[Bug 798447] Re: item_in_dir() shell function does not handle missing directory

[Colin Watson]

Thanks; committed upstream.

** Changed in: os-prober (Ubuntu)
   Importance: Undecided => Low

** Changed in: os-prober (Ubuntu)
       Status: New => Fix Committed

** Changed in: os-prober (Ubuntu)
     Assignee: (unassigned) => Colin Watson (cjwatson)

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https://bugs.launchpad.net/bugs/798447

Title:
  item_in_dir() shell function does not handle missing directory

Status in “os-prober” package in Ubuntu:
  Fix Committed

Bug description:
  Binary package hint: os-prober

  This concerns os-prober 1.44ubuntu1 in Ubuntu Natty.

  When I invoke update-grub(8) in a certain chroot'ed Ubuntu
  installation, I see this:

  Generating grub.cfg ...
  Found linux image: /boot/vmlinuz-2.6.38-8-generic
  Found initrd image: /boot/initrd.img-2.6.38-8-generic
  Found memtest86+ image: /boot/memtest86+.bin
    No volume groups found
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  ls: cannot access /config: No such file or directory
  done

  I have a filesystem mounted on /config outside of the chroot. Because
  the system /proc directory is bind-mounted inside the chroot,
  /proc/mounts shows the /config mount, even though it is not
  accessible.

  I traced the operation of update-grub(8) to see what was producing the
  ls(1) errors, leading me to to the item_in_dir() function in
  /usr/share/os-prober/common.sh. Adding the following line to it, in
  the appropriate place...

      [ -d "$2" ] || return 1

  ...makes the problem go away.

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