C++ Code to Access Linux Hard Disk Sectors (with a LoopBack Virtual Hard Disk)
Hi all,
I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it has the following configuration.
Now what I want to do is develop a c++ program to read & write files to this loop back device,which I'm using to simulate an actual hard disk,at the blocks & sectors level. So far I've come up with the following code. But I'm still unable to read files from the hard disk one block at a time.
When I run this Program All what I get is the message for NULL.
"Error In Opening the HardDisk File Retuning Error...".
Could you please help me by pointing what am I doing wrong here ?. So I could open the loopback device as a file an access it at the sectors & block level.
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When we write a programme,we declare variables and compiler allocates memory to them.I want to get access to the physical block number of hard-disk where actually the data is stored by the programme "
Some one help me out... (1 Reply)
When we write a programme,we declare variables and compiler allocates memory to them.I want to get access to the physical block number of hard-disk where actually the data is stored by the programme "
Some one help me out... (3 Replies)
Discussion started by: nagraz007
3 Replies
LEARN ABOUT DEBIAN
linux::distribution::packages
Linux::Distribution::Packages(3pm) User Contributed Perl Documentation Linux::Distribution::Packages(3pm)NAME
Linux::Distribution::Packages - list all packages on various Linux distributions
SYNOPSIS
use Linux::Distribution::Packages qw(distribution_packages distribution_write);
$linux = new Linux::Distribution::Packages({'format' => 'csv', 'output_file' => 'packages.csv'});
$linux->distribution_write();
# Or you can (re)set the options when you write.
$linux->distribution_write({'format' => 'xml', 'output_file' => 'packages.xml'});
# If you want to reload the package data
$linux->distribution_packages();
DESCRIPTION
This is a simple module that uses Linux::Distribution to guess the linux distribution and then uses the correct commands to list all the
packages on the system and then output them in one of three formats: native, csv, and xml.
Distributions currently working: debian, ubuntu, fedora, redhat, suse, gentoo, slackware, redflag.
The module inherits from Linux::Distribution, so can also use its calls.
EXPORT
None by default.
TODO
* Add the capability to correctly get packages for all recognized distributions. * Seperate out parsing from writing. Parse data to hash
and give access to hash. Then write the formatted data from the hash.
AUTHORS
Judith Lebzelter, <judith@osdl.org> Alberto Re, <alberto@accidia.net>
COPYRIGHT AND LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or,
at your option, any later version of Perl 5 you may have available.
perl v5.10.1 2006-04-19 Linux::Distribution::Packages(3pm)