This user guide has been written to help you when you receive a usb monitor Linux kernel error code.
The name “usbmon” in lowercase refers to the device using the kernelUsed to collect traces, most commonly associated with I/O on the USB bus. This function is similarto burst output used by network monitoring tools such as Ethereal tcpdump(1).Where. It is also to be expected that a tool such as usbdump orUSBMon (capitalized) is used to check the generated raw facial lines.with usbmon.
usbmon informs the host of requests for specific devices prepared by drivers.Controller Driver (HCD). Therefore, if the HCD fails, all traces will be reported.usbmon can match bus transactions exactly. It’s probably the sameSituation with tcpdump.
Two APIs are currently implemented: “Text” and “Binary”. Binary APIaccessible through any character device type in spacenstve names /dev and then is the ABI.The Text API has been deprecated since version 2.6.35, but is available for convenience.
How To Use Usbmon To Get A Plain Text Trace¶
In contrast to receiving packets, usbmon has a tracing interface.in text format. This can be used for two purposes. The house originally servedGeneral tracing format change for tools, while more fancy formatsFinished. Secondly, people can read the site when the tools are not always available.
To record a text track, do the following.
1. Training …..¶
Mount debugfs (must be enabled in someone’s kernel configuration) andload the usbmon module (if built as a module). The second approach is ignoredif usbmon was compiled to compile the kernel:
# mount -t debugfs none_debugs /sys/kernel/debug# modprobe usbmon#
Make sure there are bus connectors:
# ls /sys/kernel/debug/usb/usbmon0s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u#
Most people can now use either socket ‘0u’ (for capturing packets on allbus) and go to the centerClue #3 or find a used bus on your device with luggage storage #2.This filters out annoying products that keep talking.
2. Find Out Which Mci Coach Connects To The Desired “cat Device”
Run /sys/kernel/debug/usb/devices and look for the corresponding line TAt the phone. You can usually use it to look up a vendor string. If you havedisassemble many similar devices, compare one and each of our two/sys/kernel/debug/usb/devices. Line T shows your bus number.
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 1 #Cfgs= 1P: Vendor=0557 ProdID=2004 Rev=1.00s: Provider=ATENS: Product = UC100KM V2.00
“Bus=03″ means it’s bus 3. You can also see the product”lsusb” and get the corresponding line’s shuttle number. Example:
Bus 003, device 002: ID 0557:2004, data UC100KM V2.00
3. Start Chat”
# /sys/kernel/debug/usb/usbmon/3u Cats > /tmp/1.mon.out
to intercept one metro, otherwise to intercept any type:
# bus, cat /sys/kernel/debug/usb/usbmon/0u > /tmp/1.mon.out
This drawing will be playedProduced until it is successfully destroyed. Of course, the way out can beis redirected to the finally desired location. This is more desirable because it can be donebe long.
4.Perform The Desired Operation On The USB Bus¶
Here, a person is going to do something that generates Internet traffic: insert a flash key,Copy version, control webcam, etc.
5. Kill The Cat¶
This is usually done by interrupting the guitar (Control-C).
At this point, you can try to save the results (in this example /tmp/1 file.mon.out),sent by e-mail or e-mail can be viewed with a text editor. Notice this in the initial casethat the file capacity of your best editor is not too large.
Raw Data Text Format¶
Two formats are currently supported: original and/or “1t” format and”1y” format. The “1t” component has been deprecated in kernel 2.6.21. “1y”- Format adds some positions like ISO frame interval, descriptors, etc.It creates slightly longer lines, but inOtherwise, it’s the perfect superset.in the format “1t”.
If you want to stand out throughout the program, check them out.Address message (see below), where your bus number is added in the format “1u”. If 2 pointssurprised, it’s ‘1t’ format, otherwise ‘1u’.
All data in manual format consists of moving events such as sending URBs,Reminder URB, delivery error. Each special event is a line of text, and there arewords separated by spaces. The number and position of words may depend specificallyevent type, but there is another set of words common to most types.Get the software that will fix your PC by clicking here.
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