On Fr, 19.07.24 16:11, Carl Lei (me@xxxxxxxxxxxx) wrote: > Hi all, > > Short version of my question is, my program connects to > /run/systemd/journal/stdout and dup2 to stderr; this socket needs that > 7-line preamble to actually work. But this seems a hidden internal > thing, so I wonder will this be kept stable? And, does stdout and > stderr have to be different connections? They do not. We can certainly make the protocol stable (or at least a subset of it), i.e. prep a patch that adds it to the api guarantee document linked elsewhere in the thread. Lennart -- Lennart Poettering, Berlin