179 lines
3.5 KiB
HTML
179 lines
3.5 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of STPNCPY</TITLE>
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</HEAD><BODY>
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<H1>STPNCPY</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2019-03-06<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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stpncpy - copy a fixed-size string, returning a pointer to its end
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/string.h">string.h</A>></B>
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<B>char *stpncpy(char *</B><I>dest</I><B>, const char *</B><I>src</I><B>, size_t </B><I>n</I><B>);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>stpncpy</B>():
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<DL COMPACT><DT id="1"><DD>
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<DL COMPACT>
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<DT id="2">Since glibc 2.10:<DD>
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_POSIX_C_SOURCE >= 200809L
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<DT id="3">Before glibc 2.10:<DD>
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_GNU_SOURCE
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</DL>
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>stpncpy</B>()
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function copies at most
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<I>n</I>
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characters from the string
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pointed to by
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<I>src</I>,
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including the terminating null byte ('\0'),
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to the array pointed to by
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<I>dest</I>.
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Exactly
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<I>n</I>
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characters are written at
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<I>dest</I>.
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If the length
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<I>strlen(src)</I>
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is smaller than
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<I>n</I>,
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the
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remaining characters in the array pointed to by
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<I>dest</I>
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are filled
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with null bytes ('\0'),
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If the length
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<I>strlen(src)</I>
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is greater than or equal to
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<I>n</I>,
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the string pointed to by
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<I>dest</I>
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will
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not be null-terminated.
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<P>
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The strings may not overlap.
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<P>
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The programmer must ensure that there is room for at least
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<I>n</I>
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characters
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at
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<I>dest</I>.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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<B>stpncpy</B>()
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returns a pointer to the terminating null byte
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in
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<I>dest</I>,
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or, if
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<I>dest</I>
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is not null-terminated,
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<I>dest</I>+<I>n</I>.
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<A NAME="lbAF"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>stpncpy</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<A NAME="lbAG"> </A>
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<H2>CONFORMING TO</H2>
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This function was added to POSIX.1-2008.
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Before that, it was a GNU extension.
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It first appeared in version 1.07 of the GNU C library in 1993.
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+strncpy">strncpy</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+wcpncpy">wcpncpy</A></B>(3)
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<A NAME="lbAI"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="4"><A HREF="#lbAB">NAME</A><DD>
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<DT id="5"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="6"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="7"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="8"><A HREF="#lbAF">ATTRIBUTES</A><DD>
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<DT id="9"><A HREF="#lbAG">CONFORMING TO</A><DD>
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<DT id="10"><A HREF="#lbAH">SEE ALSO</A><DD>
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<DT id="11"><A HREF="#lbAI">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:58 GMT, March 31, 2021
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</BODY>
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</HTML>
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