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gummiboot-builder.py: Remove old entries before adding new ones

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Fixes #1483

Signed-off-by: Shea Levy <shea@shealevy.com>
This commit is contained in:
Shea Levy 2014-02-03 17:41:06 -05:00
parent e1b422d348
commit 5e72e36f95
1 changed files with 8 additions and 6 deletions
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14
nixos/modules/system/boot/loader/gummiboot/gummiboot-builder.py
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@ -9,7 +9,6 @@ import tempfile
import errno
def copy_if_not_exists(source, dest):
known_paths.append(dest)
if not os.path.exists(dest):
shutil.copyfile(source, dest)
@ -38,12 +37,13 @@ def write_loader_conf(generation):
print >> f, "default nixos-generation-%d" % (generation)
os.rename("@efiSysMountPoint@/loader/loader.conf.tmp", "@efiSysMountPoint@/loader/loader.conf")
def copy_from_profile(generation, name):
def copy_from_profile(generation, name, dry_run=False):
store_file_path = os.readlink("%s/%s" % (system_dir(generation), name))
suffix = os.path.basename(store_file_path)
store_dir = os.path.basename(os.path.dirname(store_file_path))
efi_file_path = "/efi/nixos/%s-%s.efi" % (store_dir, suffix)
copy_if_not_exists(store_file_path, "@efiSysMountPoint@%s" % (efi_file_path))
if not dry_run:
copy_if_not_exists(store_file_path, "@efiSysMountPoint@%s" % (efi_file_path))
return efi_file_path
def add_entry(generation):
@ -72,6 +72,10 @@ def get_generations(profile):
def remove_old_entries(gens):
slice_start = len("@efiSysMountPoint@/loader/entries/nixos-generation-")
slice_end = -1 * len(".conf")
known_paths = []
for gen in gens:
known_paths.append copy_from_profile(gen, "kernel", True)
known_paths.append copy_from_profile(gen, "initrd", True)
for path in glob.iglob("@efiSysMountPoint@/loader/entries/nixos-generation-[1-9]*.conf"):
try:
gen = int(path[slice_start:slice_end])
@ -94,7 +98,6 @@ if os.getenv("NIXOS_INSTALL_GRUB") == "1":
else:
subprocess.check_call(["@gummiboot@/bin/gummiboot", "--path=@efiSysMountPoint@", "--no-variables", "install"])
known_paths = []
mkdir_p("@efiSysMountPoint@/efi/nixos")
mkdir_p("@efiSysMountPoint@/loader/entries")
try:
@ -106,9 +109,8 @@ except IOError as e:
machine_id = None
gens = get_generations("system")
remove_old_entries(gens)
for gen in gens:
add_entry(gen)
if os.readlink(system_dir(gen)) == args.default_config:
write_loader_conf(gen)
remove_old_entries(gens)