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-rw-r--r--sys/scsi/cd.c59
1 files changed, 58 insertions, 1 deletions
diff --git a/sys/scsi/cd.c b/sys/scsi/cd.c
index f643c37..00df2f7 100644
--- a/sys/scsi/cd.c
+++ b/sys/scsi/cd.c
@@ -14,7 +14,7 @@
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
- * $Id: cd.c,v 1.81 1997/03/24 11:24:54 bde Exp $
+ * $Id: cd.c,v 1.82 1997/04/02 09:05:38 jmg Exp $
*/
#include "opt_bounce.h"
@@ -834,6 +834,63 @@ cd_ioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p,
error = copyout(data.entries, te->data, len);
}
break;
+ case CDIOREADTOCENTRY:
+ {
+ struct {
+ struct ioc_toc_header header;
+ struct cd_toc_entry entry;
+ } data;
+ struct ioc_read_toc_single_entry *te =
+ (struct ioc_read_toc_single_entry *) addr;
+ struct ioc_toc_header *th;
+ u_int32_t track;
+
+ if (te->address_format != CD_MSF_FORMAT
+ && te->address_format != CD_LBA_FORMAT) {
+ error = EINVAL;
+ break;
+ }
+
+ th = &data.header;
+ error = cd_read_toc(unit, 0, 0,
+ (struct cd_toc_entry *)th, sizeof (*th));
+ if (error)
+ break;
+
+ if (sc_link->quirks & CD_Q_BCD_TRACKS) {
+ /* we are going to have to convert the BCD
+ * encoding on the cd to what is expected
+ */
+ th->starting_track =
+ bcd2bin(th->starting_track);
+ th->ending_track = bcd2bin(th->ending_track);
+ }
+
+ track = te->track;
+ if (track == 0)
+ track = th->starting_track;
+ else if (track == LEADOUT)
+ /* OK */;
+ else if (track < th->starting_track ||
+ track > th->ending_track + 1) {
+ error = EINVAL;
+ break;
+ }
+
+ error = cd_read_toc(unit, te->address_format,
+ track,
+ (struct cd_toc_entry *)&data,
+ sizeof data);
+ if (error)
+ break;
+
+ if (sc_link->quirks & CD_Q_BCD_TRACKS)
+ data.entry.track = bcd2bin(data.entry.track);
+
+ bcopy(&data.entry, &te->entry,
+ sizeof(struct cd_toc_entry));
+ }
+ break;
case CDIOCSETPATCH:
{
struct ioc_patch *arg = (struct ioc_patch *) addr;
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