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/*
* rwKernel.cpp:
* written by palmers / teso
*/
#include <rwKernel.hpp>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <iostream>
bool rwKernel::openFile (int w)
{
int a = 0;
void *tmp = NULL;
char *file = NULL;
if (w == DEVMEM)
file = "/dev/mem";
else if (w == PROCKCORE)
file = "/proc/kcore";
if ((a = open (file, O_RDWR)) <= 0)
{
cerr << "open error" << endl;
abort ();
}
if ((tmp = mmap (NULL, 0x40000000, PROT_READ | \
PROT_WRITE, MAP_SHARED, a, 0xc0000000 - mem_conf)) == (void *) -1)
{
cerr << "mmap failed" << endl;
abort ();
}
fd = (char *) tmp;
return true;
}
void rwKernel::setOffset (int x)
{
switch (x)
{
case CONF_1GB:
mem_conf = 0xC0000000;
break;
case CONF_2GB:
mem_conf = 0x80000000;
break;
case CONF_3GB:
mem_conf = 0x40000000;
break;
case IGNORE:
mem_conf = 0xC0000000;
break;
default:
mem_conf = 0xC0000000;
break;
}
}
void rwKernel::closeFile ()
{
munmap (fd, 0x40000000);
}
rwKernel::rwKernel ()
{
setOffset (CONF_1GB);
openFile (DEVMEM);
}
rwKernel::rwKernel (int file, int off)
{
if (file == PROCKCORE)
off = IGNORE;
setOffset (off);
openFile (file);
}
rwKernel::~rwKernel ()
{
closeFile ();
}
void rwKernel::read (unsigned char *dest, unsigned int len, \
unsigned int offset)
{
offset -= mem_conf;
copy (fd + offset, fd + offset + len, dest);
}
void rwKernel::write (unsigned char *src, unsigned int len, \
unsigned int offset)
{
offset -= mem_conf;
copy (src, src + len, fd + offset);
}
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