41 lines
759 B
C++
41 lines
759 B
C++
#include "elfspy/MFile.h"
|
|
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <string>
|
|
|
|
#include "elfspy/Fail.h"
|
|
|
|
namespace spy
|
|
{
|
|
|
|
MFile::MFile(const char* file_name)
|
|
{
|
|
fd_ = open(file_name, O_RDONLY, 0);
|
|
if (fd_ < 0) {
|
|
Fail() << "Cannot open " << file_name;
|
|
}
|
|
struct stat file;
|
|
if (fstat(fd_, &file) < 0) {
|
|
Fail() << "Cannot fstat " << file_name;
|
|
}
|
|
size_ = file.st_size;
|
|
address_ = reinterpret_cast<unsigned char*>(
|
|
mmap(nullptr, size_, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd_, 0));
|
|
if (address_ == MAP_FAILED) {
|
|
Fail() << "Cannot mmap " << file_name;
|
|
}
|
|
}
|
|
|
|
MFile::~MFile()
|
|
{
|
|
munmap(address_, size_);
|
|
close(fd_);
|
|
}
|
|
|
|
} // namespace spy
|