tree 10931ca7a9248b5ed26ab173ab27aef0d883f401
parent 93a4c0abee7839f794aa8375c7c62f2204895577
author Brandon Kim <brandonkim@google.com> 1724104836 +0000
committer Brandon Kim <brandonkim@google.com> 1724453198 +0000

bios_setting: Add a write handler

Tested:
```
// Test that it writes a new file if it doesn't exist
~# rm /run/oem_bios_setting

// Invalid command (no size / payload)
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x19
Unable to send RAW command (channel=0x0 netfn=0x2e lun=0x0 cmd=0x32 rsp=0xc7): Request data length invalid

// Invalid command (size doesn't match)
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x19 0x01 0x30 0x31
Unable to send RAW command (channel=0x0 netfn=0x2e lun=0x0 cmd=0x32 rsp=0xc7): Request data length invalid

// Command success
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x19 0x02 0x30 0x31
 79 2b 00 19 02

// Read back
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x18
 79 2b 00 18 02 30 31
~# cat /run/oem_bios_setting
01~#

// Verify overwrite works (truncates the previous bytes)
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x19 0x01 0x33
 79 2b 00 19 01
~# cat /run/oem_bios_setting
3~#
~# ipmitool raw 0x2e 0x32 0x79 0x2b 0x00 0x18
 79 2b 00 18 01 33
```

Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: I84db782da9b2f121c0a81a855692b5ca25ffda54