mkstemp(3c) [hpux man page]

mktemp(3C)																mktemp(3C)

NAME

       mktemp(), mkstemp() - make a unique file name

SYNOPSIS

   Remarks
       These  functions are provided solely for backward compatibility and importability of applications, and are not recommended for new applica-
       tions where portability is important.  For portable applications, use instead (see tmpfile(3S)).

DESCRIPTION

       replaces the contents of the string pointed to by template by a unique file name, and returns the address of template.  The string in  tem-
       plate  should  look like a file name with six trailing replaces each with a single byte character from the portable filename character set.
       The letter is chosen such that the resulting name does not duplicate the name of an existing file.

       makes the same replacement to the template, but also returns a file descriptor for the template file after opening the file for reading and
       writing.  thus prevents any possible race condition between testing whether the file exists and opening it for use.

RETURN VALUE

       returns	its  argument except when it runs out of letters or an underlying service fails, in which case the result is a pointer to an empty
       string

       returns an open file descriptor upon successful completion, or -1 if no suitable file could be created.

WARNINGS

       It is possible to run out of letters.

       and do not check to determine whether the file name part of template exceeds the maximum allowable file name length.

       Setting kernel tunable to values greater than 99999 can have an effect on formation of temporary filenames in and

       Formation of temporary filenames using process ids may not be supported in future versions of and

SEE ALSO

       getpid(2), open(2), tmpfile(3S), tmpnam(3S), thread_safety(5).

STANDARDS CONFORMANCE

																	mktemp(3C)

mkstemp(3C)						   Standard C Library Functions 					       mkstemp(3C)

NAME

       mkstemp, mkstemps, mkdtemp - make a unique file name from a template and open the file

SYNOPSIS

       #include <stdlib.h>

       int mkstemp(char *template);

       int mkstemps(char *template, int slen);

       char *mkdtemp(char *template);

DESCRIPTION

       The  mkstemp() function replaces the contents of the string pointed to by template by a unique file name, and returns a file descriptor for
       the file open for reading and writing. The function thus prevents any possible race condition between testing whether the file  exists  and
       opening	it for use. The string in template should look like a file name with six trailing 'X's; mkstemp() replaces each 'X' with a charac-
       ter from the portable file name character set. The characters are chosen such that the resulting name does not duplicate  the  name  of	an
       existing file.

       The  mkstemps()	function behaves the same as mkstemp(), except it permits a suffix to exist in the template. The template should be of the
       form /tmp/tmpXXXXXXsuffix. The slen parameter specifies the length of the suffix string.

       The mkdtemp() function makes the same replacement to the template as in mktemp(3C) and creates the template directory using mkdir(2), pass-
       ing a mode argument of 0700.

RETURN VALUES

       Upon successful completion, mkstemp() returns an open file descriptor. Otherwise -1 is returned if no suitable file could be created.

ERRORS

       The mkstemp(), mkstemps(), and mkdtemp() functions can set errno to the same values as lstat(2).

       The mkstemp() and mkstemps() functions can set errno to the same values as open(2).

       The mkdtemp() function can set errno to the same values as mkdir(2).

USAGE

       It is possible to run out of letters.

       The mkstemp() function does not check to determine whether the file name part of template exceeds the maximum allowable file name length.

       The tmpfile(3C) function is preferred over this function.

       The  mkstemp() function is frequently used to create a temporary file that will be removed by the application before the application termi-
       nates.

       The mkstemp() function has a transitional interface for 64-bit file offsets. See lf64(5).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |ATTRIBUTE TYPE		     |ATTRIBUTE VALUE		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |See below.		   |
       +-----------------------------+-----------------------------+

       The mkstemp() function is Standard. The mkstemps() and mkdtemp() functions are Stable.

SEE ALSO

       getpid(2), lstat(2), mkdir(2), open(2), tmpfile(3C), mktemp(3C), attributes(5), lf64(5), standards(5)

SunOS 5.11							    22 Feb 2006 						       mkstemp(3C)