queried for cameras

[Stefan Brüns]

bruns added a comment.


  sd[a-z] is subsystem "block"
  sg[0-9] is susbsystem "scsi_generic"
  
  none of the ID_GPHOTO2==1 devices is a tty or dvb device

INLINE COMMENTS

> udevqtclient.h:53
>      DeviceList devicesBySubsystem(const QString &subsystem);
> +    DeviceList devicesBySubsystemsAndProperties(const QStringList &subsystems, const QVariantMap &properties);
>      Device deviceByDeviceFile(const QString &deviceFile);

This definitely needs some documentation

- values in subsystems form a union (ORed)
- key/values in properties form a union (ORed)

- both unions are intersected (ANDed)

i.e. in the camera case, (usb || dvb || tty) && (ID_GPHOTO2==1)

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D21379

To: broulik, #frameworks, davidedmundson, bruns
Cc: apol, kde-frameworks-devel, michaelh, ngraham, bruns
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