module_depend(9) [freebsd man page]

MODULE_DEPEND(9)					   BSD Kernel Developer's Manual					  MODULE_DEPEND(9)

NAME

     MODULE_DEPEND -- set kernel module dependencies

SYNOPSIS

     #include <sys/param.h>
     #include <sys/module.h>

     MODULE_DEPEND(name, moddepend, int minversion, int prefversion, int maxversion);

DESCRIPTION

     The MODULE_DEPEND() macro sets a dependency on another kernel module with name moddepend, which has registered its version with
     MODULE_VERSION().

     The MODULE_DEPEND() macro provides hints to the kernel loader(8) and to the kernel linker to ensure that the named dependency is loaded prior
     to the existing module.  It does not change or dictate the order in which modules are initialized at runtime.

     Three versions must be specified for moddepend:

     minversion   The minimum version on which the current module can depend.

     maxversion   The maximum version on which the current module can depend.

     prefversion  The preferred version on which the current module can depend.

EXAMPLES

     MODULE_DEPEND(foo, bar, 1, 3, 4);

SEE ALSO

     DECLARE_MODULE(9), module(9), MODULE_VERSION(9)

AUTHORS

     This manual page was written by Alexander Langer <alex@FreeBSD.org>.

BSD
								 January 11, 2005							       BSD

DECLARE_MODULE(9)					   BSD Kernel Developer's Manual					 DECLARE_MODULE(9)

NAME

     DECLARE_MODULE -- kernel module declaration macro

SYNOPSIS

     #include <sys/param.h>
     #include <sys/kernel.h>
     #include <sys/module.h>

     DECLARE_MODULE(name, moduledata_t data, sub, order);

DESCRIPTION

     The DECLARE_MODULE() macro declares a generic kernel module.  It is used to register the module with the system, using the SYSINIT() macro.
     DECLARE_MODULE() is usually used within other macros, such as DRIVER_MODULE(9), DEV_MODULE(9) and SYSCALL_MODULE(9).  Of course, it can also
     be called directly, for example in order to implement dynamic sysctls.

     The arguments it expects are:

     name    The module name, which will be used in the SYSINIT() call to identify the module.

     data    A moduledata_t structure, which contains two main items, the official name of the module name, which will be used in the module_t
	     structure and a pointer to the event handler function of type modeventhand_t.

     sub     An argument directed to the SYSINIT() macro.  Valid values for this are contained in the sysinit_sub_id enumeration (see
	     <sys/kernel.h>) and specify the type of system startup interfaces.  The DRIVER_MODULE(9) macro uses a value of SI_SUB_DRIVERS here
	     for example, since these modules contain a driver for a device.  For kernel modules that are loaded at runtime, a value of
	     SI_SUB_EXEC is common.

     order   An argument for SYSINIT().  It represents the KLDs order of initialization within the subsystem.  Valid values are defined in the
	     sysinit_elem_order enumeration (<sys/kernel.h>).

SEE ALSO

     DEV_MODULE(9), DRIVER_MODULE(9), module(9), SYSCALL_MODULE(9)

     /usr/include/sys/kernel.h, /usr/share/examples/kld

AUTHORS

     This manual page was written by Alexander Langer <alex@FreeBSD.org>, inspired by the KLD Facility Programming Tutorial by Andrew Reiter
     <arr@watson.org>.

BSD
								  January 6, 2005							       BSD