[alsa-devel] ioctl(fd, SNDRV_CTL_IOCTL_ELEM_REPLACE, ... not working from userspace ?

Hi,

I try to rename existing sound control from userspace. The goal is to create a generic abstraction layer for AutomotiveGradeLinux audio server

While I found two hidden methods to access to low level functionalities from user space, non of them seems to accecp replace call.

I isolated the code in two basic samples https://github.com/fulup-bzh/alsa-ctl-replace

- First one uses a directt IOTCL model

- Second one leverage private sndctl control handle.

Any idea would be more than welcome.

Fulup