Add 'df' string to gettytab - the strftime(3) format for %d

in the banner messages (of course, defaults to "%+").

Submitted by:	Gleb Smirnoff <glebius@tak.estra.ru>

libexec/getty/gettytab.5

@@ -93,6 +93,7 @@ after login prompt
 .It "ct	num	10	chat timeout for ac/ic scripts"
 .It "dc	num	0	chat debug bitmask"
 .It "de	num	0	delay secs and flush input before writing first prompt"
+.It "df	str	%+	the" Xr strftime 3 "format used for \&%d in the banner message"
 .It "ds	str" Ta So Li ^Y Sc Ta
 .No "delayed suspend character"
 .It "dx	bool	false	set"
@@ -282,11 +283,11 @@ is running.
 .Pp
 .Bl -tag -offset indent -width \&%xxxxxxxxxxxxxx
 .It \&%d
-The current date and time in the locale's representation as of the
+The current date and time formatted according to the
 .Em \&Lo
-string
-(the \&%+ format of
-.Xr strftime 3 ) .
+and
+.Em \&df
+strings.
 .It \&%h
 The hostname of the machine, which is normally obtained from the
 system using

libexec/getty/gettytab.h

@@ -91,6 +91,7 @@ struct gettyflags {
 #define IC	gettystrs[27].value
 #define AC	gettystrs[28].value
 #define AL	gettystrs[29].value
+#define DF	gettystrs[30].value
 
 /*
  * Numeric definitions.

libexec/getty/init.c

@@ -52,6 +52,7 @@ static const char rcsid[] =
 static char loginmsg[] = "login: ";
 static char nullstr[] = "";
 static char loginprg[] = _PATH_LOGIN;
+static char datefmt[] = "%+";
 
 struct	gettystrs gettystrs[] = {
 	{ "nx" },			/* next table */
@@ -84,6 +85,7 @@ struct	gettystrs gettystrs[] = {
 	{ "ic" },			/* modem init-chat */
 	{ "ac" },			/* modem answer-chat */
 	{ "al" },			/* user to auto-login */
+	{ "df", datefmt},		/* format for strftime() */
 	{ 0 }
 };
 

libexec/getty/main.c

@@ -770,7 +770,7 @@ putf(cp)
 			(void)time(&t);
 			if (Lo)
 				(void)setlocale(LC_TIME, Lo);
-			(void)strftime(db, sizeof(db), "%+", localtime(&t));
+			(void)strftime(db, sizeof(db), DF, localtime(&t));
 			puts(db);
 			break;