Document effect of login class capabilities.

svn path=/head/; revision=21647

usr.bin/su/su.1

@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"	@(#)su.1	8.2 (Berkeley) 4/18/94
-.\"	$Id$
+.\"	$Id: su.1,v 1.3 1996/08/29 18:06:13 wosch Exp $
 .\"
 .\" this is for hilit19's braindeadness: "
 .Dd April 18, 1994
@@ -77,6 +77,10 @@ in which case it is unmodified.
 The invoked shell is the target login's.
 This is the traditional behavior of
 .Nm su .
+Resource limits and session priority applicable to the original user's
+login class (See
+.Xr login.conf 5 )
+are also normally retained unless the target login as a user ID of 0.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds
@@ -108,9 +112,13 @@ is set to
 .Dq Pa /bin:/usr/bin .
 .Ev TERM
 is imported from your current environment.
+Envronment variables may be set or overridden from the login class
+capabilities database according to the class of the target login.
 The invoked shell is the target login's, and
 .Nm su
 will change directory to the target login's home directory.
+Resource limits and session priority are modified to that for the
+target account's login class.
 .It Fl m
 Leave the environment unmodified.
 The invoked shell is your login shell, and no directory changes are made.
@@ -159,6 +167,7 @@ to remind one of its awesome power.
 .Xr kinit 1 ,
 .Xr kerberos 1 ,
 .Xr passwd 5 ,
+.Xr login.conf 5 ,
 .Xr group 5 ,
 .Xr environ 7
 .Sh ENVIRONMENT