171 lines
3.9 KiB
HTML
171 lines
3.9 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 TMPFILE</TITLE>
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</HEAD><BODY>
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<H1>TMPFILE</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2016-03-15<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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tmpfile - create a temporary file
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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/stdio.h">stdio.h</A>></B>
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<B>FILE *tmpfile(void);</B>
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</PRE>
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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>tmpfile</B>()
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function opens a unique temporary file
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in binary read/write (w+b) mode.
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The file will be automatically deleted when it is closed or the
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program terminates.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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The
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<B>tmpfile</B>()
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function returns a stream descriptor, or NULL if
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a unique filename cannot be generated or the unique file cannot be
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opened.
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In the latter case,
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<I>errno</I>
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is set to indicate the error.
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<A NAME="lbAF"> </A>
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<H2>ERRORS</H2>
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<DL COMPACT>
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<DT id="1"><B>EACCES</B>
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<DD>
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Search permission denied for directory in file's path prefix.
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<DT id="2"><B>EEXIST</B>
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<DD>
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Unable to generate a unique filename.
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<DT id="3"><B>EINTR</B>
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<DD>
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The call was interrupted by a signal; see
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<B><A HREF="/cgi-bin/man/man2html?7+signal">signal</A></B>(7).
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<DT id="4"><B>EMFILE</B>
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<DD>
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The per-process limit on the number of open file descriptors has been reached.
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<DT id="5"><B>ENFILE</B>
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<DD>
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The system-wide limit on the total number of open files has been reached.
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<DT id="6"><B>ENOSPC</B>
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<DD>
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There was no room in the directory to add the new filename.
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<DT id="7"><B>EROFS</B>
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<DD>
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Read-only filesystem.
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</DL>
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<A NAME="lbAG"> </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>tmpfile</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="lbAH"> </A>
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<H2>CONFORMING TO</H2>
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POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD, SUSv2.
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<A NAME="lbAI"> </A>
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<H2>NOTES</H2>
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POSIX.1-2001 specifies:
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an error message may be written to
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<I>stdout</I>
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if the stream
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cannot be opened.
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<P>
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The standard does not specify the directory that
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<B>tmpfile</B>()
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will use.
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Glibc will try the path prefix
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<I>P_tmpdir</I>
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defined
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in
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<I><<A HREF="file:///usr/include/stdio.h">stdio.h</A>></I>,
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and if that fails the directory
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<I>/tmp</I>.
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<A NAME="lbAJ"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+exit">exit</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+mkstemp">mkstemp</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+mktemp">mktemp</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+tempnam">tempnam</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+tmpnam">tmpnam</A></B>(3)
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<A NAME="lbAK"> </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="8"><A HREF="#lbAB">NAME</A><DD>
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<DT id="9"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="10"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="11"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="12"><A HREF="#lbAF">ERRORS</A><DD>
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<DT id="13"><A HREF="#lbAG">ATTRIBUTES</A><DD>
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<DT id="14"><A HREF="#lbAH">CONFORMING TO</A><DD>
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<DT id="15"><A HREF="#lbAI">NOTES</A><DD>
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<DT id="16"><A HREF="#lbAJ">SEE ALSO</A><DD>
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<DT id="17"><A HREF="#lbAK">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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