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Re: lib/41085: sigaction returns EINVAL instead of -1

On Sat, Mar 28, 2009 at 04:45:02AM +0000, David Holland wrote:
>  I've looked over the kernel and libc code involved and I don't see any
>  plausible way for it to mix the return value and error code, unless
>  something Xen-specific is causing the carry flag (which distinguishes
>  error returns from real return values) to get cleared in the low-level
>  code on the way back from the system call.

Or somehow some Linux system call code is being used/assumed...
Where, instead of using the carry flag, small negative return values
are taken as errno values.


David Laight:

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