From bb44f0089b0ec7a2e9109f9d299ab52a39c78f86 Mon Sep 17 00:00:00 2001
From: Josef Karthauser <joe@FreeBSD.org>
Date: Tue, 16 Jan 2001 20:31:53 +0000
Subject: [PATCH] Deprecate the use of the CD_DRIVE, CDPLAY, DISC and MUSIC_CD
 environment variables in favour of CDROM.

Discussed on:	stable@FreeBSD.org
---
 usr.sbin/cdcontrol/cdcontrol.1 | 12 ++++--------
 usr.sbin/cdcontrol/cdcontrol.c | 20 ++++++++++++++++----
 2 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/usr.sbin/cdcontrol/cdcontrol.1 b/usr.sbin/cdcontrol/cdcontrol.1
index 71c4ebfe156..0b1022b1632 100644
--- a/usr.sbin/cdcontrol/cdcontrol.1
+++ b/usr.sbin/cdcontrol/cdcontrol.1
@@ -20,14 +20,7 @@ as
 or
 .Pa mcd0 . 
 .Pp
-If the device not specified, the environment variables 
-.Ev MUSIC_CD ,
-.Ev CD_DRIVE ,
-.Ev DISC
-and
-.Ev CDPLAY
-will be used (in this order) to find the cd device.
-.Pp
+
 If no command is given, then
 .Nm
 enters an interactive mode, reading commands from the standard input.
@@ -157,6 +150,9 @@ The following environment variables affect the execution of
 The cd device to use if one isn't specified with the
 .Fl f
 flag.
+.It Ev CD_DRIVE Ev CDPLAY Ev DISC Ev MUSIC_CD
+These variables have been deprecated in favour of
+.Ev CDROM .
 .El
 .Sh FILES
 .Bl -tag -width /dev/mcd0c -compact
diff --git a/usr.sbin/cdcontrol/cdcontrol.c b/usr.sbin/cdcontrol/cdcontrol.c
index 7af88374e04..c22bad333dd 100644
--- a/usr.sbin/cdcontrol/cdcontrol.c
+++ b/usr.sbin/cdcontrol/cdcontrol.c
@@ -159,18 +159,30 @@ void usage ()
 	exit (1);
 }
 
+char *use_cdrom_instead(char *old_envvar)
+{
+	char *device;
+
+	device = getenv(old_envvar);
+	if (device)
+		warnx("%s environment variable deprecated, "
+		    "please use CDROM in the future.", old_envvar);
+	return device;
+}
+
+
 int main (int argc, char **argv)
 {
 	int cmd;
 	char *arg;
 
-	cdname = getenv ("MUSIC_CD");
+	cdname = use_cdrom_instead("MUSIC_CD");
 	if (! cdname)
-		cdname = getenv ("CD_DRIVE");
+		cdname = use_cdrom_instead("CD_DRIVE");
 	if (! cdname)
-		cdname = getenv ("DISC");
+		cdname = use_cdrom_instead("DISC");
 	if (! cdname)
-		cdname = getenv ("CDPLAY");
+		cdname = use_cdrom_instead("CDPLAY");
 
 	for (;;) {
 		switch (getopt (argc, argv, "svhf:")) {