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+'\" t
+.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.\" References consulted:
+.\"     Linux libc source code
+.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
+.\"     386BSD man pages
+.\" Modified Sat Jul 24 17:46:57 1993 by Rik Faith (faith@cs.unc.edu)
+.\" Modified 2001-11-17, aeb
+.TH tmpfile 3 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+tmpfile \- create a temporary file
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
+.SH SYNOPSIS
+.nf
+.B #include <stdio.h>
+.P
+.B FILE *tmpfile(void);
+.fi
+.SH DESCRIPTION
+The
+.BR tmpfile ()
+function opens a unique temporary file
+in binary read/write (w+b) mode.
+The file will be automatically deleted when it is closed or the
+program terminates.
+.SH RETURN VALUE
+The
+.BR tmpfile ()
+function returns a stream descriptor, or NULL if
+a unique filename cannot be generated or the unique file cannot be
+opened.
+In the latter case,
+.I errno
+is set to indicate the error.
+.SH ERRORS
+.TP
+.B EACCES
+Search permission denied for directory in file's path prefix.
+.TP
+.B EEXIST
+Unable to generate a unique filename.
+.TP
+.B EINTR
+The call was interrupted by a signal; see
+.BR signal (7).
+.TP
+.B EMFILE
+The per-process limit on the number of open file descriptors has been reached.
+.TP
+.B ENFILE
+The system-wide limit on the total number of open files has been reached.
+.TP
+.B ENOSPC
+There was no room in the directory to add the new filename.
+.TP
+.B EROFS
+Read-only filesystem.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lbx lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.na
+.nh
+.BR tmpfile ()
+T}	Thread safety	MT-Safe
+.TE
+.SH VERSIONS
+The standard does not specify the directory that
+.BR tmpfile ()
+will use.
+glibc will try the path prefix
+.I P_tmpdir
+defined
+in
+.IR <stdio.h> ,
+and if that fails, then the directory
+.IR /tmp .
+.SH STANDARDS
+C11, POSIX.1-2008.
+.SH HISTORY
+POSIX.1-2001, C89, SVr4, 4.3BSD, SUSv2.
+.SH NOTES
+POSIX.1-2001 specifies:
+an error message may be written to
+.I stdout
+if the stream
+cannot be opened.
+.SH SEE ALSO
+.BR exit (3),
+.BR mkstemp (3),
+.BR mktemp (3),
+.BR tempnam (3),
+.BR tmpnam (3)