| | 1 | .\" Copyright (c) 1983, 1991, 1993 |
| | 2 | .\" The Regents of the University of California. All rights reserved. |
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| | 14 | .\" This product includes software developed by the University of |
| | 15 | .\" California, Berkeley and its contributors. |
| | 16 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 17 | .\" may be used to endorse or promote products derived from this software |
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| | 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| | 32 | .\" @(#)getdtablesize.2 8.1 (Berkeley) 6/4/93 |
| | 33 | .\" $FreeBSD: src/lib/libc/sys/getdtablesize.2,v 1.4.2.3 2001/12/14 18:34:00 ru Exp $ |
| | 34 | .\" |
| | 35 | .Dd June 4, 1993 |
| | 36 | .Dt GETDTABLESIZE 2 |
| | 37 | .Os |
| | 38 | .Sh NAME |
| | 39 | .Nm getdtablesize |
| | 40 | .Nd get descriptor table size |
| | 41 | .Sh LIBRARY |
| | 42 | .Lb libc |
| | 43 | .Sh SYNOPSIS |
| | 44 | .In unistd.h |
| | 45 | .Ft int |
| | 46 | .Fn getdtablesize void |
| | 47 | .Sh DESCRIPTION |
| | 48 | Each process has a fixed size descriptor table, |
| | 49 | which is guaranteed to have at least 20 slots. The entries in |
| | 50 | the descriptor table are numbered with small integers starting at 0. |
| | 51 | The call |
| | 52 | .Fn getdtablesize |
| | 53 | returns the size of this table. |
| | 54 | .Sh LEGACY |
| | 55 | The |
| | 56 | .Xr getrlimit 2 |
| | 57 | function returns a value of type |
| | 58 | .Ft rlim_t . |
| | 59 | This interface, returning an |
| | 60 | .Ft int , |
| | 61 | may have problems representing appropriate values in the future. |
| | 62 | Applications should use the |
| | 63 | .Xr getrlimit 2 |
| | 64 | function instead. |
| | 65 | .Sh SEE ALSO |
| | 66 | .Xr close 2 , |
| | 67 | .Xr dup 2 , |
| | 68 | .Xr getrlimit 2 , |
| | 69 | .Xr open 2 , |
| | 70 | .Xr select 2 |
| | 71 | .Sh HISTORY |
| | 72 | The |
| | 73 | .Fn getdtablesize |
| | 74 | function call appeared in |
| | 75 | .Bx 4.2 . |
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