On Tue, Oct 20, 2009 at 3:59 PM, Sunil Mushran <sunil.mushran@xxxxxxxxxx> wrote: > Steve French wrote: >> >> So, are we ready for Mingming or one of the ext4 developers to propose >> a patch for this via xattrs (I can do a similar one for cifs). >> Sounds like various have said: >> >> 1) xattrs instead of ioctl >> 2) get of create time allowed by default, but set of create time limited >> >> But for the second part of this - how should we set nanosecond >> timestamps for the others (or in Samba's case, rounded to 100 >> nanoseconds for DCE time) ... a millisecond granularity for utimes is >> a very long time these days. > > What's wrong with stat(2)? AFAIK, it supports nanoseconds. An earlier post from Mingming IIRC noted that utimes does not support setting nanosecond timestamps (e.g. write time). "The function utime() allows specification of time stamps with a resolution of 1 second. ... The function utimes() is similar, but the times argument allows a reso lution of 1 microsecond for the timestamps. " 1 millisecond is not sufficient, and as a result Samba has to store duplicate time stamps (in Samba specific xattrs) which we would like to avoid wherever possible -- Thanks, Steve -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
