linux-ext4 - Re: [PATCH] e4defrag : Open the source file for e4defrag in read write mode to avoid failures from EXT4_IOC_EXT

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Date:	Tue, 19 Jan 2010 10:10:54 +0530
From:	Manish Katiyar <mkatiyar@...il.com>
To:	Akira Fujita <a-fujita@...jp.nec.com>
Cc:	ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] e4defrag : Open the source file for e4defrag in read 
	write mode to avoid failures from EXT4_IOC_EXT_MOVE

2010/1/19 Akira Fujita <a-fujita@...jp.nec.com>:
>
> Hi Manish,
>
> (2010/01/19 13:21), Manish Katiyar wrote:
>> Hi Akira,
>>
>> I am consistently getting -EBADF while trying out e4defrag and it
>> fails with below error.
>>
>> /home/mkatiyar/e2fs-git/e2fsprogs/misc>  ./e4defrag -v /tmp/ohsm/mntdir/f1
>> ext4 defragmentation for /tmp/ohsm/mntdir/f1
>> [1/1]/tmp/ohsm/mntdir/f1:       0%
>>       Failed to defrag:Bad file descriptor    [ NG ]
>>   Success:                    [0/1]
>>
>> Below patch fixes the issue for me, though I am not sure if this is
>> the right fix to open the source file in readwrite mode or fix the
>> ext4 ioctl part.
>>
>
> Patch looks good to me.
> # I send same patch to Ted last month, but it is not on linux-ext4, sorry.
>
> By commit 4a58579b9e4e2a35d57e6c9c8483e52f6f1b7fd6 of Linus' kernel tree,
> rw mode check was added to EXT4_IOC_MOVE_EXTENT.
> But command patch which corresponds to this change
> has not been merged into e2fsprogs.
> So this change is needed to run e4defrag command on current Linux kernel.

Ohh okie... Thanks a lot for the prompt response :-)

Thanks -
Manish

>
> Regards,
> Akira Fujita
>
>
>> Open the source file in read write mode to avoid failures from EXT4_IOC_EXT_MOVE
>>
>> Signed-off-by: Manish Katiyar<mkatiyar@...il.com>
>> ---
>>   misc/e4defrag.c |    2 +-
>>   1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/misc/e4defrag.c b/misc/e4defrag.c
>> index 82e3868..424e0ca 100644
>> --- a/misc/e4defrag.c
>> +++ b/misc/e4defrag.c
>> @@ -1605,7 +1605,7 @@ static int file_defrag(const char *file, const
>> struct stat64 *buf,
>>               return 0;
>>       }
>>
>> -     fd = open64(file, O_RDONLY);
>> +     fd = open64(file, O_RDWR);
>>       if (fd<  0) {
>>               if (mode_flag&  DETAIL) {
>>                       PRINT_FILE_NAME(file);
>
>
>



-- 
Thanks -
Manish
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