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82 lines
2.8 KiB
Groff
82 lines
2.8 KiB
Groff
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.\"-
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.\" Copyright (c) 2015 Universitetet i Oslo
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modificpyion, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd February 5, 2015
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.Dt tsd_strlcpy 3
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.Os
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.Sh NAME
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.Nm tsd_strlcpy
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.Nd safely copy a string into a buffer
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.Sh LIBRARY
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.Lb libtsd
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.Sh SYNOPSIS
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.In stdint.h
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.In tsd/strutil.h
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.Ft size_t
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.Fn tsd_strlcpy "char *dst" "const char *src" "size_t size"
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.Sh DESCRIPTION
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The
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.Nm tsd_strlcpy
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function copies the NUL-terminated string pointed to by
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.Va src
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into the buffer pointed to by
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.Va dst .
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The
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.Va size
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argument specifies the total size of the buffer, including the space
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required for the terminating NUL character.
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If the length of the string exceeds the available space, the result is
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truncated.
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In all cases, the destination buffer is properly NUL-terminated.
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.Sh RETURN VALUES
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The
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.Fn tsd_strlcpy
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function returns the length of the original string.
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If this number is equal to or greater than the value of the
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.Va size
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argument, the string was too long to fit in the buffer.
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.Sh IMPLEMENTATION NOTES
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If the
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.Dv HAVE_STRLCPY
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preprocessor macro is defined to 0 or undefined, the
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.In tsd/sha1.h
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header provides a
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.Fn strlcpy
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macro as an alias to
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.Fn tsd_strlcpy .
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.Sh SEE ALSO
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.Xr strlcat 3 ,
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.Xr strlcpy 3 ,
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.Xr tsd_strlcat 3
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.Sh AUTHORS
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The
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.Fn tsd_strlcpy
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function and this manual page were written for the University of Oslo
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by
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.An Dag-Erling Sm\(/orgrav Aq Mt d.e.smorgrav@usit.uio.no .
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