geom_int.h revision 112988
123660Speter/*- 225746Speter * Copyright (c) 2002 Poul-Henning Kamp 31573Srgrimes * Copyright (c) 2002 Networks Associates Technology, Inc. 41573Srgrimes * All rights reserved. 525401Sjb * 61573Srgrimes * This software was developed for the FreeBSD Project by Poul-Henning Kamp 71573Srgrimes * and NAI Labs, the Security Research Division of Network Associates, Inc. 81849Swollman * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 914224Speter * DARPA CHATS research program. 101849Swollman * 111573Srgrimes * Redistribution and use in source and binary forms, with or without 121573Srgrimes * modification, are permitted provided that the following conditions 131573Srgrimes * are met: 141573Srgrimes * 1. Redistributions of source code must retain the above copyright 151573Srgrimes * notice, this list of conditions and the following disclaimer. 1625401Sjb * 2. Redistributions in binary form must reproduce the above copyright 1725401Sjb * notice, this list of conditions and the following disclaimer in the 1825736Speter * documentation and/or other materials provided with the distribution. 1925401Sjb * 3. The names of the authors may not be used to endorse or promote 201573Srgrimes * products derived from this software without specific prior written 2125401Sjb * permission. 2225401Sjb * 2325401Sjb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2424454Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2525401Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2625401Sjb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2714224Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2825401Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2925401Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3025401Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3125401Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3214224Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 338021Sache * SUCH DAMAGE. 348021Sache * 3525401Sjb * $FreeBSD: head/sys/geom/geom_int.h 112988 2003-04-02 20:41:18Z phk $ 3625401Sjb */ 3718421Sphk 3823660SpeterLIST_HEAD(class_list_head, g_class); 3925539SdfrTAILQ_HEAD(g_tailq_head, g_geom); 4025539SdfrTAILQ_HEAD(event_tailq_head, g_event); 4125539Sdfr 421573Srgrimesextern struct event_tailq_head events; 4325401Sjbextern int g_collectstats; 4425401Sjbextern int g_debugflags; 4525401Sjb/* 4625401Sjb * 1 G_T_TOPOLOGY 4725401Sjb * 2 G_T_BIO 4825736Speter * 4 G_T_ACCESS 4925736Speter * 8 Enable sanity checks 5025401Sjb * 16 Allow footshooting on rank#1 providers 5125401Sjb * 32 G_T_DETAILS 521573Srgrimes */ 5325401Sjb#define G_F_DISKIOCTL 64 541573Srgrimes#define G_F_CTLDUMP 128 5525401Sjb 5625401Sjb 5725401Sjb/* 5825401Sjb * Various internal actions are tracked by tagging g_event[s] onto 5925401Sjb * an internal eventqueue. 6025401Sjb */ 6125105Sbdeenum g_events { 622366Sbde EV_NEW_CLASS, /* class */ 6325401Sjb EV_NEW_PROVIDER, /* provider */ 6425401Sjb EV_SPOILED, /* provider, consumer */ 6525105Sbde EV_CALL_ME, /* func, arg */ 662366Sbde EV_LAST 6725401Sjb}; 681573Srgrimes 6925401Sjb#define G_N_EVENTREFS 20 7025401Sjb 7125736Speterstruct g_event { 7225736Speter enum g_events event; 7325736Speter TAILQ_ENTRY(g_event) events; 7425105Sbde void *arg; 7525105Sbde g_call_me_t *func; 762366Sbde void *ref[G_N_EVENTREFS]; 7725401Sjb}; 7825401Sjb 7925401Sjb/* 8025105Sbde * We actually have a number of drivers sharing the same major number 8125105Sbde * so we coordinate the major/minor usage here 8225105Sbde */ 832366Sbde#define GEOM_MAJOR 4 8425401Sjb#define GEOM_MINOR_STATS 0 8525401Sjb#define GEOM_MINOR_PROVIDERS 10 8625401Sjb 8725401Sjb/* geom_dump.c */ 8825401Sjbvoid g_confxml(void *, int flag); 8925401Sjbvoid g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 901849Swollmanvoid g_confdot(void *, int flag); 911849Swollmanvoid g_conftxt(void *, int flag); 9225746Speter 9325746Speter/* geom_event.c */ 941849Swollmanvoid g_event_init(void); 951849Swollmanvoid g_post_event(enum g_events ev, ...); 961849Swollmanvoid g_cancel_event(void *ref); 971849Swollmanvoid g_run_events(void); 981849Swollmanvoid g_stall_events(void); 9924522Sachevoid g_release_events(void); 10024522Sache 1011849Swollman/* geom_subr.c */ 10214237Speterextern struct class_list_head g_classes; 10314237Speterextern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 1041849Swollman 10525746Speter/* geom_io.c */ 10613522Snatevoid g_io_init(void); 10713522Snatevoid g_io_schedule_down(struct thread *tp); 10814224Spetervoid g_io_schedule_up(struct thread *tp); 10914224Speter 11011151Sjoerg/* geom_kern.c / geom_kernsim.c */ 1112443Sdgvoid g_init(void); 1128025Sache 11311151Sjoerg/* geom_ctl.c */ 11411151Sjoergvoid g_ctl_init(void); 1151849Swollman