Well, splunkd.log contains internal logs about what splunk is doing.
inputs.conf contains your list of monitored files, directories, and othe tcp/udp inputs.
As such, splunkd.log cannot contain the file itself. However it does contain information on what is going on with those inputs, for example, it logs when a file is found in a monitored path, when it gets indexed etc.
What exactly are you trying to achieve? Is it a list of all your inputs?
if so, try:
./splunk list monitor
or
./splunk cmd btool inputs list --debug
UPDATE
I didn't mention any forwarders, not sure where you got that from...
If all you want to do is see inputs.conf within splunk then add a splunk monitor stanza that contains them, like:
[monitor://<path to your splunk>/etc/.../inputs.conf]
or, you can run the above two commands and write them (pipe) to a file which you then monitor.
