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: src/share/examples/kld/cdev/test/testcdev.c,v 1.2.2.2 2000/12/11 01:03:26 obrien Exp $ 72 * $DragonFly: src/share/examples/kld/cdev/test/testcdev.c,v 1.2 2003/06/17 04:36:57 dillon Exp $ 73 */ 74 75 #include <stdio.h> 76 #include <stdlib.h> 77 #include <fcntl.h> 78 #include <paths.h> 79 #include <string.h> 80 #include <sys/ioccom.h> 81 82 #define CDEV_IOCTL1 _IOR('C', 1, u_int) 83 #define CDEV_DEVICE "cdev" 84 85 static char writestr[] = "Hello kernel!"; 86 static char buf[512+1]; 87 88 int 89 main(int argc, char *argv[]) 90 { 91 int kernel_fd; 92 int one; 93 int len; 94 95 if ((kernel_fd = open("/dev/" CDEV_DEVICE, O_RDWR)) == -1) { 96 perror("/dev/" CDEV_DEVICE); 97 exit(1); 98 } 99 100 /* Send ioctl */ 101 if (ioctl(kernel_fd, CDEV_IOCTL1, &one) == -1) { 102 perror("CDEV_IOCTL1"); 103 } 104 else { 105 printf("Sent ioctl CDEV_IOCTL1 to device %s%s\n", _PATH_DEV, 106 CDEV_DEVICE); 107 } 108 109 len = strlen(writestr) + 1; 110 111 /* Write operation */ 112 if (write(kernel_fd, writestr, len) == -1) { 113 perror("write()"); 114 } 115 else { 116 printf("Written \"%s\" string to device /dev/" CDEV_DEVICE "\n", 117 writestr); 118 } 119 120 /* Read operation */ 121 if (read(kernel_fd, buf, len) == -1) { 122 perror("read()"); 123 } 124 else { 125 printf("Read \"%s\" string from device /dev/" CDEV_DEVICE "\n", 126 buf); 127 } 128 129 exit(0); 130 } 131