--- cdrdao-1.2.0.orig/scsilib/libscg/scsitransp.c
+++ cdrdao-1.2.0/scsilib/libscg/scsitransp.c
@@ -52,8 +52,8 @@
  *	Choose your name instead of "schily" and make clear that the version
  *	string is related to a modified source.
  */
-LOCAL	char	_scg_version[]		= "0.8";	/* The global libscg version	*/
-LOCAL	char	_scg_auth_schily[]	= "schily";	/* The author for this module	*/
+LOCAL	char	_scg_version[]		= "0.8ubuntu1";	/* The global libscg version	*/
+LOCAL	char	_scg_auth_ubuntu[]	= "ubuntu";	/* The author for this module	*/
 
 #define	DEFTIMEOUT	20	/* Default timeout for SCSI command transport */
 
@@ -137,7 +137,7 @@
 		 * return "schily" for the SCG_AUTHOR request.
 		 */
 		case SCG_AUTHOR:
-			return (_scg_auth_schily);
+			return (_scg_auth_ubuntu);
 		case SCG_SCCS_ID:
 			return (sccsid);
 		default:
--- cdrdao-1.2.0.orig/scsilib/libscg/scsi-linux-ata.c
+++ cdrdao-1.2.0/scsilib/libscg/scsi-linux-ata.c
@@ -267,7 +267,7 @@
 			starget,
 			slun;
 
-		f = open(device, O_RDWR | O_NONBLOCK);
+		f = sg_open_excl(device, O_RDWR | O_NONBLOCK);
 
 		if (f < 0) {
 			if (scgp->errstr)
@@ -319,7 +319,7 @@
 
 	for (i = 0; globbuf.gl_pathv && globbuf.gl_pathv[i] != NULL ; i++) {
 		device = globbuf.gl_pathv[i];
-		if ((f = open(device, O_RDWR | O_NONBLOCK)) < 0) {
+		if ((f = sg_open_excl(device, O_RDWR | O_NONBLOCK)) < 0) {
 			if (errno != ENOENT && errno != ENXIO && errno != ENODEV && errno != EACCES) {
 				if (scgp->debug > 4) {
 					js_fprintf((FILE *) scgp->errfile,
--- cdrdao-1.2.0.orig/scsilib/libscg/scsi-linux-pg.c
+++ cdrdao-1.2.0/scsilib/libscg/scsi-linux-pg.c
@@ -211,7 +211,7 @@
 			return (0);
 #endif
 		js_snprintf(devname, sizeof (devname), "/dev/pg%d", tgt);
-		f = open(devname, O_RDWR | O_NONBLOCK);
+		f = sg_open_excl(devname, O_RDWR | O_NONBLOCK);
 		if (f < 0) {
 			if (scgp->errstr)
 				js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
@@ -228,7 +228,7 @@
 		for (i = 0; globbuf.gl_pathv && globbuf.gl_pathv[i] != NULL ; i++) {
 		        dev = globbuf.gl_pathv[i];
 			tgt = atoi(&dev[7]);
-			f = open(dev, O_RDWR | O_NONBLOCK);
+			f = sg_open_excl(dev, O_RDWR | O_NONBLOCK);
 			if (f < 0) {
 				/*
 				 * Set up error string but let us clear it later
@@ -261,7 +261,7 @@
 
 		if (tlun < 0)
 			return (0);
-		f = open(device, O_RDWR | O_NONBLOCK);
+		f = sg_open_excl(device, O_RDWR | O_NONBLOCK);
 /*		if (f < 0 && errno == ENOENT) {*/
 		if (f < 0) {
 			if (scgp->errstr)
--- cdrdao-1.2.0.orig/scsilib/libscg/scsi-linux-sg.c
+++ cdrdao-1.2.0/scsilib/libscg/scsi-linux-sg.c
@@ -199,6 +199,8 @@
 /*#define	MISALIGN*/
 /*#undef	SG_GET_BUFSIZE*/
 
+int    sg_open_excl    __PR((char *device, int mode));
+
 #if	defined(USE_PG) && !defined(USE_PG_ONLY)
 #include "scsi-linux-pg.c"
 #endif
@@ -225,6 +227,30 @@
 #endif
 LOCAL	void	sg_settimeout	__PR((int f, int timeout));
 
+
+int
+sg_open_excl(device, mode)
+       char    *device;
+       int     mode;
+{
+       int f;
+       int i;
+       f = open(device, mode|O_EXCL);
+       if (f == -1 && (errno == EACCES || errno == EBUSY)) {
+	    fprintf(stderr, "Error trying to open %s exclusively (%s)...retrying...\n", device, strerror(errno));
+       }
+       for (i = 0; (i < 10) && (f == -1 && (errno == EACCES || errno == EBUSY)); i++) {
+           usleep(1000000 + 100000.0 * rand()/(RAND_MAX+1.0));
+           f = open(device, mode|O_EXCL);
+       }
+       /* Open it anyway to make scanbus happy */
+       if (f == -1) {
+           f = open(device, mode);
+       }
+       return f;
+}
+
+
 /*
  * Return version information for the low level SCSI transport code.
  * This has been introduced to make it easier to trace down problems
@@ -407,7 +433,7 @@
 		
 		for (i = 0; globbuf.gl_pathv && globbuf.gl_pathv[i] != NULL ; i++) {
 			devname = globbuf.gl_pathv[i];
-			f = open(devname, O_RDWR | O_NONBLOCK);
+			f = sg_open_excl(devname, O_RDWR | O_NONBLOCK);
 			if (f < 0) {
 				/*
 				 * Set up error string but let us clear it later
@@ -452,12 +478,13 @@
 	if (nopen == 0) {
 		glob("/dev/scd[0-9]", GLOB_NOSORT, NULL, &globbuf);
 		glob("/dev/scd[0-9][0-9]", GLOB_NOSORT|GLOB_APPEND, NULL, &globbuf);
-		/*glob("/dev/sg[a-z]", GLOB_NOSORT|GLOB_APPEND, NULL, &globbuf);*/
+		glob("/dev/sg[a-z]", GLOB_NOSORT|GLOB_APPEND, NULL, &globbuf);
+		glob("/dev/sg[0-9]", GLOB_NOSORT|GLOB_APPEND, NULL, &globbuf);
 		
 		for (i = 0; globbuf.gl_pathv && globbuf.gl_pathv[i] != NULL ; i++) {
 			devname = globbuf.gl_pathv[i];
 
-			f = open(devname, O_RDWR | O_NONBLOCK);
+			f = sg_open_excl(devname, O_RDWR | O_NONBLOCK);
 			if (f < 0) {
 				/*
 				 * Set up error string but let us clear it later
@@ -466,7 +493,7 @@
 				if (scgp->errstr)
 					js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
 						    "Cannot open '/dev/scd*'");
-				if (errno != ENOENT && errno != ENXIO && errno != ENODEV) {
+				if (errno != ENOENT && errno != ENXIO && errno != ENODEV && errno != EROFS) {
 					if (scgp->errstr)
 						js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
 							    "Cannot open '%s'", devname);
@@ -510,7 +537,7 @@
 			"Warning: Open by 'devname' is unintentional and not supported.\n");
 		}
 					/* O_NONBLOCK is dangerous */
-		f = open(device, O_RDWR | O_NONBLOCK);
+		f = sg_open_excl(device, O_RDWR | O_NONBLOCK);
 /*		if (f < 0 && errno == ENOENT)*/
 /*			goto openpg;*/