Should a UNIX daemon process close open fds? Post: 30570

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Top Forums UNIX for Dummies Questions & Answers Should a UNIX daemon process close open fds? Post 30570 by kunalashar on Thursday 24th of October 2002 01:30:30 AM

10-24-2002

Registered User

Should a UNIX daemon process close open fds?

I have a UNIX daemon process that's been started by a parent process, an application server.
The behavior of this daemon process is to inherit and use the app
server's file descriptors (ports/sockets).
When I shutdown the app server, the daemon continues to run, because there may be other applications that want to use it.
However, the app server won't restart, because the daemon process is holding its parents' ports.
There is a debate as to whether its the app server's or the daemon's responsibility to close the file descriptors (say, using fcntl(...)).
Which process has the responsibility of closing the open file
descriptors?
Richard Steven, in his Advanced Unix programming book says that the daemon should do it, but the people who created the daemon say the Posix way is better.
Any takers?
Thanks in advance,
Kunal

kunalashar

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mlclient

MLCLIENT(1)						      General Commands Manual						       MLCLIENT(1)

NAME

       mlclient - client for mlterm

SYNOPSIS

       mlclient [options]

DESCRIPTION

       mlclient  is a client for the mlterm(1) server (daemon).  mlterm(1), an X terminal emulator, can be invoked as a daemon process which holds
       multiple sessions (shell process and other informations like backlog).  mlclient can creat a new session  or  recall  an  existing  session
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OPTIONS

       mlclient accepts most options of mlterm.  Please read mlterm(1) for detail.

       Following options do not work for mlclient:

       -K/--maxptys,

       -P/--ptys,

       -R/--fsrange,

       -W/--sep,

       -Y/--decsp,

       -c/--cp932,

       -i/--xim, and

       -j/--daemon

       Following option is mlclient specific:

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SEE ALSO

       mlterm(1), locale(7), charsets(7), UTF-8(7), and X(7).

CONTACT

       Subscribe mlterm-dev-en ML (http://lists.sourceforge.net/lists/listinfo/mlterm-dev-en).

								    2004-10-24							       MLCLIENT(1)

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