Hi,
Wil Walfin wrote on 10/5/20 10:56 AM:
But case-insensitive-yet-preserving works for VFAT, with no problems
at all. So I don't see why the issue of wildcards and kernel calls is
an issue for NTFS when it is not an issue for VFAT or EXFAT.
vfat is an in-kernel file system, so it serves a different interface
from ntfs-3g which is base on fuse.
I do not know of any way through the fuse interface to get a
shell to do case-insensitive wildcard processing.
Jean-Pierre
On Mon, 5 Oct 2020 at 16:50, <jpan...@users.sourceforge.net
<mailto:jpan...@users.sourceforge.net>> wrote:
> Currently, ntfs-3g works in case sensitive mode. lowntfs-3g is
> case insensitive but it makes all the filenames lowercase.
>
> Is there a way to make it case insensitive yet preserving, just
> like how it operates on Windows? I think this is a very common
> use case especially for those of us who dual boot.
>
[Copy to ntfs-3g-devel@lists.sourceforge.net
<mailto:ntfs-3g-devel@lists.sourceforge.net> please follow up there]
Case insensitivity does not play well in a case sensitive environment.
There are two main situations to examine :
1) when looking up for a file (for open(), stat(), etc.), the
kernel asks
the file system for the file, but the file system has no opportunity
to return a name different from the requested one :
If, for instance we have two files (file1 and File2)
[root@optiplex ntfslowprof]# ls -l disk/dir
total 1
-rw-rw-rw- 1 root root 7 Apr 29 09:42 file1
-rw-r--r-- 1 root root 0 Oct 5 08:28 File2
If we make requests for file2, fiLE2, etc, we get what we ask for,
not what is actually recorded :
[root@optiplex ntfslowprof]# ls -li disk/dir/fiLE2
971 -rw-r--r-- 1 root root 0 Oct 5 08:28 disk/dir/fiLE2
[root@optiplex ntfslowprof]# ls -li disk/dir/FILE2
971 -rw-r--r-- 1 root root 0 Oct 5 08:28 disk/dir/FILE2
2) When displaying a directory, the file system can return the
actual file names, for instance (with lowntfs-3g modified for
that purpose) :
[root@optiplex ntfslowprof]# ls -l disk/dir
total 1
-rw-rw-rw- 1 root root 7 Apr 29 09:42 file1
-rw-r--r-- 1 root root 0 Oct 5 08:28 File2
But in that situation, the use of wildcards in the shell is
confusing because the shell is case sensitive :
[root@optiplex ntfslowprof]# ls -li disk/dir/file/
97 -rw-rw-rw- 1 root root 7 Apr 29 09:42 disk/dir/file1
[root@optiplex ntfslowprof]# ls -li disk/dir/Fi/
971 -rw-r--r-- 1 root root 0 Oct 5 08:28 disk/dir/File2
[root@optiplex ntfslowprof]# ls -li disk/dir//ile/
97 -rw-rw-rw- 1 root root 7 Apr 29 09:42 disk/dir/file1
971 -rw-r--r-- 1 root root 0 Oct 5 08:28 disk/dir/File2
This is why the names are made lowercase when reading
a directory.
Jean-Pierre
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