Manual page for mkdir(2)
mkdir - make a directory
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
int mkdir(const char *path,
mode_t mode);
MT-LEVEL
Async-Signal-Safe
DESCRIPTION
mkdir()
creates a
new directory named by the path name pointed to by
path.
The mode of the new
directory is
initialized from
mode
(see
chmod.2
for values of mode).
The protection part of the
mode
argument is modified by the
process's file creation mask
(see
umask.2
The directory's owner
ID
is set to
the process's effective user
ID.
The directory's group
ID
is set to the
process's effective group ID, or if the S_ISGID bit is
set in the parent directory, then the group
ID
of the directory is inherited
from the parent. The S_ISGID bit of the new directory is
inherited from the parent directory.
If path is a symbolic link, it is not followed.
The newly created directory is empty
with the exception
of entries for itself (.)
and its parent directory (..).
Upon successful completion,
mkdir()
marks for update the st_atime,
st_ctime and st_mtime fields of the directory. Also, the
st_ctime and st_mtime fields of the directory that contains the
new entry are marked for update.
RETURN VALUES
Upon successful completion, a value of 0 is returned.
Otherwise, a value of -1 is returned, and
errno
is set to indicate the error.
ERRORS
mkdir()
fails and creates no directory if one or more of the following
are true:
- EACCES
-
Either a component of the path prefix denies search permission
or write permission is denied on the parent directory of the directory
to be created.
- EDQUOT
-
The directory where the new file entry is being placed
cannot be extended because the user's quota of disk blocks
on that file system has been exhausted.
The new directory cannot be created because the user's
quota of disk blocks on that file system has been exhausted.
The user's quota of inodes on the file system where
the file is being created has been exhausted.
- EEXIST
-
The named file
already exists.
- EFAULT
-
path
points to an illegal address.
- EIO
-
An I/O error has occurred while accessing the file system.
- ELOOP
-
Too many symbolic links were encountered in translating path.
- EMLINK
-
The maximum number of links to the parent directory would be exceeded.
- EMULTIHOP
-
Components of path require hopping to multiple
remote machines
and the file system type does not allow it.
- ENAMETOOLONG
-
The length of the path argument exceeds {PATH_MAX}, or the
length of a path component exceeds {NAME_MAX} while
{_POSIX_NO_TRUNC} is in effect.
- ENOENT
-
A component of the
path prefix
does not exist or is a null pathname.
- ENOLINK
-
path
points to a remote machine and the link to that
machine is no longer active.
- ENOSPC
-
No free space is available on the device containing the directory.
- ENOTDIR
-
A component of
the
path prefix
is not a directory.
- EROFS
-
The path prefix resides
on a read-only file system.
SEE ALSO
chmod.2
mknod.2
umask.2
stat.5
Created by unroff & hp-tools.
© by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97
