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 21 struct _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 50 extern hidden FILE *volatile __stdin_used; 51 extern hidden FILE *volatile __stdout_used; 52 extern hidden FILE *volatile __stderr_used; 53 54 hidden int __lockfile(FILE *); 55 hidden void __unlockfile(FILE *); 56 57 hidden size_t __stdio_read(FILE *, unsigned char *, size_t); 58 hidden size_t __stdio_write(FILE *, const unsigned char *, size_t); 59 hidden size_t __stdout_write(FILE *, const unsigned char *, size_t); 60 hidden off_t __stdio_seek(FILE *, off_t, int); 61 hidden int __stdio_close(FILE *); 62 63 hidden size_t __string_read(FILE *, unsigned char *, size_t); 64 65 hidden int __toread(FILE *); 66 hidden int __towrite(FILE *); 67 68 hidden void __stdio_exit(void); 69 hidden void __stdio_exit_needed(void); 70 71 #if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303) 72 __attribute__((visibility("protected"))) 73 #endif 74 int __overflow(FILE *, int), __uflow(FILE *); 75 76 hidden int __fseeko(FILE *, off_t, int); 77 hidden int __fseeko_unlocked(FILE *, off_t, int); 78 hidden off_t __ftello(FILE *); 79 hidden off_t __ftello_unlocked(FILE *); 80 hidden size_t __fwritex(const unsigned char *, size_t, FILE *); 81 hidden int __putc_unlocked(int, FILE *); 82 83 hidden FILE *__fdopen(int, const char *); 84 hidden int __fmodeflags(const char *); 85 86 hidden FILE *__ofl_add(FILE *f); 87 hidden FILE **__ofl_lock(void); 88 hidden void __ofl_unlock(void); 89 90 struct __pthread; 91 hidden void __register_locked_file(FILE *, struct __pthread *); 92 hidden void __unlist_locked_file(FILE *); 93 hidden void __do_orphaned_stdio_locks(void); 94 95 #define MAYBE_WAITERS 0x40000000 96 97 hidden void __getopt_msg(const char *, const char *, const char *, size_t); 98 99 #define feof(f) ((f)->flags & F_EOF) 100 #define ferror(f) ((f)->flags & F_ERR) 101 102 #define getc_unlocked(f) \ 103 ( ((f)->rpos != (f)->rend) ? *(f)->rpos++ : __uflow((f)) ) 104 105 #define putc_unlocked(c, f) \ 106 ( (((unsigned char)(c)!=(f)->lbf && (f)->wpos!=(f)->wend)) \ 107 ? *(f)->wpos++ = (unsigned char)(c) \ 108 : __overflow((f),(unsigned char)(c)) ) 109 110 /* Caller-allocated FILE * operations */ 111 hidden FILE *__fopen_rb_ca(const char *, FILE *, unsigned char *, size_t); 112 hidden int __fclose_ca(FILE *); 113 114 #endif 115