Annotation of prex-old/usr/lib/libsa/_stdio.c, Revision 1.1
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:
! 34: static device_t __console_dev;
! 35:
! 36: static int init_done = 0;
! 37:
! 38: void
! 39: __stdio_exit(void)
! 40: {
! 41:
! 42: if (__console_dev)
! 43: device_close(__console_dev);
! 44: init_done = 0;
! 45: }
! 46:
! 47: static void
! 48: __stdio_init(void)
! 49: {
! 50:
! 51: device_open("console", 0, &__console_dev);
! 52: __cleanup = __stdio_exit;
! 53: init_done = 1;
! 54: }
! 55:
! 56: void
! 57: __console_write(char *buf, size_t len)
! 58: {
! 59:
! 60: if (init_done == 0)
! 61: __stdio_init();
! 62:
! 63: device_write(__console_dev, buf, &len, 0);
! 64: }
! 65:
! 66: char
! 67: __console_read(void)
! 68: {
! 69: char ch;
! 70: size_t len = 1;
! 71:
! 72: if (init_done == 0)
! 73: __stdio_init();
! 74:
! 75: device_read(__console_dev, &ch, &len, 0);
! 76: return (int)ch;
! 77: }
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