geom_int.h revision 113926
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 113926 2003-04-23 19:15:27Z 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 event_tailq_head events; 43110523Sphkextern int g_collectstats; 4493250Sphkextern int g_debugflags; 45110759Sphk/* 46110759Sphk * 1 G_T_TOPOLOGY 47110759Sphk * 2 G_T_BIO 48110759Sphk * 4 G_T_ACCESS 49112476Sphk * 8 Enable sanity checks 50110759Sphk * 16 Allow footshooting on rank#1 providers 51112476Sphk * 32 G_T_DETAILS 52110759Sphk */ 53112476Sphk#define G_F_DISKIOCTL 64 54112876Sphk#define G_F_CTLDUMP 128 5593250Sphk 56112476Sphk 5793250Sphk/* 5893250Sphk * Various internal actions are tracked by tagging g_event[s] onto 5993250Sphk * an internal eventqueue. 6093250Sphk */ 6193250Sphkenum g_events { 6293250Sphk EV_NEW_CLASS, /* class */ 6393250Sphk EV_NEW_PROVIDER, /* provider */ 6493250Sphk EV_SPOILED, /* provider, consumer */ 65104056Sphk EV_CALL_ME, /* func, arg */ 6693250Sphk EV_LAST 6793250Sphk}; 6893250Sphk 69112988Sphk#define G_N_EVENTREFS 20 70112988Sphk 7193250Sphkstruct g_event { 7293250Sphk enum g_events event; 7393250Sphk TAILQ_ENTRY(g_event) events; 74104056Sphk void *arg; 75104056Sphk g_call_me_t *func; 76112988Sphk void *ref[G_N_EVENTREFS]; 7793250Sphk}; 7893250Sphk 79110540Sphk/* 80110540Sphk * We actually have a number of drivers sharing the same major number 81110540Sphk * so we coordinate the major/minor usage here 82110540Sphk */ 83110540Sphk#define GEOM_MAJOR 4 84110540Sphk#define GEOM_MINOR_STATS 0 85110540Sphk#define GEOM_MINOR_PROVIDERS 10 86110540Sphk 8793250Sphk/* geom_dump.c */ 88112988Sphkvoid g_confxml(void *, int flag); 89104452Sphkvoid g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 90112988Sphkvoid g_confdot(void *, int flag); 91112988Sphkvoid g_conftxt(void *, int flag); 9293250Sphk 9393250Sphk/* geom_event.c */ 9493250Sphkvoid g_event_init(void); 95112988Sphkvoid g_post_event(enum g_events ev, ...); 9693250Sphkvoid g_run_events(void); 97112517Sphkvoid g_stall_events(void); 98112517Sphkvoid g_release_events(void); 9993250Sphk 10093250Sphk/* geom_subr.c */ 10193774Sphkextern struct class_list_head g_classes; 10293250Sphkextern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 10393250Sphk 10493250Sphk/* geom_io.c */ 10593250Sphkvoid g_io_init(void); 10693250Sphkvoid g_io_schedule_down(struct thread *tp); 10793250Sphkvoid g_io_schedule_up(struct thread *tp); 10893250Sphk 10993250Sphk/* geom_kern.c / geom_kernsim.c */ 11093250Sphkvoid g_init(void); 111113926Sphkextern int g_shutdown; 112112534Sphk 113112534Sphk/* geom_ctl.c */ 114112534Sphkvoid g_ctl_init(void); 115