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+.\" Hey Emacs! This file is -*- nroff -*- source.
+.\"
+.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
+.\"
+.\" Permission is granted to make and distribute verbatim copies of this
+.\" manual provided the copyright notice and this permission notice are
+.\" preserved on all copies.
+.\"
+.\" Permission is granted to copy and distribute modified versions of this
+.\" manual under the conditions for verbatim copying, provided that the
+.\" entire resulting derived work is distributed under the terms of a
+.\" permission notice identical to this one.
+.\" 
+.\" Since the Linux kernel and libraries are constantly changing, this
+.\" manual page may be incorrect or out-of-date.  The author(s) assume no
+.\" responsibility for errors or omissions, or for damages resulting from
+.\" the use of the information contained herein.  The author(s) may not
+.\" have taken the same level of care in the production of this manual,
+.\" which is licensed free of charge, as they might when working
+.\" professionally.
+.\" 
+.\" Formatted or processed versions of this manual, if unaccompanied by
+.\" the source, must acknowledge the copyright and authors of this work.
+.\"
+.\" Modified 2002-04-15 by Roger Luethi <rl@hellgate.ch> and aeb
+.\"
+.TH GETDTABLESIZE 2 2002-04-15 "Linux 2.4" "Linux Programmer's Manual"
+.SH NAME
+getdtablesize \- get descriptor table size
+.SH SYNOPSIS
+.B #include <unistd.h>
+.sp
+.B int getdtablesize(void);
+.SH DESCRIPTION
+.B getdtablesize
+returns the maximum number of files a process can have open,
+one more than the largest possible value for a file descriptor.
+.SH "RETURN VALUE"
+The current limit on the number of open files per process.
+.SH NOTES
+.B getdtablesize
+is implemented as a libc library function. The glibc version calls
+.BR getrlimit (2)
+and returns the current
+.B RLIMIT_NOFILE
+limit, or
+.B OPEN_MAX
+when that fails.
+The libc4 and libc5 versions return
+.B OPEN_MAX
+(set to 256 since Linux 0.98.4).
+.SH "CONFORMING TO"
+SVr4, 4.4BSD (the
+.B getdtablesize
+function first appeared in BSD 4.2).
+.SH "SEE ALSO"
+.BR close (2),
+.BR dup (2),
+.BR getrlimit (2),
+.BR open (2)