0e5889b98a
When generating grub.cfg using grub-mkconfig and the scripts 10_linux and 20_linux_xen there is no way to add kernel command line parameters _only_ to the recovery entries generated. This is needed to e.g. start a debug shell in installations using systemd using the kernel command line parameter "systemd.debug-shell" or to recover in a system with encrypted root in situations where the decryption of the root filesystem per crypttab in the intiramfs image is broken and the recovery entry should contain information how to decrypt the rootfs (cryptopts=). This patch does not change the default behaviour of the GRUB if GRUB_CMDLINE_LINUX_RECOVERY is not set. If GRUB_CMDLINE_LINUX_RECOVERY is set and the generated recovery entry should include the kernel parameter "single" the parameter must be explicitly included in GRUB_CMDLINE_LINUX_RECOVERY. As far as I know all credits for the idea and the initial implementation go to Kyle Ranking of Purism. Signed-off-by: Kyle Rankin <kyle.rankin@puri.sm> Signed-off-by: Chris Vogel <chris@z9.de> 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. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. 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'