From f560e73702b1afd2d605ca96e52be0885f631b98 Mon Sep 17 00:00:00 2001
From: av <av@openbsd.org>
Date: Wed, 13 Aug 2008 12:21:19 +0000
Subject: [PATCH] Old drives (reported Giovanni Bechis <bigionews@snb.it>)
 don't report CD-RW write feature. Add additional check for media type before
 blanking. The patch fixes problem for Giovanni. ok fgsch

---
 usr.bin/cdio/cdio.c   |  5 +++--
 usr.bin/cdio/extern.h | 10 +++++++++-
 usr.bin/cdio/mmc.c    | 38 +++++++++++++++++++++++++++++++++++++-
 3 files changed, 49 insertions(+), 4 deletions(-)

diff --git a/usr.bin/cdio/cdio.c b/usr.bin/cdio/cdio.c
index cbf194afe42..a5d2a8900e9 100644
--- a/usr.bin/cdio/cdio.c
+++ b/usr.bin/cdio/cdio.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cdio.c,v 1.65 2008/08/08 07:26:40 fgsch Exp $	*/
+/*	$OpenBSD: cdio.c,v 1.66 2008/08/13 12:21:19 av Exp $	*/
 
 /*  Copyright (c) 1995 Serge V. Vakulenko
  * All rights reserved.
@@ -517,7 +517,8 @@ run(int cmd, char *arg)
 			warnx("Can't determine media type");
 			return (0);
 		}
-		if ((mediacap & MEDIACAP_CDRW_WRITE) == 0) {
+		if ((mediacap & MEDIACAP_CDRW_WRITE) == 0 &&
+		    get_media_type() != MEDIATYPE_CDRW) {
 			warnx("The media doesn't support blanking");
 			return (0);
 		}
diff --git a/usr.bin/cdio/extern.h b/usr.bin/cdio/extern.h
index 6a6a45b716b..fd26816c000 100644
--- a/usr.bin/cdio/extern.h
+++ b/usr.bin/cdio/extern.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: extern.h,v 1.12 2008/06/30 23:35:39 av Exp $ */
+/* $OpenBSD: extern.h,v 1.13 2008/08/13 12:21:19 av Exp $ */
 /*
  * Copyright (c) 2002 Marc Espie.
  *
@@ -60,12 +60,20 @@ SLIST_HEAD(track_head, track_info) tracks;
  */
 #define CD_MAX_SPEED		380
 
+/*
+ * Media types
+ */
+#define MEDIATYPE_UNKNOWN	0
+#define MEDIATYPE_CDR		1
+#define MEDIATYPE_CDRW		2
+
 extern unsigned long 	entry2time(struct cd_toc_entry *);
 extern unsigned long 	entry2frames(struct cd_toc_entry *);
 extern int              open_cd(char *, int);
 extern char ** 		cddb(const char *, int, struct cd_toc_entry *, char *);
 extern unsigned long 	cddb_discid(int, struct cd_toc_entry *);
 extern void		free_names(char **);
+extern int		get_media_type(void);
 extern int		get_media_capabilities(int *cap);
 extern int		blank(void);
 extern int		unit_ready(void);
diff --git a/usr.bin/cdio/mmc.c b/usr.bin/cdio/mmc.c
index 4b76e8e747a..df9b898970a 100644
--- a/usr.bin/cdio/mmc.c
+++ b/usr.bin/cdio/mmc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mmc.c,v 1.24 2008/08/08 07:26:40 fgsch Exp $	*/
+/*	$OpenBSD: mmc.c,v 1.25 2008/08/13 12:21:19 av Exp $	*/
 /*
  * Copyright (c) 2006 Michael Coulter <mjc@openbsd.org>
  *
@@ -39,6 +39,42 @@ extern char *cdname;
 #define MMC_FEATURE_CD_TAO		0x2d
 #define MMC_FEATURE_CDRW_WRITE		0x37
 
+int
+get_media_type(void)
+{
+	scsireq_t scr;
+	char buf[32];
+	u_char disctype;
+	int rv, error;
+
+	rv = MEDIATYPE_UNKNOWN;
+	memset(buf, 0, sizeof(buf));
+	memset(&scr, 0, sizeof(scr));
+
+	scr.cmd[0] = READ_TOC;
+	scr.cmd[1] = 0x2;	/* MSF */
+	scr.cmd[2] = 0x4;	/* ATIP */
+	scr.cmd[8] = 0x20;
+
+	scr.flags = SCCMD_ESCAPE | SCCMD_READ;
+	scr.databuf = buf;
+	scr.datalen = sizeof(buf);
+	scr.cmdlen = 10;
+	scr.timeout = 120000;
+	scr.senselen = SENSEBUFLEN;
+
+	error = ioctl(fd, SCIOCCOMMAND, &scr);
+	if (error != -1 && scr.retsts == 0 && scr.datalen_used > 7) {
+		disctype = (buf[6] >> 6) & 0x1;
+		if (disctype == 0)
+			rv = MEDIATYPE_CDR;
+		else if (disctype == 1)
+			rv = MEDIATYPE_CDRW;
+	}
+
+	return (rv);
+}
+
 int
 get_media_capabilities(int *cap)
 {
-- 
2.20.1