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systemd-boot: sync efi filesystem after update

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Since fat32 provides little recovery facilities after a crash,
it can leave the system in an unbootable state, when a crash/outage
happens shortly after an update. To decrease the likelihood of this
event sync the efi filesystem after each update.
This commit is contained in:
Jörg Thalheim 2017-05-09 18:56:26 +01:00
parent 779ae06467
commit e3beb07108
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GPG key ID: CA4106B8D7CC79FA
1 changed files with 7 additions and 0 deletions
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7
nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
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@ -2,12 +2,15 @@
import argparse import argparse
import shutil import shutil
import os import os
import sys
import errno import errno
import subprocess import subprocess
import glob import glob
import tempfile import tempfile
import errno import errno
import warnings import warnings
import ctypes
libc = ctypes.CDLL("libc.so.6")
def copy_if_not_exists(source, dest): def copy_if_not_exists(source, dest):
if not os.path.exists(dest): if not os.path.exists(dest):
@ -145,5 +148,9 @@ def main():
if os.readlink(system_dir(gen)) == args.default_config: if os.readlink(system_dir(gen)) == args.default_config:
write_loader_conf(gen) write_loader_conf(gen)
rc = libc.syncfs(os.open("@efiSysMountPoint@", os.O_RDONLY))
if rc != 0:
print("could not sync @efiSysMountPoint@: {}".format(os.strerror(rc)), file=sys.stderr)
if __name__ == '__main__': if __name__ == '__main__':
main() main()