bugGNU GRUB - Bugs: bug #63481, 30_os-prober test...


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bug #63481: 30_os-prober test GRUB_OS_PROBER_SKIP_LIST wrong

Submitter:  David Garfield <divad27182>
Submitted:  Wed 07 Dec 2022 11:04:02 AM UTC
Category:  Configuration Severity:  Major
Priority:  5 - Normal Item Group:  Software Error
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  David Garfield
Open/Closed:  Open Release:  other
Release:  Reproducibility:  Every Time
Planned Release:  None

Wed 07 Dec 2022 11:04:02 AM UTC, original submission:  

According to the documentation, the @name clause is added to the test string for EFI chainloaders.  This is based on os-prober outputting the same clause. 

os-prober output data seems to make the first field be either a device name, or a device name "@" chainloader path.  Unfortunately, the test for the presence of the @ reads:

    if [ x"${DEVICE#*@}" != x ] ; then

This tests for the presence of something after the "@", but is always true if there is no "@". 

I think the test should read:

    if [ x"${DEVICE#*@}" != x"${DEVICE}" ] ; then

It may be that a combined test (differentiating "A", "A@", and "A@B") may be needed, if os-prober has changed its output format.

This is line 124 of util/grub.d/30_os-prober.in in grub-2.06

David Garfield <divad27182>


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