Rev 4921 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 1990 The Regents of the University of California. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms are permitted |
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| 6 | * provided that the above copyright notice and this paragraph are |
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| 7 | * duplicated in all such forms and that any documentation, |
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| 8 | * advertising materials, and other materials related to such |
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| 9 | * distribution and use acknowledge that the software was developed |
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| 10 | * by the University of California, Berkeley. The name of the |
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| 11 | * University may not be used to endorse or promote products derived |
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| 12 | * from this software without specific prior written permission. |
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| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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| 15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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| 16 | */ |
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| 17 | |||
| 18 | /* |
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| 19 | FUNCTION |
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| 6099 | serge | 20 | < |
| 4349 | Serge | 21 | |
| 22 | INDEX |
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| 23 | fileno |
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| 6099 | serge | 24 | INDEX |
| 25 | fileno_unlocked |
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| 4349 | Serge | 26 | |
| 27 | ANSI_SYNOPSIS |
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| 28 | #include |
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| 29 | int fileno(FILE *<[fp]>); |
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| 30 | |||
| 6099 | serge | 31 | #define _BSD_SOURCE |
| 32 | #include |
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| 33 | int fileno_unlocked(FILE *<[fp]>); |
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| 34 | |||
| 4349 | Serge | 35 | TRAD_SYNOPSIS |
| 36 | #include |
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| 37 | int fileno(<[fp]>) |
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| 38 | FILE *<[fp]>; |
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| 39 | |||
| 6099 | serge | 40 | #define _BSD_SOURCE |
| 41 | #include |
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| 42 | int fileno_unlocked(<[fp]>) |
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| 43 | FILE *<[fp]>; |
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| 44 | |||
| 4349 | Serge | 45 | DESCRIPTION |
| 46 | You can use < |
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| 47 | |||
| 6099 | serge | 48 | < |
| 49 | < |
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| 50 | protected by flockfile() (or ftrylockfile()) and funlockfile(). This |
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| 51 | function may safely be used in a multi-threaded program if and only |
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| 52 | if they are called while the invoking thread owns the (FILE *) |
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| 53 | object, as is the case after a successful call to the flockfile() or |
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| 54 | ftrylockfile() functions. If threads are disabled, then |
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| 55 | < |
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| 56 | |||
| 4349 | Serge | 57 | RETURNS |
| 58 | < |
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| 59 | If <[fp]> is not an open stream, < |
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| 60 | |||
| 61 | PORTABILITY |
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| 62 | < |
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| 63 | POSIX requires < |
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| 64 | |||
| 6099 | serge | 65 | < |
| 66 | |||
| 4349 | Serge | 67 | Supporting OS subroutines required: none. |
| 68 | */ |
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| 69 | |||
| 70 | #include <_ansi.h> |
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| 71 | #include |
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| 4921 | Serge | 72 | #include |
| 4349 | Serge | 73 | #include "local.h" |
| 74 | |||
| 75 | int |
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| 76 | _DEFUN(fileno, (f), |
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| 77 | FILE * f) |
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| 78 | { |
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| 79 | int result; |
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| 80 | CHECK_INIT (_REENT, f); |
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| 4921 | Serge | 81 | _newlib_flockfile_start (f); |
| 82 | if (f->_flags) |
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| 6099 | serge | 83 | result = __sfileno (f); |
| 4921 | Serge | 84 | else |
| 85 | { |
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| 86 | result = -1; |
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| 87 | _REENT->_errno = EBADF; |
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| 88 | } |
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| 89 | _newlib_flockfile_end (f); |
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| 4349 | Serge | 90 | return result; |
| 91 | } |