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Date:      Thu, 24 May 2001 02:28:18 +0900 (JST)
From:      rmiya@cc.hirosaki-u.ac.jp
To:        FreeBSD-gnats-submit@freebsd.org
Cc:        rmiya@cc.hirosaki-u.ac.jp
Subject:   bin/27593: burncd msinfo returns wrong info at more than 2 sessioned CD-R <synopsis of the problem (one line)>
Message-ID:  <200105231728.f4NHSIg13142@scarab.st.hirosaki-u.ac.jp>
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>Number:         27593
>Category:       bin
>Synopsis:       burncd msinfo returns wrong info at more than 2 sessioned CD-R
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May 23 10:30:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ryo MIYAMOTO
>Release:        FreeBSD 4.3-RELEASE i386
>Organization:
Hirosaki-u 
>Environment:
System: FreeBSD scarab.st.hirosaki-u.ac.jp 4.3-RELEASE FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001 jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC i386


	
>Description:
For the multi-sessioned CD-R having more than 2 sessions, 
``burncd msinfo'' returns zero as the first value instead of 
the first LBA of the *last* track on the media. 

ex.
for the media with
	Starting track = 1, ending track = 3, TOC size = 34 bytes
	track     start  duration   block  length   type
	-------------------------------------------------
	    1   0:02.00   3:40.60       0   16410   data
	    2   3:40.60   2:17.27   16410   10152   data
	    3   5:56.12   0:12.49   26562     799   data
	  170   6:06.61         -   27361       -      -
should return values of ``26562, 27361''; 
however ``0, 27361'' is obtained.

	
>How-To-Repeat:
Type ``burncd msinfo'' for multi sessioned CD-R.

	
>Fix:
Use `struct ioc_read_toc_entry' and `ioctl(fd, CDIOREADTOCENTRYS, &entry)', 
instead of `struct ioc_read_toc_single_entry' and 
`ioctl(fd, CDIOREADTOCENTRY, &entry)'. 
Then the first LBA of the last track on the media can be obtained. 

	
>Release-Note:
>Audit-Trail:
>Unformatted:

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