Bug? : Failed SElinux fixfiles causes generated liveCD unable to run in readwrite

[Mohd Izhar Firdaus Ismail]

I'm getting this error when creating a liveCD using livecd-tools

========
/sbin/setfiles:  labeling files under /
*********************matchpathcon_filespec_eval:  hash table stats:
17497 elements, 12838/65536 buckets used, longest chain length 5
/sbin/setfiles:  labeling files under /tmp
matchpathcon_filespec_eval:  hash table stats: 2 elements, 2/65536
buckets used, longest chain length 1
/sbin/setfiles:  labeling files under /home
matchpathcon_filespec_eval:  hash table stats: 1 elements, 1/65536
buckets used, longest chain length 1
/sbin/setfiles:  labeling files under /mnt/storage
/sbin/setfiles:  error while labeling files under /mnt/storage
========

and this error causes the generated livecd couldnt run as readwrite
... at first I thought it was caused by something else, but after
commenting out this line in livecd-creator , the problem gone ..

   #     os.system("/usr/sbin/chroot %s/install_root /sbin/fixfiles
restore"%(self.build_dir))

(yup i know i disabled it altogether) .. but I'm wondering what causes
SElinux to fail in the first place .. i didnt enable SElinux in the
box that generated the liveCD - is that what causes the error? or is
it something else ?... and why does the liveCD fails to run as
readwrite if the SElinux labeling failed ??..


-- 
-----------------------------------------------
regards
Hikaru
-----------------------------------------------
Mohd Izhar Firdaus Bin Ismail
Amano Hikaru
天野晃 「あまの ひかる」
Universiti Teknologi PETRONAS
ICT 2nd Year 1st Semester
mohd.izhar.firdaus(a)gmail.com
-----------------------------------------------
kagesenshi.87(a)gmail.com
GPG: http://www.rootshell.be/~kagesens/public-key.asc
Blog: http://kagesenshi.blogspot.com
-----------------------------------------------

[Bill Nottingham]

Hikaru Amano (kagesenshi.87(a)gmail.com) said: 
>  I'm getting this error when creating a liveCD using livecd-tools
>  
>  ========
>  /sbin/setfiles:  labeling files under /
>  *********************matchpathcon_filespec_eval:  hash table stats:
>  17497 elements, 12838/65536 buckets used, longest chain length 5
>  /sbin/setfiles:  labeling files under /tmp
>  matchpathcon_filespec_eval:  hash table stats: 2 elements, 2/65536
>  buckets used, longest chain length 1
>  /sbin/setfiles:  labeling files under /home
>  matchpathcon_filespec_eval:  hash table stats: 1 elements, 1/65536
>  buckets used, longest chain length 1
>  /sbin/setfiles:  labeling files under /mnt/storage
>  /sbin/setfiles:  error while labeling files under /mnt/storage
>  ======== 
The hint there is the errors - AFAICT, setfiles is being run on
the wrong root.

>  (yup i know i disabled it altogether) .. but I'm wondering what
> causes
>  SElinux to fail in the first place .. i didnt enable SElinux in the
>  box that generated the liveCD - is that what causes the error? 
Very possibly.

>  or is
>  it something else ?... and why does the liveCD fails to run as
>  readwrite if the SElinux labeling failed ??.. 
The LiveCD tries to use SELinux by default - if labelling is wrong,
it's *not* going to work.

Bill

[Mohd Izhar Firdaus Ismail]

On 2/24/07, Bill Nottingham <notting(a)redhat.com&gt; wrote:
>  Hikaru Amano (kagesenshi.87(a)gmail.com) said:
>  > I'm getting this error when creating a liveCD using livecd-tools
>  >
>  > ========
>  > /sbin/setfiles:  labeling files under /
>  > *********************matchpathcon_filespec_eval:  hash table stats:
>  > 17497 elements, 12838/65536 buckets used, longest chain length 5
>  > /sbin/setfiles:  labeling files under /tmp
>  > matchpathcon_filespec_eval:  hash table stats: 2 elements, 2/65536
>  > buckets used, longest chain length 1
>  > /sbin/setfiles:  labeling files under /home
>  > matchpathcon_filespec_eval:  hash table stats: 1 elements, 1/65536
>  > buckets used, longest chain length 1
>  > /sbin/setfiles:  labeling files under /mnt/storage
>  > /sbin/setfiles:  error while labeling files under /mnt/storage
>  > ========
>
>  The hint there is the errors - AFAICT, setfiles is being run on
>  the wrong root.
>  
I'm using the the livecd-creator script from rpm ... (with the only
modification is to the fixfiles line) .. what might possibly be causes
it to run on the wrong root?? ...

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda3             7.6G  5.3G  2.0G  74% /
tmpfs                 252M     0  252M   0% /dev/shm
/dev/mapper/LVM-temp 1008M   35M  923M   4% /tmp
/dev/mapper/LVM-home  2.0G  671M  1.3G  36% /home
/dev/mapper/LVM-storage  26G  2.6G   22G  11% /mnt/storage

I ran the script in a folder in /mnt/storage/ partition ... and from
what i can understand from livecd-creator code, the fixfiles should be
done chrooted in /var/tmp/livecd-creator/<temp-dir>/install_root/ ..
which left me wondering cluelessly ..

thanks

-- 
-----------------------------------------------
regards
Hikaru
-----------------------------------------------
Mohd Izhar Firdaus Bin Ismail
Amano Hikaru
天野晃 「あまの ひかる」
Universiti Teknologi PETRONAS
ICT 2nd Year 1st Semester
mohd.izhar.firdaus(a)gmail.com
-----------------------------------------------
kagesenshi.87(a)gmail.com
GPG: http://www.rootshell.be/~kagesens/public-key.asc
Blog: http://kagesenshi.blogspot.com
-----------------------------------------------

[Bill Nottingham]

Hikaru Amano (kagesenshi.87(a)gmail.com) said: 
>  Filesystem            Size  Used Avail Use% Mounted on
>  /dev/hda3             7.6G  5.3G  2.0G  74% /
>  tmpfs                 252M     0  252M   0% /dev/shm
>  /dev/mapper/LVM-temp 1008M   35M  923M   4% /tmp
>  /dev/mapper/LVM-home  2.0G  671M  1.3G  36% /home
>  /dev/mapper/LVM-storage  26G  2.6G   22G  11% /mnt/storage
>  
>  I ran the script in a folder in /mnt/storage/ partition ... and from
>  what i can understand from livecd-creator code, the fixfiles should be
>  done chrooted in /var/tmp/livecd-creator/<temp-dir>/install_root/ ..
>  which left me wondering cluelessly .. 
It's a bug. fixfiles has... interesting... behavior.

Bill