#include "IOCTL.h"
#include "SharedBuffer.h"

#include <cstring>
#include <dlfcn.h>
#include <string>
#include <sys/types.h>
#include <unistd.h>

SharedFB fb(default_fb_name);

extern "C" {

int
open64(const char* pathname, int flags, mode_t mode = 0) {
  if (pathname == std::string("/dev/fb0")) {
    return fb.fd;
  }

  static const auto func_open =
    (int (*)(const char*, int, mode_t))dlsym(RTLD_NEXT, "open64");

  return func_open(pathname, flags, mode);
}

int
open(const char* pathname, int flags, mode_t mode = 0) {
  if (pathname == std::string("/dev/fb0")) {
    return fb.fd;
  }

  static const auto func_open =
    (int (*)(const char*, int, mode_t))dlsym(RTLD_NEXT, "open");

  return func_open(pathname, flags, mode);
}

int
close(int fd) {
  if (fd == fb.fd) {
    return 0;
  }

  static const auto func_close = (int (*)(int))dlsym(RTLD_NEXT, "close");
  return func_close(fd);
}

int
ioctl(int fd, unsigned long request, char* ptr) {
  if (fd == fb.fd) {
    return handleIOCTL(request, ptr);
  }

  static auto func_ioctl =
    (int (*)(int, unsigned long request, ...))dlsym(RTLD_NEXT, "ioctl");

  return func_ioctl(fd, request, ptr);
}
}