raeding disk block in linux

[kg]

how to read the disk block in linux using c .. and also i want to
display the information like number of sectors in the disk ..number of
free sector .. totaly i want to display the partion informaation

 

[Vladimir Oka]

how to read the disk block in linux using c .. and also i want to
display the information like number of sectors in the disk ..number of
free sector .. totaly i want to display the partion informaation

One of the Linux groups can surely help. Standard C does not provide
any such features. You could also have a look at Linux tools that do
the same thing. Getting their source shoudl be a doddle.

 

[Ico]

how to read the disk block in linux using c .. and also i want to
display the information like number of sectors in the disk ..number of
free sector .. totaly i want to display the partion informaation

In linux, like most unices, the raw disk is available as a special file
in the /dev filesystem. You can use the standard C file I/O functions to
access these files:

#include <stdio.h>

int main(void)
{
FILE *f;
char block[512];
int r;

f = fopen("/dev/hda", "r");
if(f == NULL) exit(EXIT_FAILURE);

r = fread(block, 1, sizeof(block), f);

/* Do something with the data */

return 0;
}

For more information about those special device files and their
contents, you better ask the proper *.linux.* newsgroup.