COSCUP x RubyConf TW 2021

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Exploring Your Apple M1 devices with Open Source Tools

Abstract

This talk will be an updated and extended MacOS M1 version of my previous talk on getting iDevice thermal sensors [1]. Since a macOS device comes with root already, getting non-trivial information on M1 devices is much easier than on A14 devices. I'll talk about:

  1. thermal sensors on without root [2]
  2. further thermal sensors you can get with root and SIP disabled, such as [3]
  3. how get similar information by using IOKit functions [4]

[1] https://www.slideshare.net/kstan2/exploring-thermal-related-stuff-in-idevices-using-opensource-tool

[2] https://github.com/freedomtan/sensors, https://github.com/freedomtan/sensors_cmdline

[3] https://github.com/freedomtan/m1_smc_senors

[4] https://developer.apple.com/documentation/iokit/iokit_functions

English Abstract

This talk will be an updated and extended MacOS M1 version of my previous talk on getting iDevice thermal sensors [1]. Since a macOS device comes with root already, getting non-trivial information on M1 devices is much easier than on A14 devices. I'll talk about:

  1. thermal sensors on without root [2]
  2. further thermal sensors you can get with root and SIP disabled, such as [3]
  3. how get similar information by using IOKit functions [4]

[1] https://www.slideshare.net/kstan2/exploring-thermal-related-stuff-in-idevices-using-opensource-tool

[2] https://github.com/freedomtan/sensors, https://github.com/freedomtan/sensors_cmdline

[3] https://github.com/freedomtan/m1_smc_senors

[4] https://developer.apple.com/documentation/iokit/iokit_functions

Koan-Sin Tan