Re: [PATCH] Limit sendfile() to 2^31-PAGE_CACHE_SIZE bytes without error

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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• References:
  • [PATCH] Limit sendfile() to 2^31-PAGE_CACHE_SIZE bytes without error
    • From: "H. Peter Anvin" <[email protected]>
  • Re: [PATCH] Limit sendfile() to 2^31-PAGE_CACHE_SIZE bytes without error
    • From: Linus Torvalds <[email protected]>
  • Re: [PATCH] Limit sendfile() to 2^31-PAGE_CACHE_SIZE bytes without error
    • From: Ulrich Drepper <[email protected]>

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