Re: FileInputStream.skip() is broken in Linux (32-bit) on large files

From:

"Andrew Thompson" <u32984@uwe>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 12 Sep 2007 04:30:12 GMT

Message-ID:

<7816fd0c7e4ee@uwe>

chrism778@gmail.com wrote:

The skip() method appears to be broken in the Java 1.5.05 JVM for
kernel 2.6.9 of Linux (32-bit) when you pass in a value larger than
Integer.MAX_VALUE. I keep getting an "IOException: Invalid Argument"
when trying to skip more than Integer.MAX_VALUE bytes in a file larger
than Integer.MAX_VALUE.

...

Does anyone know of a workaround or fix for this?

I note you had found a work-around for the current
installation, by changing the FS. Assuming the FS
were not open for adjustment to this apps. needs,
I was wondering if this simple little hack might work.

..
  long target = Integer.MAX_VALUE*5l + 7l;
  while ( target>Integer.MAX_VALUE ) {
    fis.skip( Integer.MAX_VALUE );
    target -= Integer.MAX_VALUE;
  }
  fis.skip( target );
..

A test by the OP under the original conditions would
be interesting, but I am also interested in hearing
theoretical comments.

--
Andrew Thompson
http://www.athompson.info/andrew/

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