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authorderaadt <deraadt@openbsd.org>2012-04-11 14:08:27 +0000
committerderaadt <deraadt@openbsd.org>2012-04-11 14:08:27 +0000
commita91ddabe038a89f14dcd50f59b53824bae31adc2 (patch)
tree3c4cc3a016dcb88d98cdcfc166b13eed1e6da5ea /lib/libc
parentguenther and kettenis say THREAD_PID_OFFSET shouldn't be subtracted (diff)
downloadwireguard-openbsd-a91ddabe038a89f14dcd50f59b53824bae31adc2.tar.xz
wireguard-openbsd-a91ddabe038a89f14dcd50f59b53824bae31adc2.zip
In sendmsg() permit at most 10% of maxfiles to be in-flight
during CMSG_DATA SCM_RIGHTS fd transfers. If this is exceeded, return EMFILE. ok claudio guenther gilles
Diffstat (limited to 'lib/libc')
-rw-r--r--lib/libc/sys/send.29
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/libc/sys/send.2 b/lib/libc/sys/send.2
index 35361ef5368..d58588f5c91 100644
--- a/lib/libc/sys/send.2
+++ b/lib/libc/sys/send.2
@@ -1,4 +1,4 @@
-.\" $OpenBSD: send.2,v 1.25 2011/12/24 08:46:48 jmc Exp $
+.\" $OpenBSD: send.2,v 1.26 2012/04/11 14:08:27 deraadt Exp $
.\" $NetBSD: send.2,v 1.6 1996/01/15 01:17:18 thorpej Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
@@ -30,7 +30,7 @@
.\"
.\" @(#)send.2 8.2 (Berkeley) 2/21/94
.\"
-.Dd $Mdocdate: December 24 2011 $
+.Dd $Mdocdate: April 11 2012 $
.Dt SEND 2
.Os
.Sh NAME
@@ -221,6 +221,11 @@ was less than 0 or larger than
.Dv IOV_MAX .
.It Bq Er EAFNOSUPPORT
Addresses in the specified address family cannot be used with this socket.
+.It Bq Er EMFILE
+The message contains control information utilizing
+.Xr CMSG_DATA 3
+to pass file descriptors, but too many file descriptors
+are already in-flight.
.El
.Sh SEE ALSO
.Xr fcntl 2 ,