udev - program to query all device attributes to build a rule

Hi,
here is a small program to query all attributes of a device and print these in the udev key format. It may help to get the keys to define a rule.

thanks,
Kay

USB Flash Reader:

    kay@pim:~/src/udev.kay/extras/udevinfo$ ./udevinfo /sys/block/sda/sda3
    device '/sys/block/sda/sda3' has major:minor 8:3

    looking at class device '/sys/block/sda/sda3':
      SYSFS_dev="8:3"
      SYSFS_start="384"
      SYSFS_size="192"
      SYSFS_stat="       0        0        0        0"

    follow class device's "device" link '/sys/block/sda':
      BUS="scsi"
      ID="56:0:0:0"
      SYSFS_dev="8:0"
      SYSFS_range="16"
      SYSFS_size="31360"
      SYSFS_stat="      12        0       96       88        0        0 0        0        0       88       88"

Or the USB Webcam:

    kay@pim:~/src/udev.kay/extras/udevinfo$ ./udevinfo /sys/class/video4linux/video0/
    device '/sys/class/video4linux/video0' has major:minor 81:0

    looking at class device '/sys/class/video4linux/video0':
      SYSFS_dev="81:0"
      SYSFS_name="OV511 USB Camera"
      SYSFS_custom_id="21"
      SYSFS_model="Creative Labs WebCam 3"
      SYSFS_bridge="OV511+"
      SYSFS_sensor="OV7620"
      SYSFS_brightness="105"
      SYSFS_saturation="192"
      SYSFS_contrast="86"
      SYSFS_hue="128"
      SYSFS_exposure="0"

    follow class device's "device" link '/sys/class/video4linux/video0':
      BUS="usb"
      ID="1-1.2"
      SYSFS_dev="81:0"
      SYSFS_name="OV511 USB Camera"
      SYSFS_custom_id="21"
      SYSFS_model="Creative Labs WebCam 3"
      SYSFS_bridge="OV511+"
      SYSFS_sensor="OV7620"
      SYSFS_brightness="105"
      SYSFS_saturation="192"
      SYSFS_contrast="86"
      SYSFS_hue="128"
      SYSFS_exposure="0"

diff -Nru a/extras/udevinfo/Makefile b/extras/udevinfo/Makefile
@@ -0,0 +1,14 @@
+PROG=udevinfo
+LD=$(CC)
+OBJS=udevinfo.o
+
+all:	$(PROG)
+
+clean:
+	rm -f $(PROG) $(OBJS)
+
+$(PROG):	$(OBJS)
+	$(LD) $(LDFLAGS) -o $(PROG) $(CRT0) $(OBJS) $(SYSFS)
+
+me:
+	cd ../..; make EXTRAS=extras/udevinfo

Fixed a typo - the sysfs_device is right now.

USB FLash Reader:

    kay@pim:~/src/udev.kay$ extras/udevinfo/udevinfo /sys/block/sda/sda1

    device '/sys/block/sda/sda1' has major:minor 8:1

    looking at class device '/sys/block/sda/sda1':
      SYSFS_dev="8:1"
      SYSFS_start="32"
      SYSFS_size="160"
      SYSFS_stat="       0        0        0        0"

    follow class device's "device" link '/sys/block/sda':
      BUS="scsi"
      ID="57:0:0:0"
      SYSFS_detach_state="0"
      SYSFS_type="0"
      SYSFS_device_blocked="0"
      SYSFS_queue_depth="1"
      SYSFS_scsi_level="3"
      SYSFS_vendor="SMSC    "
      SYSFS_model="USB 2 HS-CF"
      SYSFS_rev="1.25"
      SYSFS_online="1"

diff -Nru a/extras/udevinfo/Makefile b/extras/udevinfo/Makefile
@@ -0,0 +1,14 @@
+PROG=udevinfo
+LD=$(CC)
+OBJS=udevinfo.o
+
+all:	$(PROG)
+
+clean:
+	rm -f $(PROG) $(OBJS)
+
+$(PROG):	$(OBJS)
+	$(LD) $(LDFLAGS) -o $(PROG) $(CRT0) $(OBJS) $(SYSFS)
+
+me:
+	cd ../..; make EXTRAS=extras/udevinfo

Nice program. Applied, thanks.

greg k-h

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I get link errors without this patch.

make 'EXTRAS=extras/scsi_id extras/udevinfo' USE_LOGúlse USE_KLIBC=true STRIP=/bin/true

Maybe I should build it against glibc.

@@ -1,5 +1,6 @@
 PROG=udevinfo
 LD=$(CC)
+override SYSFS= -L../../libsysfs -lsysfs
 OBJS=udevinfo.o
 
 all:	$(PROG)

@@ -8,7 +9,7 @@ clean:
 	rm -f $(PROG) $(OBJS)
 
 $(PROG):	$(OBJS)
-	$(LD) $(LDFLAGS) -o $(PROG) $(CRT0) $(OBJS) $(SYSFS)
+	$(LD) $(LDFLAGS) -o $(PROG) $(CRT0) $(OBJS) $(SYSFS) $(LIB_OBJS) $(ARCH_LIB_OBJS)
 
 me:
 	cd ../..; make EXTRAS=extras/udevinfo

USB is for mice, FireWire is for men!

sUse lINUX ag, nÃœRNBERG


-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
[email protected]
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel