1 /* 08 Nov 1998*/ 2 /* 3 * testmisc.c 4 * 5 * Test program to call the sample loaded kld device driver. 6 * 7 * 05 Jun 93 Rajesh Vaidheeswarran Original 8 * 9 * 10 * Copyright (c) 1993 Rajesh Vaidheeswarran. 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by Rajesh Vaidheeswarran. 24 * 4. The name Rajesh Vaidheeswarran may not be used to endorse or promote 25 * products derived from this software without specific prior written 26 * permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY RAJESH VAIDHEESWARRAN ``AS IS'' AND ANY 29 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE RAJESH VAIDHEESWARRAN BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * Copyright (c) 1993 Terrence R. Lambert. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by Terrence R. Lambert. 54 * 4. The name Terrence R. Lambert may not be used to endorse or promote 55 * products derived from this software without specific prior written 56 * permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY 59 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * 71 * $FreeBSD$ 72 */ 73 #include <stdio.h> 74 #include <fcntl.h> 75 #include <string.h> 76 #include <sys/ioccom.h> 77 78 #define CDEV_IOCTL1 _IOR('C', 1, u_int) 79 #define CDEV_DEVICE "cdev" 80 81 static char writestr[] = "Hello kernel!"; 82 static char buf[512+1]; 83 84 int 85 main(int argc, char *argv[]) 86 { 87 int kernel_fd; 88 int one; 89 int len; 90 91 if ((kernel_fd = open("/dev/" CDEV_DEVICE, O_RDWR)) == -1) { 92 perror("/dev/" CDEV_DEVICE); 93 exit(1); 94 } 95 96 /* Send ioctl */ 97 if (ioctl(kernel_fd, CDEV_IOCTL1, &one) == -1) { 98 perror("CDEV_IOCTL1"); 99 } else { 100 printf( "Sent ioctl CDEV_IOCTL1 to device /dev/" CDEV_DEVICE "\n"); 101 } 102 103 len = strlen(writestr) + 1; 104 105 /* Write operation */ 106 if (write(kernel_fd, writestr, len) == -1) { 107 perror("write()"); 108 } else { 109 printf("Written \"%s\" string to device /dev/" CDEV_DEVICE "\n", writestr); 110 } 111 112 /* Read operation */ 113 if (read(kernel_fd, buf, len) == -1) { 114 perror("read()"); 115 } else { 116 printf("Read \"%s\" string from device /dev/" CDEV_DEVICE "\n", buf); 117 } 118 119 exit(0); 120 } 121