mkdtemp - create a unique temporary directory
Contents
Attributes
For an explanation of the terms used in this section, see attributes(7).
┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
│ mkdtemp() │ Thread safety │ MT-Safe │
└─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘
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.
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.
History
glibc 2.1.91. NetBSD 1.4. POSIX.1-2008.
Library
Standard C library (libc, -lc)
Name
mkdtemp - create a unique temporary directory
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.
See Also
mktemp(1), mkdir(2), mkstemp(3), mktemp(3), tempnam(3), tmpfile(3), tmpnam(3) Linux man-pages 6.9.1 2024-05-02 mkdtemp(3)
Standards
POSIX.1-2008.
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
