1*1eaf0ac3Slogwang /*- 2*1eaf0ac3Slogwang * Copyright (c) 2007 Pawel Jakub Dawidek <[email protected]> 3*1eaf0ac3Slogwang * All rights reserved. 4*1eaf0ac3Slogwang * 5*1eaf0ac3Slogwang * Redistribution and use in source and binary forms, with or without 6*1eaf0ac3Slogwang * modification, are permitted provided that the following conditions 7*1eaf0ac3Slogwang * are met: 8*1eaf0ac3Slogwang * 1. Redistributions of source code must retain the above copyright 9*1eaf0ac3Slogwang * notice, this list of conditions and the following disclaimer. 10*1eaf0ac3Slogwang * 2. Redistributions in binary form must reproduce the above copyright 11*1eaf0ac3Slogwang * notice, this list of conditions and the following disclaimer in the 12*1eaf0ac3Slogwang * documentation and/or other materials provided with the distribution. 13*1eaf0ac3Slogwang * 14*1eaf0ac3Slogwang * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15*1eaf0ac3Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16*1eaf0ac3Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17*1eaf0ac3Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18*1eaf0ac3Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19*1eaf0ac3Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20*1eaf0ac3Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21*1eaf0ac3Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22*1eaf0ac3Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23*1eaf0ac3Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24*1eaf0ac3Slogwang * SUCH DAMAGE. 25*1eaf0ac3Slogwang * 26*1eaf0ac3Slogwang * $FreeBSD$ 27*1eaf0ac3Slogwang */ 28*1eaf0ac3Slogwang 29*1eaf0ac3Slogwang #ifndef _SYS_OSD_H_ 30*1eaf0ac3Slogwang #define _SYS_OSD_H_ 31*1eaf0ac3Slogwang 32*1eaf0ac3Slogwang #include <sys/queue.h> 33*1eaf0ac3Slogwang 34*1eaf0ac3Slogwang /* 35*1eaf0ac3Slogwang * Lock key: 36*1eaf0ac3Slogwang * (c) container lock (e.g. jail's pr_mtx) and/or osd_object_lock 37*1eaf0ac3Slogwang * (l) osd_list_lock 38*1eaf0ac3Slogwang */ 39*1eaf0ac3Slogwang struct osd { 40*1eaf0ac3Slogwang u_int osd_nslots; /* (c) */ 41*1eaf0ac3Slogwang void **osd_slots; /* (c) */ 42*1eaf0ac3Slogwang LIST_ENTRY(osd) osd_next; /* (l) */ 43*1eaf0ac3Slogwang }; 44*1eaf0ac3Slogwang 45*1eaf0ac3Slogwang #ifdef _KERNEL 46*1eaf0ac3Slogwang 47*1eaf0ac3Slogwang #define OSD_THREAD 0 48*1eaf0ac3Slogwang #define OSD_JAIL 1 49*1eaf0ac3Slogwang #define OSD_KHELP 2 50*1eaf0ac3Slogwang 51*1eaf0ac3Slogwang #define OSD_FIRST OSD_THREAD 52*1eaf0ac3Slogwang #define OSD_LAST OSD_KHELP 53*1eaf0ac3Slogwang 54*1eaf0ac3Slogwang typedef void (*osd_destructor_t)(void *value); 55*1eaf0ac3Slogwang typedef int (*osd_method_t)(void *obj, void *data); 56*1eaf0ac3Slogwang 57*1eaf0ac3Slogwang int osd_register(u_int type, osd_destructor_t destructor, 58*1eaf0ac3Slogwang osd_method_t *methods); 59*1eaf0ac3Slogwang void osd_deregister(u_int type, u_int slot); 60*1eaf0ac3Slogwang 61*1eaf0ac3Slogwang int osd_set(u_int type, struct osd *osd, u_int slot, void *value); 62*1eaf0ac3Slogwang void **osd_reserve(u_int slot); 63*1eaf0ac3Slogwang int osd_set_reserved(u_int type, struct osd *osd, u_int slot, void **rsv, 64*1eaf0ac3Slogwang void *value); 65*1eaf0ac3Slogwang void osd_free_reserved(void **rsv); 66*1eaf0ac3Slogwang void *osd_get(u_int type, struct osd *osd, u_int slot); 67*1eaf0ac3Slogwang void osd_del(u_int type, struct osd *osd, u_int slot); 68*1eaf0ac3Slogwang int osd_call(u_int type, u_int method, void *obj, void *data); 69*1eaf0ac3Slogwang 70*1eaf0ac3Slogwang void osd_exit(u_int type, struct osd *osd); 71*1eaf0ac3Slogwang 72*1eaf0ac3Slogwang #define osd_thread_register(destructor) \ 73*1eaf0ac3Slogwang osd_register(OSD_THREAD, (destructor), NULL) 74*1eaf0ac3Slogwang #define osd_thread_deregister(slot) \ 75*1eaf0ac3Slogwang osd_deregister(OSD_THREAD, (slot)) 76*1eaf0ac3Slogwang #define osd_thread_set(td, slot, value) \ 77*1eaf0ac3Slogwang osd_set(OSD_THREAD, &(td)->td_osd, (slot), (value)) 78*1eaf0ac3Slogwang #define osd_thread_set_reserved(td, slot, rsv, value) \ 79*1eaf0ac3Slogwang osd_set_reserved(OSD_THREAD, &(td)->td_osd, (slot), (rsv), (value)) 80*1eaf0ac3Slogwang #define osd_thread_get(td, slot) \ 81*1eaf0ac3Slogwang osd_get(OSD_THREAD, &(td)->td_osd, (slot)) 82*1eaf0ac3Slogwang #define osd_thread_del(td, slot) do { \ 83*1eaf0ac3Slogwang KASSERT((td) == curthread, ("Not curthread.")); \ 84*1eaf0ac3Slogwang osd_del(OSD_THREAD, &(td)->td_osd, (slot)); \ 85*1eaf0ac3Slogwang } while (0) 86*1eaf0ac3Slogwang #define osd_thread_call(td, method, data) \ 87*1eaf0ac3Slogwang osd_call(OSD_THREAD, (method), (td), (data)) 88*1eaf0ac3Slogwang #define osd_thread_exit(td) \ 89*1eaf0ac3Slogwang osd_exit(OSD_THREAD, &(td)->td_osd) 90*1eaf0ac3Slogwang 91*1eaf0ac3Slogwang #define osd_jail_register(destructor, methods) \ 92*1eaf0ac3Slogwang osd_register(OSD_JAIL, (destructor), (methods)) 93*1eaf0ac3Slogwang #define osd_jail_deregister(slot) \ 94*1eaf0ac3Slogwang osd_deregister(OSD_JAIL, (slot)) 95*1eaf0ac3Slogwang #define osd_jail_set(pr, slot, value) \ 96*1eaf0ac3Slogwang osd_set(OSD_JAIL, &(pr)->pr_osd, (slot), (value)) 97*1eaf0ac3Slogwang #define osd_jail_set_reserved(pr, slot, rsv, value) \ 98*1eaf0ac3Slogwang osd_set_reserved(OSD_JAIL, &(pr)->pr_osd, (slot), (rsv), (value)) 99*1eaf0ac3Slogwang #define osd_jail_get(pr, slot) \ 100*1eaf0ac3Slogwang osd_get(OSD_JAIL, &(pr)->pr_osd, (slot)) 101*1eaf0ac3Slogwang #define osd_jail_del(pr, slot) \ 102*1eaf0ac3Slogwang osd_del(OSD_JAIL, &(pr)->pr_osd, (slot)) 103*1eaf0ac3Slogwang #define osd_jail_call(pr, method, data) \ 104*1eaf0ac3Slogwang osd_call(OSD_JAIL, (method), (pr), (data)) 105*1eaf0ac3Slogwang #define osd_jail_exit(pr) \ 106*1eaf0ac3Slogwang osd_exit(OSD_JAIL, &(pr)->pr_osd) 107*1eaf0ac3Slogwang 108*1eaf0ac3Slogwang #endif /* _KERNEL */ 109*1eaf0ac3Slogwang 110*1eaf0ac3Slogwang #endif /* !_SYS_OSD_H_ */ 111