Thank you
On Fri, 23 May 2025 at 16:52, Didier Kryn <didier.kryn_at_free.fr> wrote:
> Le 23/05/2025 à 13:10, Laurent Bercot a écrit :
> > Second thing: last time I checked, you could not use inotify on
> > sysfs to watch for file creation. Has it changed? If it has, it's
> > awesome, but it would only work on recent kernels, so unfortunately
> > that's not usable on a generic distribution (unless they stick to very
> > recent kernels).
>
> Hi. I'm just lurking on Skarnet, but I could comment on this remark
> about inotify.
>
> It's actually too bad that inotify doesn't work on sysfs and
> procfs. But there is an alternative method for an application to wake on
> asynchronous modification of a file, though I don't think it is
> available in a script.
>
> If you watch /proc/self/mountinfo with select() for exceptional
> conditions (exceptfds, in the man page), you get an event whenever the
> file is modified. One might imagine that a directory could be watched
> the same way for file creation/deletion. I don't know, though, if this
> property of /proc/self/mountinfo can be generalized and if it works for
> directories and for sysfs, but it is something which might be explored
> if the problem is critical.
>
> -- Didier
>
>
>
Received on Wed Jun 04 2025 - 21:12:40 CEST