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- What is qxdm logger serial#
- What is qxdm logger update#
- What is qxdm logger android#
- What is qxdm logger software#
- What is qxdm logger code#
The size of each Kernel Log file before rotating in Megabytes The base file name to save Kernel Logs with KLog0.txt, KLog1.txt, KLog2.txt) with 0 being the newest.Įnables or disables collection of Kernel Logs
What is qxdm logger android#
The Kernel module captures kmsg data from the Android system and outputs it to a series of numbered files (i.e. For example, the ANR event for a post-loaded app would be similar to trace-.txt.Įnables or disables collection of ANR files Event data is copied directly from the Android system and saved in a file called trace.txt or some variant thereof. Tap the Settings button to edit module settings:Ĭontrols collection of data from Android's "application not responding" (ANR) events. Tap the "About" button for a list of active RxLogger modules: Of the 10 included modules, seven are enabled by default: Modules can be enabled or disabled and their parameters can be modified as needed. When a given log line is created, exactly that log_mask or read_mask array is consulted to check if the given subsystem is enabled or not.RxLogger data collection modules control the logging of individual components of an Android system. This is done by reading on the /dev/diag device and calling into process_diag_payload() which in turn calls log_update_mask() pr msg_update_mask() which updates the log_mask array.
What is qxdm logger update#
on the host PC) can configure which particular log messages he wants to receive and which not.įor the Linux programs using the libdiag.so logging service API, this means that every time an external DIAG log receiver updates the DIAG mask, that mask is passed into every program using libdiag, so they can update their log masks. Request OS signal when DCI data is receivedĪn external DIAG receiver (e.g. Get statistics about missed/succeeded logs and events, issues DIAG_IOCTL_DCI_HEALTH_STATS to /dev/diag Specify array of requested log codes, writes to /dev/diag
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Set up event streaming to the client, writes to /dev/diag Register call-backs for events and logs, writes to /dev/diag Get list of peripherals supported, issues DIAG_IOCTL_DCI_SUPPORT to /dev/diag Register a DCI client, issues DIAG_IOCTL_DCI_REG to /dev/diag You can register to certain events/masks and then receive the related information in call-backs. This seems to be about implementing a program that consumes Diag events. On the EC25, it seems only the following Linux programs use the avove API to generate logs via Diag: Shorten the length of a previously allocated bufferįree a buffer previously allocated with log_alloc()Ĭonvenience wrapper around log_alloc()/memcpy()/log_commit() This is about sending log messages via the Diag interface. Registering with Diag which gives the client a handle to the Diag. There is /usr/lib/libdiag.so.1 which is linked by virtually any Qualcomm or Quectel proprietary program running on the Linux in the Modem.ĭiag_peripheral_buffering_drain_immediateĭiag_configure_peripheral_buffering_tx_mode
What is qxdm logger code#
The Log code identifies the source/category of the logged information. Luckily the library is not performing much required functionality, so third-party programs like SnoopSnitch have managed to talk directly to the /dev/diag kernel device without needing to use that non-free library. In userspace on the Linux inside the modem, there is a (unfortunately again non-free) library called libdiag which offers some convenience API for programs to either consume DIAG or to generate/respond to DIAG received from the host/PC. The Qualcomm Android Linux kernel (usd even on the non-Android devices) implements several related kernel drivers, see Qualcomm_Kernel Furthermore, code in the Linux processor might also want to offer some DIAG information towards the external host/PC. First of all, not only the external host/PC might want to consume DIAG information, but also code on the Linux processor inside the chip. In a multi-processor situation (like the MDM9215/MDM9x07 with their Linux-running Cortex-A5), the situation becomes slightly more complex.
What is qxdm logger software#
In a single-processor Modem (with only a baseband processor) it is rather simple: Some software on the baseband processor implements the DIAG protocol, and responds to any related requests received on the DIAG port.
What is qxdm logger serial#
Later, this became a virtual serial port over USB. Initially, this transport was a dedicated serial port/UART. The general idea is that there is some physical transport medium between the chipset/modem and an external PC, and the PC can request certain diagnostic information to be sent via that physical transport. It is not publicly documented, but there are tools from Qualcomm (QPST, QXDM) as well as proprietary third-party tools and some Free Softare projects that implement parts of it. Qualcomm Diag is the qualcomm diagnostics interface built into many Qualcomm based chipsets (or rather their software) for a long time (more than a decade).