geom_int.h revision 93774
193250Sphk/*- 293250Sphk * Copyright (c) 2002 Poul-Henning Kamp 393250Sphk * Copyright (c) 2002 Networks Associates Technology, Inc. 493250Sphk * All rights reserved. 593250Sphk * 693250Sphk * This software was developed for the FreeBSD Project by Poul-Henning Kamp 793250Sphk * and NAI Labs, the Security Research Division of Network Associates, Inc. 893250Sphk * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 993250Sphk * DARPA CHATS research program. 1093250Sphk * 1193250Sphk * Redistribution and use in source and binary forms, with or without 1293250Sphk * modification, are permitted provided that the following conditions 1393250Sphk * are met: 1493250Sphk * 1. Redistributions of source code must retain the above copyright 1593250Sphk * notice, this list of conditions and the following disclaimer. 1693250Sphk * 2. Redistributions in binary form must reproduce the above copyright 1793250Sphk * notice, this list of conditions and the following disclaimer in the 1893250Sphk * documentation and/or other materials provided with the distribution. 1993250Sphk * 3. The names of the authors may not be used to endorse or promote 2093250Sphk * products derived from this software without specific prior written 2193250Sphk * permission. 2293250Sphk * 2393250Sphk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2493250Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2593250Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2693250Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2793250Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2893250Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2993250Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3093250Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3193250Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3293250Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3393250Sphk * SUCH DAMAGE. 3493250Sphk * 3593250Sphk * $FreeBSD: head/sys/geom/geom_int.h 93774 2002-04-04 09:41:47Z phk $ 3693250Sphk */ 3793250Sphk 3893250SphkLIST_HEAD(class_list_head, g_class); 3993250SphkTAILQ_HEAD(g_tailq_head, g_geom); 4093250SphkTAILQ_HEAD(event_tailq_head, g_event); 4193250Sphk 4293250Sphkextern struct g_tailq_head geoms; 4393250Sphkextern struct event_tailq_head events; 4493250Sphkextern int g_debugflags; 4593250Sphk 4693250Sphk/* 4793250Sphk * Various internal actions are tracked by tagging g_event[s] onto 4893250Sphk * an internal eventqueue. 4993250Sphk */ 5093250Sphkenum g_events { 5193250Sphk EV_NEW_CLASS, /* class */ 5293250Sphk EV_NEW_PROVIDER, /* provider */ 5393250Sphk EV_SPOILED, /* provider, consumer */ 5493250Sphk EV_LAST 5593250Sphk}; 5693250Sphk 5793250Sphkstruct g_event { 5893250Sphk enum g_events event; 5993250Sphk TAILQ_ENTRY(g_event) events; 6093250Sphk struct g_class *class; 6193250Sphk struct g_geom *geom; 6293250Sphk struct g_provider *provider; 6393250Sphk struct g_consumer *consumer; 6493250Sphk}; 6593250Sphk 6693250Sphk/* geom_dump.c */ 6793250Sphkstruct sbuf * g_conf(void); 6893250Sphkstruct sbuf * g_conf_specific(struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 6993250Sphkstruct sbuf * g_confdot(void); 7093250Sphk 7193250Sphk 7293250Sphk/* geom_event.c */ 7393250Sphkvoid g_event_init(void); 7493250Sphkvoid g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 7593250Sphkvoid g_run_events(void); 7693250Sphk 7793250Sphk/* geom_subr.c */ 7893774Sphkextern struct class_list_head g_classes; 7993250Sphkextern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 8093250Sphk 8193250Sphk/* geom_io.c */ 8293250Sphkvoid g_io_init(void); 8393250Sphkvoid g_io_schedule_down(struct thread *tp); 8493250Sphkvoid g_io_schedule_up(struct thread *tp); 8593250Sphk 8693250Sphk/* geom_kern.c / geom_kernsim.c */ 8793250Sphkvoid g_init(void); 88