From: Arun Sharma <arun.sharma@intel.com>
To: linux-arch@vger.kernel.org
Subject: compat tasks and O_LARGEFILE
Date: Fri, 27 Feb 2004 17:57:09 -0800 [thread overview]
Message-ID: <20040228015709.GB6897@intel.com> (raw)
This code sequence in linux/fs/open.c:
> asmlinkage long sys_open(const char __user * filename, int flags, int mode)
> {
> char * tmp;
> int fd, error;
>
> #if BITS_PER_LONG != 32
> flags |= O_LARGEFILE;
> #endif
is problematic for compat tasks. For eg: negative seeks can result in
~4GB files getting created.
Are there any objections to letting a task reset this flag using a fcntl?
There are some corner cases, such as what if the file pointer is already
beyond 4GB etc, but I think they're solvable.
-Arun
next reply other threads:[~2004-02-28 2:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-28 1:57 Arun Sharma [this message]
2004-02-28 23:56 ` compat tasks and O_LARGEFILE David S. Miller
2004-02-29 2:38 ` Arun Sharma
2004-03-01 5:56 ` David S. Miller
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