tree 4e27e3ac4bdb5720af211b1747a63614744eb801
parent b53049e86f90a7d0bbe2044922f1a50fe47ad548
author Willy Tu <wltu@google.com> 1659396226 +0000
committer Willy Tu <wltu@google.com> 1660028023 +0000

dbus-sdr: Fixed race condition in fruRead

Return the actual fru data in getFru and not rely on the fruCach
wherever possible to make sure the the fru data is still avaliable even
if the fruCache get's updated.

Added writeFru to take in a fru vector to make sure that the fruWrite
with ipmi handler don't use the cache directly. Only use the fruCache in
writeFruIfRunning.

Tested:
Ran the two while loops in different terminal and check the size
written.
```
while [ true ]
do
   ipmitool fru read 27 /tmp/fru27.bin
done

while [ true ]
do
   ipmitool fru read 95 /tmp/fru95.bin
done
```

No issue of running into the race condition issue of the fru being
cleared and writing Fru Size of 0.

FruWrite seems to still work.

Signed-off-by: Willy Tu <wltu@google.com>
Change-Id: I48704fef362e4fbdf0c39e545c63872002534cdb