On Friday 2009-07-03 01:37, tridge@samba.org wrote:

quoted text
>

> > Yes, here is your precedent case. The DUALNAMES patch breaks the

> > operation on my Fujifilm Finepix A210 digital camera.

>

>interesting, but I think you may have been trapped by differences in

>the VFAT mounting options between the two examples.

No special options — all defaults to whatever the Linux kernel and

util-linux 2.14.1 gave me. Whereby util-linux should not make a

difference because it just passes on the mount request for there is

no special vfat helper.
Given my second report about the audio player (just sent out), I even

compared dualnames=n with =y on the same kernel — which would rule

out changed defaults between 2.6.29 and 2.6.31-rc.
/proc/mounts contains, on .31-rc:
/dev/sdc1 /mnt vfat rw,relatime,fmask=0022,dmask=0022,codepage=437

iocharset=utf8,errors=remont-ro 0 0
> > Here, dscf4159.jpg is a preexisting file created by the camera itself

quoted text
> > (and subsequently, Finepix's FAT code) as a result of taking a picture.

> > Then I just copied that file with two different kernels in succession.

>

>ok, dscf4159.jpg may or may not be a 8.3 name depending on the

>"shortname=" mount option. As this is a digital camera, I suspect that

>it was created as an 8.3 name, although you'd have to confirm that by

>inspecting the disk image. If you made a copy of the image available

>to me somewhere (please don't email it unless it compresses to a small

>size!) then I can tell you what the camera did in this case.

http://jengelh.medozas.de/files/finepix.img.bz2

(Includes an unreadable dscf3000 entry.)
Then, I just tried everything to get an overview:
 (All with DUALNAMES=n)

 # mount /dev/sdc1 /mnt -o iocharset=utf8,shortnames=lower

 # cp /mnt/dcim/100_fuji/dscf{4160,3004}.jpg

 # umount /mnt

 # mount /dev/sdc1 /mnt -o iocharset=utf8,shortnames=win95

 # cp /mnt/dcim/100_fuji/dscf{4160,3005}.jpg

 # umount /mnt

 # mount /dev/sdc1 /mnt -o iocharset=utf8,shortnames=winnt

 # cp /mnt/dcim/100_fuji/dscf{4160,3006}.jpg

 # umount /mnt

 # mount /dev/sdc1 /mnt -o iocharset=utf8,shortnames=mixed

 # cp /mnt/dcim/100_fuji/dscf{4160,3007}.jpg

 # umount /mnt
Result? The camera only displays 3006.
The dualnames patch's filling filenames with random illegal

chars does seems to have a really foul side-effect after all.

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