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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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20 | < |
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21 | |||
22 | INDEX |
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23 | fileno |
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24 | |||
25 | ANSI_SYNOPSIS |
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26 | #include |
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27 | int fileno(FILE *<[fp]>); |
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28 | |||
29 | TRAD_SYNOPSIS |
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30 | #include |
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31 | int fileno(<[fp]>) |
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32 | FILE *<[fp]>; |
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33 | |||
34 | DESCRIPTION |
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35 | You can use < |
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36 | |||
37 | RETURNS |
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38 | < |
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39 | If <[fp]> is not an open stream, < |
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40 | |||
41 | PORTABILITY |
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42 | < |
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43 | POSIX requires < |
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44 | |||
45 | Supporting OS subroutines required: none. |
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46 | */ |
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47 | |||
48 | #include <_ansi.h> |
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49 | #include |
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4921 | Serge | 50 | #include |
4349 | Serge | 51 | #include "local.h" |
52 | |||
53 | int |
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54 | _DEFUN(fileno, (f), |
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55 | FILE * f) |
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56 | { |
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57 | int result; |
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58 | CHECK_INIT (_REENT, f); |
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4921 | Serge | 59 | _newlib_flockfile_start (f); |
60 | if (f->_flags) |
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4349 | Serge | 61 | result = __sfileno (f); |
4921 | Serge | 62 | else |
63 | { |
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64 | result = -1; |
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65 | _REENT->_errno = EBADF; |
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66 | } |
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67 | _newlib_flockfile_end (f); |
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4349 | Serge | 68 | return result; |
69 | } |