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MKDIRAT(2)                 Linux Programmer's Manual                MKDIRAT(2)



NAME
       mkdirat - create a directory relative to a directory file descriptor

SYNOPSIS
       #define _ATFILE_SOURCE
       #include <fcntl.h> /* Definition of AT_* constants */
       #include <sys/stat.h>

       int mkdirat(int dirfd, const char *pathname, mode_t mode);

DESCRIPTION
       The mkdirat() system call operates in exactly the same way as mkdir(2), except for the differences described in
       this manual page.

       If the pathname given in pathname is relative, then it is interpreted relative to the directory referred to  by
       the  file descriptor dirfd (rather than relative to the current working directory of the calling process, as is
       done by mkdir(2) for a relative pathname).

       If pathname is relative and dirfd is the special value AT_FDCWD, then pathname is interpreted relative  to  the
       current working directory of the calling process (like mkdir(2)).

       If pathname is absolute, then dirfd is ignored.

RETURN VALUE
       On success, mkdirat() returns 0.  On error, -1 is returned and errno is set to indicate the error.

ERRORS
       The  same  errors  that  occur  for mkdir(2) can also occur for mkdirat().  The following additional errors can
       occur for mkdirat():

       EBADF  dirfd is not a valid file descriptor.

       ENOTDIR
              pathname is relative and dirfd is a file descriptor referring to a file other than a directory.

VERSIONS
       mkdirat() was added to Linux in kernel 2.6.16.

CONFORMING TO
       POSIX.1-2008.

NOTES
       See openat(2) for an explanation of the need for mkdirat().

SEE ALSO
       mkdir(2), openat(2), path_resolution(7)

COLOPHON
       This page is part of release 3.22 of the Linux man-pages project.  A description of the project,  and  informa-
       tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



Linux                             2008-08-21                        MKDIRAT(2)