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Make 20-grub.install to exit if there is no machine ID set

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The kernel-install plugins are called with an environment variable named
$KERNEL_INSTALL_MACHINE_ID, which is set to the machine ID read from the
/etc/machine-id file. If the file doesn't exist or is empty, the variable
is empty and $BOOT_DIR_ABS is set to a temporary directory that's removed
after all the plugins exit.

So if $KERNEL_INSTALL_MACHINE_ID is not set, just exit the script since
installing a kernel BootLoaderSpec fragment won't be possible anyways.

Resolves: rhbz#1576573

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
This commit is contained in:
Javier Martinez Canillas 2018-06-15 15:06:00 +02:00 committed by Peter Jones
parent 64420615c2
commit db5dccf332
1 changed files with 4 additions and 0 deletions
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4
20-grub.install
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@ -1,5 +1,9 @@
#!/bin/bash
if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
exit 0
fi
[[ -f /etc/default/grub ]] && . /etc/default/grub
[[ -f /etc/os-release ]] && . /etc/os-release