geom_int.h revision 110759
168651Skris/*- 268651Skris * Copyright (c) 2002 Poul-Henning Kamp 368651Skris * Copyright (c) 2002 Networks Associates Technology, Inc. 468651Skris * All rights reserved. 568651Skris * 668651Skris * This software was developed for the FreeBSD Project by Poul-Henning Kamp 768651Skris * and NAI Labs, the Security Research Division of Network Associates, Inc. 868651Skris * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 968651Skris * DARPA CHATS research program. 1068651Skris * 1168651Skris * Redistribution and use in source and binary forms, with or without 1268651Skris * modification, are permitted provided that the following conditions 1368651Skris * are met: 1468651Skris * 1. Redistributions of source code must retain the above copyright 1568651Skris * notice, this list of conditions and the following disclaimer. 1668651Skris * 2. Redistributions in binary form must reproduce the above copyright 1768651Skris * notice, this list of conditions and the following disclaimer in the 18109998Smarkm * documentation and/or other materials provided with the distribution. 1968651Skris * 3. The names of the authors may not be used to endorse or promote 2068651Skris * products derived from this software without specific prior written 2168651Skris * permission. 2268651Skris * 2368651Skris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2468651Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25109998Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2668651Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2768651Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28109998Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2968651Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30109998Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3168651Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3268651Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33109998Smarkm * SUCH DAMAGE. 3468651Skris * 3568651Skris * $FreeBSD: head/sys/geom/geom_int.h 110759 2003-02-12 09:48:27Z phk $ 36109998Smarkm */ 3768651Skris 38109998SmarkmLIST_HEAD(class_list_head, g_class); 39109998SmarkmTAILQ_HEAD(g_tailq_head, g_geom); 4068651SkrisTAILQ_HEAD(event_tailq_head, g_event); 4168651Skris 4268651Skrisextern struct event_tailq_head events; 4368651Skrisextern int g_collectstats; 4468651Skrisextern int g_debugflags; 4568651Skris/* 4668651Skris * 1 G_T_TOPOLOGY 4768651Skris * 2 G_T_BIO 4868651Skris * 4 G_T_ACCESS 4968651Skris * 8 enable sanity checks 5068651Skris * 16 Allow footshooting on rank#1 providers 5168651Skris */ 5268651Skris 5368651Skris/* 5468651Skris * Various internal actions are tracked by tagging g_event[s] onto 55109998Smarkm * an internal eventqueue. 5668651Skris */ 57109998Smarkmenum g_events { 58109998Smarkm EV_NEW_CLASS, /* class */ 5968651Skris EV_NEW_PROVIDER, /* provider */ 6068651Skris EV_SPOILED, /* provider, consumer */ 6168651Skris EV_CALL_ME, /* func, arg */ 6268651Skris EV_LAST 6368651Skris}; 6468651Skris 6568651Skrisstruct g_event { 6668651Skris enum g_events event; 6768651Skris TAILQ_ENTRY(g_event) events; 6868651Skris struct g_class *class; 6968651Skris struct g_geom *geom; 7068651Skris struct g_provider *provider; 7168651Skris struct g_consumer *consumer; 7268651Skris void *arg; 7368651Skris g_call_me_t *func; 7468651Skris}; 7568651Skris 7668651Skris/* 7768651Skris * We actually have a number of drivers sharing the same major number 7868651Skris * so we coordinate the major/minor usage here 7968651Skris */ 8068651Skris#define GEOM_MAJOR 4 8168651Skris#define GEOM_MINOR_STATS 0 8268651Skris#define GEOM_MINOR_PROVIDERS 10 8368651Skris 8468651Skris/* geom_dump.c */ 8568651Skrisvoid g_confxml(void *); 8668651Skrisvoid g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 8768651Skrisvoid g_confdot(void *); 8868651Skrisvoid g_conftxt(void *); 8968651Skris 9068651Skris/* geom_event.c */ 9168651Skrisvoid g_event_init(void); 9268651Skrisvoid g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 9368651Skrisvoid g_run_events(void); 9468651Skris 95109998Smarkm/* geom_subr.c */ 9668651Skrisextern struct class_list_head g_classes; 9768651Skrisextern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 9868651Skris 9968651Skris/* geom_io.c */ 10068651Skrisvoid g_io_init(void); 10168651Skrisvoid g_io_schedule_down(struct thread *tp); 10268651Skrisvoid g_io_schedule_up(struct thread *tp); 10368651Skris 10468651Skris/* geom_kern.c / geom_kernsim.c */ 10568651Skrisvoid g_init(void); 10668651Skris 10768651Skris/* geom_stats.c */ 10868651Skrisvoid g_stat_init(void); 10968651Skrisstruct g_stat *g_stat_new(void *id); 11068651Skrisvoid g_stat_delete(struct g_stat *); 11168651Skris