-The currently supported types of file systems and
-their type specific data are:
-.IP MOUNT_UFS 6
-.nf
-.ta \w'struct 'u +\w'nfsv2fh_t 'u +\w'sockaddr_in *addr 'u
-struct ufs_args {
- char *fspec; /* Block special file to mount */
- int exflags; /* export related flags */
- uid_t exroot; /* mapping for root uid */
-};
-.fi
-.sp
-.IP MOUNT_NFS 6
-.nf
-struct nfs_args {
- struct sockaddr_in *addr; /* file server address */
- nfsv2fh_t *fh; /* File handle to be mounted */
- int flags; /* flags */
- int wsize; /* write size in bytes */
- int rsize; /* read size in bytes */
- int timeo; /* initial timeout in 0.1 secs */
- int retrans; /* times to retry send */
- char *hostname; /* server's name */
-};
-.fi
-.IP MOUNT_MFS 6
-.nf
-struct mfs_args {
- char *name; /* name of backing process */
- caddr_t base; /* base address of the file system */
- u_long size; /* size of the file system */
-};
-.fi
-.sp
-.PP
-.I Umount
-announces to the system that the file system mounted at
-.I dir
-is no longer to contain that file system.
-The associated directory reverts to its ordinary interpretation.
-.PP
+The format for these argument structures is described in the
+manual page for each filesystem.
+By convention filesystem manual pages are named
+by prefixing ``mount_'' to the name of the filesystem as returned by
+.Xr sysctl 8 .
+Thus the
+.Nm NFS
+filesystem is described by the
+.Xr mount_nfs 8
+manual page.
+.Pp
+The
+.Fn umount
+function call disassociates the filesystem from the specified
+mount point
+.Fa dir .
+.Pp