Re: [systemd-devel] help with systemd socket file for programs in the quagga suite

2014-10-22 Thread Lennart Poettering
On Sat, 13.09.14 23:04, Andrei Borzenkov (arvidj...@gmail.com) wrote:

 В Fri, 12 Sep 2014 19:10:01 +0100
 lux-integ lux-in...@btconnect.com пишет:
 
  On Friday 12 September 2014 18:28:30 Dave Reisner wrote:
   I'll stop you here. You can't simply synthesize a socket unit for any
   arbitrary program that uses a socket (regardless of the address family).
   Socket units are specific to socket-activated services (which requires
   code changes in the daemon itself) and per-connection spawning.
   
   Based on a perusal of the manpage and source, Zebra appears to be
   neither of these
  
  
  thanks a lot
  
  I too checked the man page  I found on the internet  and found them to be 
  different to doing 
  /usr/sbin/zebra --help
  
  I  tend to err on the side of trusting the installed more   and so 
   why does   this line :-
  ( -z, --socket   Set path of zebra socket )
  results from 
  /usr/sbin/zebra  --help
  ( and indeed all the programs in the quagga suite ? )
  
  Is it in error ?
  
 
 May be not, but socket activated services in systemd receive socket on
 stdin/stdout, not as argument.

That's not entirely true. In inetd-style activation the sockets are
passed as stdin/stdout. On systemd-style activation they are passed as
sockets 3,4,5,..., i.e. the ones immediately following
stdin/stderr/stdout.

But anyway, the gist of it is true: socket activation requires proper
support for it in the daemons. And just being able to set the socket
path is not enough. Without patching zebra to support proper
systemd-style socket activation (or even inetd-style as we support
either) this is not available.

Lennart

-- 
Lennart Poettering, Red Hat
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Re: [systemd-devel] help with systemd socket file for programs in the quagga suite

2014-09-13 Thread Andrei Borzenkov
В Fri, 12 Sep 2014 19:10:01 +0100
lux-integ lux-in...@btconnect.com пишет:

 On Friday 12 September 2014 18:28:30 Dave Reisner wrote:
  I'll stop you here. You can't simply synthesize a socket unit for any
  arbitrary program that uses a socket (regardless of the address family).
  Socket units are specific to socket-activated services (which requires
  code changes in the daemon itself) and per-connection spawning.
  
  Based on a perusal of the manpage and source, Zebra appears to be
  neither of these
 
 
 thanks a lot
 
 I too checked the man page  I found on the internet  and found them to be 
 different to doing 
 /usr/sbin/zebra --help
 
 I  tend to err on the side of trusting the installed more   and so 
  why does   this line :-
 ( -z, --socket   Set path of zebra socket )
 results from 
 /usr/sbin/zebra  --help
 ( and indeed all the programs in the quagga suite ? )
 
 Is it in error ?
 

May be not, but socket activated services in systemd receive socket on
stdin/stdout, not as argument.

 thanks in advance
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Re: [systemd-devel] help with systemd socket file for programs in the quagga suite

2014-09-12 Thread Dave Reisner
On Fri, Sep 12, 2014 at 06:15:32PM +0100, lux-integ wrote:
 Greetings,
 
 I am attempting to learn how to use systemd.  I decided to try synthesising a 
 'socket file'

I'll stop you here. You can't simply synthesize a socket unit for any
arbitrary program that uses a socket (regardless of the address family).
Socket units are specific to socket-activated services (which requires
code changes in the daemon itself) and per-connection spawning.

Based on a perusal of the manpage and source, Zebra appears to be
neither of these. So, you shouldn't be writing a socket unit for this
service.

Cheers,
d
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Re: [systemd-devel] help with systemd socket file for programs in the quagga suite

2014-09-12 Thread lux-integ
On Friday 12 September 2014 18:28:30 Dave Reisner wrote:
 I'll stop you here. You can't simply synthesize a socket unit for any
 arbitrary program that uses a socket (regardless of the address family).
 Socket units are specific to socket-activated services (which requires
 code changes in the daemon itself) and per-connection spawning.
 
 Based on a perusal of the manpage and source, Zebra appears to be
 neither of these


thanks a lot

I too checked the man page  I found on the internet  and found them to be 
different to doing 
/usr/sbin/zebra --help

I  tend to err on the side of trusting the installed more   and so 
 why does   this line :-
( -z, --socket   Set path of zebra socket )
results from 
/usr/sbin/zebra  --help
( and indeed all the programs in the quagga suite ? )

Is it in error ?

thanks in advance
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