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From: jap@convex.cl.msu.edu (Joe Porkka)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Question About FileInfoBlock Structures
Keywords: FileInfoBlock directories dos amigados
Message-ID: <1991Feb4.215450.6140@msuinfo.cl.msu.edu>
Date: 4 Feb 91 21:54:50 GMT
References: <18a052ee.ARN02d3@aquarium.buffalo.ny.us>
Sender: news@msuinfo.cl.msu.edu
Organization: Michigan State University
Lines: 24

ernie@aquarium.buffalo.ny.us (Ernest J. Gainey III) writes:

>Hello Everyone,

> I'm curious if anyone knows why this little bit of code produces such
> a strange result, from what I can tell, it should do a directory
> listing filename, filesize, and protections...

> Problem is... the fib_Protection field of the FileInfoBlock structure
> is Empty... when I print it as a "%d", i get a 0... all the other fields
> appear to have values... but do a...
>  printf("Protection==%d\n",MyFileInfoBlock->fib_Protection);
> and I get a: Protection==0 ...

Thats becuase the RWED bits are inversed. If C:LIST reports that the
'A' and the 'R' flags are set, then in fib_Protection, the bit
corresponding to 'a' == 1, and the bit for 'r' ==0.

So, try (fib_Protection ^ 0x0f). That is, reinvert the sense of
those last bit.


The reason this is: The default for protection bits is ----RWED, which
cooresponds to fib_Protection==0