145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/*
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* This file is freeware. You are free to use it and add your own
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* license.
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*
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* $FreeBSD$
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*
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/dtrace.h>
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static d_open_t prototype_open;
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static int prototype_unload(void);
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static void prototype_getargdesc(void *, dtrace_id_t, void *, dtrace_argdesc_t *);
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static void prototype_provide(void *, dtrace_probedesc_t *);
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static void prototype_destroy(void *, dtrace_id_t, void *);
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static void prototype_enable(void *, dtrace_id_t, void *);
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static void prototype_disable(void *, dtrace_id_t, void *);
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static void prototype_load(void *);
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static struct cdevsw prototype_cdevsw = {
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.d_version = D_VERSION,
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.d_open = prototype_open,
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.d_name = "prototype",
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};
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static dtrace_pattr_t prototype_attr = {
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{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },
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{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN },
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{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },
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{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },
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{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },
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};
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static dtrace_pops_t prototype_pops = {
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.dtps_provide = prototype_provide,
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.dtps_provide_module = NULL,
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.dtps_enable = prototype_enable,
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.dtps_disable = prototype_disable,
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.dtps_suspend = NULL,
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.dtps_resume = NULL,
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.dtps_getargdesc = prototype_getargdesc,
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.dtps_getargval = NULL,
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.dtps_usermode = NULL,
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.dtps_destroy = prototype_destroy
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};
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static struct cdev *prototype_cdev;
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static dtrace_provider_id_t prototype_id;
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static void
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prototype_getargdesc(void *arg, dtrace_id_t id, void *parg, dtrace_argdesc_t *desc)
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{
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}
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static void
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prototype_provide(void *arg, dtrace_probedesc_t *desc)
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{
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}
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static void
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prototype_destroy(void *arg, dtrace_id_t id, void *parg)
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{
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}
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static void
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prototype_enable(void *arg, dtrace_id_t id, void *parg)
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{
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}
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static void
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prototype_disable(void *arg, dtrace_id_t id, void *parg)
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{
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}
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static void
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prototype_load(void *dummy)
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{
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/* Create the /dev/dtrace/prototype entry. */
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prototype_cdev = make_dev(&prototype_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600,
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"dtrace/prototype");
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if (dtrace_register("prototype", &prototype_attr, DTRACE_PRIV_USER,
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NULL, &prototype_pops, NULL, &prototype_id) != 0)
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return;
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}
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static int
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prototype_unload()
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{
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int error = 0;
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if ((error = dtrace_unregister(prototype_id)) != 0)
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return (error);
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destroy_dev(prototype_cdev);
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return (error);
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}
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static int
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prototype_modevent(module_t mod __unused, int type, void *data __unused)
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{
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int error = 0;
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switch (type) {
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case MOD_LOAD:
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break;
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case MOD_UNLOAD:
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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error = EOPNOTSUPP;
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break;
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}
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return (error);
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}
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static int
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prototype_open(struct cdev *dev __unused, int oflags __unused, int devtype __unused, struct thread *td __unused)
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{
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return (0);
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}
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SYSINIT(prototype_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, prototype_load, NULL);
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SYSUNINIT(prototype_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, prototype_unload, NULL);
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DEV_MODULE(prototype, prototype_modevent, NULL);
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MODULE_VERSION(prototype, 1);
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MODULE_DEPEND(prototype, dtrace, 1, 1, 1);
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MODULE_DEPEND(prototype, opensolaris, 1, 1, 1);
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