10 #define FSETLOCKING_QUERY 0
11 #define FSETLOCKING_INTERNAL 1
12 #define FSETLOCKING_BYCALLER 2
15 int __fsetlocking(FILE *, int);
16 int __fwriting(FILE *);
17 int __freading(FILE *);
18 int __freadable(FILE *);
19 int __fwritable(FILE *);
21 size_t __fbufsize(FILE *);
22 size_t __fpending(FILE *);
25 size_t __freadahead(FILE *);
26 const char *__freadptr(FILE *, size_t *);
27 void __freadptrinc(FILE *, size_t);
28 void __fseterr(FILE *);