1 /****************************************************************************** 2 * 3 * Copyright (c) 2009 Citrix Systems, Inc. (Grzegorz Milos) 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; If not, see <http://www.gnu.org/licenses/>. 17 */ 18 #ifndef __SHM_H__ 19 #define __SHM_H__ 20 21 #include <pthread.h> 22 #include <unistd.h> 23 24 #define MAX_NAME_LEN 1000 25 26 typedef struct vbd_image_info { 27 char file[MAX_NAME_LEN]; 28 int ref_cnt; 29 uint16_t next; 30 uint16_t prev; 31 } vbd_image_info_t; 32 33 #define MAX_NR_VBD_IMAGES 4096 34 35 typedef struct shared_memshr_info { 36 unsigned long magic; 37 pthread_mutex_t lock; 38 int fgprtshr_hash_inited; 39 int blockshr_hash_inited; 40 vbd_image_info_t vbd_images[MAX_NR_VBD_IMAGES]; 41 } shared_memshr_info_t; 42 43 shared_memshr_info_t * shm_shared_info_open(int unlink); 44 struct fgprtshr_hash * shm_fgprtshr_hash_open(int unlink); 45 struct blockshr_hash * shm_blockshr_hash_open(int unlink); 46 uint16_t shm_vbd_image_get(const char* file, vbd_image_info_t *vbd_imgs); 47 void shm_vbd_image_put(uint16_t memshr_id, vbd_image_info_t *vbd_imgs); 48 49 #endif /* __SHM_H__ */ 50