diff options
Diffstat (limited to 'src/backend/access/transam/timeline.c')
| -rw-r--r-- | src/backend/access/transam/timeline.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/backend/access/transam/timeline.c b/src/backend/access/transam/timeline.c index c9344e5e8b4..be21968293c 100644 --- a/src/backend/access/transam/timeline.c +++ b/src/backend/access/transam/timeline.c @@ -439,11 +439,14 @@ writeTimeLineHistory(TimeLineID newTLI, TimeLineID parentTLI, /* * Now move the completed history file into place with its final name. - * The target file should not exist. */ TLHistoryFilePath(path, newTLI); - Assert(access(path, F_OK) != 0 && errno == ENOENT); - durable_rename(tmppath, path, ERROR); + + /* + * Perform the rename using link if available, paranoidly trying to avoid + * overwriting an existing file (there shouldn't be one). + */ + durable_rename_excl(tmppath, path, ERROR); /* The history file can be archived immediately. */ if (XLogArchivingActive()) @@ -514,11 +517,14 @@ writeTimeLineHistoryFile(TimeLineID tli, char *content, int size) /* * Now move the completed history file into place with its final name. - * The target file should not exist. */ TLHistoryFilePath(path, tli); - Assert(access(path, F_OK) != 0 && errno == ENOENT); - durable_rename(tmppath, path, ERROR); + + /* + * Perform the rename using link if available, paranoidly trying to avoid + * overwriting an existing file (there shouldn't be one). + */ + durable_rename_excl(tmppath, path, ERROR); } /* |