[PATCH] Use realpath to clean up arguments to grub-probe

[Mario Limonciello]

Hi,

I've found that the EFI grub-install command can fail to properly figure out devices when using the --root-directory command.  This seems to be rooted from a call to grub-probe with a ".." in the path.

This is fixed by using realpath to clean up the path passed in grub-probe.  Please see the attached patch.

Thanks,

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Mario Limonciello
Linux Engineer
Dell | OS Engineering

realpath.patch
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