03e72830ab
Currently grub-editenv and related tools are not able to follow symbolic links when finding their config file. For example the grub-editenv create command will wrongly overwrite a symlink in /boot/grub2/grubenv with a new regular file, instead of creating a file in the path the symlink points to. A following patch will change that and add support in grub-editenv to follow symbolic links when finding the grub environment variables file. Add a grub_util_readlink() helper function that is just a wrapper around the platform specific function to read the value of a symbolic link. This helper function will be used by the following patch for grub-editenv. The helper function is not added for Windows, since this operating system doesn't have a primitive to read the contents of a symbolic link. Signed-off-by: Peter Jones <pjones@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'