Re: [Xen-devel] [PATCH V5 2/7] libxl_read_file_contents: add new entry to read sysfs file

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

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
> <21905.9050.452111.208124@xxxxxxxxxxxxxxxxxxxxxxxx>, Ian Jackson
> <Ian.Jackson@xxxxxxxxxxxxx> 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.

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel