Hi Need your kind help for one question!
Do libudev have a function that could be used to filter the message with property from kernel socket? I am writing an APPs like "udevadm monitor". I see the function "udev_monitor_filter_add_match_subsystem_devtype()" could filter the devtype for the message. And I see the "udev_monitor_filter_add_match_tag" could filter the tag. (But I don't know how does it work) When I use "udevadm monitor --subsystem-match=pci --env" command, I could see some messages from kernel like below. For example, I only want the messages contains "property=value" like "PCI_ID=8086:4941" could come up from kernel space. Could you please shed a light on this? ################################################################################################################################################ KERNEL[76915.968785] bind /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/VMBUS:01/ec21a818-5106-49c3-a6f6-e4cb872df440/pci5106:00/5106:00:00.0 (pci) ACTION=bind DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/VMBUS:01/ec21a818-5106-49c3-a6f6-e4cb872df440/pci5106:00/5106:00:00.0 SUBSYSTEM=pci DRIVER=4xxxvf PCI_CLASS=B4000 PCI_ID=8086:4941 PCI_SUBSYS_ID=8086:0000 PCI_SLOT_NAME=5106:00:00.0 MODALIAS=pci:v00008086d00004941sv00008086sd00000000bc0Bsc40i00 SEQNUM=5527 UDEV [76915.974190] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/VMBUS:01/ec21a818-5106-49c3-a6f6-e4cb872df440/pci5106:00/5106:00:00.0 (pci) ACTION=change DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/VMBUS:01/ec21a818-5106-49c3-a6f6-e4cb872df440/pci5106:00/5106:00:00.0 SUBSYSTEM=pci qat_event=restarted accelid=0 DRIVER=4xxxvf PCI_CLASS=B4000 PCI_ID=8086:4941 PCI_SUBSYS_ID=8086:0000 PCI_SLOT_NAME=5106:00:00.0 MODALIAS=pci:v00008086d00004941sv00008086sd00000000bc0Bsc40i00 SEQNUM=5526 USEC_INITIALIZED=76915555086 ID_PCI_CLASS_FROM_DATABASE=Processor ID_PCI_SUBCLASS_FROM_DATABASE=Co-processor ID_VENDOR_FROM_DATABASE=Intel Corporation ################################################################################################################################################ - Yuan
