[tboot-devel] Incorrect command line handling with GRUB 1.97 and above

[Michael G. <m.g...@tu...>]

Hi!

GRUB2 changed its behavior on how to deal with command lines[1] starting with version 1.97. There's
also a debian bug[2] filed.

GRUB2 now discards the first element (the filename) before storing the command line in mbi->cmdline.
Since TBoot always calls skip_filename(), g_cmdline loses first element of command line... It took
me hours to figure out that this was the reason why I don't get any output from TBoot.

A possible solution could be parsing of mbi->boot_loader_name, that can be tricky...

The workaround suggested by GRUB developers is to specify the filename a second time. As the
filename isn't relevant to TBoot, any dummy argument can be stated.

Michael

[1] http://www.mail-archive.com/gru...@gn.../msg11801.html
[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=557645