Hi Pritish, not a dumb question! Delete is meant to happen if you pass NULL as the value. When reading the config back, seeing NULL means that value was deleted. I.e. the ‘workaround' is exactly how your config handler should behave :)
Alas, I was meant to write documentation about this, but never ended up finishing it. > On Apr 14, 2017, at 9:24 AM, Pritish Gandhi <[email protected]> wrote: > > Hi All, > Probably a dumb question, but is there a way to delete or remove config > name-value pairs from config? > I'm using conf_save_one() to save single name-value pairs to config. But I > couldn't find a similar function to remove them. I wonder whether, since > I'm using the append only fcb system, I would have to write another special > name-value pair to mark it deleted. I would've assumed config_fcb to handle > that for me. > > I also noticed that conf_save_one() retains the old value if I save a > STRING name-value pair with the strlen(value) == 0. The way I'm working > around this is to set the value string to "(null)" and when I read a > "(null)" from the config system I just memset my string to 0x0s. > > Comments on these are much appreciated. > Thanks, > Pritish
