MKDIR(2)                             BSD                              MKDIR(2)



NAME
     mkdir - make a directory file

SYNOPSIS
     #include <sys/stat.h>
     #include <sys/types.h>

     int mkdir(path, mode)
     const char *path;
     mode_t mode;

DESCRIPTION
     mkdir creates a new directory file with name path.  The mode of the new
     file is initialized from mode.  (The protection part of the mode is
     modified by the process' mode mask; see umask(2)).

     The directory's owner ID is set to the process' effective user ID.  The
     directory's group ID is set to that of the parent directory in which it
     is created.

     The low-order nine bits of mode are modified by the process' file mode
     creation mask: all bits set in the process' file mode creation mask are
     cleared. See umask(2).

ERRORS
     mkdir will fail and no directory will be created if any of the following
     occur:

     [ENOTDIR]        A component of the path prefix is not a directory.

     [ENAMETOOLONG]   A component of a pathname exceeded 255 characters, or an
                      entire pathname exceeded 1023 characters.

     [ENOENT]         A component of the path prefix does not exist or path
                      points to an empty string.

     [EACCES]         Search permission is denied for a component of the path
                      prefix.

     [ELOOP]          Too many symbolic links were encountered in translating
                      the pathname.

     [EROFS]          The named file resides on a read-only file system.

     [EEXIST]         The named file already exists.

     [ENOSPC]         The directory in which the entry for the new directory
                      is being placed cannot be extended because there is no
                      space left on the file system containing the directory.

     [ENOSPC]         The new directory cannot be created because there there
                      is no space left on the file system that will contain
                      the directory.

     [ENOSPC]         There are no free inodes on the file system on which the
                      directory is being created.

     [EIO]            An I/O error occurred while making the directory entry
                      or allocating the inode.

     [EIO]            An I/O error occurred while reading from or writing to

                      the file system.

     [EDQUOT]         The directory in which the entry for the new directory
                      is being placed cannot be extended because the user's
                      quota of disk blocks on the file system containing the
                      directory has been exhausted.

     [EDQUOT]         The new directory cannot be created because the user's
                      quota of disk blocks on the file system that will
                      contain the directory has been exhausted.

SEE ALSO
     chmod(2), stat(2), umask(2)

DIAGNOSTICS
     A successful call returns 0.  A failed call returns -1 and sets errno to
     indicate the error.

NOTES
     The following errors, not returned by Domain/OS BSD, may be returned
     under other implementations:

     [EINVAL]         The pathname contains a character with the high-order
                      bit set.

     [EPERM]          The path argument contains a byte with the high-order
                      bit set.  "