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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "TEMPNAM" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" tempnam 
+.SH NAME
+tempnam \- create a name for a temporary file
+.SH SYNOPSIS
+.LP
+\fB#include <stdio.h>
+.br
+.sp
+char *tempnam(const char *\fP\fIdir\fP\fB, const char *\fP\fIpfx\fP\fB);
+\fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fItempnam\fP() function shall generate a pathname that may be
+used for a temporary file.
+.LP
+The \fItempnam\fP() function allows the user to control the choice
+of a directory. The \fIdir\fP argument points to the name
+of the directory in which the file is to be created. If \fIdir\fP
+is a null pointer or points to a string which is not a name for
+an appropriate directory, the path prefix defined as P_tmpdir in the
+\fI<stdio.h>\fP
+header shall be used. If that directory is not accessible, an implementation-defined
+directory may be used.
+.LP
+Many applications prefer their temporary files to have certain initial
+letter sequences in their names. The \fIpfx\fP argument
+should be used for this. This argument may be a null pointer or point
+to a string of up to five bytes to be used as the beginning
+of the filename.
+.LP
+Some implementations of \fItempnam\fP() may use \fItmpnam\fP() internally.
+On such
+implementations, if called more than {TMP_MAX} times in a single process,
+the behavior is implementation-defined.
+.SH RETURN VALUE
+.LP
+Upon successful completion, \fItempnam\fP() shall allocate space for
+a string, put the generated pathname in that space, and
+return a pointer to it. The pointer shall be suitable for use in a
+subsequent call to \fIfree\fP(). Otherwise, it shall return a null
+pointer and set \fIerrno\fP to indicate the
+error.
+.SH ERRORS
+.LP
+The \fItempnam\fP() function shall fail if:
+.TP 7
+.B ENOMEM
+Insufficient storage space is available.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.SS Generating a Pathname
+.LP
+The following example generates a pathname for a temporary file in
+directory \fB/tmp\fP, with the prefix \fIfile\fP. After the
+filename has been created, the call to \fIfree\fP() deallocates the
+space used to store the
+filename.
+.sp
+.RS
+.nf
+
+\fB#include <stdio.h>
+#include <stdlib.h>
+\&...
+char *directory = "/tmp";
+char *fileprefix = "file";
+char *file;
+.sp
+
+file = tempnam(directory, fileprefix);
+free(file);
+\fP
+.fi
+.RE
+.SH APPLICATION USAGE
+.LP
+This function only creates pathnames. It is the application's responsibility
+to create and remove the files. Between the time a
+pathname is created and the file is opened, it is possible for some
+other process to create a file with the same name. Applications
+may find \fItmpfile\fP() more useful.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIfopen\fP() , \fIfree\fP() , \fIopen\fP() , \fItmpfile\fP() , \fItmpnam\fP()
+, \fIunlink\fP() ,
+the Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<stdio.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .