FreeBSD/Linux Kernel Cross Reference
sys/geom/geom_int.h

     /*-
      * Copyright (c) 2002 Poul-Henning Kamp
      * Copyright (c) 2002 Networks Associates Technology, Inc.
      * All rights reserved.
      *
      * This software was developed for the FreeBSD Project by Poul-Henning Kamp
      * and NAI Labs, the Security Research Division of Network Associates, Inc.
      * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
      * DARPA CHATS research program.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The names of the authors may not be used to endorse or promote
     *    products derived from this software without specific prior written
     *    permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/5.0/sys/geom/geom_int.h 106101 2002-10-28 22:43:54Z phk $
     */
    
    LIST_HEAD(class_list_head, g_class);
    TAILQ_HEAD(g_tailq_head, g_geom);
    TAILQ_HEAD(event_tailq_head, g_event);
    
    extern struct event_tailq_head events;
    extern int g_debugflags;
    /* 1    G_T_TOPOLOGY            */
    /* 2    G_T_BIO                 */
    /* 4    G_T_ACCESS              */
    /* 8    enable sanity checks    */
    
    /*
     * Various internal actions are tracked by tagging g_event[s] onto
     * an internal eventqueue.
     */
    enum g_events {
            EV_NEW_CLASS,           /* class */
            EV_NEW_PROVIDER,        /* provider */
            EV_SPOILED,             /* provider, consumer */
            EV_CALL_ME,             /* func, arg */
            EV_LAST
    };
    
    struct g_event {
            enum g_events           event;
            TAILQ_ENTRY(g_event)    events;
            struct g_class          *class;
            struct g_geom           *geom;
            struct g_provider       *provider;
            struct g_consumer       *consumer;
            void                    *arg;
            g_call_me_t             *func;
    };
    
    /* geom_dump.c */
    void g_confxml(void *);
    void g_conf_specific(struct sbuf *sb, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp);
    void g_confdot(void *);
    void g_conftxt(void *);
    
    
    /* geom_event.c */
    void g_event_init(void);
    void g_post_event(enum g_events ev, struct g_class *mp, struct g_geom *gp, struct g_provider *pp, struct g_consumer *cp);
    void g_run_events(void);
    
    /* geom_subr.c */
    extern struct class_list_head g_classes;
    extern char *g_wait_event, *g_wait_sim, *g_wait_up, *g_wait_down;
    
    /* geom_io.c */
    void g_io_init(void);
    void g_io_schedule_down(struct thread *tp);
    void g_io_schedule_up(struct thread *tp);
    
    /* geom_kern.c / geom_kernsim.c */
    void g_init(void);

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