unmount(2)                                             unmount(2)



     NAME
          unmount - remove a file system

     SYNOPSIS
          unmount(name)
          char *name;

     DESCRIPTION
          unmount is used to unmount all non-System V file systems.
          umount is used to unmount System V file systems only (see
          umount(2)).

          unmount announces to the system that the directory name is
          no longer to refer to the root of a mounted file system.
          The directory name reverts to its ordinary interpretation.

     RETURN VALUE
          unmount returns 0 if the action occurred; -1 if if the
          directory is inaccessible or does not have a mounted file
          system, or if there are active files in the mounted file
          system.

     ERRORS
          unmount may fail with one of the following errors:

          [EINVAL]       The caller is not the superuser.

          [EINVAL]       name is not the root of a mounted file sys-
                         tem.

          [EBUSY]        A process is holding a reference to a file
                         located on the file system.

     SEE ALSO
          fsmount(2), mount(3), umount(2).

     BUGS
          The error codes are in a state of disarray; too many errors
          appear to the caller as one value.
















     April, 1990                                                     1