Writing to disk from CoreAudio HAL Plugin

Question

Created Mar ’20

Replies 3

Boosts 0

Views 2.3k

Participants 4

I'm writing an audio HAL plugin to send the audio over the network to a device. I can get audio and stream it over a socket just fine but wanted to log debug messages to a file rather than syslog. However, when I try to open a file from within the HAL plugin, I get "Operation not permitted".

I tried writing to

/tmp

as well as to the temporary directory returned by

NSTemporaryDirectory()

. None of these worked. It seems that the HAL plugin is sandboxed without disk access and I don't know how to provide those permissions as the plugin is run under coreaudio process.

Anyone have any experience with writing to disk from an Audio HAL Plugin?

Boost

Answer 1

kostyan5 OP

Nov ’20

Can anyone from Apple comment on this? Is this not possible?

0

Answer 2

DTS Engineer OP

Apple

Nov ’20

What kind of plugin, exactly? Is this an AudioServerPlugIn?

0

Answer 3

Deepa Pai OP

Jan ’24

I too have same question. Is it possible to wrote to a file from AudioServerPlugin? If Yes, to which disk path we can write?

0