Union with underlying filesystem instead of obscuring it.
.It Dv MNT_SYNCHRONOUS
All I/O to the filesystem should be done synchronously.
+.It Dv MNT_CPROTECT
+Enable data protection on the filesystem if the filesystem is configured for it.
.El
.Pp
The flag
manual page for each filesystem.
.Pp
The
-.Fn umount
+.Fn unmount
function call disassociates the filesystem from the specified
mount point
.Fa dir .
.Va errno
is set to indicate the error.
.Pp
-.Nm Umount
-returns the value 0 if the umount succeeded; otherwise -1 is returned
+.Nm unmount
+returns the value 0 if the unmount succeeded; otherwise -1 is returned
and the variable
.Va errno
is set to indicate the error.
points outside the process's allocated address space.
.El
.Pp
-.Nm Umount
+.Nm unmount
may fail with one of the following errors:
.Bl -tag -width [ENAMETOOLONG]
.It Bq Er EPERM
.El
.Sh SEE ALSO
.Xr mount 8 ,
-.Xr umount 8
+.Xr unmount 8
.Sh BUGS
Some of the error codes need translation to more obvious messages.
.Sh HISTORY
.Fn Mount
and
-.Fn umount
+.Fn unmount
function calls appeared in
.At v6 .