source: mainline/uspace/lib/libc/include/stdio.h@ ac47b7c2

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since ac47b7c2 was ef8bcc6, checked in by Jiri Svoboda <jirik.svoboda@…>, 16 years ago

Stdio stream buffering (only for writing a.t.m.) Issue: Do we need two moving delimiters (head, tail) to recover from error or is one moving data delimiter enough, like in the current implementation? (Where the buffer must be drained as a whole, cannot do it part at a time.
  • Property mode set to 100644
File size: 3.9 KB
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1/*
2 * Copyright (c) 2005 Martin Decky
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.
27 */
28
29/** @addtogroup libc
30 * @{
31 */
32/** @file
33 */
34
35#ifndef LIBC_STDIO_H_
36#define LIBC_STDIO_H_
37
38#include <sys/types.h>
39#include <stdarg.h>
40#include <adt/list.h>
41
42#define EOF (-1)
43
44/** Default size for stream I/O buffers */
45#define BUFSIZ 4096
46
47#define DEBUG(fmt, ...) \
48{ \
49 char buf[256]; \
50 int n = snprintf(buf, sizeof(buf), fmt, ##__VA_ARGS__); \
51 if (n > 0) \
52 (void) __SYSCALL3(SYS_KLOG, 1, (sysarg_t) buf, str_size(buf)); \
53}
54
55#ifndef SEEK_SET
56 #define SEEK_SET 0
57 #define SEEK_CUR 1
58 #define SEEK_END 2
59#endif
60
61enum _buffer_type {
62 /** No buffering */
63 _IONBF,
64 /** Line buffering */
65 _IOLBF,
66 /** Full buffering */
67 _IOFBF
68};
69
70typedef struct {
71 /** Linked list pointer. */
72 link_t link;
73
74 /** Underlying file descriptor. */
75 int fd;
76
77 /** Error indicator. */
78 int error;
79
80 /** End-of-file indicator. */
81 int eof;
82
83 /** Klog indicator */
84 int klog;
85
86 /** Phone to the file provider */
87 int phone;
88
89 /** Buffering type */
90 enum _buffer_type btype;
91 /** Buffer */
92 uint8_t *buf;
93 /** Buffer size */
94 size_t buf_size;
95 /** Buffer I/O pointer */
96 uint8_t *buf_head;
97} FILE;
98
99extern FILE *stdin;
100extern FILE *stdout;
101extern FILE *stderr;
102
103/* Character and string input functions */
104extern int fgetc(FILE *);
105extern char *fgets(char *, size_t, FILE *);
106
107extern int getchar(void);
108extern char *gets(char *, size_t);
109
110/* Character and string output functions */
111extern int fputc(wchar_t, FILE *);
112extern int fputs(const char *, FILE *);
113
114extern int putchar(wchar_t);
115extern int puts(const char *);
116
117/* Formatted string output functions */
118extern int fprintf(FILE *, const char*, ...);
119extern int vfprintf(FILE *, const char *, va_list);
120
121extern int printf(const char *, ...);
122extern int vprintf(const char *, va_list);
123
124extern int snprintf(char *, size_t , const char *, ...);
125extern int asprintf(char **, const char *, ...);
126extern int vsnprintf(char *, size_t, const char *, va_list);
127
128/* File stream functions */
129extern FILE *fopen(const char *, const char *);
130extern FILE *fdopen(int, const char *);
131extern int fclose(FILE *);
132
133extern size_t fread(void *, size_t, size_t, FILE *);
134extern size_t fwrite(const void *, size_t, size_t, FILE *);
135
136extern int fseek(FILE *, long, int);
137extern void rewind(FILE *);
138extern int ftell(FILE *);
139extern int feof(FILE *);
140
141extern int fflush(FILE *);
142extern int ferror(FILE *);
143extern void clearerr(FILE *);
144
145extern void setvbuf(FILE *, void *, int, size_t);
146
147/* Misc file functions */
148extern int rename(const char *, const char *);
149
150#endif
151
152/** @}
153 */
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