source: mainline/uspace/libc/generic/io/io.c@ 3dbe2d1f

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 3dbe2d1f was 3dbe2d1f, checked in by Martin Decky <martin@…>, 18 years ago

use futex instead of pthread serialization
synchronize only output to stdout
cleanup

  • Property mode set to 100644
File size: 2.6 KB
RevLine 
[b861b58]1/*
[df4ed85]2 * Copyright (c) 2005 Martin Decky
[b861b58]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 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
[b2951e2]27 */
28
[fadd381]29/** @addtogroup libc
[b2951e2]30 * @{
31 */
32/** @file
[cc6f688]33 */
[b861b58]34
35#include <libc.h>
[cc6f688]36#include <unistd.h>
37#include <stdio.h>
[4e2cf8b]38#include <io/io.h>
[b861b58]39
[3dbe2d1f]40const static char nl = '\n';
[350514c]41
[3dbe2d1f]42int puts(const char *str)
[b861b58]43{
[cc6f688]44 size_t count;
45
[3dbe2d1f]46 if (str == NULL)
47 return putnchars("(NULL)", 6);
[c9857c6]48
[cc6f688]49 for (count = 0; str[count] != 0; count++);
[3dbe2d1f]50 if (write(1, (void *) str, count) == count) {
[350514c]51 if (write(1, &nl, 1) == 1)
52 return 0;
53 }
54
55 return EOF;
[cc6f688]56}
[b861b58]57
[4e2cf8b]58/** Put count chars from buffer to stdout without adding newline
[c9857c6]59 * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed!
[4e2cf8b]60 * @param count
61 * @return 0 on succes, EOF on fail
62 */
[3dbe2d1f]63int putnchars(const char *buf, size_t count)
[4e2cf8b]64{
[3dbe2d1f]65 if (write(1, (void *) buf, count) == count)
[4e2cf8b]66 return 0;
67
68 return EOF;
69}
70
71/** Same as puts, but does not print newline at end
72 *
73 */
[3dbe2d1f]74int putstr(const char *str)
[4e2cf8b]75{
76 size_t count;
77
[3dbe2d1f]78 if (str == NULL)
79 return putnchars("(NULL)", 6);
[55cff86]80
[4e2cf8b]81 for (count = 0; str[count] != 0; count++);
[3dbe2d1f]82 if (write(1, (void *) str, count) == count)
[4e2cf8b]83 return 0;
84
85 return EOF;
86}
87
[c9857c6]88int putchar(int c)
89{
90 unsigned char ch = c;
[3dbe2d1f]91 if (write(1, (void *) &ch, 1) == 1)
[c9857c6]92 return c;
93
94 return EOF;
95}
[b27a97bb]96
97int getchar(void)
98{
99 unsigned char c;
[3dbe2d1f]100 if (read(0, (void *) &c, 1) == 1)
[b27a97bb]101 return c;
102
103 return EOF;
104}
105
[fadd381]106/** @}
[b2951e2]107 */
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