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DEV_MODULE.9freebsd
Langue: en
Version: 306612 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
BSD mandoc
NAME
DEV_MODULE - device driver module declaration macroSYNOPSIS
In sys/param.h In sys/kernel.h In sys/module.h In sys/conf.h Fn DEV_MODULE name modeventhand_t evh void *argDESCRIPTION
The Fn DEV_MODULE macro declares a device driver kernel module. It fills in a Vt moduledata_t structure and then calls Fn DECLARE_MODULE with the correct args, where Fa name is the name of the module and Fa evh (with its argument Fa arg ) is the event handler for the module (refer to DECLARE_MODULE9 for more information). The event handler is supposed to create the device with Fn make_dev on load and to destroy it when it is unloaded using Fn destroy_dev .EXAMPLES
#include <sys/module.h> #include <sys/conf.h> static struct cdevsw foo_devsw = { ... }; static dev_t sdev; static int foo_load(module_t mod, int cmd, void *arg) { int err = 0; switch (cmd) { case MOD_LOAD: sdev = make_dev(&foo_devsw, 0, UID_ROOT, GID_WHEEL, 0600, "foo"); break; /* Success*/ case MOD_UNLOAD: case MOD_SHUTDOWN: destroy_dev(sdev); break; /* Success*/ default: err = EINVAL; break; } return(err); } DEV_MODULE(foo, foo_load, NULL);
SEE ALSO
DECLARE_MODULE9, destroy_dev9, make_dev9, module(9)AUTHORS
This manual page was written by An Alexander Langer Aq alex@FreeBSD.org .Contenus ©2006-2024 Benjamin Poulain
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