svn commit: r323992 - stable/11/libexec/getty

[David Bright]

Author: dab
Date: Mon Sep 25 20:04:14 2017
New Revision: 323992
URL: https://svnweb.freebsd.org/changeset/base/323992

Log:
  MFC r323252:
  
  Add a new getty/gettytab capability to generate an initial message dynamically.
  
  This modification adds a new gettytab(5) option (iM) to specify a
  program to run that will generate the initial (banner) message that is
  displayed before the login prompt. Such a capability is useful when
  dynamic information is needed in the banner message that cannot be
  supplied by the set of % substitution sequences available in the "im"
  option.
  
  Sponsored by:	Dell EMC

Modified:
  stable/11/libexec/getty/gettytab.5
  stable/11/libexec/getty/gettytab.h
  stable/11/libexec/getty/init.c
  stable/11/libexec/getty/main.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/libexec/getty/gettytab.5
==============================================================================
--- stable/11/libexec/getty/gettytab.5	Mon Sep 25 19:49:56 2017	(r323991)
+++ stable/11/libexec/getty/gettytab.5	Mon Sep 25 20:04:14 2017	(r323992)
@@ -28,7 +28,7 @@
 .\"     from: @(#)gettytab.5	8.4 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\" "
-.Dd February 2, 2017
+.Dd August 23, 2017
 .Dt GETTYTAB 5
 .Os
 .Sh NAME
@@ -130,6 +130,8 @@ hangup line on last close
 .It "ig	bool	false	ignore garbage characters in login name"
 .It "im	str" Ta Dv NULL
 .Ta No "initial (banner) message"
+.It "iM	str" Ta Dv NULL
+.Ta No "execute named file to generate initial (banner) message"
 .It "in	str" Ta So Li ^C
 .Sc Ta No "interrupt character"
 .It "is	num	unused	input speed"
@@ -146,7 +148,7 @@ hangup line on last close
 .It "mb	bool	false	do flow control based on carrier"
 .It "nc	bool	false	terminal does not supply carrier (set clocal)"
 .It "nl	bool	false	terminal has (or might have) a newline character"
-.It "np	bool	false	terminal uses no parity (i.e. 8-bit characters)"
+.It "np	bool	false	terminal uses no parity (i.e., 8-bit characters)"
 .It "nx	str	default	next table (for auto speed selection)"
 .It "o0	num	unused	tty output flags to write messages"
 .It "o1	num	unused	tty output flags to read login name"

Modified: stable/11/libexec/getty/gettytab.h
==============================================================================
--- stable/11/libexec/getty/gettytab.h	Mon Sep 25 19:49:56 2017	(r323991)
+++ stable/11/libexec/getty/gettytab.h	Mon Sep 25 20:04:14 2017	(r323992)
@@ -88,6 +88,7 @@ struct gettyflags {
 #define AC	gettystrs[28].value
 #define AL	gettystrs[29].value
 #define DF	gettystrs[30].value
+#define IMP	gettystrs[31].value
 
 /*
  * Numeric definitions.

Modified: stable/11/libexec/getty/init.c
==============================================================================
--- stable/11/libexec/getty/init.c	Mon Sep 25 19:49:56 2017	(r323991)
+++ stable/11/libexec/getty/init.c	Mon Sep 25 20:04:14 2017	(r323992)
@@ -82,6 +82,7 @@ struct	gettystrs gettystrs[] = {
 	{ "ac" },			/* modem answer-chat */
 	{ "al" },			/* user to auto-login */
 	{ "df", datefmt},		/* format for strftime() */
+	{ "iM" },			/* initial message program */
 	{ 0 }
 };
 

Modified: stable/11/libexec/getty/main.c
==============================================================================
--- stable/11/libexec/getty/main.c	Mon Sep 25 19:49:56 2017	(r323991)
+++ stable/11/libexec/getty/main.c	Mon Sep 25 20:04:14 2017	(r323992)
@@ -324,6 +324,8 @@ main(int argc, char *argv[])
 		}
 		first_time = 0;
 
+		if (IMP && *IMP && !(PL && PP))
+			system(IMP);
 		if (IM && *IM && !(PL && PP))
 			putf(IM);
 		if (setjmp(timeout)) {