Chun Yan Liu writes ("Re: [PATCH V5 2/7] libxl_read_file_contents: add new
entry to read sysfs file"):
> >>> On 6/29/2015 at 06:52 PM, in message
> <21905.9050.452111.208...@mariner.uk.xensource.com>, Ian Jackson
> <ian.jack...@eu.citrix.com> wrote:
> > Chun Yan Liu writes ("Re: [PATCH V5 2/7] libxl_read_file_contents: add new
> > > > But if we are intending to use this with sysfs files, where the
> > reported size is known to be wrong, it seems to me that we should be
> > more proactive.
>
> If only for sysfs files, the bigger size problem should never
> happens, since sysfs system is not like normal file system, user
> won't be able to change the size.
>
> Reference from following link:
> http://www.makelinux.net/books/lkd2/ch17lev1sec8
I don't think that can be relied on as a guide to the future API.
Maybe sysfs will grow support for bigger files in the future. (Also,
that is actually a description of the kernel internals, not of the
syscall API).
Thanks,
Ian.
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