[arch-general] permission problems with brasero (cdrecord)

[Oliver Jaksch]

Looks like it's related to Bug #67265

> https://bbs.archlinux.org/viewtopic.php?id=257427
> https://bugs.archlinux.org/task/67265



On Monday, 7 September 2020, 12:43:59 CEST you wrote:
> Hi,
> 
> Today I discovered that I cannot burn CD from iso image with brasero - it
> says I do not have requires permissions.
> 
> My user is in "optical group".
> 
> I finally resolved this problem by setting sticky bit on /bin/cdrecord and
> /bin/cdrdao.
> 
> Is there a better solution?
> 
> Here is interesting part of log from brasero run with --brasero-media-debug
> --brasero-burn-debug --brasero-utils-debug:
> 
> BraseroBurn: (at burn-process.c:142) BraseroCDRecord got varg:
> BraseroBurn: (at burn-process.c:145)     cdrecord
> BraseroBurn: (at burn-process.c:145)     -v
> BraseroBurn: (at burn-process.c:145)     dev=/dev/sr0
> BraseroBurn: (at burn-process.c:145)     gracetime=0
> BraseroBurn: (at burn-process.c:145)     speed=24
> BraseroBurn: (at burn-process.c:145)     driveropts=burnfree
> BraseroBurn: (at burn-process.c:145)     fs=16m
> BraseroBurn: (at burn-process.c:145)     -data
> BraseroBurn: (at burn-process.c:145)     -nopad
> BraseroBurn: (at burn-process.c:145)     /home/zork/Downloads/cd140201.iso
> BraseroBurn: (at burn-process.c:624) BraseroCDRecord Launching command
> BraseroBurn: (at burn-job.c:1309) BraseroCDRecord called
> brasero_job_get_fd_out BraseroBurn: (at burn-task.c:439) entering loop
> BraseroBurn: (at burn-process.c:415) BraseroCDRecord stdout: BraseroBurn:
> (at burn-job.c:1190) BraseroCDRecord called brasero_job_get_fd_in
> BraseroBurn: (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: No
> write mode specified. BraseroBurn: (at burn-job.c:1374) BraseroCDRecord
> called brasero_job_get_flags BraseroBurn: (at burn-process.c:415)
> BraseroCDRecord stdout: BraseroBurn: (at burn-job.c:1309) BraseroCDRecord
> called brasero_job_get_fd_out BraseroBurn: (at burn-process.c:415)
> BraseroCDRecord stderr: cdrecord: Assuming -sao mode. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: If your drive
> does not accept -sao, try -tao. BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: Future versions of
> cdrecord may have different drive dependent defaults. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: Operation not
> permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: Cannot allocate
> memory. WARNING: Cannot do mlockall(2). BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: WARNING: This causes
> a high risk for buffer underruns. BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: Operation not
> permitted. WARNING: Cannot set RR-scheduler. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: Permission
> denied. WARNING: Cannot set priority using setpriority(). BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: WARNING: This
> causes a high risk for buffer underruns. BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: Insufficient 'file
> read' privileges. You will not be able to open all needed devices.
> BraseroBurn: (at burn-job.c:1374) BraseroCDRecord called
> brasero_job_get_flags BraseroBurn: (at burn-process.c:415) BraseroCDRecord
> stderr: cdrecord: Insufficient 'file write' privileges. You will not be
> able to open all needed devices. BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: Insufficient 'device'
> privileges. You may not be able to send all needed SCSI commands, this my
> cause various unexplainable problems. BraseroBurn: (at burn-job.c:1374)
> BraseroCDRecord called brasero_job_get_flags BraseroBurn: (at
> burn-process.c:415) BraseroCDRecord stderr: cdrecord: Insufficient
> 'memlock' privileges. You may get buffer underruns. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: Insufficient
> 'priocntl' privileges. You may get buffer underruns. BraseroBurn: (at
> burn-job.c:1374) BraseroCDRecord called brasero_job_get_flags BraseroBurn:
> (at burn-process.c:415) BraseroCDRecord stderr: cdrecord: Insufficient
> 'network' privileges. You will not be able to do remote SCSI.
> 
> Regards,
> Łukasz