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Full Discussion: File Descriptor to File Name
Top Forums UNIX for Dummies Questions & Answers File Descriptor to File Name Post 93247 by lskuff on Friday 16th of December 2005 03:26:58 PM
Old 12-16-2005
well I am making a dynamically linked library that adds a file system layer that adds some error check abilities... it interposes on all important file system related calls... I know that I have the name of the file in open, but a whole lot of file might be opened before any is read. When the file is read I only have the fd.... In the read() I want to open (if it exists) or create another file with the same name and just a different extension.

I guess from what you guys said the only way to do this is to create my own file table which is like a (very) large string array with each element = the file name and each index corresponding to a fd.

If this is the case I think I will just stick to my i-node naming because that has too much memory overhead. Thanks
 

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LEARN ABOUT SUSE

file::spec::functions

File::Spec::Functions(3pm)				 Perl Programmers Reference Guide				File::Spec::Functions(3pm)

NAME

       File::Spec::Functions - portably perform operations on file names

SYNOPSIS

	       use File::Spec::Functions;
	       $x = catfile('a','b');

DESCRIPTION

       This module exports convenience functions for all of the class methods provided by File::Spec.

       For a reference of available functions, please consult File::Spec::Unix, which contains the entire set, and which is inherited by the
       modules for other platforms. For further information, please see File::Spec::Mac, File::Spec::OS2, File::Spec::Win32, or File::Spec::VMS.

   Exports
       The following functions are exported by default.

	       canonpath
	       catdir
	       catfile
	       curdir
	       rootdir
	       updir
	       no_upwards
	       file_name_is_absolute
	       path

       The following functions are exported only by request.

	       devnull
	       tmpdir
	       splitpath
	       splitdir
	       catpath
	       abs2rel
	       rel2abs
	       case_tolerant

       All the functions may be imported using the ":ALL" tag.

COPYRIGHT

       Copyright (c) 2004 by the Perl 5 Porters.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       File::Spec, File::Spec::Unix, File::Spec::Mac, File::Spec::OS2, File::Spec::Win32, File::Spec::VMS, ExtUtils::MakeMaker

perl v5.12.1							    2010-04-26						File::Spec::Functions(3pm)
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