NEWSFEEDS

Newsfeeds file entries should look like this:
    host.name.of.site[/exclude,exclude,...]\
            :pattern,pattern...[/distribution,distribution...]\
            :Tf,Wnm
            :
or
    sitename[/exclude,exclude,...]\
            :pattern,pattern...[/distribution,distribution...]\
            :Tf,Wnm
            :host.name.of.site


FILES

Four files full of
   token messageid
or might be blanked out
   <spc><spc><spc><spc>....

F site.name                 main feed file
                               opened/created, then written, by innd
                               read by duct
                               unlinked by duct
                               tokens blanked out by duct when processed
  site.name_lock            lock preventing multiple ducts
                               to hold lock must open,F_SETLK[W]
                                 and then stat to check that locked file
                                 still has name site.name_lock
                               holder of this lock is "duct"
                               (only) lockholder may remove the lockfile
D site.name_flushing        temporary feed file during flush (or crash)
                               hardlink created by duct
                               unlinked by duct
  site.name_defer           431'd articles, still being written,
                               created, written, used by duct

  site.name_backlog.<date>.<inum>
                            431'd articles, ready for innxmit or duct
                               created (link/mv) by duct
  site.name_backlog<anything-else>  (where <anything-else> does not
                                     contain '#' or '~') eg
  site.name_backlog.manual
                            anything the sysadmin likes (eg, feed files
                            from old feeds to be merged into this one)
                               created (link/mv) by admin
                               may be symlinks (in which case links
                               may be written through, but only links
                               will be removed.

                            It is safe to remove backlog files manually,
                            if it's desired to throw away the backlog.

Backlog files are also processed by innduct.  We find the oldest
backlog file which is at least a certain amount old, and feed it
back into our processing.  When every article in it has been read
and processed, we unlink it and look for another backlog file.

If we don't have a backlog file that we're reading, we close the
defer file that we're writing and make it into a backlog file at
the first convenient opportunity.