Date: Sun, 12 May 2013 16:22:11 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r250572 - stable/9/lib/libc/sys Message-ID: <201305121622.r4CGMBkK077141@svn.freebsd.org>
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Author: jilles Date: Sun May 12 16:22:10 2013 New Revision: 250572 URL: http://svnweb.freebsd.org/changeset/base/250572 Log: MFC r249859: getdtablesize(2): Describe what this function actually does. getdtablesize() returns the limit on new file descriptors; this says nothing about existing descriptors. Modified: stable/9/lib/libc/sys/getdtablesize.2 Directory Properties: stable/9/lib/libc/ (props changed) stable/9/lib/libc/sys/ (props changed) Modified: stable/9/lib/libc/sys/getdtablesize.2 ============================================================================== --- stable/9/lib/libc/sys/getdtablesize.2 Sun May 12 16:20:27 2013 (r250571) +++ stable/9/lib/libc/sys/getdtablesize.2 Sun May 12 16:22:10 2013 (r250572) @@ -28,12 +28,12 @@ .\" @(#)getdtablesize.2 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd June 4, 1993 +.Dd April 24, 2013 .Dt GETDTABLESIZE 2 .Os .Sh NAME .Nm getdtablesize -.Nd get descriptor table size +.Nd get file descriptor limit .Sh LIBRARY .Lb libc .Sh SYNOPSIS @@ -41,18 +41,20 @@ .Ft int .Fn getdtablesize void .Sh DESCRIPTION -Each process has a fixed size descriptor table, -which is guaranteed to have at least 20 slots. -The entries in -the descriptor table are numbered with small integers starting at 0. The .Fn getdtablesize -system call returns the size of this table. +system call returns the maximum number of file descriptors +that the current process may open. +The maximum file descriptor number that the system may assign +is the return value minus one. +Existing file descriptor numbers may be higher +if the limit was lowered after they were opened. .Sh SEE ALSO .Xr close 2 , +.Xr closefrom 2 , .Xr dup 2 , -.Xr open 2 , -.Xr select 2 +.Xr getrlimit 2 , +.Xr sysconf 2 .Sh HISTORY The .Fn getdtablesize _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org"
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