1 files changed, 102 insertions, 0 deletions
diff --git a/src/lib/libc/string/strlen.3 b/src/lib/libc/string/strlen.3
new file mode 100644
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+++ b/src/lib/libc/string/strlen.3
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+.\" Copyright (c) 1990, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" 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.
+.\" 3. 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+.\"
+.\"     $OpenBSD: strlen.3,v 1.9 2010/05/24 21:27:25 millert Exp $
+.\"
+.Dd $Mdocdate: May 24 2010 $
+.Dt STRLEN 3
+.Os
+.Sh NAME
+.Nm strlen ,
+.Nm strnlen
+.Nd find length of a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft size_t
+.Fn strlen "const char *s"
+.Ft size_t
+.Fn strnlen "const char *s" "size_t maxlen"
+.Sh DESCRIPTION
+The
+.Fn strlen
+function computes the length of the string
+.Fa s .
+.Pp
+The
+.Fn strnlen
+function computes the length of the string
+.Fa s ,
+up to
+.Fa maxlen
+characters.
+The
+.Fn strnlen
+function will never attempt to address more than
+.Fa maxlen
+characters, making it suitable for use with character arrays that are
+not guaranteed to be NUL-terminated.
+.Sh RETURN VALUES
+The
+.Fn strlen
+function returns the number of characters that precede the terminating
+.Tn NUL
+character.
+.Pp
+The
+.Fn strnlen
+function returns the number of characters that precede the terminating
+.Tn NUL
+or
+.Fa maxlen ,
+whichever is smaller.
+.Sh SEE ALSO
+.Xr string 3
+.Sh STANDARDS
+The
+.Fn strlen
+function conforms to
+.St -ansiC .
+.Pp
+The
+.Fn strlen
+and
+.Fn strnlen
+functions conform to
+.St -p1003.1-2008 .
+.Sh HISTORY
+The
+.Fn strlen
+function first appeared in
+.At v7 .
+The
+.Fn strnlen
+function first appeared in
+.Ox 4.8 .

diff --git a/src/lib/libc/string/strlen.3 b/src/lib/libc/string/strlen.3 new file mode 100644 index 0000000000..3607fde515 --- /dev/null +++ b/src/lib/libc/string/strlen.3
@@ -0,0 +1,102 @@
	1	.\" Copyright (c) 1990, 1991 The Regents of the University of California.
	2	.\" All rights reserved.
	3	.\"
	4	.\" This code is derived from software contributed to Berkeley by
	5	.\" Chris Torek and the American National Standards Committee X3,
	6	.\" on Information Processing Systems.
	7	.\"
	8	.\" Redistribution and use in source and binary forms, with or without
	9	.\" modification, are permitted provided that the following conditions
	10	.\" are met:
	11	.\" 1. Redistributions of source code must retain the above copyright
	12	.\" notice, this list of conditions and the following disclaimer.
	13	.\" 2. Redistributions in binary form must reproduce the above copyright
	14	.\" notice, this list of conditions and the following disclaimer in the
	15	.\" documentation and/or other materials provided with the distribution.
	16	.\" 3. Neither the name of the University nor the names of its contributors
	17	.\" may be used to endorse or promote products derived from this software
	18	.\" without specific prior written permission.
	19	.\"
	20	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	21	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	24	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	.\" SUCH DAMAGE.
	31	.\"
	32	.\" $OpenBSD: strlen.3,v 1.9 2010/05/24 21:27:25 millert Exp $
	33	.\"
	34	.Dd $Mdocdate: May 24 2010 $
	35	.Dt STRLEN 3
	36	.Os
	37	.Sh NAME
	38	.Nm strlen ,
	39	.Nm strnlen
	40	.Nd find length of a string
	41	.Sh SYNOPSIS
	42	.Fd #include <string.h>
	43	.Ft size_t
	44	.Fn strlen "const char *s"
	45	.Ft size_t
	46	.Fn strnlen "const char *s" "size_t maxlen"
	47	.Sh DESCRIPTION
	48	The
	49	.Fn strlen
	50	function computes the length of the string
	51	.Fa s .
	52	.Pp
	53	The
	54	.Fn strnlen
	55	function computes the length of the string
	56	.Fa s ,
	57	up to
	58	.Fa maxlen
	59	characters.
	60	The
	61	.Fn strnlen
	62	function will never attempt to address more than
	63	.Fa maxlen
	64	characters, making it suitable for use with character arrays that are
	65	not guaranteed to be NUL-terminated.
	66	.Sh RETURN VALUES
	67	The
	68	.Fn strlen
	69	function returns the number of characters that precede the terminating
	70	.Tn NUL
	71	character.
	72	.Pp
	73	The
	74	.Fn strnlen
	75	function returns the number of characters that precede the terminating
	76	.Tn NUL
	77	or
	78	.Fa maxlen ,
	79	whichever is smaller.
	80	.Sh SEE ALSO
	81	.Xr string 3
	82	.Sh STANDARDS
	83	The
	84	.Fn strlen
	85	function conforms to
	86	.St -ansiC .
	87	.Pp
	88	The
	89	.Fn strlen
	90	and
	91	.Fn strnlen
	92	functions conform to
	93	.St -p1003.1-2008 .
	94	.Sh HISTORY
	95	The
	96	.Fn strlen
	97	function first appeared in
	98	.At v7 .
	99	The
	100	.Fn strnlen
	101	function first appeared in
	102	.Ox 4.8 .