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 * SPDX-License-Identifier: BSD-4-Clause 11 * 12 * Copyright (c) 1993 Rajesh Vaidheeswarran. 13 * All rights reserved. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. All advertising materials mentioning features or use of this software 24 * must display the following acknowledgement: 25 * This product includes software developed by Rajesh Vaidheeswarran. 26 * 4. The name Rajesh Vaidheeswarran may not be used to endorse or promote 27 * products derived from this software without specific prior written 28 * permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY RAJESH VAIDHEESWARRAN ``AS IS'' AND ANY 31 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE RAJESH VAIDHEESWARRAN BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * Copyright (c) 1993 Terrence R. Lambert. 43 * All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Terrence R. Lambert. 56 * 4. The name Terrence R. Lambert may not be used to endorse or promote 57 * products derived from this software without specific prior written 58 * permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY 61 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 */ 73 #include <sys/types.h> 74 #include <sys/ioccom.h> 75 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <fcntl.h> 79 #include <paths.h> 80 #include <string.h> 81 #include <unistd.h> 82 83 #define CDEV_IOCTL1 _IOR('C', 1, u_int) 84 #define CDEV_DEVICE "cdev" 85 86 static char writestr[] = "Hello kernel!"; 87 static char buf[512+1]; 88 89 int 90 main(int argc __unused, char *argv[] __unused) 91 { 92 int kernel_fd; 93 int one; 94 int len; 95 96 if ((kernel_fd = open("/dev/" CDEV_DEVICE, O_RDWR)) == -1) { 97 perror("/dev/" CDEV_DEVICE); 98 exit(1); 99 } 100 101 /* Send ioctl */ 102 if (ioctl(kernel_fd, CDEV_IOCTL1, &one) == -1) { 103 perror("CDEV_IOCTL1"); 104 } else { 105 printf( "Sent ioctl CDEV_IOCTL1 to device %s%s\n", _PATH_DEV, CDEV_DEVICE); 106 } 107 108 len = strlen(writestr) + 1; 109 110 /* Write operation */ 111 if (write(kernel_fd, writestr, len) == -1) { 112 perror("write()"); 113 } else { 114 printf("Written \"%s\" string to device /dev/" CDEV_DEVICE "\n", writestr); 115 } 116 117 /* Read operation */ 118 if (read(kernel_fd, buf, len) == -1) { 119 perror("read()"); 120 } else { 121 printf("Read \"%s\" string from device /dev/" CDEV_DEVICE "\n", buf); 122 } 123 124 exit(0); 125 } 126