1#ifndef _STDIO_IMPL_H
2#define _STDIO_IMPL_H
3
4#include <stdio.h>
5#include "syscall.h"
6#include "libc.h"
7
8#define UNGET 8
9
10#define FFINALLOCK(f) ((f)->lock>=0 ? __lockfile((f)) : 0)
11#define FLOCK(f) int __need_unlock = ((f)->lock>=0 ? __lockfile((f)) : 0)
12#define FUNLOCK(f) if (__need_unlock) __unlockfile((f)); else
13
14#define F_PERM 1
15#define F_NORD 4
16#define F_NOWR 8
17#define F_EOF 16
18#define F_ERR 32
19#define F_SVB 64
20#define F_APP 128
21
22struct _IO_FILE {
23	unsigned flags;
24	unsigned char *rpos, *rend;
25	int (*close)(FILE *);
26	unsigned char *wend, *wpos;
27	unsigned char *mustbezero_1;
28	unsigned char *wbase;
29	size_t (*read)(FILE *, unsigned char *, size_t);
30	size_t (*write)(FILE *, const unsigned char *, size_t);
31	off_t (*seek)(FILE *, off_t, int);
32	unsigned char *buf;
33	size_t buf_size;
34	FILE *prev, *next;
35	int fd;
36	int pipe_pid;
37	long lockcount;
38	short dummy3;
39	signed char mode;
40	signed char lbf;
41	volatile int lock;
42	volatile int waiters;
43	void *cookie;
44	off_t off;
45	char *getln_buf;
46	void *mustbezero_2;
47	unsigned char *shend;
48	off_t shlim, shcnt;
49	FILE *prev_locked, *next_locked;
50	struct __locale_struct *locale;
51};
52
53size_t __stdio_read(FILE *, unsigned char *, size_t);
54size_t __stdio_write(FILE *, const unsigned char *, size_t);
55size_t __stdout_write(FILE *, const unsigned char *, size_t);
56off_t __stdio_seek(FILE *, off_t, int);
57int __stdio_close(FILE *);
58
59size_t __string_read(FILE *, unsigned char *, size_t);
60
61int __toread(FILE *);
62int __towrite(FILE *);
63
64#if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
65__attribute__((visibility("protected")))
66#endif
67int __overflow(FILE *, int), __uflow(FILE *);
68
69int __fseeko(FILE *, off_t, int);
70int __fseeko_unlocked(FILE *, off_t, int);
71off_t __ftello(FILE *);
72off_t __ftello_unlocked(FILE *);
73size_t __fwritex(const unsigned char *, size_t, FILE *);
74int __putc_unlocked(int, FILE *);
75
76FILE *__fdopen(int, const char *);
77int __fmodeflags(const char *);
78
79FILE *__ofl_add(FILE *f);
80FILE **__ofl_lock(void);
81void __ofl_unlock(void);
82
83#define feof(f) ((f)->flags & F_EOF)
84#define ferror(f) ((f)->flags & F_ERR)
85
86#define getc_unlocked(f) \
87	( ((f)->rpos < (f)->rend) ? *(f)->rpos++ : __uflow((f)) )
88
89#define putc_unlocked(c, f) \
90	( ((unsigned char)(c)!=(f)->lbf && (f)->wpos<(f)->wend) \
91	? *(f)->wpos++ = (c) : __overflow((f),(c)) )
92
93/* Caller-allocated FILE * operations */
94FILE *__fopen_rb_ca(const char *, FILE *, unsigned char *, size_t);
95int __fclose_ca(FILE *);
96
97#endif
98