4 files changed, 58 insertions, 1 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index 4221677e67ca..e0064fce99e3 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -63,7 +63,7 @@ MAN+=	_exit.2 abort2.2 accept.2 access.2 acct.2  adjtime.2 \
 	aio_cancel.2 aio_error.2 aio_read.2 aio_return.2 \
 	aio_suspend.2 aio_waitcomplete.2 aio_write.2 \
 	bind.2 brk.2 chdir.2 chflags.2 \
-	chmod.2 chown.2 chroot.2 clock_gettime.2 close.2 \
+	chmod.2 chown.2 chroot.2 clock_gettime.2 close.2 closefrom.2 \
 	connect.2 cpuset.2 cpuset_getaffinity.2 dup.2 execve.2 \
 	extattr_get_file.2 fcntl.2 fhopen.2 flock.2 fork.2 fsync.2 \
 	getdirentries.2 getdtablesize.2 \
diff --git a/lib/libc/sys/Symbol.map b/lib/libc/sys/Symbol.map
index e156ff3ca8f6..68f50f55dfd7 100644
--- a/lib/libc/sys/Symbol.map
+++ b/lib/libc/sys/Symbol.map
@@ -337,6 +337,7 @@ FBSD_1.0 {
 };
 
 FBSD_1.1 {
+	closefrom;
 	cpuset;
 	cpuset_getid;
 	cpuset_setid;
@@ -458,6 +459,8 @@ FBSDprivate_1.0 {
 	__sys_clock_settime;
 	_close;
 	__sys_close;
+	_closefrom;
+	__sys_closefrom;
 	_connect;
 	__sys_connect;
 	_cpuset;
diff --git a/lib/libc/sys/close.2 b/lib/libc/sys/close.2
index aef03796222e..524322b1517b 100644
--- a/lib/libc/sys/close.2
+++ b/lib/libc/sys/close.2
@@ -120,6 +120,7 @@ before all pending data was delivered.
 .El
 .Sh SEE ALSO
 .Xr accept 2 ,
+.Xr closefrom 2 ,
 .Xr execve 2 ,
 .Xr fcntl 2 ,
 .Xr flock 2 ,
diff --git a/lib/libc/sys/closefrom.2 b/lib/libc/sys/closefrom.2
new file mode 100644
index 000000000000..ffaa0012bae9
--- /dev/null
+++ b/lib/libc/sys/closefrom.2
@@ -0,0 +1,53 @@
+.\" Copyright (c) 2009 Advanced Computing Technologies LLC
+.\" Written by: John H. Baldwin <jhb@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd June 12, 2009
+.Dt CLOSEFROM 2
+.Os
+.Sh NAME
+.Nm closefrom
+.Nd delete open file descriptors
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In unistd.h
+.Ft void
+.Fn closefrom "int lowfd"
+.Sh DESCRIPTION
+The
+.Fn closefrom
+system call deletes all open file descriptors greater than or equal to
+.Fa lowfd
+from the per-process object reference table.
+Any errors encountered while closing file descriptors are ignored.
+.Sh SEE ALSO
+.Xr close 2
+.Sh HISTORY
+The
+.Fn closefrom
+function first appeared in
+.Fx 8.0 .