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Re: mkdir -p and EROFS
Paul Eggert <eggert@CS.UCLA.EDU> wrote:
> ericblake@comcast.net (Eric Blake) writes:
>> The algorithm change between 5.3.0 and 5.90 in lib/mkdir-p.c to
>> try mkdir() first instead of stat(), and key off of EEXIST, breaks
>> when mkdir() fails with EROFS on an intermediate directory when
>> the writable directory has been mounted inside a read-only tree.
>
> Thanks for reporting this. It is indeed a bug in
> coreutils/lib/mkdir-p.c. It can be triggered by other errors too.
> This is hard to write a test case for, but I'd like to fix things.
> Does the following patch work for you?
>
> Jim, if this works for Eric, is it OK to install this patch at this late
> date?
Nice patch.
This seems safe enough, so yes, please apply.
Thanks!
> 2005-10-12 Paul Eggert <eggert@cs.ucla.edu>
>
> * mkdir-p.c (make_dir_parents): Don't fail if an intervening mkdir
> fails due to EROFS, or due to EEXIST or other reasons for that matter.
> Problem reported by Eric Blake.
> (ENOSYS): Remove; no longer needed.
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