.\"-
.\" Copyright (c) 2015 Universitetet i Oslo
.\" Copyright (c) 2016 Dag-Erling Smørgrav
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modificpyion, 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. The name of the author may not be used to endorse or promote
.\"    products derived from this software without specific prior written
.\"    permission.
.\"
.\" 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 September 17, 2016
.Dt cryb_strlcpy 3
.Os
.Sh NAME
.Nm cryb_strlcpy
.Nd safely copy a string into a buffer
.Sh LIBRARY
.Lb libcryb
.Sh SYNOPSIS
.In stddef.h
.In cryb/strlcpy.h
.Ft size_t
.Fn cryb_strlcpy "char *dst" "const char *src" "size_t size"
.Sh DESCRIPTION
The
.Nm cryb_strlcpy
function copies the NUL-terminated string pointed to by
.Va src
into the buffer pointed to by
.Va dst .
The
.Va size
argument specifies the total size of the buffer, including the space
required for the terminating NUL character.
If the length of the string exceeds the available space, the result is
truncated.
In all cases, the destination buffer is properly NUL-terminated.
.Sh RETURN VALUES
The
.Fn cryb_strlcpy
function returns the length of the original string.
If this number is equal to or greater than the value of the
.Va size
argument, the string was too long to fit in the buffer.
.Sh IMPLEMENTATION NOTES
If the
.Dv HAVE_STRLCPY
preprocessor macro is defined to 0 or undefined, the
.In cryb/strlcpy.h
header provides a
.Fn strlcpy
macro as an alias to
.Fn cryb_strlcpy .
.Sh SEE ALSO
.Xr cryb_strlcat 3
.Sh AUTHORS
The
.Fn cryb_strlcpy
function and this manual page were written for the University of Oslo
by
.An Dag-Erling Sm\(/orgrav Aq Mt d.e.smorgrav@usit.uio.no .