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Re: segfault with exceedingly long path

On Sun, Jan 19, 2014 at 01:35:50PM -0800, Bart Schaefer wrote:
> In this particular case even if the shell were able to deal with an
> "unlimited" directory nesting depth, system calls like chdir(2) would
> begin to fail.

PATH_MAX is the maximum relative path length, which should be
accepted by chdir(2) and similar system calls.

As long as we don't use paths longer than PATH_MAX in system
calls, it doesn't matter how "deep" the directory structure is.
It only becomes a problem if a very long absolute path is used.

So we could do that in small steps, e.g. first chdir(2) to a
directory < PATH_MAX bytes deep, then from there to the next
directory < PATH_MAX bytes deep and so on until we get down to
the real directory.

I don't think that's worth it, but it works.

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