JFS libraries/headers for userspace?

JFS libraries/headers for userspace?

[aq]

hello,

I am writing a program in userspace to extract information from a JFS
filesystem. Unfortunately I cannot find which packages provides
libraries/headers for JFS in userland. Could anybody please tell me
where to look for it?

Would be great if you could tell me which Ubuntu/Debian packages
provide what I need.

Thank you a lot,
aq

Re: JFS libraries/headers for userspace?

[Dave Kleikamp]

On Wed, 2005-04-27 at 19:00 +0900, aq wrote:
> hello,
> 
> I am writing a program in userspace to extract information from a JFS
> filesystem. Unfortunately I cannot find which packages provides
> libraries/headers for JFS in userland. Could anybody please tell me
> where to look for it?

You are looking for jfsutils.  There isn't a good general-purpose
user-space library.  Part of jfsutils is a library, libfs.a, but it is
an ad-hoc collection of functions used by the utilities without any real
structure or documentation.

You may also find this document useful:
http://www-106.ibm.com/developerworks/library/l-jfslayout/
The links to the figures, etc. in the document are out of date.  I just
remembered that I need to get them updated.  :^)

> Would be great if you could tell me which Ubuntu/Debian packages
> provide what I need.
> 
> Thank you a lot,
> aq
-- 
David Kleikamp
IBM Linux Technology Center

Re: JFS libraries/headers for userspace?

[aq]

On 4/28/05, Dave Kleikamp <shaggy@austin.ibm.com> wrote:
> On Wed, 2005-04-27 at 19:00 +0900, aq wrote:
> > hello,
> >
> > I am writing a program in userspace to extract information from a JFS
> > filesystem. Unfortunately I cannot find which packages provides
> > libraries/headers for JFS in userland. Could anybody please tell me
> > where to look for it?
> 
> You are looking for jfsutils.  There isn't a good general-purpose
> user-space library.  Part of jfsutils is a library, libfs.a, but it is
> an ad-hoc collection of functions used by the utilities without any real
> structure or documentation.

I am surprised: why there is no separate headers/libraries for JFS in
userspace? Meanwhile, other FS like Reiser, XFS all have their.

In this situation, I must extract needed libraries and headers from
jfsutils, and then package them to include with my software. That is
not so convenient, isnt it?

So if possible, please release something like jfslibs-dev. People want
to write software for JFS would appreciate it.

Thank you,
aq

Re: JFS libraries/headers for userspace?

[Dave Kleikamp]

On Thu, 2005-04-28 at 14:41 +0900, aq wrote:
> On 4/28/05, Dave Kleikamp <shaggy@austin.ibm.com> wrote:
> > On Wed, 2005-04-27 at 19:00 +0900, aq wrote:
> > > hello,
> > >
> > > I am writing a program in userspace to extract information from a JFS
> > > filesystem. Unfortunately I cannot find which packages provides
> > > libraries/headers for JFS in userland. Could anybody please tell me
> > > where to look for it?
> > 
> > You are looking for jfsutils.  There isn't a good general-purpose
> > user-space library.  Part of jfsutils is a library, libfs.a, but it is
> > an ad-hoc collection of functions used by the utilities without any real
> > structure or documentation.
> 
> I am surprised: why there is no separate headers/libraries for JFS in
> userspace? Meanwhile, other FS like Reiser, XFS all have their.

Probably because I've never had a requirement to provide them.

> In this situation, I must extract needed libraries and headers from
> jfsutils, and then package them to include with my software. That is
> not so convenient, isnt it?

No, probably not.  If you're writing a GPL'ed program, you may want to
look at grub.  The file you want is fsys_jfs.c.

> So if possible, please release something like jfslibs-dev. People want
> to write software for JFS would appreciate it.

I don't have the time now to work on providing a package like this, but
if someone were to volunteer to put together a jfslibs-dev package, I
would certainly support it.

> Thank you,
> aq
-- 
David Kleikamp
IBM Linux Technology Center



-------------------------------------------------------
SF.Net email is sponsored by: Tell us your software development plans!
Take this survey and enter to win a one-year sub to SourceForge.net
Plus IDC's 2005 look-ahead and a copy of this survey
Click here to start!  http://www.idcswdc.com/cgi-bin/survey?id=105hix