1 /* 2 * Copyright (c) 2008, XenSource Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * * Neither the name of XenSource Inc. nor the names of its contributors 13 * may be used to endorse or promote products derived from this software 14 * without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 20 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef _TAPDISK_SERVER_H_ 29 #define _TAPDISK_SERVER_H_ 30 31 #include "list.h" 32 #include "tapdisk-vbd.h" 33 #include "tapdisk-queue.h" 34 35 struct tap_disk *tapdisk_server_find_driver_interface(int); 36 37 td_image_t *tapdisk_server_get_shared_image(td_image_t *); 38 39 struct list_head *tapdisk_server_get_all_vbds(void); 40 td_vbd_t *tapdisk_server_get_vbd(td_uuid_t); 41 void tapdisk_server_add_vbd(td_vbd_t *); 42 void tapdisk_server_remove_vbd(td_vbd_t *); 43 44 void tapdisk_server_queue_tiocb(struct tiocb *); 45 46 void tapdisk_server_check_state(void); 47 48 event_id_t tapdisk_server_register_event(char, int, int, event_cb_t, void *); 49 void tapdisk_server_unregister_event(event_id_t); 50 void tapdisk_server_set_max_timeout(int); 51 52 int tapdisk_server_init(void); 53 int tapdisk_server_initialize(void); 54 int tapdisk_server_complete(void); 55 int tapdisk_server_run(void); 56 void tapdisk_server_iterate(void); 57 58 #define TAPDISK_TIOCBS (TAPDISK_DATA_REQUESTS + 50) 59 60 typedef struct tapdisk_server { 61 int run; 62 struct list_head vbds; 63 scheduler_t scheduler; 64 struct tqueue aio_queue; 65 } tapdisk_server_t; 66 67 #endif 68