[PATCH] e4defrag : Open the source file for e4defrag in read write mode to avoid failures from EXT4_IOC_EXT_MOVE

[PATCH] e4defrag : Open the source file for e4defrag in read write mode to avoid failures from EXT4_IOC_EXT_MOVE

[Manish Katiyar]

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.


Open the source file in read write mode to avoid failures from EXT4_IOC_EXT_MOVE

Signed-off-by: Manish Katiyar <mkatiyar@gmail.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);
-- 
1.6.3.3


-- 
Thanks -
Manish
==================================
[$\*.^ -- I miss being one of them
==================================

Re: [PATCH] e4defrag : Open the source file for e4defrag in read write mode to avoid failures from EXT4_IOC_EXT_MOVE

[Akira Fujita]

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.

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@gmail.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);

Re: [PATCH] e4defrag : Open the source file for e4defrag in read write mode to avoid failures from EXT4_IOC_EXT_MOVE

[Manish Katiyar]

2010/1/19 Akira Fujita <a-fujita@rs.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@gmail.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
==================================
[$\*.^ -- I miss being one of them
==================================
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