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upgradedns: ensure lmdb lock files linked

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Ensure that the '-lock' files for the dns partitions as well as the data
files are linked when running
  samba_dnsupgrade --dns-backend=BIND9_DLZ
failure to create these links can cause corruption of the corresponding
data file.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14199

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Gary Lockyer
2019-12-19 16:31:46 +13:00
committed by Andrew Bartlett
parent f0cebbe4dd
commit 0bd479140c
2 changed files with 10 additions and 1 deletions
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10
python/samba/provision/sambadns.py
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@@ -850,9 +850,19 @@ def create_samdb_copy(samdb, logger, paths, names, domainsid, domainguid):
os.path.join(dns_samldb_dir, metadata_file))
os.link(os.path.join(private_dir, domainzone_file),
os.path.join(dns_dir, domainzone_file))
if backend_store == "mdb":
# If the file is an lmdb data file need to link the
# lock file as well
os.link(os.path.join(private_dir, domainzone_file + "-lock"),
os.path.join(dns_dir, domainzone_file + "-lock"))
if forestzone_file:
os.link(os.path.join(private_dir, forestzone_file),
os.path.join(dns_dir, forestzone_file))
if backend_store == "mdb":
# If the database file is an lmdb data file need to link the
# lock file as well
os.link(os.path.join(private_dir, forestzone_file + "-lock"),
os.path.join(dns_dir, forestzone_file + "-lock"))
except OSError:
logger.error(
"Failed to setup database for BIND, AD based DNS cannot be used")