A reload reads the file into a new configuration, allocated from the
defaults, and prepares its services without starting them. Only if the
whole file is read without an error does it come into force: the old
configuration's services stop accepting, the new ones start. On an
error everything prepared is dropped and the old configuration, which
never stopped, stays in force.
Each service holds its configuration until it is freed, after its last
client; a configuration no longer in force is released when the last
holder lets go (confhold/confput). freeconf() now only releases what a
configuration holds, touching nothing global.
What runs without a service of its own reads the configuration in
force, runconf, rather than conf, which a reload points at the one
being read: the resolver, which holds it while it waits (a client
resolves with its own service's), the log, the thread pool, the admin
pages, which walk the services under config_mutex, and the signal
handlers.
The users table, havelog and the resolver choice are per configuration
now, the resolver applied when the configuration comes into force, so
a refused file leaves the users as they were. The log file, the
configuration file name, the string table, daemon mode and the filter
list belong to the process and are handed from one configuration to
the next. Settings left out of a new file go back to their defaults,
where before they kept the old values.
The gap between the old and the new listening sockets remains: a
connection queued on an old service's socket when it closes is reset.
Handing the socket over is the next phase.
A test case reloads a broken file (nothing changes, alice still gets
in, bob from the refused file does not) and a good one (bob only, the
service on its new port, the old one closed, a download through the
old service finishing whole). 40 reloads, a third refused, under load
show no memory errors under AddressSanitizer.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
conf is now a pointer to the current configuration rather than the
structure itself: at first confboot, which exists before main() runs, as
plugins and the standalone services use it too; later configurations
will start from confdefaults. Both are made from confinit.h, the one list
of initial values. The timeouts are an array of the configuration
instead of a pointer to a global one. Nothing behaves differently yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
What a numbered counter counted now belongs to the process: a counter
rule points to the value of its number, created the first time the
number is met (from the counter file, if one is open) and shared by the
rules of that number in every configuration loaded. A reload no longer
resets it when there is no counter file, and once configurations can
outlive one another, clients of the old and the new one count into the
same value. An unnumbered counter, and those LdapPlugin makes, keep a
value of their own as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
conf.haveerror was only initialised and srvparam.srvfds only declared;
the extern declarations of stdlog and demon named globals that do not
exist (both are fields of conf); a local in make_ace() and one in the
webadmin XML page were never used.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
They are the state of the process, not configuration: conf.time (now
curtime), timetoexit and needreload are globals of their own. Plugins
reach needreload through a pointer added at the end of struct
pluginlink; LdapPlugin uses it. The extern for a paused global, never
defined, goes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- sockmapping rewritten from stratch to minimilse polling. poll() is now
only called if blocking is actually expected, splice pipes are now
polled if splice fails, buffers flushing is much more accurate.
- logging code moved to separate files
- signal masks added to client threads to prevent unneeded interruptions
- bandwidth limitation will not delay the thread after client or server
shutdown
