On 11/9/05, Chris Page <email@hidden> wrote:
> On Nov 9, 2005, at 11:26 AM, Mark Wagner wrote:
>
> > How do I determine the access permissions for a file? The headers
> > indicate that FSCatalogInfo has a field called "permissions", that for
> > a file on an HFS+ disk will return the POSIX permissions for the file,
> > but how do I get from that to an answer to "can I read that file?"
> >
> > Also, what about other situations, such as:
> > - A file on a FAT-12 floppy disk? What if the disk is locked?
> > - A file on a Windows file server?
> > - A file on an HFS disk?
> > - A file on a CD-ROM?
>
> The short answer is: Don't bother trying to determine whether you can
> read the file, just try opening the file with the access you want and
> see if that succeeds.
Let's pretend I was so insane as to actually want to do this. How
would I handle common "special cases"? Would the "permissions" member
of an FSCatalogInfo structure have anything sensible for a file on a
Windows file server? How would I handle making sure I wasn't about to
try to write to a CD-ROM?
Thanks,
Mark Wagner
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