DragonFly On-Line Manual Pages


MODULE(9)	      DragonFly Kernel Developer's Manual	     MODULE(9)

NAME

module -- structure describing a kernel module

DESCRIPTION

Each module in the kernel is described by a module_t structure. The structure contains the name of the device, a unique ID number, a pointer to an event handler function and to an argument, which is given to the event handler, as well as some kernel internal data. The DECLARE_MODULE(9) macro registers the module with the system. When the module is loaded, the event handler function is called with the what argument set to MOD_LOAD. On unload, what is set to MOD_UNLOAD. When the system is shutting down, what contains the value of MOD_SHUTDOWN.

EXAMPLES

#include <sys/param.h> #include <sys/kernel.h> #include <sys/module.h> static int foo_handler(module_t mod, int /*modeventtype_t*/ what, void *arg); static moduledata_t mod_data= { "foo", foo_handler, 0 }; MODULE_VERSION(foo, 1); MODULE_DEPEND(foo, bar, 1, 3, 4); DECLARE_MODULE(foo, mod_data, SI_SUB_EXEC, SI_ORDER_ANY);

SEE ALSO

DECLARE_MODULE(9), DEV_MODULE(9), DRIVER_MODULE(9), MODULE_DEPEND(9), MODULE_VERSION(9), SYSCALL_MODULE(9) /usr/share/examples/kld

AUTHORS

This man page was written by Alexander Langer <alex@FreeBSD.org>. DragonFly 4.1 March 1, 2001 DragonFly 4.1