Problems on case-sensitive file systems
Thomas Wolff
towo@towo.net
Thu Oct 23 12:42:00 GMT 2014
Am 22.10.2014 16:00, schrieb Corinna Vinschen:
> On Oct 22 09:01, Thomas Wolff wrote:
>> I'm facing a number of issues with case-sensitivity which I've collected:
>>
>> There is a documented limitation on case-sensitivity using drive letter
>> paths,
>> also mentioned in https://sourceware.org/ml/cygwin/2013-08/msg00090.html
>> (last item). I vaguely remember seeing a reason for this limitation in some
>> mail but can't find it again. I think it would be good to remove this
>> limitation because it breaks user expectations when working on
>> case-sensitive drives.
> The user expectation when using DOS paths is caseinsensitivity in the
> first place. But, as usual, there's no way to do this right, since
> somebody will have another POV. My stance is, don't use DOS paths when
> using Cygwin. At leats don't use DOS paths if you have any expectations
> about special POSIX path handling on Cygwin.
I use an application that uses Windows or mixed paths, I cannot
influence it. So while I understand your POV, it would still be helpful
to have path interpretation fully-featured. (If you point me to a place
in winsup, I might even try to do something myself.)
>> According to documentation, the posix mount flag is enforced to be the same
>> for all mounts below /cygdrive; is there a strong reason?
> Yes. The flags are shared between all cygdrive paths. If you need
> something else, don;'t use the cygdrive path, but another, manually
> added mount point. Note that this:
>
> none /cygdrive cygdrive binary,posix=0,user 0 0
> D: /cygdrive/d ntfs binary,nouser,posix=1,noumount 0 0
>
> does NOT work. The manual paths must not overlap with the cygdrive
> paths.
I know and I did use a different path (maybe too similar to get
recognized...). But it does not seem to work properly:
I have now this in /etc/fstab:
C: /mnt/c ntfs binary,nouser,posix=1,noumount 0 0
T: /mnt/t smbfs binary,user,posix=1,noumount,auto 0 0
which has no effect at all. Neither are these mounts set automatically
when starting cygwin, nor can I refer to them by 'mount /mnt/t' ("mount:
can't find /mnt/t in /etc/fstab or in /etc/fstab.d/$USER") or 'mount -a'
(no effect).
The only thing that works is manual mounting:
mount -o posix=1 C: /mnt/c
mount -o posix=1,exec T: /mnt/t
But: while case-sensitivity now works in /mnt/c, it still does not in
/mnt/t.
As a minor side-effect, the mount points in /cygdrive of these two
drives now disappear from the list shown by 'mount' although they are
still available as duplicate mounts.
------
Thomas
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