MKDIR(2)                 DOMAIN/IX SYS5                  MKDIR(2)



NAME
     mkdir - make a directory file

USAGE
     mkdir(path, mode)
     char *path;
     int mode;


DESCRIPTION
     Mkdir creates a new directory file with the name path.  Mode
     sets the new directory's mode.  (The protection part of the
     mode is modified by the process's mode 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 that of the
     parent directory in which it is created.

     The low-order 9 bits of mode are modified by the process's
     file mode creation mask; all bits set in the process's file
     mode creation mask are cleared.  See umask(2).

NOTES
     The DOMAIN System's single level store architecture requires
     that all filesystem objects be readable in order to be writ-
     able or executable.  Since write-only or execute-only files
     would be unusable in DOMAIN/IX, modes that specify 02
     (write-only) or 01 (execute-only) are ORed with 0400 to
     force read permission.  This applies to the owner, group,
     and world portions of the mode word.  For example, if mode
     0631 were specified, the mode applied to the file would
     actually be 0675.

RETURN VALUE
     A successful call returns zero.  A failed call returns -1
     and sets errno as indicated below.

ERRORS
     Mkdir will fail and no directory will be created if:

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

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

     [ENOENT]  A component of the path prefix does not exist.

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

     [EEXIST]  The named file already exists.



Printed 12/4/86                                           MKDIR-1

MKDIR(2)                 DOMAIN/IX SYS5                  MKDIR(2)



     [EFAULT]  Path points outside the process's allocated
               address space.

     [ELOOP]   The call encountered too many symbolic links in
               translating the pathname.

     [EIO]     An I/O error occurred while the call was writing
               to the file system.

RELATED INFORMATION
     chmod(2), stat(2), umask(2)










































MKDIR-2                                           Printed 12/4/86