Starting with OpenBSD 6.7 regular users cannot access raw audio devices
anymore, for improved security.
Instead use the sioctl_open(3) API to access and manipulate audio
controls exposed by sndiod(8). On the first call a permanent connection
is established with the running sndiod daemon, and call-back functions
are registered which are triggered when audio controls are changed
(e.g., a USB headset is attached) or when the volume is modified. On
subsequent calls we poll for changes; if there are no volume changes
this costs virtually nothing.
Joint work with Alexandre Ratchov
On OpenBSD although the formula is correct due to integer division a
temperature of for example 54 celsius appears as 5. this patch first
treats it as a floating point op before retaining the non decimal digits
This drops a lot of code and even though we are using a common function,
the specification of only the needed things keeps it very efficient and
even more efficient in memory and time than the previous solution.
On OpenBSD the backlight percentage cannot be retrieved in a simple way.
The only two solutions we are aware of for now are:
- reading from /dev/ttyC0: which isn't possible without changing
permissions or running slstatus as root
- linking against xcb-xrandr: which is bloat and does not work in every
case appearently
This reverts commit 37724ac2c3 for now.
- Get rid of camel-casing
- Don't use all-caps for variable names
- use LEN()-macro
- use strncmp() rather than strstr() for prefix-checking
- clean up the tokenizer-loop and don't use copies
- make the loop more readable by separating different breaking
conditions
- stricter error-checking and cleanup
- store the layout directly with bprintf rather than having
a separate buffer
Adding a new keymap component that will
indicate the current keyboard layout (language)
and variant if any was set. I use the
standard X11 XKB APIs to retrieve and parse
the xkb_symbols set with setxkbmap.
