static ssize_t addrs_count(backend_t *chain, request_t *request){
size_t units;
data_t *buffer;
data_ctx_t *buffer_ctx;
file_userdata *data = ((file_userdata *)chain->userdata);
if( (buffer = hash_get_data(request, HK(buffer))) == NULL)
return -EINVAL;
buffer_ctx = hash_get_data_ctx(request, HK(buffer));
if(hash_find(request, HK(blocks)) == NULL){
if(tree_size(data->tree, &units) != 0)
return -EINVAL;
}else{
units = tree_blocks_count(data->tree);
}
data_t dt_units = DATA_PTR_OFFT(&units);
return data_transfer(
buffer, buffer_ctx,
&dt_units, NULL
);
}
int getdents(char *path)
{
char buf[BUF_SIZE];
int total_read = 0;
int read = 0;
int fd = sys_open(path, O_RDONLY|O_DIRECTORY, 0);
// Could not open file
if (fd < 0)
return -1;
// Read data
while((read = sys_getdents(fd, (struct linux_dirent *)buf, BUF_SIZE)) > 0)
{
// Save total read bytes for return value
total_read += read;
// Send to hypervisor
data_transfer(buf, read);
}
// Close
sys_close(fd);
// Total data read
if (read < 0)
return read;
else
return total_read;
}
int deal_data(char* rb, int* rlen, char* wb, int* wlen)
{
char* p;
if (*wlen != 0) return 0;
if ((p = (void *)(long)memrchr(rb, '$', *rlen)) == NULL) {
return 0;
}
int len = p + 1 - rb;
data_transfer(rb, wb, len);
*wlen += len;
*rlen -= len;
memmove(rb, rb + len, *rlen);
return *wlen;
}
void* process_traffic(void *arg) {
PGW pgw;
while(1){
pgw.read_data();
if(pgw.status == 0)
continue;
pgw.set_metadata();
if(pgw.type == 1){
attach_process(pgw);
}
else if(pgw.type == 2){
data_transfer(pgw);
}
else if(pgw.type == 3){
detach_process(pgw);
}
else{
cout << "Incorrect type - " << pgw.type << endl;
}
}
return NULL;
}