mkdtemp(3)                 Library Functions Manual                 mkdtemp(3)

NAME
       mkdtemp - create a unique temporary directory

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <stdlib.h>

       char *mkdtemp(char *template);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       mkdtemp():
           /* Since glibc 2.19: */ _DEFAULT_SOURCE
               || /* glibc 2.19 and earlier: */ _BSD_SOURCE
               || /* Since glibc 2.10: */ _POSIX_C_SOURCE >= 200809L

DESCRIPTION
       The mkdtemp() function generates a uniquely named temporary directory
       from template.  The last six characters of template must be XXXXXX and
       these are replaced with a string that makes the directory name unique.
       The directory is then created with permissions 0700.  Since it will be
       modified, template must not be a string constant, but should be
       declared as a character array.

RETURN VALUE
       The mkdtemp() function returns a pointer to the modified template
       string on success, and NULL on failure, in which case errno is set to
       indicate the error.

ERRORS
       EINVAL The last six characters of template were not XXXXXX.  Now
              template is unchanged.

       Also see mkdir(2) for other possible values for errno.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |mkdtemp ()                                  | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       POSIX.1-2008.

HISTORY
       glibc 2.1.91.  NetBSD 1.4.  POSIX.1-2008.

SEE ALSO
       mktemp(1), mkdir(2), mkstemp(3), mktemp(3), tempnam(3), tmpfile(3),
       tmpnam(3)

Linux man-pages 6.7               2023-10-31                        mkdtemp(3)