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

NAME
       mkdirat - create a directory relative to a directory file descriptor
SYNOPSIS
       #include <fcntl.h> /* Definition of AT_* constants */
       #include <sys/stat.h>
       int mkdirat(int dirfd, const char *pathname, mode_t mode);
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       mkdirat():
           Since glibc 2.10:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _ATFILE_SOURCE
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;  library  support  was
       added to glibc in version 2.4.
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 3.53 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/.

Linux                             2012-05-04                        MKDIRAT(2)