* Writing a wtapper for BTRFS
@ 2013-02-27 12:53 penn43
2013-02-27 13:08 ` Hugo Mills
0 siblings, 1 reply; 6+ messages in thread
From: penn43 @ 2013-02-27 12:53 UTC (permalink / raw)
To: linux-btrfs
Hi
where can I find some documentation that will help me
in writing language bindings for BTRFS?
Thanks
Penn
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Writing a wtapper for BTRFS
2013-02-27 12:53 Writing a wtapper for BTRFS penn43
@ 2013-02-27 13:08 ` Hugo Mills
2013-02-27 15:19 ` David Sterba
2013-02-28 13:43 ` Writing a wrapper " penn43
0 siblings, 2 replies; 6+ messages in thread
From: Hugo Mills @ 2013-02-27 13:08 UTC (permalink / raw)
To: penn43; +Cc: linux-btrfs
[-- Attachment #1: Type: text/plain, Size: 1074 bytes --]
On Wed, Feb 27, 2013 at 01:53:17PM +0100, penn43@gmx.com wrote:
> where can I find some documentation that will help me
> in writing language bindings for BTRFS?
You may want to look at the btrfs-progs libify patches (posted to
this list in the last couple of months), which try to pull out the
more useful bits of btrfs-progs as a userspace C API.
You may also want to look at the bits I implemented in python[2]
for a subset of the btrfs ioctls and data structures in btrfs-gui.
Other than that, it's down to the data structures documentation on
the wiki[1], and reading through ioctl.h.
Hugo.
[1] https://btrfs.wiki.kernel.org/index.php/Data_Structures
[2] http://git.darksatanic.net/cgi/gitweb.cgi?p=btrfs-gui.git;a=blob;f=btrfsgui/btrfs.py;h=0941de1efeadb81576edf1c7c84da28805310a92;hb=aba25f9efe7bcdb99e8cfa38e703c4b0739c6af9
--
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Writing a wtapper for BTRFS
2013-02-27 13:08 ` Hugo Mills
@ 2013-02-27 15:19 ` David Sterba
2013-02-27 21:34 ` Zach Brown
2013-02-28 13:43 ` Writing a wrapper " penn43
1 sibling, 1 reply; 6+ messages in thread
From: David Sterba @ 2013-02-27 15:19 UTC (permalink / raw)
To: Hugo Mills, penn43, linux-btrfs
On Wed, Feb 27, 2013 at 01:08:46PM +0000, Hugo Mills wrote:
> You may want to look at the btrfs-progs libify patches (posted to
> this list in the last couple of months), which try to pull out the
> more useful bits of btrfs-progs as a userspace C API.
FYI, libify patch will be in the next integration branch.
> You may also want to look at the bits I implemented in python[2]
> for a subset of the btrfs ioctls and data structures in btrfs-gui.
>
> Other than that, it's down to the data structures documentation on
> the wiki[1], and reading through ioctl.h.
bedup https://github.com/g2p/bedup does python binding, in a different
way than btrfs-gui.
david
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Writing a wtapper for BTRFS
2013-02-27 15:19 ` David Sterba
@ 2013-02-27 21:34 ` Zach Brown
2013-02-27 22:48 ` Andy Grover
0 siblings, 1 reply; 6+ messages in thread
From: Zach Brown @ 2013-02-27 21:34 UTC (permalink / raw)
To: dsterba, Hugo Mills, penn43, linux-btrfs; +Cc: Andy Grover
On Wed, Feb 27, 2013 at 04:19:57PM +0100, David Sterba wrote:
> On Wed, Feb 27, 2013 at 01:08:46PM +0000, Hugo Mills wrote:
> > You may want to look at the btrfs-progs libify patches (posted to
> > this list in the last couple of months), which try to pull out the
> > more useful bits of btrfs-progs as a userspace C API.
>
> FYI, libify patch will be in the next integration branch.
>
> > You may also want to look at the bits I implemented in python[2]
> > for a subset of the btrfs ioctls and data structures in btrfs-gui.
> >
> > Other than that, it's down to the data structures documentation on
> > the wiki[1], and reading through ioctl.h.
>
> bedup https://github.com/g2p/bedup does python binding, in a different
> way than btrfs-gui.
Andy also mentioned being interested in language bindings of a libified
btrfs-progs, cc:ing.
- z
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Writing a wtapper for BTRFS
2013-02-27 21:34 ` Zach Brown
@ 2013-02-27 22:48 ` Andy Grover
0 siblings, 0 replies; 6+ messages in thread
From: Andy Grover @ 2013-02-27 22:48 UTC (permalink / raw)
To: Zach Brown; +Cc: dsterba, Hugo Mills, penn43, linux-btrfs
On 02/27/2013 01:34 PM, Zach Brown wrote:
> On Wed, Feb 27, 2013 at 04:19:57PM +0100, David Sterba wrote:
>> On Wed, Feb 27, 2013 at 01:08:46PM +0000, Hugo Mills wrote:
>>> You may want to look at the btrfs-progs libify patches (posted to
>>> this list in the last couple of months), which try to pull out the
>>> more useful bits of btrfs-progs as a userspace C API.
>>
>> FYI, libify patch will be in the next integration branch.
>>
>>> You may also want to look at the bits I implemented in python[2]
>>> for a subset of the btrfs ioctls and data structures in btrfs-gui.
>>>
>>> Other than that, it's down to the data structures documentation on
>>> the wiki[1], and reading through ioctl.h.
>>
>> bedup https://github.com/g2p/bedup does python binding, in a different
>> way than btrfs-gui.
>
> Andy also mentioned being interested in language bindings of a libified
> btrfs-progs, cc:ing.
Yeah. Python/otherlang wrappers around a btrfs-progs C api seem
preferable to each binding calling ioctls themselves, no? I think every
common language is going to eventually want a btrfs lib.
-- Andy
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Writing a wrapper for BTRFS
2013-02-27 13:08 ` Hugo Mills
2013-02-27 15:19 ` David Sterba
@ 2013-02-28 13:43 ` penn43
1 sibling, 0 replies; 6+ messages in thread
From: penn43 @ 2013-02-28 13:43 UTC (permalink / raw)
To: linux-btrfs
Thanks for your replies.
Just so that I know what I am getting into if I decide to try writing
Btrfs bindings, is this something that requires expertise of C on my part?
Supposing that I only need bindings for the most basic filesystem
functionality, plus access to extended metadata, how long is this work
going to take (considering that I have no prior experience with bindings)?
Thanks
Penn
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-02-27 12:53 Writing a wtapper for BTRFS penn43
2013-02-27 13:08 ` Hugo Mills
2013-02-27 15:19 ` David Sterba
2013-02-27 21:34 ` Zach Brown
2013-02-27 22:48 ` Andy Grover
2013-02-28 13:43 ` Writing a wrapper " penn43
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