Call unit-command -1 <new> first time connected, close PR 569

2 files changed, 18 insertions, 9 deletions

diff --git a/sbin/slattach/slattach.8 b/sbin/slattach/slattach.8
index abccc1b59201..2642320b81bb 100644
--- a/sbin/slattach/slattach.8
+++ b/sbin/slattach/slattach.8
@@ -31,7 +31,7 @@
 .\"
 .\"     @(#)slattach.8	6.4 (Berkeley) 3/16/91
 .\"
-.\"	$Header: /home/ncvs/src/sbin/slattach/slattach.8,v 1.8 1995/10/26 05:13:54 nate Exp $
+.\"	$Header: /home/ncvs/src/sbin/slattach/slattach.8,v 1.9 1996/01/29 23:52:39 mpp Exp $
 .\"
 .Dd April 4, 1993
 .Dt SLATTACH 8
@@ -105,19 +105,27 @@ Specifies the speed of the connection. If not specified, the
 default of 9600 is used.
 .It Fl u Ar unit-command
 When the line is switched to slip discipline, run
-.Ql sh \-c Ar unit-command <last> <current>
+.Ql Nm "sh -c" Ar unit-command <old> <new>
 where
-.Ar <last>
+.Ar <old>
 and
-.Ar <current>
+.Ar <new>
 are the slip unit numbers when the line was
 last opened and the unit number of the current slip connection
 respectively.  The unit number can change after redialing if you are
 using more than one slip line.
+When
+.Nm slattach
+connected first time, it run
+.Ql Nm "sh -c" Ar unit-command Nm \-1 Ar <new> .
+When
+.Nm slattach
+disconnected, it run
+.Ql Nm "sh -c" Ar unit-command <old> Nm \-1 .
 .Nm Slattach
 will abort if the unit number
 changes and
-.Fl u Ar unit-command
+.Ql Fl u Ar \%unit-command
 was not specified.
 .It Fl z
 forces redial
@@ -240,7 +248,8 @@ process and can be examined by scripts in oder to send a signal to
 .Xr netintro 4 ,
 .Xr ifconfig 8 ,
 .Xr rc 8 ,
-.Xr uustat 1
+.Xr uustat 1 ,
+/usr/share/examples/slattach
 .Sh HISTORY
 The
 .Nm
diff --git a/sbin/slattach/slattach.c b/sbin/slattach/slattach.c
index aa70b11d97d6..a115f3e50ac6 100644
--- a/sbin/slattach/slattach.c
+++ b/sbin/slattach/slattach.c
@@ -424,9 +424,6 @@ void configure_network()
                 syslog(LOG_ERR, "ioctl(SLIOCGUNIT): %m");
                 exit_handler(1);
         }
-	/* don't compare unit numbers if this is the first time to attach. */
-	if (unit < 0)
-		unit = new_unit;
 	/* iff the unit number changes either invoke config_cmd or punt. */
 	if (config_cmd) {
 		char *s;
@@ -438,6 +435,9 @@ void configure_network()
 		free (s);
 		unit = new_unit;
 	} else {
+		/* don't compare unit numbers if this is the first time to attach. */
+		if (unit < 0)
+			unit = new_unit;
 		if (new_unit != unit) {
 			syslog(LOG_ERR, "slip unit changed from sl%d to sl%d, but no -u CMD was specified!");
 			exit_handler(1);