5857 add -o option to lofiadm

@@ -7,11 +7,11 @@
 
 SYNOPSIS
        lofiadm [-r] -a file [device]
 
 
-       lofiadm [-r] -c crypto_algorithm -a file [device]
+       lofiadm [-r] [-o] -c crypto_algorithm -a file [device]
 
 
        lofiadm [-r] -c crypto_algorithm -k raw_key_file -a file [device]
 
 

@@ -94,10 +94,16 @@
 
            Remove an association by file or device name, if the associated
            block device is not busy, and deallocates the block device.
 
 
+       -o
+
+           If the -o option is specified lofiadm will prompt for a passphrase
+           once.
+
+
        -r
 
            If the -r option is specified before the -a option, the device will
            be opened read-only.