/dev/usr cfg
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/dev/usr_cfg is the IOSU device node for managing configuration entries.
List of functions (Ioctl/Ioctlv)
| Command | Description |
|---|---|
| 0x30 | ReadSysConfig |
| 0x31 | WriteSysConfig |
| 0x32 | DeleteSysConfig |
| 0x33 | QuerySysConfig |
| 0x34 | ListSysConfig |
Wii2Cafe
On IOS_RESUME messages, usr_cfg checks if the "wii_acct.internal.reflection" flag is 1 and starts "W2C-reflection" if it is.
W2C will parse a copy, which is made on boot by the MCP, of the Wii SYSCONF file. It imports paired Bluetooth devices, rumble configuration and WiiMote speaker volume levels and stores them for the Wii U mode.
After all configuration values have been imported it clears the "reflection" flag.