#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <unistd.h>

#include <hardware/interfaces.h>

extern const char *device_root;

int hw_device_open(const char *path, size_t path_len) {
  int sock;
  if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
    perror(NULL);
    exit(-1);
  }
  struct sockaddr_un address;
  address.sun_family = AF_UNIX;
  snprintf(address.sun_path, sizeof(address.sun_path), "%s%.*s", device_root,
           path_len, path);
  if (connect(sock, (struct sockaddr *)&address, sizeof(address)) != 0) {
    perror(NULL);
    exit(-1);
  }
  return sock;
}