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    SubjectRe: cdrecord dev=ATA cannont scanbus as non-root

    On 2004.11.29, Jan Engelhardt wrote:
    > >Hi all...
    > >
    > >I'm trying to get out of the mess that cd burning looks like nowadays in
    > >linux...
    > >
    > >As I use a 2.6.x kernel, I folowed this hints:
    > >- no suid cdrecord, it uses capabilities
    > >- make the burner owned by console user (pam)
    > >
    > >cdrecord burns ok using dev=/dev/burner, but I can't get GUI tools to
    > >burn using the /dev interface. All of them try to load ide-scsi, and
    > >do a scan based on ATAPI:.
    > >Some tools try to scan with dev=ATA:x:y:z, but that does not work as
    > >normal user.
    >
    > Maybe because it should have been dev=ATAPI: ?
    >
    > >How can I make 'cdrecord dev=ATA -scanbus' work as non-root ?
    >
    > Weird, works for me:
    >
    > 22:49 io:~ > cdrecord -dev=ATAPI: -scanbus

    dev=ATAPI uses ide-scsi interface, through /dev/sgX. And:

    > scsibus: -1 target: -1 lun: -1
    > Warning: Using ATA Packet interface.
    > Warning: The related Linux kernel interface code seems to be unmaintained.
    > Warning: There is absolutely NO DMA, operations thus are slow.

    dev=ATA uses direct IDE burning. Try that as root. In my box, as root:

    werewolf:~# cdrecord dev=ATAPI -scanbus
    scsibus0:
    0,0,0 0) *
    0,1,0 1) 'TOSHIBA ' 'DVD-ROM SD-M1712' '1004' Removable CD-ROM
    0,2,0 2) *
    0,3,0 3) *
    0,4,0 4) *
    0,5,0 5) *
    0,6,0 6) *
    0,7,0 7) *
    scsibus1:
    1,0,0 100) 'HL-DT-ST' 'DVDRAM GSA-4120B' 'A102' Removable CD-ROM
    1,1,0 101) *
    1,2,0 102) *
    1,3,0 103) *
    1,4,0 104) *
    1,5,0 105) *
    1,6,0 106) *
    1,7,0 107) *

    werewolf:~# cdrecord dev=ATA -scanbus
    scsidev: 'ATA'
    devname: 'ATA'
    scsibus: -2 target: -2 lun: -2
    #########################################################################################
    #
    # Warning: Using ATAPI via /dev/hd* interface. Use dev=ATA:X,Y,Z or dev=/dev/hdX
    #
    #########################################################################################

    scsibus0:
    0,0,0 0) *
    0,1,0 1) 'TOSHIBA ' 'DVD-ROM SD-M1712' '1004' Removable CD-ROM
    0,2,0 2) *
    0,3,0 3) *
    0,4,0 4) *
    0,5,0 5) *
    0,6,0 6) *
    0,7,0 7) *
    scsibus1:
    1,0,0 100) 'HL-DT-ST' 'DVDRAM GSA-4120B' 'A102' Removable CD-ROM
    1,1,0 101) *
    1,2,0 102) *
    1,3,0 103) *
    1,4,0 104) *
    1,5,0 105) *
    1,6,0 106) *
    1,7,0 107) *

    The scan through ATA lasts much less than with ATAPI, and you can burn with
    dev=ATA:1,0,0 or dev=/dev/burner, which is the new recommended way.

    But as I said, scanning through ATA is not avaliable to normal users, so
    it is someway useless.

    --
    J.A. Magallon <jamagallon()able!es> \ Software is like sex:
    werewolf!able!es \ It's better when it's free
    Mandrakelinux release 10.2 (Cooker) for i586
    Linux 2.6.10-rc2-jam3 (gcc 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)) #1


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