Why are you opening and closing the file every time you do something?
This especially becomes useless:
Code:
/**
Seek out a Particular Block In the Disk
Block_SIZE=512bytes
*/
int seekDisk()
{
cout<<"Seeking the File Disk..."<<endl;
int fd=open(DISK_NAME, O_RDWR);
if(lseek(fd, 0L, SEEK_SET) != 0L)
{
perror("Couldn't seek");
close(fd);
return(1);
}
close(fd);
return 0;
}
...because the seek position gets reset every time you open it anyway. You should open it once and keep using the number it gives you. Your read code would end up looking like int readFromDisk(int fd, char *buffer,int length) { ... } iow exactly like normal read...so you might as well get used to ordinary read call instead.
You should also be doing something more with the number of bytes written and read than just printing it. read() and write() will occasionally surprise you with less than you asked for.
Hi all
I am facing a strange problem.
I am using a sun ultra10 spark machine.
first i took a 20gb IDE hard disk and installed solaris 5.8.
But due to some requirement i have to reinstall the OS but this time solaris 2.6.
and now the hard disk capacity is only showing 8gb.
Where the 12gb... (3 Replies)
I had an issue with a second hard disk in my machine. I have a sparc station running solaris 7. It was working fine but now it wont mount on boot up and when you try to mount it manually it gives an I/O error. I tried a different disk as a control which was fine. What I want to know is if my... (3 Replies)
:eek: I use this Solaris to run CMS a call acounting software package for my job. No one could run reports today because it said the this when you logged on
"The following file systems are low, and could adversely affect server performance:
File system /: 99%full"
Can some one please explain... (9 Replies)
Hi guys i have created a linux machine in virtual box now i want to add some hard disk space into it.
How would i do this.
Please help.
Machine details are as below
# lsb_release -a
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID:... (7 Replies)
hi
I've a fresh installation of SCO 5.0.7 on the IDE hard disk.
For SCSI hard disk I can declare, for example blc disk driver using:
# mkdev hd 0 SCSI-0 0 blc 0but it works for IDE hard disk? (3 Replies)
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
hostname
FBB::Hostname(3bobcat) Host Info FBB::Hostname(3bobcat)NAME
FBB::Hostname - Contains name/address info about a host
SYNOPSIS
#include <bobcat/hostname>
Linking option: -lbobcat
DESCRIPTION
FBB::Hostname objects inherit from Hostent, and offers information about a host, like Hostent. Apart from being initialized by a hostname
or host address, they can also be initialized by a FBB::InetAddress object. Most of the functionality of an FBB::Hostname object is avail-
able through its parent-class FBB::Hostent.
NAMESPACE
FBB
All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.
INHERITS FROM
FBB::Hostent
CONSTRUCTORS
o Hostname():
The default constructor initializes an empty FBB::Hostname object.
o Hostname((std::string const &host)):
This constructor initializes an FBB::Hostname object from a string representing the name or dotted decimal address of a host. An
FBB::Errno object is thrown if the hostname information could not be retrieved.
o Hostname(InetAddress const &inetAddress):
This constructor initializes an FBB::Hostname object from an InetAddress object. An FBB::Errno object is thrown if the hostname
information could not be retrieved. The copy constructor is available.
MEMBER FUNCTIONS
All members of FBB::Hostent are available, as FBB::Hostname inherits from this class. There are no additional members.
EXAMPLE
#include <iostream>
#include <bobcat/hostname>
#include <bobcat/errno>
using namespace std;
using namespace FBB;
int main(int argc, char **argv)
{
while (true)
{
cout << "Enter name or address:
";
string str;
if (!getline(cin, str))
return 0;
if (str == "")
break;
try
{
Hostname h(str);
cout << "Official name:
";
cout << h.hostname() << endl;
cout << "Aliases:
";
for (size_t idx = 0; idx < h.nAliases(); idx++)
cout << h.alias(idx) << " ";
cout << endl;
cout << "Adresses:
";
for (size_t idx = 0; idx < h.nAddresses(); idx++)
cout << h.dottedDecimalAddress(idx) << " ";
cout << endl;
}
catch (Errno const &err)
{
cout << err.why() << endl;
}
}
return 0;
}
FILES
bobcat/hostname - defines the class interface
SEE ALSO bobcat(7), hostent(3bobcat)BUGS
None Reported.
DISTRIBUTION FILES
o bobcat_3.01.00-x.dsc: detached signature;
o bobcat_3.01.00-x.tar.gz: source archive;
o bobcat_3.01.00-x_i386.changes: change log;
o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries;
o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages;
o http://sourceforge.net/projects/bobcat: public archive location;
BOBCAT
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.
COPYRIGHT
This is free software, distributed under the terms of the GNU General Public License (GPL).
AUTHOR
Frank B. Brokken (f.b.brokken@rug.nl).
libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::Hostname(3bobcat)