[gentoo-user] cdrecord says permission denied

[gentoo-user] cdrecord says permission denied

[Renat Golubchyk]

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Hi folks!

For years I've been using cdrecord as a non-root user and without suid
bit set. Now it doesn't work any more. Here is the error message and
some other info:

========================================================================
$ cdrecord -eject -v -driveropts=burnproof -data dev=/dev/cdrw
bigdisk/soft/operating_systems/ophcrack-livecd-1.2.2.iso 
cdrecord: No write mode specified.
cdrecord: Asuming -sao mode.
cdrecord: If your drive does not accept -sao, try -tao.
cdrecord: Future versions of cdrecord may have different drive
dependent defaults.
Cdrecord-ProDVD-ProBD-Clone 2.01.01a34 (i686-pc-linux-gnu) Copyright
(C) 1995-2007 Jörg Schilling
TOC Type: 1 = CD-ROM
cdrecord: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK
limits.cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
cdrecord: Permission denied. WARNING: Cannot set priority using
setpriority().
cdrecord: WARNING: This causes a high risk for buffer underruns.
scsidev: '/dev/cdrw'
devname: '/dev/cdrw'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.9'.
Driveropts: 'burnproof'
SCSI buffer size: 64512
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'QSI     '
Identifikation : 'CDRW/DVD SBW-242'
Revision       : 'UX08'
Device seems to be: Generic mmc2 DVD-ROM.
Current: CD-RW
Profile: DVD-ROM 
Profile: CD-ROM 
Profile: CD-R 
Profile: CD-RW (current)
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE 
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P
RAW/R96R
Drive buf size : 1959936 = 1914 KB
FIFO size      : 4194304 = 4096 KB
Track 01: data   455 MB        
Total size:      522 MB (51:47.76) = 233082 sectors
Lout start:      523 MB (51:49/57) = 233082 sectors
cdrecord: Operation not permitted. Cannot send SCSI cmd via ioctl.
cdrecord: Operation not permitted. Cannot open or use SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you
are root.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

$ ll /dev/cdr*
lrwxrwxrwx 1 root root 3 2007-09-11 16:21 /dev/cdrom -> hdc
lrwxrwxrwx 1 root root 3 2007-09-11 16:21 /dev/cdrw -> hdc

$ ll /dev/hdc 
brw-rw---- 1 root cdrom 22, 0 2007-09-11 16:21 /dev/hdc

$ groups 
adm wheel cron audio cdrom video cdrw usb users locate portage plugdev
========================================================================

I can't find anything, neither in the ChangeLogs (ebuild or cdrtools)
nor on the forums/bugzilla. Everybody seems to like the idea of burning
CDs with root permissions. Can anybody point me in the right direction?


Thanks,
Renat

-- 
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)

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Re: [gentoo-user] cdrecord says permission denied

[Rafael Barrera Oro]

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did you try adding yourself to the cdrom group?

2007/9/11, Renat Golubchyk <ragermany@gmx.net>:
>
> Hi folks!
>
> For years I've been using cdrecord as a non-root user and without suid
> bit set. Now it doesn't work any more. Here is the error message and
> some other info:
>
> ========================================================================
> $ cdrecord -eject -v -driveropts=burnproof -data dev=/dev/cdrw
> bigdisk/soft/operating_systems/ophcrack-livecd-1.2.2.iso
> cdrecord: No write mode specified.
> cdrecord: Asuming -sao mode.
> cdrecord: If your drive does not accept -sao, try -tao.
> cdrecord: Future versions of cdrecord may have different drive
> dependent defaults.
> Cdrecord-ProDVD-ProBD-Clone 2.01.01a34 (i686-pc-linux-gnu) Copyright
> (C) 1995-2007 Jörg Schilling
> TOC Type: 1 = CD-ROM
> cdrecord: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK
> limits.cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
> cdrecord: WARNING: This causes a high risk for buffer underruns.
> cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> cdrecord: Permission denied. WARNING: Cannot set priority using
> setpriority().
> cdrecord: WARNING: This causes a high risk for buffer underruns.
> scsidev: '/dev/cdrw'
> devname: '/dev/cdrw'
> scsibus: -2 target: -2 lun: -2
> Warning: Open by 'devname' is unintentional and not supported.
> Linux sg driver version: 3.5.27
> Using libscg version 'schily-0.9'.
> Driveropts: 'burnproof'
> SCSI buffer size: 64512
> atapi: 1
> Device type    : Removable CD-ROM
> Version        : 0
> Response Format: 2
> Capabilities   :
> Vendor_info    : 'QSI     '
> Identifikation : 'CDRW/DVD SBW-242'
> Revision       : 'UX08'
> Device seems to be: Generic mmc2 DVD-ROM.
> Current: CD-RW
> Profile: DVD-ROM
> Profile: CD-ROM
> Profile: CD-R
> Profile: CD-RW (current)
> Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
> Driver flags   : MMC-3 SWABAUDIO BURNFREE
> Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P
> RAW/R96R
> Drive buf size : 1959936 = 1914 KB
> FIFO size      : 4194304 = 4096 KB
> Track 01: data   455 MB
> Total size:      522 MB (51:47.76) = 233082 sectors
> Lout start:      523 MB (51:49/57) = 233082 sectors
> cdrecord: Operation not permitted. Cannot send SCSI cmd via ioctl.
> cdrecord: Operation not permitted. Cannot open or use SCSI driver.
> cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you
> are root.
> cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
>
> $ ll /dev/cdr*
> lrwxrwxrwx 1 root root 3 2007-09-11 16:21 /dev/cdrom -> hdc
> lrwxrwxrwx 1 root root 3 2007-09-11 16:21 /dev/cdrw -> hdc
>
> $ ll /dev/hdc
> brw-rw---- 1 root cdrom 22, 0 2007-09-11 16:21 /dev/hdc
>
> $ groups
> adm wheel cron audio cdrom video cdrw usb users locate portage plugdev
> ========================================================================
>
> I can't find anything, neither in the ChangeLogs (ebuild or cdrtools)
> nor on the forums/bugzilla. Everybody seems to like the idea of burning
> CDs with root permissions. Can anybody point me in the right direction?
>
>
> Thanks,
> Renat
>
> --
> Probleme kann man niemals mit derselben Denkweise loesen,
> durch die sie entstanden sind.
>                                               (Einstein)
>
>

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Re: [gentoo-user] cdrecord says permission denied

[Renat Golubchyk]

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On Tue, 11 Sep 2007 15:04:04 -0300 "Rafael Barrera Oro"
<borafael@gmail.com> wrote:
> did you try adding yourself to the cdrom group?

I *am* in the cdrom group, as I have already wrote.

> > $ groups
> > adm wheel cron audio cdrom video cdrw usb users locate portage plugdev
> > ========================================================================


Renat

-- 
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)

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Re: [gentoo-user] cdrecord says permission denied

[Rafael Barrera Oro]

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sorry, missed it

2007/9/11, Renat Golubchyk <ragermany@gmx.net>:
>
> On Tue, 11 Sep 2007 15:04:04 -0300 "Rafael Barrera Oro"
> <borafael@gmail.com> wrote:
> > did you try adding yourself to the cdrom group?
>
> I *am* in the cdrom group, as I have already wrote.
>
> > > $ groups
> > > adm wheel cron audio cdrom video cdrw usb users locate portage plugdev
> > >
> ========================================================================
>
>
> Renat
>
> --
> Probleme kann man niemals mit derselben Denkweise loesen,
> durch die sie entstanden sind.
>                                               (Einstein)
>
>

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Re: [gentoo-user] cdrecord says permission denied

[Stephen Wittig]

The only things that I can guess are that it is trying to update
something in "/proc" or it needs to load a kernel module before
writing.

Just for fun - try burning a disk as root. Then try burning another
dist as a non-root user. If the the second disk burns then one or the
other of the above is the problem.

-Good Luck, Stephen


On 9/11/07, Renat Golubchyk <ragermany@gmx.net> wrote:
> On Tue, 11 Sep 2007 15:04:04 -0300 "Rafael Barrera Oro"
> <borafael@gmail.com> wrote:
> > did you try adding yourself to the cdrom group?
>
> I *am* in the cdrom group, as I have already wrote.
>
> > > $ groups
> > > adm wheel cron audio cdrom video cdrw usb users locate portage plugdev
> > > ========================================================================
>
>
> Renat
>
> --
> Probleme kann man niemals mit derselben Denkweise loesen,
> durch die sie entstanden sind.
>                                               (Einstein)
>
>
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] cdrecord says permission denied

[Renat Golubchyk]

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On Tue, 11 Sep 2007 16:27:15 -0500 "Stephen Wittig" <nofx911@gmail.com>
wrote:
> The only things that I can guess are that it is trying to update
> something in "/proc" or it needs to load a kernel module before
> writing.

Why would cdrecord want to update anything in /proc? There is no
informatiom that cdrecord uses. And by the way, strace didn't show
anything helpful.

> Just for fun - try burning a disk as root. Then try burning another
> dist as a non-root user.

I can not burn CDs as a non-root user (i.e. unprivileged; I can burn
with sudo). That's why I wrote the email in the first place. ;-)


Cheers,
Renat

-- 
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)

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