-* Prevent PROCESS services from being starts-on-console without also being runs-on-console.
-
-* shutdown command presently hangs if terminal output blocked (scroll lock
- via ^S). Should use a buffer as dinit does, and pipe output from subcommands
- via the buffer too.
-
-* Document utilities (particularly dinitctl) in the README
+For version 0.8.0:
+------------------
+* provide a way to check configuration for errors (dinitcheck command) [DONE]
+* Easy way to reload service description (including if service is running, where possible).
+* report process launch failure reason (stage & errno) via dinitctl.
+* "chain-to" can result in an unbreakable loop if the chain is circular. Chained services should not be
+ started during shutdown to prevent this (also avoids a race condition where the chained service is left
+ running when everything else has shutdown).
+* Show "activated" state in "dinitctl list" output
+For version 0.9.+:
+------------------
+* Service description sanity checks:
+ - Service type not specified
+ - maybe default to 'internal' if command not specified
+ - service command not specified
+ - errors should also be reported by dinitcheck
For version 1.0:
----------------
-* Man pages for all programs (done for dinit, not for dinitctl/shutdown/etc).
-* Write wtmp entry on startup (see simpleinit)
-* Allow running services as a different UID
+* Service description parse errors should report line number
+* dinitcheck should perform lint checks - do named files exist? etc
+* Limit memory use by control connections. Currently clients can queue commands without limit.
+* Consider using mlockall (if system process).
+* Dinitctl command to get full status of a service.
* "triggered" service type: external process notifies Dinit when the service
- has started.
-* Ability to reload stopped services (reload service description)
-* Some way to specify environment (perhaps a common environment for all
- processes)
-* Load services from several different directories, with an order of precedence,
- to allow for packaged service descriptions and user-modified service
- descriptions.
+ has started. (maybe?)
+ - key thing is we want some way to eg mount filesystem once the disk comes up,
+ configure network when device comes up, etc, potentially relying an an external
+ tool/daemon.
+* on shutdown, after repeated intervals with no activity, display information
+ about services we are waiting on (or, do this when prompted via ^C or C-A-D).
+* Documentation must be complete (see section below).
+* Proper support for socket activation?
+* Chaining of service process input/output?
+* Be able to boot and shutdown Linux and FreeBSD (or OpenBSD).
For later:
----------
system initialisations that can't or shouldn't really be "undone" and so do
not need to be re-done).
* Internationalisation
-* More logging options. Can currently log to syslog only (well, with the
- syslog protocol, to /dev/log). Possibly should be able to log directly
- to a file, or input stream of another process.
* A service can prevent shutdown/reboot by failing to stop. Maybe make
multiple CTRL-ALT-DEL presses (or ^C since that's more portable) commence
immediate shutdown (or launch a simple control interface).
-* Interruptible scripted services - where it's ok to terminate the start
- script with a signal (and return the service to the STOPPED state). So a long-
- running filesystem check, for instance, need not hold up shutdown.
* When we take down a service or tty session, it would be ideal if we could kill
the whole process tree, not just the leader process (need cgroups or pid
namespace or other mechanism).
-* Investigate using cn_proc netlink connector (cn_proc.h) to receive process
- termination events even when running with PID != 1 (Linux only).
- Also, there is the possibility of having a small, simple PID-1 init which
- sends terminated process IDs over a pipe to Dinit. Finally, it may be possible
- to run dinit (and subprocesses) in a new PID namespace (again linux-only).
* Allow logging tasks to memory (growing or circular buffer) and later
switching to disk logging (allows for filesystem mounted readonly on boot).
But perhaps this really the responsibility of another daemon.
* Allow running services with different resource limits, chroot, cgroups,
namespaces (pid/fs/uid), etc
-* Make default control socket location build-time configurable
-* Allow specifying a timeout for killing services; if they don't die within
- the timeout (after a TERM) then hit them with a KILL.
-* A (perhaps limited) way(s) to modify a service description after it is loaded -
- eg add/remove dependencies, change properties.
-* Think about detecting runs-on-console dependency conflicts (i.e. if A runs-on-console and
- B depends on A and runs-on-consle then B can never start).
+* Support chaining service output to another process (logger) input; if the
+ service dies the file descriptor of its stdout isn't closed and is reassigned
+ when the service is restarted, so that minimal output is lost.
+ - even more, it would be nice if a single logger process could be responsible
+ for receiving output from multiple services. This would require some kind of
+ protocol for passing new output descriptors to the logger (for when a
+ service starts).
Even later / Maybe never:
+-------------------------
* Support recognising /etc/init.d services automatically (as script services, with
no dependency management - or upstart compatible dependency management)
Also BSD's rc.d style scripts (PROVIDE, REQUIRE).
Documentation:
+--------------
* Design philosophy/rationale document
-* Coding style guidelines
-
-* What's the best TERM setting? gogetty gives me "linux" but I think other variants may be
- better (eg "linux-c").
-
-* Figure out the ConsoleKit/logind / PolicyKit mess & how dinit needs to fit into it.
- * Consolekit/logind tracks "sessions". Provides a mechanism to mark a session starting,
- associates processes with sessions, provides calls to terminate sessions etc (why?!!)
- Can use environment variable or cgroups to track processes in a session.
- A PAM module exists to create/destroy sessions.
- * Consolekit/logind also allows for requesting shutdown, reboot, and inhibiting reboot
- (via dbus API).
- * "seats" are a set of input/output hardware (mouse/keyboard/monitor) on which a session
- can be run. You can have multiple sessions on a seat - one is in the foreground
- (eg linux virtual ttys implement multiple sessions on a single seat).
- Sessions can run without a seat (eg ssh session).
+* More system integration documentation?
projects / oweals / dinit.git / blobdiff