linux-kernel - Re: bug? VFAT copy problem

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Date:	Wed, 22 Nov 2006 16:30:01 +0100
From:	The Peach <smartart@...cali.it>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: bug? VFAT copy problem

On Wed, 22 Nov 2006 00:46:43 +0900
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> wrote:

> Can you try the attached debug patch? 

Here is the debug for the copy of a normal file over vfat:

# cp -v DSCN5970\(1\).JPG /mnt/loop/
`DSCN5970(1).JPG' -> `/mnt/loop/DSCN5970(1).JPG'

and the output on dmesg:
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name DSCN5970(1).JPG
vfat_lookup: name DSCN5970(1).JPG
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name DSCN5970(1).JPG
vfat_cmpi: parent d528a514, parent->d_op e0fbf5c0
vfat_cmpi: a DSCN5970(1).JPG, b DSCN5970(1).JPG
vfat_revalidate: name DSCN5970(1).JPG, nd c9f1af30, flags 00000300             
vfat_lookup: name DSCN5970(1).JPG
vfat_create: name DSCN5970(1).JPG
vfat_add_entry: 0: DSCN59~1, JPG
vfat_add_entry: 1: DSCN5, 970(1), .J
vfat_add_entry: 2: PG
vfat_create: err 0

and the copy of an "abnormal" file:

# cp -v DSCN5980.JPG /mnt/loop/
`DSCN5980.JPG' -> `/mnt/loop/DSCN5980.JPG'

and its dmesg output:
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name DSCN5980.JPG
vfat_cmpi: parent d528a514, parent->d_op e0fbf5c0
vfat_cmpi: a dscn5980.jpg, b DSCN5980.JPG
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name DSCN5980.JPG
vfat_cmpi: parent d528a514, parent->d_op e0fbf5c0
vfat_cmpi: a dscn5980.jpg, b DSCN5980.JPG
vfat_create: name dscn5980.jpg
vfat_add_entry: 0: DSCN5980, JPG
vfat_add_entry: 1: dscn5, 980.jp, g
vfat_create: err 0

then:

# ls -l /mnt/loop/
totale 1363
-rwxr-xr-x 1 root root 695514 22 nov 16:21 DSCN5970(1).JPG
-rwxr-xr-x 1 root root 699770 22 nov 16:25 dscn5980.jpg

and its output:
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name DSCN5970(1).JPG                                     
vfat_cmpi: parent d528a514, parent->d_op e0fbf5c0
vfat_cmpi: a DSCN5970(1).JPG, b DSCN5970(1).JPG
vfat_revalidate: name DSCN5970(1).JPG, nd c9f18ef8, flags 00000000
vfat_lookup: name DSCN5970(1).JPG
vfat_hashi: parent d528a514, parent->d_op e0fbf5c0
vfat_hashi: parent /, name dscn5980.jpg
vfat_cmpi: parent d528a514, parent->d_op e0fbf5c0
vfat_cmpi: a dscn5980.jpg, b dscn5980.jpg


> And if you comment-in the
> following parts, does this problem fix?

I will repatch asap and post the result.

-- 
Matteo 'Peach' Pescarin

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