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Annotation of prex-old/usr/lib/libsa/_stdio.c, Revision 1.1.1.1.2.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 2005-2006, 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: #include <prex/prex.h>
                     31:
                     32: extern void    (*__cleanup)(void);     /* in exit() */
                     33:
1.1.1.1.2.1! nbrk       34: void __console_write(char *, size_t);
        !            35: char __console_read(void);
        !            36:
        !            37:
1.1       nbrk       38: static device_t __console_dev;
                     39:
                     40: static int init_done = 0;
                     41:
1.1.1.1.2.1! nbrk       42: static void
1.1       nbrk       43: __stdio_exit(void)
                     44: {
                     45:
                     46:        if (__console_dev)
                     47:                device_close(__console_dev);
                     48:        init_done = 0;
                     49: }
                     50:
                     51: static void
                     52: __stdio_init(void)
                     53: {
                     54:
                     55:        device_open("console", 0, &__console_dev);
                     56:        __cleanup = __stdio_exit;
                     57:        init_done = 1;
                     58: }
                     59:
                     60: void
                     61: __console_write(char *buf, size_t len)
                     62: {
                     63:
                     64:        if (init_done == 0)
                     65:                __stdio_init();
                     66:
                     67:        device_write(__console_dev, buf, &len, 0);
                     68: }
                     69:
                     70: char
                     71: __console_read(void)
                     72: {
                     73:        char ch;
                     74:        size_t len = 1;
                     75:
                     76:        if (init_done == 0)
                     77:                __stdio_init();
                     78:
                     79:        device_read(__console_dev, &ch, &len, 0);
                     80:        return (int)ch;
                     81: }