App Shield Samples

App Shield Samples (PDF)

NVIDIA DOCA App Shield Sample Guide

This document provides DOCA App Shield library sample implementations on top of NVIDIA® BlueField® DPU.

DOCA App Shield is a library for monitoring the host and authenticating the integrity of core processes.

For more information about DOCA App Shield library, refer to NVIDIA DOCA App Shield Programming Guide.

The library requires a minimum DPU firmware version of 24.32.1010.

Make sure to follow the stages of the library prerequisites detailed in NVIDIA DOCA App Shield Programming Guide to make sure the library could be used by the samples.


4.1. Libs Get

This sample illustrates how to properly initialize DOCA App Shield and use its API to get the list of loadable libraries of a specific process. The sample logic includes:

  1. Opening DOCA device with DMA ability.
  2. Creating DOCA Apsh context.
  3. Setting and starting the Apsh context.
  4. Opening DOCA remote PCI device via given vendor unique identifier (VUID).
  5. Creating DOCA Apsh system handler.
  6. Setting fields and starting Apsh system handler.
  7. Getting the list of system process using Apsh API and searching for a specific process with the given PID.
  8. Geting the list of process-loadable libraries using doca_apsh_libs_get Apsh API call.
  9. Querying the libraries for 3 selected fields using doca_apsh_lib_info_get Apsh API call.
  10. Printing libraries' attributes to the terminal.
  11. Cleaning up.

References:

  • /opt/mellanox/doca/samples/doca_apsh/libs_get/libs_get.c
  • /opt/mellanox/doca/samples/doca_apsh/apsh_common.c; /opt/mellanox/doca/samples/doca_apsh/apsh_common.h

4.2. Modules Get

This sample illustrates how to properly initialize DOCA App Shield and use its API to get the list of installed modules on a monitored system. The sample logic includes:

  1. Opening DOCA device with DMA ability.
  2. Creating DOCA Apsh context.
  3. Setting and starting the Apsh context.
  4. Opening DOCA remote PCI device via given VUID.
  5. Creating DOCA Apsh system handler.
  6. Setting fields and start Apsh system handler.
  7. Getting the the list of system-installed modules using doca_apsh_modules_get Apsh API call.
  8. Querying the names of modules using doca_apsh_module_info_get Apsh API call.
  9. Printing the attributes of up to 5 moduless attributes to the terminal.
  10. Cleaning up.

References:

  • /opt/mellanox/doca/samples/doca_apsh/modules_get/modules_get.c
  • /opt/mellanox/doca/samples/doca_apsh/apsh_common.c; /opt/mellanox/doca/samples/doca_apsh/apsh_common.h

4.3. Pslist

This sample illustrates how to properly initialize DOCA App Shield and use its API to get the list of running processes on a monitored system. The sample logic includes:

  1. Opening DOCA device with DMA ability.
  2. Creating DOCA Apsh context.
  3. Setting and starting the Apsh context.
  4. Opening DOCA remote PCI device via given VUID.
  5. Creating DOCA Apsh system handler.
  6. Setting fields and starting Apsh system handler.
  7. Getting the list of processes running on the system using doca_apsh_processes_get Apsh API call.
  8. Querying the processes for 4 chosen attributes using doca_apsh_proc_info_get Apsh API call.
  9. Printing the attributes of up to 5 processes to the terminal.
  10. Cleaning up.

References:

  • /opt/mellanox/doca/samples/doca_apsh/pslist/pslist.c
  • /opt/mellanox/doca/samples/doca_apsh/apsh_common.c; /opt/mellanox/doca/samples/doca_apsh/apsh_common.h

4.4. Threads Get

This sample illustrates how to properly initialize DOCA App Shield and use its API to get the list of threads of a specific process. The sample logic includes:

  1. Opening DOCA device with DMA ability.
  2. Creating DOCA Apsh context.
  3. Setting and starting the Apsh context.
  4. Opening DOCA remote PCI device via given VUID.
  5. Creating DOCA Apsh system handler.
  6. Setting fields and starting Apsh system handler.
  7. Getting the list of system processes using Apsh API and searching for a specific process with the given PID.
  8. Getting the list of process threads using doca_apsh_threads_get Apsh API call.
  9. Querying the threads for up to 3 selected fields using doca_apsh_thread_info_get Apsh API call.
  10. Printing thread attributes to the terminal.
  11. Cleaning up.

References:

  • /opt/mellanox/doca/samples/doca_apsh/threads_get/threads_get.c
  • /opt/mellanox/doca/samples/doca_apsh/apsh_common.c; /opt/mellanox/doca/samples/doca_apsh/apsh_common.h

4.5. Vads Get

This sample illustrates how to properly initialize DOCA App Shield and use its API to get the list of virtual address descriptors (VADs) of a specific process. The sample logic includes:

  1. Opening DOCA device with DMA ability.
  2. Creating DOCA Apsh context.
  3. Setting and start the Apsh context.
  4. Opening DOCA remote PCI device via given VUID.
  5. Creating DOCA Apsh system handler.
  6. Setting fields and starting Apsh system handler.
  7. Getting the list of system processes using Apsh API and searching for a specific process with the given PID.
  8. Getting the list of process VADs using doca_apsh_vads_get Apsh API call.
  9. Querying the VADs for 3 selected fields using doca_apsh_vad_info_get Apsh API call.
  10. Printing the attributes of up to 5 VADs to the terminal.
  11. Cleaning up.

References:

  • /opt/mellanox/doca/samples/doca_apsh/vads_get/vads_get.c
  • /opt/mellanox/doca/samples/doca_apsh/apsh_common.c; /opt/mellanox/doca/samples/doca_apsh/apsh_common.h

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