93 lines
4.5 KiB
Plaintext
93 lines
4.5 KiB
Plaintext
#Documentation de fcron Fcron: how and why? Release notes: fcron 3.2.0
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Thanks
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Copyright © 2000-2014 Thibault Godouet Fcron 3.2.0 Web page :
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http://fcron.free.fr
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_______________________________________________________________________
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Documentation de fcron
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Prev Chapter 1. Fcron: how and why? Next
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_______________________________________________________________________
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1.5. Todo
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Here are some things that should be done ... Note that some of these
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entries are just some ideas, which may be done in the long run.
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If you see something you'd really like to see implemented here, feel
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free to send me a mail: it may make me move it to the top of my to-do
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list ;) .
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If you plan to help me, please send a mail at <fcron@free.fr> to
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prevent two people from doing the same thing. You can send me some
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propositions as well, or ask me to move something to the top of the
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heap ;) .
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1.5.1. High priority
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* test the fix for empty mails on non linux systems (solaris seems
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ok, feedback on BSD?) (starting from fcron 2.9.7 -- no complain so
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far, so fixed?)
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* bug fix: what happens if the grand-child cannot be forked or cannot
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run the job in job.c? + better loop to read/write the pid of
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grand-child from/by the child (fcron freezes if the filesystem on
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which it operates has no space left? (cannot reproduce it on my
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linux system)
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* set TZ env. var. for jobs for which option tz is used.
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1.5.2. Low priority
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* code cleaning: create a .c/.h file for data structures (file/line
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lists, serial queue, lavg list, exe list), and work with them only
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through functions/macros. + secure equivalent to
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str[n]{cat|copy|...}
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Note: may introduce bugs, so it will be done in fcron 3.1.x, and
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needs to be tested thoroughly..
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* Mem footprint reduction: use an/some union(s) in CL struct.
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* For environment settings, make a var substitution.
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* add a return code for jobs which would mean that they should not be
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run again (in case of an error, etc...).
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* Use directory notifications (FAM), and support a fcrontab and a
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cron.d as Vixie cron does (directly included in fcron itself, not
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thanks to a script as now).
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* PAM support (included in fcron, but needs more tests by people
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using PAM - not implemented in fcrondyn: is it needed in fcrondyn
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anyway?)
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* support for per user serial queue (especially for root)
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* use readline (if available) for fcrondyn.
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* add a mailsubject option, for custom mail subjects (for instance,
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in case of a job containing something secret -- password, etc -- in
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the command line).
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1.5.3. Ideas
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* add a system of modules: at startup, fcron loads some modules (.so
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files). Then, when fcron should run the job, it calls a function of
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the module, and let it manage the job (threads?). (do linux
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dlopen(), etc exist on other systems? - yes: thanks Harring ;)
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dlopen exists on all POSIX system - even windoze - abait it does
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not use the same insterface of function calls. But it can be easily
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implemented to port to another system.).
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* (related to the system of modules? create a kind of dependencies?)
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Add a way to run a job only if a command returns true. It would
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permit, for instance, to run some jobs on a laptop only if it is on
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AC power.
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and depending on the return value of the command, cancel the
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execution, or wait x seconds before trying again, etc. In this
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case, needs change the way the jobs are queued?
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* add an option/module to prevent fcron from running a job if the
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system is running on battery (anacron does it?)
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* Add a way to stop a job (SIGSTOP) if the lavg gets to high, and
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restart it (SIGCONT) when the lavg has decreased.
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* Add a timeout for task completion: if a task takes more than a
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specified timeout, then start another script with the initial task
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PID as argument. That would allow a kill with different signals
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(-HUP, -TERM -STOP, .... or any other action like sending a mail to
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sysadmin to alert him/her that a task is taking too much time and
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that he has to have a look at it.) (add an option to specify the
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cmd, and combine w/ option until)
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_______________________________________________________________________
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Release notes: fcron 3.2.0 Up Thanks
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