1 files changed, 23 insertions, 28 deletions
diff --git a/src/lib/libc/string/memcpy.3 b/src/lib/libc/string/memcpy.3
index 3f4bb643c9..8df2a785b9 100644
--- a/src/lib/libc/string/memcpy.3
+++ b/src/lib/libc/string/memcpy.3
@@ -1,3 +1,5 @@
+.\"     $OpenBSD: memcpy.3,v 1.10 2013/06/05 03:39:23 tedu Exp $
+.\"
 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
 .\" All rights reserved.
 .\"
@@ -13,11 +15,7 @@
 .\" 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.
-.\" 3. All advertising materials mentioning features or use of this software
+.\" 3. Neither the name of the University nor the names of its contributors
-.\"    must display the following acknowledgement:
-.\"     This product includes software developed by the University of
-.\"     California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
@@ -33,52 +31,49 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     from: @(#)memcpy.3      5.5 (Berkeley) 6/29/91
+.Dd $Mdocdate: June 5 2013 $
-.\"     $Id: memcpy.3,v 1.1.1.1 1995/10/18 08:42:21 deraadt Exp $
-.\"
-.Dd June 29, 1991
 .Dt MEMCPY 3
 .Os
 .Sh NAME
 .Nm memcpy
-.Nd copy byte string
+.Nd copy bytes
 .Sh SYNOPSIS
-.Fd #include <string.h>
+.In string.h
 .Ft void *
 .Fn memcpy "void *dst" "const void *src" "size_t len"
 .Sh DESCRIPTION
 The
 .Fn memcpy
-function
+function copies
-copies
 .Fa len
-bytes from string
+bytes from buffer
 .Fa src
-to string
+to buffer
 .Fa dst .
+If the two buffers may overlap,
+.Xr memmove 3
+must be used instead.
 .Sh RETURN VALUES
 The
 .Fn memcpy
-function
+function returns the original value of
-returns the original value of
 .Fa dst .
 .Sh SEE ALSO
 .Xr bcopy 3 ,
 .Xr memccpy 3 ,
 .Xr memmove 3 ,
-.Xr strcpy 3
+.Xr strcpy 3 ,
+.Xr strlcpy 3 ,
+.Xr wmemcpy 3
 .Sh STANDARDS
 The
 .Fn memcpy
-function
+function conforms to
-conforms to
 .St -ansiC .
-.Sh BUGS
+.Sh HISTORY
-In this implementation
+The
 .Fn memcpy
-is implemented using
+function first appeared in
-.Xr bcopy 3 ,
+.At V
-and therefore the strings may overlap.
+and was reimplemented for
-On other systems, copying overlapping strings may produce surprises.
+.Bx 4.3 Tahoe .
-A simpler solution is to not use
-.Fn memcpy .

diff --git a/src/lib/libc/string/memcpy.3 b/src/lib/libc/string/memcpy.3 index 3f4bb643c9..8df2a785b9 100644 --- a/src/lib/libc/string/memcpy.3 +++ b/src/lib/libc/string/memcpy.3
@@ -1,3 +1,5 @@
		1	.\" $OpenBSD: memcpy.3,v 1.10 2013/06/05 03:39:23 tedu Exp $
		2	.\"
1	.\" Copyright (c) 1990, 1991 The Regents of the University of California.	3	.\" Copyright (c) 1990, 1991 The Regents of the University of California.
2	.\" All rights reserved.	4	.\" All rights reserved.
3	.\"	5	.\"
@@ -13,11 +15,7 @@
13	.\" 2. Redistributions in binary form must reproduce the above copyright	15	.\" 2. Redistributions in binary form must reproduce the above copyright
14	.\" notice, this list of conditions and the following disclaimer in the	16	.\" notice, this list of conditions and the following disclaimer in the
15	.\" documentation and/or other materials provided with the distribution.	17	.\" documentation and/or other materials provided with the distribution.
16	.\" 3. All advertising materials mentioning features or use of this software	18	.\" 3. Neither the name of the University nor the names of its contributors
17	.\" must display the following acknowledgement:
18	.\" This product includes software developed by the University of
19	.\" California, Berkeley and its contributors.
20	.\" 4. Neither the name of the University nor the names of its contributors
21	.\" may be used to endorse or promote products derived from this software	19	.\" may be used to endorse or promote products derived from this software
22	.\" without specific prior written permission.	20	.\" without specific prior written permission.
23	.\"	21	.\"
@@ -33,52 +31,49 @@
33	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF	31	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34	.\" SUCH DAMAGE.	32	.\" SUCH DAMAGE.
35	.\"	33	.\"
36	.\" from: @(#)memcpy.3 5.5 (Berkeley) 6/29/91	34	.Dd $Mdocdate: June 5 2013 $
37	.\" $Id: memcpy.3,v 1.1.1.1 1995/10/18 08:42:21 deraadt Exp $
38	.\"
39	.Dd June 29, 1991
40	.Dt MEMCPY 3	35	.Dt MEMCPY 3
41	.Os	36	.Os
42	.Sh NAME	37	.Sh NAME
43	.Nm memcpy	38	.Nm memcpy
44	.Nd copy byte string	39	.Nd copy bytes
45	.Sh SYNOPSIS	40	.Sh SYNOPSIS
46	.Fd #include <string.h>	41	.In string.h
47	.Ft void *	42	.Ft void *
48	.Fn memcpy "void dst" "const void src" "size_t len"	43	.Fn memcpy "void dst" "const void src" "size_t len"
49	.Sh DESCRIPTION	44	.Sh DESCRIPTION
50	The	45	The
51	.Fn memcpy	46	.Fn memcpy
52	function	47	function copies
53	copies
54	.Fa len	48	.Fa len
55	bytes from string	49	bytes from buffer
56	.Fa src	50	.Fa src
57	to string	51	to buffer
58	.Fa dst .	52	.Fa dst .
		53	If the two buffers may overlap,
		54	.Xr memmove 3
		55	must be used instead.
59	.Sh RETURN VALUES	56	.Sh RETURN VALUES
60	The	57	The
61	.Fn memcpy	58	.Fn memcpy
62	function	59	function returns the original value of
63	returns the original value of
64	.Fa dst .	60	.Fa dst .
65	.Sh SEE ALSO	61	.Sh SEE ALSO
66	.Xr bcopy 3 ,	62	.Xr bcopy 3 ,
67	.Xr memccpy 3 ,	63	.Xr memccpy 3 ,
68	.Xr memmove 3 ,	64	.Xr memmove 3 ,
69	.Xr strcpy 3	65	.Xr strcpy 3 ,
		66	.Xr strlcpy 3 ,
		67	.Xr wmemcpy 3
70	.Sh STANDARDS	68	.Sh STANDARDS
71	The	69	The
72	.Fn memcpy	70	.Fn memcpy
73	function	71	function conforms to
74	conforms to
75	.St -ansiC .	72	.St -ansiC .
76	.Sh BUGS	73	.Sh HISTORY
77	In this implementation	74	The
78	.Fn memcpy	75	.Fn memcpy
79	is implemented using	76	function first appeared in
80	.Xr bcopy 3 ,	77	.At V
81	and therefore the strings may overlap.	78	and was reimplemented for
82	On other systems, copying overlapping strings may produce surprises.	79	.Bx 4.3 Tahoe .
83	A simpler solution is to not use
84	.Fn memcpy .