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Annotation of prex-old/usr/test/zero/zero.c, Revision 1.1

1.1     ! nbrk        1: /*
        !             2:  * Copyright (c) 2005, 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:  * zero.c - test zero device driver.
        !            32:  */
        !            33:
        !            34: #include <prex/prex.h>
        !            35: #include <stdio.h>
        !            36: #include <string.h>
        !            37:
        !            38: static char buf[100];
        !            39:
        !            40: void
        !            41: dump_buf(void)
        !            42: {
        !            43:        int i;
        !            44:
        !            45:        for (i = 0; i < 100; i++)
        !            46:                putchar(buf[i]);
        !            47:        putchar('\n');
        !            48: }
        !            49:
        !            50: int
        !            51: main(int argc, char *argv[])
        !            52: {
        !            53:        device_t zero_dev;
        !            54:        int i, err;
        !            55:        size_t len;
        !            56:
        !            57:        printf("zero test\n");
        !            58:
        !            59:        /* 0000000000111111111122222.... */
        !            60:        for (i = 0; i < 100; i++)
        !            61:                buf[i] = '0' + i / 10;
        !            62:        dump_buf();
        !            63:
        !            64:        err = device_open("zero", 0, &zero_dev);
        !            65:        if (err)
        !            66:                printf("device open error!\n");
        !            67:
        !            68:        /* zero fill 50 character */
        !            69:        len = 50;
        !            70:        err = device_read(zero_dev, buf, &len, 0);
        !            71:        if (err)
        !            72:                printf("device read error!\n");
        !            73:
        !            74:        /* 5555555555666666666777... */
        !            75:        dump_buf();
        !            76:
        !            77:        return 0;
        !            78: }