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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6536 | serge | 1 | /* |
| 2 | FUNCTION |
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| 3 | < |
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| 4 | |||
| 5 | INDEX |
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| 6 | __fbufsize |
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| 7 | INDEX |
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| 8 | __fpending |
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| 9 | INDEX |
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| 10 | __flbf |
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| 11 | INDEX |
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| 12 | __freadable |
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| 13 | INDEX |
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| 14 | __fwritable |
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| 15 | INDEX |
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| 16 | __freading |
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| 17 | INDEX |
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| 18 | __fwriting |
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| 19 | |||
| 20 | ANSI_SYNOPSIS |
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| 21 | #include |
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| 22 | #include |
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| 23 | size_t __fbufsize(FILE *<[fp]>); |
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| 24 | size_t __fpending(FILE *<[fp]>); |
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| 25 | int __flbf(FILE *<[fp]>); |
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| 26 | int __freadable(FILE *<[fp]>); |
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| 27 | int __fwritable(FILE *<[fp]>); |
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| 28 | int __freading(FILE *<[fp]>); |
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| 29 | int __fwriting(FILE *<[fp]>); |
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| 30 | |||
| 31 | DESCRIPTION |
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| 32 | These functions provides access to the internals of the FILE structure <[fp]>. |
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| 33 | |||
| 34 | RETURNS |
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| 35 | <<__fbufsize>> returns the number of bytes in the buffer of stream <[fp]>. |
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| 36 | |||
| 37 | <<__fpending>> returns the number of bytes in the output buffer of stream <[fp]>. |
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| 38 | |||
| 39 | <<__flbf>> returns nonzero if stream <[fp]> is line-buffered, and <<0>> if not. |
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| 40 | |||
| 41 | <<__freadable>> returns nonzero if stream <[fp]> may be read, and <<0>> if not. |
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| 42 | |||
| 43 | <<__fwritable>> returns nonzero if stream <[fp]> may be written, and <<0>> if not. |
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| 44 | |||
| 45 | <<__freading>> returns nonzero if stream <[fp]> if the last operation on |
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| 46 | it was a read, or if it read-only, and <<0>> if not. |
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| 47 | |||
| 48 | <<__fwriting>> returns nonzero if stream <[fp]> if the last operation on |
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| 49 | it was a write, or if it write-only, and <<0>> if not. |
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| 50 | |||
| 51 | PORTABILITY |
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| 52 | These functions originate from Solaris and are also provided by GNU libc. |
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| 53 | |||
| 54 | No supporting OS subroutines are required. |
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| 55 | */ |
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| 56 | |||
| 57 | #ifndef __rtems__ |
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| 58 | |||
| 59 | #include <_ansi.h> |
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| 60 | #include |
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| 61 | |||
| 62 | /* Subroutine versions of the inline or macro functions. */ |
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| 63 | |||
| 64 | size_t |
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| 65 | _DEFUN(__fbufsize, (fp), |
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| 66 | FILE * fp) |
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| 67 | { |
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| 68 | return (size_t) fp->_bf._size; |
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| 69 | } |
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| 70 | |||
| 71 | size_t |
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| 72 | _DEFUN(__fpending, (fp), |
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| 73 | FILE * fp) |
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| 74 | { |
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| 75 | return fp->_p - fp->_bf._base; |
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| 76 | } |
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| 77 | |||
| 78 | int |
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| 79 | _DEFUN(__flbf, (fp), |
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| 80 | FILE * fp) |
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| 81 | { |
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| 82 | return (fp->_flags & __SLBF) != 0; |
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| 83 | } |
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| 84 | |||
| 85 | int |
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| 86 | _DEFUN(__freadable, (fp), |
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| 87 | FILE * fp) |
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| 88 | { |
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| 89 | return (fp->_flags & (__SRD | __SRW)) != 0; |
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| 90 | } |
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| 91 | |||
| 92 | int |
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| 93 | _DEFUN(__fwritable, (fp), |
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| 94 | FILE * fp) |
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| 95 | { |
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| 96 | return (fp->_flags & (__SWR | __SRW)) != 0; |
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| 97 | } |
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| 98 | |||
| 99 | int |
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| 100 | _DEFUN(__freading, (fp), |
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| 101 | FILE * fp) |
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| 102 | { |
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| 103 | return (fp->_flags & __SRD) != 0; |
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| 104 | } |
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| 105 | |||
| 106 | int |
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| 107 | _DEFUN(__fwriting, (fp), |
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| 108 | FILE * fp) |
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| 109 | { |
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| 110 | return (fp->_flags & __SWR) != 0; |
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| 111 | } |
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| 112 | |||
| 113 | #endif /* __rtems__ */ |