Proposal: better timestamp granularity for modificationTime/setFileTimes in System.Posix.Files[.ByteString]

Marios Titas redneb8888 at
Tue Jun 12 01:14:47 CEST 2012

On Mon, Jun 11, 2012 at 2:04 PM, Brandon Allbery <allbery.b at> wrote:
> On Mon, Jun 11, 2012 at 9:25 AM, Marios Titas <redneb8888 at> wrote:
>> System.Posix.Files[.ByteString] contains the following functions
>> related to file times: accessTime, modificationTime, statusChangeTime,
>> setFileTimes.
>> All of these functions offer granularity of one second. Modern posix
>> systems support newer functions (such as utimes, utimensat) that offer
>> better granularity (up to 1 nanosecond).
> Be aware that how these are provided varies:  Solaris, FreeBSD, and Linux
> use different extensions and different types to represent them.

Yes, I am well aware of that. What I meant is to pick the best
function available using #ifdef's  and then convert the timestamps to
a common type (such as POSIXTime from Data.Time.Clock.POSIX)
irrespective of what function was actually used.

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