geom_int.h revision 110540
178344Sobrien/*- 278344Sobrien * Copyright (c) 2002 Poul-Henning Kamp 398184Sgordon * Copyright (c) 2002 Networks Associates Technology, Inc. 478344Sobrien * All rights reserved. 578344Sobrien * 678344Sobrien * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7193197Sdougb * and NAI Labs, the Security Research Division of Network Associates, Inc. 898184Sgordon * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9180564Sdougb * DARPA CHATS research program. 1078344Sobrien * 1178344Sobrien * Redistribution and use in source and binary forms, with or without 1278344Sobrien * modification, are permitted provided that the following conditions 1378344Sobrien * are met: 1498184Sgordon * 1. Redistributions of source code must retain the above copyright 1598585Sdougb * notice, this list of conditions and the following disclaimer. 16124618Smtm * 2. Redistributions in binary form must reproduce the above copyright 17124618Smtm * notice, this list of conditions and the following disclaimer in the 18163487Sflz * documentation and/or other materials provided with the distribution. 1978344Sobrien * 3. The names of the authors may not be used to endorse or promote 20104980Sschweikh * products derived from this software without specific prior written 2198184Sgordon * permission. 22124618Smtm * 23124618Smtm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24124618Smtm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2598486Sdougb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26124618Smtm * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27124618Smtm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28124618Smtm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29124618Smtm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30124618Smtm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3198184Sgordon * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32124618Smtm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33124618Smtm * SUCH DAMAGE. 34124618Smtm * 35124618Smtm * $FreeBSD: head/sys/geom/geom_int.h 110540 2003-02-08 12:30:12Z phk $ 36172822Smtm */ 37124618Smtm 38124618SmtmLIST_HEAD(class_list_head, g_class); 3998184SgordonTAILQ_HEAD(g_tailq_head, g_geom); 40124618SmtmTAILQ_HEAD(event_tailq_head, g_event); 41124618Smtm 42124618Smtmextern struct event_tailq_head events; 43124618Smtmextern int g_collectstats; 44124618Smtmextern int g_debugflags; 45124618Smtm/* 1 G_T_TOPOLOGY */ 4698184Sgordon/* 2 G_T_BIO */ 47124618Smtm/* 4 G_T_ACCESS */ 48172822Smtm/* 8 enable sanity checks */ 49172977Smtm 50124618Smtm/* 5198184Sgordon * Various internal actions are tracked by tagging g_event[s] onto 5298184Sgordon * an internal eventqueue. 5398184Sgordon */ 5498184Sgordonenum g_events { 5598184Sgordon EV_NEW_CLASS, /* class */ 5678344Sobrien EV_NEW_PROVIDER, /* provider */ 57 EV_SPOILED, /* provider, consumer */ 58 EV_CALL_ME, /* func, arg */ 59 EV_LAST 60}; 61 62struct g_event { 63 enum g_events event; 64 TAILQ_ENTRY(g_event) events; 65 struct g_class *class; 66 struct g_geom *geom; 67 struct g_provider *provider; 68 struct g_consumer *consumer; 69 void *arg; 70 g_call_me_t *func; 71}; 72 73/* 74 * We actually have a number of drivers sharing the same major number 75 * so we coordinate the major/minor usage here 76 */ 77#define GEOM_MAJOR 4 78#define GEOM_MINOR_STATS 0 79#define GEOM_MINOR_PROVIDERS 10 80 81/* geom_dump.c */ 82void g_confxml(void *); 83void g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 84void g_confdot(void *); 85void g_conftxt(void *); 86 87/* geom_event.c */ 88void g_event_init(void); 89void g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 90void g_run_events(void); 91 92/* geom_subr.c */ 93extern struct class_list_head g_classes; 94extern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 95 96/* geom_io.c */ 97void g_io_init(void); 98void g_io_schedule_down(struct thread *tp); 99void g_io_schedule_up(struct thread *tp); 100 101/* geom_kern.c / geom_kernsim.c */ 102void g_init(void); 103