--- linux-2.6.8.1/drivers/block/scsi_ioctl.c	2004-08-16 21:44:53.000000000 +0200
+++ linux/drivers/block/scsi_ioctl.c	2004-08-17 00:53:12.000000000 +0200
@@ -156,6 +156,35 @@
 		safe_for_write(WRITE_16),
 		safe_for_write(WRITE_BUFFER),
 		safe_for_write(WRITE_LONG),
+
+                /* Some defs for recording CDs */
+
+                /* obsolete: 0x01 REZERO_UNIT, 0x5c READ_BUFFER */
+		/*           used by k3b, but also work without */
+
+
+                safe_for_read(GPCMD_GET_CONFIGURATION),
+                safe_for_read(GPCMD_MODE_SELECT_10), /* read needed by k3b */
+                safe_for_read(GPCMD_SET_SPEED), /* obsolete but often used */
+                safe_for_read(GPCMD_LOAD_UNLOAD),
+
+                safe_for_write(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL),
+                safe_for_write(GPCMD_FLUSH_CACHE),
+                safe_for_write(GPCMD_CLOSE_TRACK),
+                safe_for_write(GPCMD_FORMAT_UNIT),
+                safe_for_write(GPCMD_BLANK),
+                safe_for_write(GPCMD_READ_FORMAT_CAPACITIES),
+                safe_for_write(GPCMD_RESERVE_RZONE_TRACK),
+                safe_for_write(GPCMD_SEND_KEY),
+                safe_for_write(GPCMD_SEND_OPC),
+                safe_for_write(GPCMD_SET_STREAMING),
+
+                /* possibly needed: 0x5d SEND_CUE_SHEET/SEND_EVENT*/
+                /*                  0xbf SEND_DVD_STRUCTURE */
+                /* but not defined yet in linux/cdrom.h */
+
+                safe_for_write(0x5d),
+                safe_for_write(0xbf),
 	};
 	unsigned char type = cmd_type[cmd[0]];
 
@@ -173,6 +202,14 @@
 	if (capable(CAP_SYS_RAWIO))
 		return 0;
 
+        /* Added for debugging*/
+       
+	if(file->f_mode & FMODE_WRITE)
+	  printk(KERN_WARNING "SCSI-CMD Filter: 0x%x not allowed with write-mode\n",cmd[0]);
+        else
+          printk(KERN_WARNING "SCSI-CMD Filter: 0x%x not allowed with read-mode\n",cmd[0]);
+
+
 	/* Otherwise fail it with an "Operation not permitted" */
 	return -EPERM;
 }