Jim Meyering <[EMAIL PROTECTED]> writes:
> By the way, I've just realized that it *is* possible to implement these
> mkdir-like functions in a thread-safe manner (i.e. traversing via openat,
> operating on files via mkdirat, chmodat, etc.), while remaining efficient
> (O(n)). The only assumption is that the target directory name does not
> contain too long a sequence of existing unreadable directories (sum
> of length of names + slashes > PATH_MAX).
I initially tried something like that, but got too confused by it,
perhaps partly because I wanted to fall back on something like the
current approach when mkdirat didn't work (which is a common case
these days, even on GNU/Linux systems, alas).
The current code is still too complicated for my taste -- I'd be quite
surprised if it were bug-free. I considered ripping out the
open(".")/fchdir part of the code, since it's simpler if you assume
that you _always_ create a subprocess, but decided that in this case
simplicity had to yield to performance.
> One nit:
Thanks for catching that. I fixed it and installed the result.
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