Re: [PATCH] Limit sendfile() to 2^31-PAGE_CACHE_SIZE bytes withouterror

[H. Peter Anvin]

Ulrich Drepper wrote:
> Linus Torvalds wrote:
>
> > Ok, this patch looks ok, if it's confirmed to unbreak apache.
>
> Yes, sounds reasonable.  But I don't think that, as Peter suggested in
> another mail, that glibc should automatically wrap the syscall to
> provide support for  larger sizes.  The caller probably should know when
> a transfer was cut short.

Agreed; that's exactly what a short return in supposed to do.  Since a 
short return is compatible with the defined API, that's not a problem.

However, this patch only addresses sendfile(), and this is apparently a 
much more pervasive problem.  We need something similar for all the I/O 
system calls that are affected by this particular issue.

	-hpa
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