osd.h revision 188894
1122394Sharti/*- 2122394Sharti * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3122394Sharti * All rights reserved. 4122394Sharti * 5122394Sharti * Redistribution and use in source and binary forms, with or without 6122394Sharti * modification, are permitted provided that the following conditions 7133211Sharti * are met: 8133211Sharti * 1. Redistributions of source code must retain the above copyright 9133211Sharti * notice, this list of conditions and the following disclaimer. 10133211Sharti * 2. Redistributions in binary form must reproduce the above copyright 11133211Sharti * notice, this list of conditions and the following disclaimer in the 12133211Sharti * documentation and/or other materials provided with the distribution. 13122394Sharti * 14122394Sharti * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15122394Sharti * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16133211Sharti * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17133211Sharti * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18133211Sharti * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19133211Sharti * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20133211Sharti * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21133211Sharti * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22133211Sharti * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23133211Sharti * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24133211Sharti * SUCH DAMAGE. 25133211Sharti * 26133211Sharti * $FreeBSD: head/sys/sys/osd.h 188894 2009-02-21 11:15:38Z jamie $ 27133211Sharti */ 28122394Sharti 29156066Sharti#ifndef _SYS_OSD_H_ 30122394Sharti#define _SYS_OSD_H_ 31122394Sharti 32122394Sharti#include <sys/queue.h> 33122394Sharti 34122394Sharti/* 35124861Sharti * Lock key: 36150920Sharti * (c) container lock (e.g. jail's pr_mtx) and/or osd_object_lock 37122394Sharti * (l) osd_list_lock 38122394Sharti */ 39122394Shartistruct osd { 40122394Sharti u_int osd_nslots; /* (c) */ 41122394Sharti void **osd_slots; /* (c) */ 42122394Sharti LIST_ENTRY(osd) osd_next; /* (l) */ 43122394Sharti}; 44122394Sharti 45122394Sharti#ifdef _KERNEL 46122394Sharti 47122394Sharti#define OSD_THREAD 0 48122394Sharti#define OSD_JAIL 1 49122394Sharti 50145557Sharti#define OSD_FIRST OSD_THREAD 51145557Sharti#define OSD_LAST OSD_JAIL 52145557Sharti 53145557Shartitypedef void (*osd_destructor_t)(void *value); 54145557Shartitypedef int (*osd_method_t)(void *obj, void *data); 55156066Sharti 56122394Shartiint osd_register(u_int type, osd_destructor_t destructor, 57122394Sharti osd_method_t *methods); 58122394Shartivoid osd_deregister(u_int type, u_int slot); 59122394Sharti 60122394Shartiint osd_set(u_int type, struct osd *osd, u_int slot, void *value); 61122394Shartivoid *osd_get(u_int type, struct osd *osd, u_int slot); 62122394Shartivoid osd_del(u_int type, struct osd *osd, u_int slot); 63122394Shartiint osd_call(u_int type, u_int method, void *obj, void *data); 64146525Sharti 65146525Shartivoid osd_exit(u_int type, struct osd *osd); 66122394Sharti 67122394Sharti#define osd_thread_register(destructor) \ 68122394Sharti osd_register(OSD_THREAD, (destructor), NULL) 69122394Sharti#define osd_thread_deregister(slot) \ 70122394Sharti osd_deregister(OSD_THREAD, (slot)) 71122394Sharti#define osd_thread_set(td, slot, value) \ 72122394Sharti osd_set(OSD_THREAD, &(td)->td_osd, (slot), (value)) 73122394Sharti#define osd_thread_get(td, slot) \ 74122394Sharti osd_get(OSD_THREAD, &(td)->td_osd, (slot)) 75122394Sharti#define osd_thread_del(td, slot) do { \ 76122394Sharti KASSERT((td) == curthread, ("Not curthread.")); \ 77122394Sharti osd_del(OSD_THREAD, &(td)->td_osd, (slot)); \ 78122394Sharti} while (0) 79122394Sharti#define osd_thread_call(td, method, data) \ 80122394Sharti osd_call(OSD_THREAD, (method), (td), (data)) 81122394Sharti#define osd_thread_exit(td) \ 82122394Sharti osd_exit(OSD_THREAD, &(td)->td_osd) 83122394Sharti 84122394Sharti#define osd_jail_register(destructor) \ 85122394Sharti osd_register(OSD_JAIL, (destructor), NULL) 86124861Sharti#define osd_jail_deregister(slot) \ 87122394Sharti osd_deregister(OSD_JAIL, (slot)) 88122394Sharti#define osd_jail_set(pr, slot, value) \ 89122394Sharti osd_set(OSD_JAIL, &(pr)->pr_osd, (slot), (value)) 90122394Sharti#define osd_jail_get(pr, slot) \ 91122394Sharti osd_get(OSD_JAIL, &(pr)->pr_osd, (slot)) 92122394Sharti#define osd_jail_del(pr, slot) \ 93122394Sharti osd_del(OSD_JAIL, &(pr)->pr_osd, (slot)) 94122394Sharti#define osd_jail_call(pr, method, data) \ 95122394Sharti osd_call(OSD_JAIL, (method), (pr), (data)) 96122394Sharti#define osd_jail_exit(pr) \ 97122394Sharti osd_exit(OSD_JAIL, &(pr)->pr_osd) 98122394Sharti 99122394Sharti#endif /* _KERNEL */ 100122394Sharti 101122394Sharti#endif /* !_SYS_OSD_H_ */ 102122394Sharti