fix(disk): use fmask=0177 for EFI partition mount options - #4715
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Update default fmask from 0077 to 0177 for EFI system partitions when mounting. Using 0177 aligns with systemd defaults while preventing non-executable file bit permissions and satisfying bootctl requirements. Fixes archlinux#4714
This was referenced Aug 15, 2026
svartkanin
approved these changes
Aug 20, 2026
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Fixes #4714
Context & Rationale
When setting default mount options for the EFI system partition,
fmask=0077was previously used. Updating this tofmask=0177ensures files on the ESP are not created with execute permissions, while keepingdmask=0077for directories. This aligns with systemd's default behavior for ESP mount options (fmask=0177,dmask=0077) and satisfiesbootctlrequirements.Changes
fmask=0077tofmask=0177inarchinstall/lib/installer.pywhen setting EFI partition mount options.