UNMOUNT(2-BSD)      RISC/os Reference Manual       UNMOUNT(2-BSD)



NAME
     unmount - remove a file system

SYNOPSIS
     unmount(name)
     char *name;

DESCRIPTION
     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:

     EPERM     The caller is not the super-user.

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

     EINVAL    name is not the root of a mounted file system.

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

     EINVAL    The path name contains a character with the high-
               order bit set.

     ENAMETOOLONG
               The length of a component of the path name exceeds
               255 characters, or the length of the entire path
               name exceeds 1023 characters.

     ENOENT    name does not exist.

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

     EFAULT    name points outside the process's allocated
               address space.

     ELOOP     Too many symbolic links were encountered in
               translating the path name.

     EIO       An I/O error occurred while reading from or writ-
               ing to the file system.



                        Printed 11/19/92                   Page 1

UNMOUNT(2-BSD)      RISC/os Reference Manual       UNMOUNT(2-BSD)



SEE ALSO
     mount(2).
     mount(1M) in the System Administrator's Reference Manual.

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
















































 Page 2                 Printed 11/19/92