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gerrit.openbmc.org / openbmc / phosphor-hwmon / d46d081895ada3ab411996dc3a681f796f4a0926
commitd46d081895ada3ab411996dc3a681f796f4a0926[log] [tgz]
authorAnton D. Kachalov <gmouse@google.com>Wed Feb 03 23:25:37 2021 +0100
committerAnton D. Kachalov <gmouse@google.com>Fri May 07 00:30:03 2021 +0200
treefc6e6f13af0b8da88fcd22f3edbce35fc252cdd1
parent5b520cf494ad65be2d336f60ee622efc456c2e3f [diff]
Add sensor instance id command line argument.

Introduce `-i|--sensor-id` flag to explicitly set sensor
suffix for dbus name.

Sample usage:

   phosphor-hwmon-readd -i test_sensor_id -o /apb/...

Will register the service with the following busname:

   xyz.openbmc_project.Hwmon-test_sensor_id.Hwmon1

This change required as a part of privilege separation work:
  https://github.com/openbmc/openbmc/issues/3383

Signed-off-by: Anton D. Kachalov <gmouse@google.com>
Change-Id: I48ff9c3efe0edb84718ff8f695e7e932af5445de
5 files changed
tree: fc6e6f13af0b8da88fcd22f3edbce35fc252cdd1
  1. msl/
  2. subprojects/
  3. test/
  4. tools/
  5. .clang-format
  6. .gitignore
  7. .lcovrc
  8. .shellcheck
  9. 70-hwmon.rules
  10. 70-iio.rules
  11. average.cpp
  12. average.hpp
  13. env.cpp
  14. env.hpp
  15. fan_pwm.cpp
  16. fan_pwm.hpp
  17. fan_speed.cpp
  18. fan_speed.hpp
  19. gpio_handle.cpp
  20. gpio_handle.hpp
  21. hwmon.cpp
  22. hwmon.hpp
  23. hwmonio.cpp
  24. hwmonio.hpp
  25. interface.hpp
  26. LICENSE
  27. mainloop.cpp
  28. mainloop.hpp
  29. MAINTAINERS
  30. meson.build
  31. meson_options.txt
  32. phosphor-hwmon.conf
  33. readd.cpp
  34. README.iio.md
  35. README.md
  36. sensor.cpp
  37. sensor.hpp
  38. sensorset.cpp
  39. sensorset.hpp
  40. start_hwmon.sh
  41. sysfs.cpp
  42. sysfs.hpp
  43. targets.hpp
  44. thresholds.hpp
  45. types.hpp
  46. util.hpp
  47. xyz.openbmc_project.Hwmon@.service
README.md

Exposes generic hwmon entries as DBus objects. More information can be found at Sensor Architecture

To Build

To build this package, do the following steps:

    1. meson build
    2. ninja -C build

To clean the repository run `rm -rf build`.

D-Bus bus names

To enable the use of Linux features like cgroups prioritization and
udev/systemd control, one instance of phosphor-hwmon is intended to
be run per hwmon sysfs class instance.

This requires an algorithm for selecting a stable, well-known D-Bus busname.

The algorithm is <PREFIX>-<ID>.Hwmon<N> where PREFIX is an autoconf
configurable prefix (BUSNAME_PREFIX, xyz.openbmc_project by default),
ID is either a std::hash of the /sys/devices path backing the hwmon class
instance or provided suffix value from the command line, and N is
the implemented phosphor-hwmon D-Bus API version.