[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] hvmloader/smbios: Change strncpy to memcpy for anchor strings.
>>> On 24.09.13 at 12:11, Keir Fraser <keir.xen@xxxxxxxxx> wrote: > On 24/09/2013 10:39, "Jan Beulich" <JBeulich@xxxxxxxx> wrote: > >>>> - strncpy(ep->anchor_string, "_SM_", 4); >>>> + memcpy(ep->anchor_string, "_SM_", sizeof(ep->anchor_string)); >>> >>> Why the change from 4 to sizeof(ep->anchor_string) here (and similar below)? >>> Setting the copy length based on the size of the destination rather than the >>> source seems like the wrong thing to do. >> >> One can argue either way here: >> - passing the destination's size guarantees no memory corruption >> - passing the source's size guarantees no uninitialized memory >> >> Since the structure fields involved here aren't going to change, >> either way is fine imo. > > As was the unadorned number 4, imo. Yes - I'm fine with both; I don't even favor one over the other. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |