On Wed, Jun 26, 2019 at 3:04 PM Junio C Hamano <gitster@xxxxxxxxx> wrote:
>
> Johannes Schindelin <Johannes.Schindelin@xxxxxx> writes:
>
> > Hi Matheus,
> >
> > On Tue, 18 Jun 2019, Matheus Tavares wrote:
> >
> >>[...]
> >> +/*
> >> + * Look for a recursive symlink at iter->base.path pointing to any directory on
> >> + * the previous stack levels. If it is found, return 1. If not, return 0.
> >> + */
> >> +static int find_recursive_symlinks(struct dir_iterator_int *iter)
> >> +{
> >> + int i;
> >> +
> >> + if (!(iter->flags & DIR_ITERATOR_FOLLOW_SYMLINKS) ||
> >> + !S_ISDIR(iter->base.st.st_mode))
> >> + return 0;
> >>
> >> + for (i = 0; i < iter->levels_nr; ++i)
> >> + if (iter->base.st.st_ino == iter->levels[i].ino)
> >
> > This does not work on Windows. [[ Windows port does not have
> > usable st_ino field ]]]
>
> And if you cross mountpoint, st_ino alone does not guarantee
> uniqueness; you'd need to combine it with st_dev, I would think,
> even on POSIX systems.
Ok, thanks for letting me know. I'm trying to think of another
approach to test for recursive symlinks that does not rely on inode:
Given any symlink, we could get its real_path() and compare it with
the path of the directory current being iterated. If the first is a
prefix of the second, than we mark it as a recursive symlink.
What do you think of this idea?
