Re: [d_path 0/7] Fixes to d_path: Respin

Andreas Gruenbacher
2007-04-20T15:21:22Z

On Friday 20 April 2007 17:15, Ulrich Drepper wrote:
> On 4/20/07, Andreas Gruenbacher <agruen@suse.de> wrote:
> > Possibly for fstatfs(): fstatfs() has no way of looking up mount points
> > per path name in /proc/mounts, and so it resorts to mapping from the
> > numeric statfs->f_type to the filesystem name (e.g., "ext3"), looks up
> > the first mount point with that name, and sets the statfs->f_flag flags
> > based on that entry. This field may change from one arbitrary value to
> > another.
>
> What are you talking about? fstatfs is a syscall, we do nothing but
> copying values around at userlevel.
>
> statvfs on the other hand does use /proc/mounts. And it most
> certainly does look at the mount point before looking at the
> filesystem type.

Yes, that one, sorry. The values it obtains that way are not reliable.

Thanks,
Andreas