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systemd-boot: add 'graceful' configuration option

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On some systems bootctl cannot write the `LoaderSystemToken` EFI variable
during installation, which results in a failure to install the boot
loader. Upstream provides a flag (--graceful) to ignore such write failures -
this change exposes it as a configuration option.

As the exact semantics of this option appear to be somewhat volatile it
should be used only if systemd-boot otherwise fails to install.
This commit is contained in:
Joerie de Gram
2021-09-26 17:54:36 +02:00
parent 5e37cc3186
commit 7bd84b6685
2 changed files with 26 additions and 5 deletions
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13
nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
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@@ -208,10 +208,15 @@ def main() -> None:
if os.path.exists("@efiSysMountPoint@/loader/loader.conf"):
os.unlink("@efiSysMountPoint@/loader/loader.conf")
if "@canTouchEfiVariables@" == "1":
subprocess.check_call(["@systemd@/bin/bootctl", "--path=@efiSysMountPoint@", "install"])
else:
subprocess.check_call(["@systemd@/bin/bootctl", "--path=@efiSysMountPoint@", "--no-variables", "install"])
flags = []
if "@canTouchEfiVariables@" != "1":
flags.append("--no-variables")
if "@graceful@" == "1":
flags.append("--graceful")
subprocess.check_call(["@systemd@/bin/bootctl", "--path=@efiSysMountPoint@"] + flags + ["install"])
else:
# Update bootloader to latest if needed
systemd_version = subprocess.check_output(["@systemd@/bin/bootctl", "--version"], universal_newlines=True).split()[1]