Messages in this thread |  | | | Subject | Re: Quick close of all the open files. | | From | Bernd Petrovitsch <> | | Date | Wed, 07 Jun 2006 10:50:23 +0200 |
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On Wed, 2006-06-07 at 06:52 +0530, vamsi krishna wrote: [...] > > > I checked as follows I did printf("lowest fd = %d",fileno(tmpfile())); > > > it prints 3 > > > Which proves that file descriptor 3 was closed, so tmpfile() was able to > > open it. This certainly implies that fd 0, 1, 2 (connected to stdin, > > stdout, and stderr streams of stdio) are still open, contrary to your > > statement that *all* of them are closed.
And it specifically says absolutely nothing about the file descriptors 4 and larger since open(2) always uses the lowest unused file descriptor.
> I know 0,1,2 are open (I opened it) no need to tell it specifically, > HOW DO YOU THINK I CAN PRINT SOME THING WITHOUT OPENING THIS > FILES(stdout,stderr)?
No reason to shout: The trivial solution is to syslog(3) the output like all of the daemons out there do since ages.
Bernd -- Firmix Software GmbH http://www.firmix.at/ mobil: +43 664 4416156 fax: +43 1 7890849-55 Embedded Linux Development and Services
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