File System

File System

[Dibyayan Chakraborty]

Hi,
I want to implement a file system and integrate with my system. Now
first i have to implement the code for disk-formatting(like populating
the super_block , root inode etc). I want to see the source code for the
ext3 file system for this purpose.

Please tell me which file in the kernel source contains the
implementation.

File System

[Racz Zoli]

Hi.I don't know about the ext 3 format code, but you can check out this
repository:

https://github.com/raczzoli/testfs

It is an experimental file system, but it can handle basic operations like
directory listing/creation/removal, file creation and listing and you can
also find a format utility under tools.
I hope it helps.

Regards, Zoli.
On May 25, 2013 8:15 AM, "Dibyayan Chakraborty" <dib.coolguy@gmail.com>
wrote:

> Hi,
> I want to implement a file system and integrate with my system. Now
> first i have to implement the code for disk-formatting(like populating
> the super_block , root inode etc). I want to see the source code for the
> ext3 file system for this purpose.
>
> Please tell me which file in the kernel source contains the
> implementation.
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
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File system

[Abhishek Rai]

here are my problems :
1.
i implemented a file system on redhat linux 6.2 named
it pfs(peaceful file system). inserted it as a module
using insmod. got inserted peacefully.  the fs worked
on linux 6.2 :mouunted, ls, cat ,etc. .... But
consider the following problem:
	i unmount the dev i had mounted as a pfs file system.
then i try to rmmod the pfs module :
what i get is:
pfs: Device or resource busy.

i tried similar stuff with minix, ensured that the
module functionality of pfs, the include files of pfs
is identical to minix. 
STILL THE SAME TROUBLE.
	
2.
i compile this code on redhat 7.2 :   compiled ok
(after 
(i):-i made necessary changes in some functions which
had witnessed a change in their definitions, etc..
anyway fugget it
(ii):-got some directions while compiling regarding
the compile time options : tried them and things got
ok
). 
then i try to do insmod: result ...  i get many
functions as unresolved symbol. i check for the same
functions in ext3fs(which is added as a module to the
7.2's kernel).. i find the "unresolved" functions up
and working fine for ext3fs. i make sure that my
includes etc. are identical to ext3fs's : no use. 
i bang my head : no use.
so why this problem

-abhishek

=====
Don't say Goodbye say Goodluck
============================================================
Abhishek Rai
3rd year,B.Tech, Computer Science and Engineering
IIT KGP,India
abbashake007@yahoo.com
============================================================


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