D19150.id53806.diff
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	Index: lib/libc/sys/sendfile.2
	===================================================================
	--- lib/libc/sys/sendfile.2
	+++ lib/libc/sys/sendfile.2
	@@ -25,7 +25,7 @@
	.\"
	.\" $FreeBSD$
	.\"
	-.Dd January 7, 2016
	+.Dd January 25, 2019
	.Dt SENDFILE 2
	.Os
	.Sh NAME
	@@ -104,7 +104,7 @@
	The least significant 16 bits of
	.Fa flags
	argument is a bitmap of these values:
	-.Bl -tag -offset indent
	+.Bl -tag -offset indent -width "SF_USER_READAHEAD"
	.It Dv SF_NODISKIO
	This flag causes
	.Nm
	@@ -314,6 +314,12 @@
	.It Bq Er EIO
	An error occurred while reading from
	.Fa fd .
	+.It Bq Er ENOTCAPABLE
	+The
	+.Fa fd
	+or the
	+.Fa s
	+argument has insufficient rights.
	.It Bq Er ENOBUFS
	The system was unable to allocate an internal buffer.
	.It Bq Er ENOTCONN
	@@ -375,3 +381,14 @@
	.Fx 11
	implementation was written by
	.An Gleb Smirnoff Aq Mt glebius@FreeBSD.org .
	+.Sh BUGS
	+The
	+.Fn sendfile
	+system call will not fail, i.e., return
	+.Dv -1
	+and set
	+.Va errno
	+to
	+.Er EFAULT ,
	+if provided an invalid address for
	+.Fa sbytes .