1#ifndef _STDIO_IMPL_H
  2#define _STDIO_IMPL_H
  3
  4#include <stdio.h>
  5#include "syscall.h"
  6
  7#define UNGET 8
  8
  9#define FFINALLOCK(f) ((f)->lock>=0 ? __lockfile((f)) : 0)
 10#define FLOCK(f) int __need_unlock = ((f)->lock>=0 ? __lockfile((f)) : 0)
 11#define FUNLOCK(f) do { if (__need_unlock) __unlockfile((f)); } while (0)
 12
 13#define F_PERM 1
 14#define F_NORD 4
 15#define F_NOWR 8
 16#define F_EOF 16
 17#define F_ERR 32
 18#define F_SVB 64
 19#define F_APP 128
 20
 21struct _IO_FILE {
 22	unsigned flags;
 23	unsigned char *rpos, *rend;
 24	int (*close)(FILE *);
 25	unsigned char *wend, *wpos;
 26	unsigned char *mustbezero_1;
 27	unsigned char *wbase;
 28	size_t (*read)(FILE *, unsigned char *, size_t);
 29	size_t (*write)(FILE *, const unsigned char *, size_t);
 30	off_t (*seek)(FILE *, off_t, int);
 31	unsigned char *buf;
 32	size_t buf_size;
 33	FILE *prev, *next;
 34	int fd;
 35	int pipe_pid;
 36	long lockcount;
 37	int mode;
 38	volatile int lock;
 39	int lbf;
 40	void *cookie;
 41	off_t off;
 42	char *getln_buf;
 43	void *mustbezero_2;
 44	unsigned char *shend;
 45	off_t shlim, shcnt;
 46	FILE *prev_locked, *next_locked;
 47	struct __locale_struct *locale;
 48};
 49
 50extern hidden FILE *volatile __stdin_used;
 51extern hidden FILE *volatile __stdout_used;
 52extern hidden FILE *volatile __stderr_used;
 53
 54hidden int __lockfile(FILE *);
 55hidden void __unlockfile(FILE *);
 56
 57hidden size_t __stdio_read(FILE *, unsigned char *, size_t);
 58hidden size_t __stdio_write(FILE *, const unsigned char *, size_t);
 59hidden size_t __stdout_write(FILE *, const unsigned char *, size_t);
 60hidden off_t __stdio_seek(FILE *, off_t, int);
 61hidden int __stdio_close(FILE *);
 62
 63hidden int __toread(FILE *);
 64hidden int __towrite(FILE *);
 65
 66hidden void __stdio_exit(void);
 67hidden void __stdio_exit_needed(void);
 68
 69#if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
 70__attribute__((visibility("protected")))
 71#endif
 72int __overflow(FILE *, int), __uflow(FILE *);
 73
 74hidden int __fseeko(FILE *, off_t, int);
 75hidden int __fseeko_unlocked(FILE *, off_t, int);
 76hidden off_t __ftello(FILE *);
 77hidden off_t __ftello_unlocked(FILE *);
 78hidden size_t __fwritex(const unsigned char *, size_t, FILE *);
 79hidden int __putc_unlocked(int, FILE *);
 80
 81hidden FILE *__fdopen(int, const char *);
 82hidden int __fmodeflags(const char *);
 83
 84hidden FILE *__ofl_add(FILE *f);
 85hidden FILE **__ofl_lock(void);
 86hidden void __ofl_unlock(void);
 87
 88struct __pthread;
 89hidden void __register_locked_file(FILE *, struct __pthread *);
 90hidden void __unlist_locked_file(FILE *);
 91hidden void __do_orphaned_stdio_locks(void);
 92
 93#define MAYBE_WAITERS 0x40000000
 94
 95hidden void __getopt_msg(const char *, const char *, const char *, size_t);
 96
 97#define feof(f) ((f)->flags & F_EOF)
 98#define ferror(f) ((f)->flags & F_ERR)
 99
100#define getc_unlocked(f) \
101	( ((f)->rpos != (f)->rend) ? *(f)->rpos++ : __uflow((f)) )
102
103#define putc_unlocked(c, f) \
104	( (((unsigned char)(c)!=(f)->lbf && (f)->wpos!=(f)->wend)) \
105	? *(f)->wpos++ = (unsigned char)(c) \
106	: __overflow((f),(unsigned char)(c)) )
107
108/* Caller-allocated FILE * operations */
109hidden FILE *__fopen_rb_ca(const char *, FILE *, unsigned char *, size_t);
110hidden int __fclose_ca(FILE *);
111
112#endif