MKDIR(2) INTERACTIVE UNIX System MKDIR(2)
NAME
mkdir - make a directory
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
int mkdir (path, mode)
char *path;
int mode;
DESCRIPTION
The routine mkdir creates a new directory with the name
path. The argument mode specifies the initial mode of the
new directory. The protection bits of the argument mode are
modified by the process file mode creation mask [see
umask(2)]. The value of the argument mode should be the
logical OR of the values of the desired permissions:
Name Description
S_IREAD Read by owner
S_IWRITE Write by owner
S_IEXEC Execute (search) by owner
S_IRGRP Read by group
S_IWGRP Write by group
S_IXGRP Execute (search) by group
S_IROTH Read by others (i.e., anyone else)
S_IWOTH Write by others
S_IXOTH Execute (search) by others
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. The newly created directory is empty
with the possible exception of entries for "." and "..".
mkdir will fail and no directory will be created if one or
more of the following is true:
[ENOTDIR] A component of the path prefix is not a
directory.
[ENOENT] A component of the path prefix does not
exist.
[ENOLINK] Path points to a remote machine and the link
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MKDIR(2) INTERACTIVE UNIX System MKDIR(2)
to that machine is no longer active.
[EMULTIHOP] Components of path require hopping to multi-
ple remote machines.
[EACCES] Either a component of the path prefix denies
search permission, or write permission is
denied on the parent directory of the direc-
tory to be created.
[ENOENT] The path is longer than the maximum allowed.
[EEXIST] The named file already exists.
[EROFS] The path prefix resides on a read-only file
system.
[EFAULT] Path points outside the allocated address
space of the process.
[EMLINK] The maximum number of links to the parent
directory would be exceeded.
[EIO] An I/O error has occurred while accessing the
file system.
DIAGNOSTICS
Upon successful completion, a value of 0 is returned. Oth-
erwise, a value of -1 is returned, and errno is set to indi-
cate the error.
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