blkdev.h (2459B)
1 /* $Id: //depot/blt/include/blt/blkdev.h#2 $ 2 ** 3 ** Copyright 1999 Sidney Cammeresi 4 ** All rights reserved. 5 ** 6 ** Redistribution and use in source and binary forms, with or without 7 ** modification, are permitted provided that the following conditions 8 ** are met: 9 ** 1. Redistributions of source code must retain the above copyright 10 ** notice, this list of conditions, and the following disclaimer. 11 ** 2. Redistributions in binary form must reproduce the above copyright 12 ** notice, this list of conditions, and the following disclaimer in the 13 ** documentation and/or other materials provided with the distribution. 14 ** 3. The name of the author may not be used to endorse or promote products 15 ** derived from this software without specific prior written permission. 16 ** 17 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _BLT_BLKDEV_H_ 30 #define _BLT_BLKDEV_H_ 31 32 #include <blt/types.h> 33 34 #define BLK_CMD_OPEN 1 35 #define BLK_CMD_READ 2 36 #define BLK_CMD_WRITE 3 37 38 typedef struct 39 { 40 int blksize; 41 int local_port, remote_port; 42 dev_t devno; 43 } blkdev_t; 44 45 typedef struct 46 { 47 dev_t device; 48 unsigned int cmd, block, count; 49 } blktxn_t; 50 51 typedef struct 52 { 53 dev_t device; 54 int status; 55 int data[2]; 56 } blkres_t; 57 58 #ifdef __cplusplus 59 extern "C" { 60 #endif 61 62 int _blk_open (const char *name, int flags, blkdev_t **dev); 63 int blk_open (const char *name, int flags, blkdev_t **dev); 64 int _blk_close (blkdev_t *dev); 65 int blk_close (blkdev_t *dev); 66 67 int _blk_read (blkdev_t *dev, void *buf, int block, int count); 68 int blk_read (blkdev_t *dev, void *buf, int block, int count); 69 int _blk_write (blkdev_t *dev, const void *buf, int block, int count); 70 int blk_write (blkdev_t *dev, const void *buf, int block, int count); 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 77 #endif 78