#include <sys/modctl.h>
#include <sys/cmn_err.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>

extern struct mod_ops mod_miscops;
extern void cmn_err(int, const char *, ...);
extern int mod_install(struct modlinkage *modlinkage);
extern int mod_remove(struct modlinkage *modlinkage);
extern int mod_info(struct modlinkage *modlinkage,
                    struct modinfo *modinfo);

static struct modldrv modldrv = {
  &mod_miscops,
  "hello module",
  NULL
};

static struct modlinkage modlinkage = {
  MODREV_1, (void *)&modldrv, NULL
};

int _init(void) {
  cmn_err(CE_WARN, "Hello Module is loaded.");
  return (mod_install(&modlinkage));
}

int _fini(void) {
  cmn_err(CE_WARN, "Hello Module has unloaded.");
  return (mod_remove(&modlinkage));
}

int _info(struct modinfo *modinfop) {
  return (mod_info(&modlinkage, modinfop));
}