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mkdtemp(3) [minix man page]

MKDTEMP(3)						     Linux Programmer's Manual							MKDTEMP(3)

NAME
mkdtemp - create a unique temporary directory 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 appro- priately. 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. VERSIONS
Available since glibc 2.1.91. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +----------+---------------+---------+ |Interface | Attribute | Value | +----------+---------------+---------+ |mkdtemp() | Thread safety | MT-Safe | +----------+---------------+---------+ CONFORMING TO
POSIX.1-2008. This function is present on the BSDs. SEE ALSO
mktemp(1), mkdir(2), mkstemp(3), mktemp(3), tempnam(3), tmpfile(3), tmpnam(3) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2016-07-17 MKDTEMP(3)

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MKTEMP(3)						     Linux Programmer's Manual							 MKTEMP(3)

NAME
mktemp - make a unique temporary filename SYNOPSIS
#include <stdlib.h> char *mktemp(char *template); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): mktemp(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 DESCRIPTION
The mktemp() function generates a unique temporary filename from template. The last six characters of template must be XXXXXX and these are replaced with a string that makes the filename unique. Since it will be modified, template must not be a string constant, but should be declared as a character array. RETURN VALUE
The mktemp() function always returns template. If a unique name was created, the last six bytes of template will have been modified in such a way that the resulting name is unique (i.e., does not exist already) If a unique name could not be created, template is made an empty string. ERRORS
EINVAL The last six characters of template were not XXXXXX. CONFORMING TO
4.3BSD, POSIX.1-2001. POSIX.1-2008 removes the specification of mktemp(). NOTES
The prototype is in <unistd.h> for libc4, libc5, glibc1; glibc2 follows the Single Unix Specification and has the prototype in <stdlib.h>. BUGS
Never use mktemp(). Some implementations follow 4.3BSD and replace XXXXXX by the current process ID and a single letter, so that at most 26 different names can be returned. Since on the one hand the names are easy to guess, and on the other hand there is a race between test- ing whether the name exists and opening the file, every use of mktemp() is a security risk. The race is avoided by mkstemp(3). SEE ALSO
mkstemp(3), tempnam(3), tmpfile(3), tmpnam(3) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2008-08-06 MKTEMP(3)
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