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root/bsp/drv/dev/misc/random.c/* [<][>][^][v][top][bottom][index][help] */DEFINITIONSThis source file includes following definitions.1 /*- 2 * Copyright (c) 2009, Kohsuke Ohtani 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 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * null.c - /dev/random device 32 */ 33 34 #include <driver.h> 35 36 static int random_read(device_t, char *, size_t *, int); 37 static int random_init(struct driver *); 38 39 static struct devops random_devops = { 40 /* open */ no_open, 41 /* close */ no_close, 42 /* read */ random_read, 43 /* write */ no_write, 44 /* ioctl */ no_ioctl, 45 /* devctl */ no_devctl, 46 }; 47 48 struct driver random_driver = { 49 /* name */ "null", 50 /* devops */ &random_devops, 51 /* devsz */ 0, 52 /* flags */ 0, 53 /* probe */ NULL, 54 /* init */ random_init, 55 /* shutdown */ NULL, 56 }; 57 58 static int 59 random_read(device_t dev, char *buf, size_t *nbyte, int blkno) 60 { 61 62 /* TODO */ 63 64 *nbyte = 0; 65 return 0; 66 } 67 68 static int 69 random_init(struct driver *self) 70 { 71 72 device_create(self, "random", D_CHR); 73 return 0; 74 } /* [<][>][^][v][top][bottom][index][help] */ | |||
Copyright© 2005-2009 Kohsuke Ohtani |