Red Hat Bugzilla – Bug 448048
CDROMMULTISESSION returns xa_flag=1 for non-multisession CDs
Last modified: 2009-07-14 11:47:54 EDT
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Description of problem:
The CDROMMULTISESSION ioctl sometimes returns with cdrom_multisession.xa_flag = 1 for CDs, even ones that are not multisession.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Compile and run attached program on difference CDs.
Often it prints:
fmt:1 xa_flag:1 addr:163570
for a CD that is not multisession.
For non-multisession CDs it should print:
fmt:1 xa_flag:0 addr:0
If it matters, here are the kernel messages for my DVD-RW drive:
May 18 21:05:05 earth kernel: ata5.00: ATAPI: SONY CD-RW CRX300E, KYS2, max UDMA/33
May 18 21:05:05 earth kernel: ata5.00: configured for UDMA/33
May 18 21:05:05 earth kernel: scsi 4:0:0:0: CD-ROM SONY CD-RW CRX300E KYS2 PQ: 0 ANSI: 5
May 18 21:05:05 earth kernel: Driver 'sr' needs updating - please use bus_type methods
May 18 21:05:05 earth kernel: sr0: scsi3-mmc drive: 0x/48x writer cd/rw xa/form2 cdda tray
May 18 21:05:05 earth kernel: Uniform CD-ROM driver Revision: 3.20
May 18 21:05:05 earth kernel: sd 0:0:0:0: Attached scsi generic sg0 type 0
May 18 21:05:05 earth kernel: sd 1:0:0:0: Attached scsi generic sg1 type 0
May 18 21:05:05 earth kernel: sd 2:0:0:0: Attached scsi generic sg2 type 0
May 18 21:05:05 earth kernel: sd 3:0:0:0: Attached scsi generic sg3 type 0
May 18 21:05:05 earth kernel: sr 4:0:0:0: Attached scsi generic sg4 type 5
It had been returning the incorrect results every time, but as I was writing the test program to report this bug, it started only failing some of the time instead of every time.
Created attachment 306448 [details]
CDROMMULTISESSION test program
Compile with gcc -o cdmstest cdmstest.c
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