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Diffstat (limited to 'share/examples/kld/cdev/test/testcdev.c')
| -rw-r--r-- | share/examples/kld/cdev/test/testcdev.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/share/examples/kld/cdev/test/testcdev.c b/share/examples/kld/cdev/test/testcdev.c new file mode 100644 index 000000000000..50b5ef89fd36 --- /dev/null +++ b/share/examples/kld/cdev/test/testcdev.c @@ -0,0 +1,125 @@ +/* 08 Nov 1998*/ +/* + * testmisc.c + * + * Test program to call the sample loaded kld device driver. + * + * 05 Jun 93 Rajesh Vaidheeswarran Original + * + * + * Copyright (c) 1993 Rajesh Vaidheeswarran. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Rajesh Vaidheeswarran. + * 4. The name Rajesh Vaidheeswarran may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY RAJESH VAIDHEESWARRAN ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE RAJESH VAIDHEESWARRAN BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * Copyright (c) 1993 Terrence R. Lambert. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Terrence R. Lambert. + * 4. The name Terrence R. Lambert may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE TERRENCE R. LAMBERT BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * + * $FreeBSD$ + */ +#include <sys/types.h> +#include <sys/ioccom.h> + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <paths.h> +#include <string.h> +#include <unistd.h> + +#define CDEV_IOCTL1 _IOR('C', 1, u_int) +#define CDEV_DEVICE "cdev" + +static char writestr[] = "Hello kernel!"; +static char buf[512+1]; + +int +main(int argc __unused, char *argv[] __unused) +{ + int kernel_fd; + int one; + int len; + + if ((kernel_fd = open("/dev/" CDEV_DEVICE, O_RDWR)) == -1) { + perror("/dev/" CDEV_DEVICE); + exit(1); + } + + /* Send ioctl */ + if (ioctl(kernel_fd, CDEV_IOCTL1, &one) == -1) { + perror("CDEV_IOCTL1"); + } else { + printf( "Sent ioctl CDEV_IOCTL1 to device %s%s\n", _PATH_DEV, CDEV_DEVICE); + } + + len = strlen(writestr) + 1; + + /* Write operation */ + if (write(kernel_fd, writestr, len) == -1) { + perror("write()"); + } else { + printf("Written \"%s\" string to device /dev/" CDEV_DEVICE "\n", writestr); + } + + /* Read operation */ + if (read(kernel_fd, buf, len) == -1) { + perror("read()"); + } else { + printf("Read \"%s\" string from device /dev/" CDEV_DEVICE "\n", buf); + } + + exit(0); +} |