Re: Coreutils enhancement: ls: add colorization of mountpoints

[Dragan Simic]

On 2023-10-17 19:05, Parke wrote:
> > On 10/16/23 16:50, Parke wrote:
> > > I am contemplating extending ls so that mountpoints can be colorized
> > > (via LS_COLORS).
>
> On Tue, Oct 17, 2023 at 2:30 AM Rob Landley <rob@landley.net> wrote:
> > > I'm hoping that a mountpoint can be detected by comparing the st_dev
> > > fields returned by calling stat() on a directory and on that
> > > directory's parent.
> >
> > --bind mounts exist,
>
> If bind mounts get their own st_dev device id (and they probably do?),
> then they would be colored the same as mountpoints.  In my opinion,
> this is expected and desired.

Regarding performing the additional stat() calls on all files, which 
currently aren't performed at all in ls(1), but only when $LS_COLORS 
tells ls(1) that they should be performed, I'm afraid that dircolors(1) 
would be expected to have that in the $LS_COLORS that it produces, 
making many users perform the stat() calls they actually don't want or 
need.  Maybe having an additional command-line option for ls(1), which 
would enable the additional processing, could be an option.

It goes without saying that performing numerous stat() calls would 
induce a significant performance penalty, compared with the currently 
employed readdir() approach.