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comp.lang.c++

analyze file system in c++

David.Cristian1987

11/22/2008 10:51:00 PM

Hello

I am about to start a project and I want to check out some things to
see if it's do-able ...
I have to make a program that can recover some files that were
deleted.
I've downloaded the Undo Delete software ... and I saw in the help
file something like this :

"
When the programs and applications would request for a particular file
(after it has been deleted), they would get an error that the file was
not found, while the file is still present on the disk ‘physically’.
"

I have to do this for FAT32 and NTFS. I have some theoretical
knowledge about this, but I haven't implemented nothing in this area.
I have some knowledge in c++ (I had a summer job and I gained some
experience).
So I am asking you :

1.What libraries should I use to get information about the file
system. Let's say that I have a FAT32 drive and I want to list all the
files in the drive using the lowest library (I dont want an answer
like :" system("dir");" or something like that)

2.How can I inspect the the disk "physically", as it is made in the
undo delete software.

Of course, using the C++ language.
I hope I will get some answers, even if I wasn't clear in all I have
said.

Thanks,
David.
12 Answers

utab

11/22/2008 11:05:00 PM

0


> 1.What libraries should I use to get information about the file system.
> Let's say that I have a FAT32 drive and I want to list all the files in
> the drive using the lowest library (I dont want an answer like :"
> system("dir");" or something like that)

Not sure about the file system type(FAT32, NTFS, or ext3) but boost has a
quite easy to use filesystem library AFAIK.

>
> 2.How can I inspect the the disk "physically", as it is made in the undo
> delete software.

Not sure on this, I am a poor mechanical engineer ;-)

Ian Collins

11/22/2008 11:24:00 PM

0

David.Cristian1987 wrote:
> Hello
>
> I am about to start a project and I want to check out some things to
> see if it's do-able ...
> I have to make a program that can recover some files that were
> deleted.

Stop right there, anything to do with file recovery is filesystem
dependent, some don't support it. You'll have to ask on a group for
your OS.

--
Ian Collins

David.Cristian1987

11/23/2008 12:11:00 AM

0

On Nov 23, 1:24 am, Ian Collins <ian-n...@hotmail.com> wrote:
> David.Cristian1987 wrote:
> > Hello
>
> > I am about to start a project and I want to check out some things to
> > see if it's do-able ...
> > I have to make a program that can recover some files that were
> > deleted.
>
> Stop right there, anything to do with file recovery is filesystem
> dependent, some don't support it.  You'll have to ask on a group for
> your OS.
>
> --
> Ian Collins

I am only interested on Windows OS(FAT32)

David.

Sam

11/23/2008 1:43:00 AM

0

David.Cristian1987 writes:

> On Nov 23, 1:24 am, Ian Collins <ian-n...@hotmail.com> wrote:
>> David.Cristian1987 wrote:
>> > Hello
>>
>> > I am about to start a project and I want to check out some things to
>> > see if it's do-able ...
>> > I have to make a program that can recover some files that were
>> > deleted.
>>
>> Stop right there, anything to do with file recovery is filesystem
>> dependent, some don't support it.  You'll have to ask on a group for
>> your OS.
>>
>> --
>> Ian Collins
>
> I am only interested on Windows OS(FAT32)

This is not the group for your OS. The microsoft.* newsgroup are down the
hall, last door on your left.

Salt_Peter

11/23/2008 1:48:00 AM

0

On Nov 22, 7:11 pm, "David.Cristian1987"
<David.Cristian1...@gmail.com> wrote:
> On Nov 23, 1:24 am, Ian Collins <ian-n...@hotmail.com> wrote:
>
> > David.Cristian1987 wrote:
> > > Hello
>
> > > I am about to start a project and I want to check out some things to
> > > see if it's do-able ...
> > > I have to make a program that can recover some files that were
> > > deleted.
>
> > Stop right there, anything to do with file recovery is filesystem
> > dependent, some don't support it. You'll have to ask on a group for
> > your OS.
>
> > --
> > Ian Collins
>
> I am only interested on Windows OS(FAT32)
>

Anything you need about Windows (or any other specific platform)
doesn't belong here. Like most users of this forum, i'm not interested
in discussing something that is platform specific since C++ is
platform-oblivious. Not to mention that i don't run Windows nor would
i.
Besides, do you not think that you'll get better help in an MS
newsgroup?

[5.9] Which newsgroup should I post my questions?
http://www.parashift.com/c++-faq-lite/how-to-post.ht...

David.Cristian1987

11/23/2008 2:36:00 AM

0

On Nov 23, 3:47 am, Salt_Peter <pj_h...@yahoo.com> wrote:
> On Nov 22, 7:11 pm, "David.Cristian1987"
>
>
>
> <David.Cristian1...@gmail.com> wrote:
> > On Nov 23, 1:24 am, Ian Collins <ian-n...@hotmail.com> wrote:
>
> > > David.Cristian1987 wrote:
> > > > Hello
>
> > > > I am about to start a project and I want to check out some things to
> > > > see if it's do-able ...
> > > > I have to make a program that can recover some files that were
> > > > deleted.
>
> > > Stop right there, anything to do with file recovery is filesystem
> > > dependent, some don't support it.  You'll have to ask on a group for
> > > your OS.
>
> > > --
> > > Ian Collins
>
> > I am only interested on Windows OS(FAT32)
>
> Anything you need about Windows (or any other specific platform)
> doesn't belong here. Like most users of this forum, i'm not interested
> in discussing something that is platform specific since C++ is
> platform-oblivious. Not to mention that i don't run Windows nor would
> i.
> Besides, do you not think that you'll get better help in an MS
> newsgroup?
>
> [5.9] Which newsgroup should I post my questions?http://www.parashift.com/c++-faq-lite/how-to-post.ht...

I understand. I am very sorry.
I thought I would find here some programmers that had this problem on
this c++ forum, rather then one OS specific ...
I will try there. Thanks!

Again very sorry,
David.

Juha Nieminen

11/23/2008 2:17:00 PM

0

David.Cristian1987 wrote:
> I have to make a program that can recover some files that were
> deleted.

Rather than using existing programs which do that? Why?

David.Cristian1987

11/23/2008 5:12:00 PM

0

On Nov 23, 4:17 pm, Juha Nieminen <nos...@thanks.invalid> wrote:
> David.Cristian1987 wrote:
> > I have to make a program that can recover some files that were
> > deleted.
>
>   Rather than using existing programs which do that? Why?

It's a project for a school contest, and the software is not free.

David.

AB

3/25/2010 1:24:00 PM

0

Or, as per your other thread on the same thing (and my response in
there) - just use 'End' and it will stop all routines.

AB

3/25/2010 4:36:00 PM

0

I couldn't agree more with you Chip, especially bearing in mind that
i've learned all my stuff pretty much reading your fantastic site back
and forth.
It's just from what i read in the initial requests i recognized an
issue that i was trying to solve a few years back and 'End' was
exactly what i was after back then and this sounded like the same as
with simple setups/routines that's all you need.