[7464] in bugtraq
Re: Fwd: Any user can panic OpenBSD machine
daemon@ATHENA.MIT.EDU (der Mouse)
Wed Jul 29 15:27:44 1998
Date: Wed, 29 Jul 1998 08:24:16 -0400
Reply-To: der Mouse <mouse@RODENTS.MONTREAL.QC.CA>
From: der Mouse <mouse@RODENTS.MONTREAL.QC.CA>
To: BUGTRAQ@NETSPACE.ORG
>> Shouldn't the internal sum better be 64-bit? After all, FFS is able
>> to do files > 2^32 bytes...
> read(2), etc. return the number of bytes transferred - so it must be
> within an unsigned machine word.
In practice, within a signed word, given the amount of code that tests
for <0 instead of ==-1.
> On OSs where the ABI supports large machine words than 32-bits, then
> files over 2/4GB are indeed possible.
I don't quite get what you mean. What does the amount of data
transferrable in a single read/readv have to do with file size?
There's nothing difficult about files >4G on a 32-bit machine, provided
a >32-bit signed integral type is available for off_t.
der Mouse
mouse@rodents.montreal.qc.ca
7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
