new syscall closefrom(2). ok deraadt millert

4 files changed, 66 insertions, 6 deletions

diff --git a/lib/libc/shlib_version b/lib/libc/shlib_version
index 76dddc88a6b..48f1de2da8a 100644
--- a/lib/libc/shlib_version
+++ b/lib/libc/shlib_version
@@ -1,2 +1,2 @@
 major=30
-minor=1 # note: remember to update minor in ../libpthread/shlib_version
+minor=3 # note: remember to update minor in ../libpthread/shlib_version
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index ee78625d6b0..fc16d954812 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.inc,v 1.66 2003/05/10 17:52:17 miod Exp $
+#	$OpenBSD: Makefile.inc,v 1.67 2004/01/12 18:27:28 tedu Exp $
 #	$NetBSD: Makefile.inc,v 1.35 1995/10/16 23:49:07 jtc Exp $
 #	@(#)Makefile.inc	8.1 (Berkeley) 6/17/93
 
@@ -31,7 +31,7 @@ SRCS+=	stack_protector.c
 # modules with default implementations on all architectures:
 ASM=	accept.o access.o acct.o adjtime.o bind.o chdir.o chflags.o chmod.o \
 	chown.o chroot.o clock_gettime.o clock_settime.o clock_getres.o \
-	close.o connect.o dup.o dup2.o execve.o fchdir.o \
+	close.o closefrom.o connect.o dup.o dup2.o execve.o fchdir.o \
 	fchflags.o fchmod.o fchown.o fcntl.o fhopen.o fhstat.o fhstatfs.o \
 	flock.o fpathconf.o fstat.o \
 	fstatfs.o fsync.o futimes.o getdirentries.o getegid.o geteuid.o \
@@ -208,8 +208,8 @@ LintSysPseudoNoerr.c: ${LIBCSRCDIR}/sys/makelintstub.sh \
 	    -s ${DESTDIR}/usr/include/sys/syscall.h ${PSEUDONOERR}
 
 MAN+=	accept.2 access.2 acct.2 adjtime.2 bind.2 brk.2 chdir.2 chflags.2 \
-	chmod.2 chown.2 chroot.2 clock_gettime.2 close.2 connect.2 dup.2 \
-	execve.2 _exit.2 fcntl.2 fhopen.2 \
+	chmod.2 chown.2 chroot.2 clock_gettime.2 close.2 closefrom.2 connect.2 \
+	dup.2 execve.2 _exit.2 fcntl.2 fhopen.2 \
 	flock.2 fork.2 fsync.2 getdirentries.2 \
 	getfh.2 getfsstat.2 getgid.2 getgroups.2 getitimer.2 getlogin.2 \
 	getpeername.2 getpeereid.2 getpgrp.2 \
diff --git a/lib/libc/sys/closefrom.2 b/lib/libc/sys/closefrom.2
new file mode 100644
index 00000000000..e8821e40d60
--- /dev/null
+++ b/lib/libc/sys/closefrom.2
@@ -0,0 +1,60 @@
+.\"	$OpenBSD: closefrom.2,v 1.1 2004/01/12 18:27:28 tedu Exp $
+.\"
+.\" Copyright (c) 2004 Ted Unangst.  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.
+.Dd Jan 11, 2004
+.Dt CLOSEFROM 2
+.Os
+.Sh NAME
+.Nm closefrom
+.Nd delete many descriptors
+.Sh SYNOPSIS
+.Fd #include <unistd.h>
+.Ft int
+.Fn closefrom "int fd"
+.Sh DESCRIPTION
+The
+.Fn closefrom
+call deletes all descriptors numbered
+.Fa fd
+and higher from the per-process file descriptor table.
+It is effectively the same as calling
+.Xr close 2
+on each descriptor.
+.Sh RETURN VALUES
+Upon successful completion, a value of 0 is returned.
+Otherwise, a value of \-1 is returned and the global integer variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn closefrom
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EBADF
+.Fa fd
+is greater than any open file descriptor.
+.It Bq Er EINTR
+An interrupt was received.
+.El
+.Sh SEE ALSO
+.Xr close 2
diff --git a/lib/libpthread/shlib_version b/lib/libpthread/shlib_version
index ba5a3fee584..b363be4447c 100644
--- a/lib/libpthread/shlib_version
+++ b/lib/libpthread/shlib_version
@@ -1,2 +1,2 @@
 major=2
-minor=2
+minor=3