mkdirat — create a directory relative to a directory file descriptor
#define _ATFILE_SOURCE #include <sys/stat.h>
int
mkdirat( |
int | dirfd, |
const char * | pathname, | |
mode_t | mode) ; |
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.
On success, mkdirat
()
returns 0. On error, −1 is returned and errno
is set to indicate the error.
The same errors that occur for mkdir(2) can also occur for
mkdirat
(). The following
additional errors can occur for mkdirat
():
dirfd
is not
a valid file descriptor.
pathname
is
relative and dirfd
is a file
descriptor referring to a file other than a
directory.
This system call is non-standard but is proposed for inclusion in a future revision of POSIX.1.
mkdir(2), openat(2), path_resolution(7)
|