Re: [Libguestfs] libguestfs-test-tool on ubuntu: kernel panic

OK. I hacked some extra eprintfs into febootstrap.ml (learning a bit of ocaml in the process). I can confirm that the unpacked debian file has restrictive permissions: tmp/febootstrape193191fefe36c245623bc48e5b150a2.tmp/bash_4.1-2ubuntu3_amd64.deb.d$ ls -l bin total 920 -rwxr-x--- 1 dek redacted 934336 Apr 18 2010 bash lrwxrwxrwx 1 dek redacted 4 Aug 10 11:43 rbash -> bash lrwxrwxrwx 1 dek redacted 4 Aug 10 11:43 sh -> bash which is what is causing the permission check in febootstrap.ml to fail: else if mode land 0o004 = 0 then warn_unreadable := path :: !warn_unreadable

It looks like when I extract a package using dpkg-deb directly, it has permissive permissions, $ dpkg-deb --extract /tmp/febootstrap02946e2e929e78a0efa20670d79db1ab.tmp/bash_4.1-2ubuntu3_amd64.deb /tmp/shoop $ ls -l /tmp/shoop total 920 -rwxr-xr-x 1 dek redacted 934336 Apr 18 2010 bash lrwxrwxrwx 1 dek redacted 4 Aug 10 09:39 rbash -> bash lrwxrwxrwx 1 dek redacted 4 Aug 10 09:39 sh -> bash but, febootstrap runs this command: dpkg-deb --fsys-tarfile /tmp/febootstrape193191fefe36c245623bc48e5b150a2.tmp/bash_4.1-2ubuntu3_amd64.deb | (cd /tmp/febootstrape193191fefe36c245623bc48e5b150a2.tmp/bash_4.1-2ubuntu3_amd64.deb.d && tar xf - which creates a tar file that has this: -rwxr-xr-x root/root 934336 2010-04-18 19:16 ./bin/bash which unpacks to: -rwxr-x--- 1 dek redacted 934336 Apr 18 2010 bash I think this was happening due to my umask being set to '0027'. I set it to 0000, and I don't get the warning any more, and the generated appliance has a /bin/bash. Sorry about the noise. Maybe febootstrap should set a reasonable umask internally?