geom_int.h revision 104056
1/*- 2 * Copyright (c) 2002 Poul-Henning Kamp 3 * Copyright (c) 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7 * and NAI Labs, the Security Research Division of Network Associates, Inc. 8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9 * DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The names of the authors may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD: head/sys/geom/geom_int.h 104056 2002-09-27 20:38:36Z phk $ 36 */ 37 38LIST_HEAD(class_list_head, g_class); 39TAILQ_HEAD(g_tailq_head, g_geom); 40TAILQ_HEAD(event_tailq_head, g_event); 41 42extern struct g_tailq_head geoms; 43extern struct event_tailq_head events; 44extern int g_debugflags; 45 46/* 47 * Various internal actions are tracked by tagging g_event[s] onto 48 * an internal eventqueue. 49 */ 50enum g_events { 51 EV_NEW_CLASS, /* class */ 52 EV_NEW_PROVIDER, /* provider */ 53 EV_SPOILED, /* provider, consumer */ 54 EV_CALL_ME, /* func, arg */ 55 EV_LAST 56}; 57 58struct g_event { 59 enum g_events event; 60 TAILQ_ENTRY(g_event) events; 61 struct g_class *class; 62 struct g_geom *geom; 63 struct g_provider *provider; 64 struct g_consumer *consumer; 65 void *arg; 66 g_call_me_t *func; 67}; 68 69/* geom_dump.c */ 70struct sbuf * g_conf(void); 71struct sbuf * g_conf_specific(struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 72struct sbuf * g_confdot(void); 73 74 75/* geom_event.c */ 76void g_event_init(void); 77void g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 78void g_run_events(void); 79 80/* geom_subr.c */ 81extern struct class_list_head g_classes; 82extern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 83 84/* geom_io.c */ 85void g_io_init(void); 86void g_io_schedule_down(struct thread *tp); 87void g_io_schedule_up(struct thread *tp); 88 89/* geom_kern.c / geom_kernsim.c */ 90void g_init(void); 91