1 /*- 2 * Copyright (c) 2002 Poul-Henning Kamp 3 * Copyright (c) 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7 * and NAI Labs, the Security Research Division of Network Associates, Inc. 8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9 * DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The names of the authors may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $FreeBSD$ 36 */ 37 38 LIST_HEAD(class_list_head, g_class); 39 TAILQ_HEAD(g_tailq_head, g_geom); 40 TAILQ_HEAD(event_tailq_head, g_event); 41 42 extern struct event_tailq_head events; 43 extern int g_debugflags; 44 /* 1 G_T_TOPOLOGY */ 45 /* 2 G_T_BIO */ 46 /* 4 G_T_ACCESS */ 47 /* 8 enable sanity checks */ 48 49 /* 50 * Various internal actions are tracked by tagging g_event[s] onto 51 * an internal eventqueue. 52 */ 53 enum g_events { 54 EV_NEW_CLASS, /* class */ 55 EV_NEW_PROVIDER, /* provider */ 56 EV_SPOILED, /* provider, consumer */ 57 EV_CALL_ME, /* func, arg */ 58 EV_LAST 59 }; 60 61 struct g_event { 62 enum g_events event; 63 TAILQ_ENTRY(g_event) events; 64 struct g_class *class; 65 struct g_geom *geom; 66 struct g_provider *provider; 67 struct g_consumer *consumer; 68 void *arg; 69 g_call_me_t *func; 70 }; 71 72 /* geom_dump.c */ 73 void g_confxml(void *); 74 void g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 75 void g_confdot(void *); 76 void g_conftxt(void *); 77 78 79 /* geom_event.c */ 80 void g_event_init(void); 81 void g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp); 82 void g_run_events(void); 83 84 /* geom_subr.c */ 85 extern struct class_list_head g_classes; 86 extern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down; 87 88 /* geom_io.c */ 89 void g_io_init(void); 90 void g_io_schedule_down(struct thread *tp); 91 void g_io_schedule_up(struct thread *tp); 92 93 /* geom_kern.c / geom_kernsim.c */ 94 void g_init(void); 95