From: Daira Hopwood Date: Wed, 30 Sep 2015 15:29:05 +0000 (+0100) Subject: Cleanups relating to order of mtime and ctime. X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/flags/(%5B%5E?a=commitdiff_plain;h=4e1b425b6d8872b0e39d9195e22b0e191fd1e68e;p=tahoe-lafs%2Ftahoe-lafs.git Cleanups relating to order of mtime and ctime. Signed-off-by: Daira Hopwood --- diff --git a/src/allmydata/backupdb.py b/src/allmydata/backupdb.py index ba348c32..1113d9ec 100644 --- a/src/allmydata/backupdb.py +++ b/src/allmydata/backupdb.py @@ -21,7 +21,8 @@ CREATE TABLE version CREATE TABLE local_files ( path VARCHAR(1024) PRIMARY KEY, -- index, this is an absolute UTF-8-encoded local filename - size INTEGER, -- os.stat(fn)[stat.ST_SIZE] + -- note that size is before mtime and ctime here, but after in function parameters + size INTEGER, -- os.stat(fn)[stat.ST_SIZE] (NULL if the file has been deleted) mtime NUMBER, -- os.stat(fn)[stat.ST_MTIME] ctime NUMBER, -- os.stat(fn)[stat.ST_CTIME] fileid INTEGER%s @@ -186,9 +187,9 @@ class BackupDB: is not healthy, please upload the file and call r.did_upload(filecap) when you're done. - If use_timestamps=True (the default), I will compare ctime and mtime + If use_timestamps=True (the default), I will compare mtime and ctime of the local file against an entry in my database, and consider the - file to be unchanged if ctime, mtime, and filesize are all the same + file to be unchanged if mtime, ctime, and filesize are all the same as the earlier version. If use_timestamps=False, I will not trust the timestamps, so more files (perhaps all) will be marked as needing upload. A future version of this database may hash the file to make @@ -200,10 +201,12 @@ class BackupDB: """ path = abspath_expanduser_unicode(path) + + # XXX consider using get_pathinfo s = os.stat(path) size = s[stat.ST_SIZE] - ctime = s[stat.ST_CTIME] mtime = s[stat.ST_MTIME] + ctime = s[stat.ST_CTIME] now = time.time() c = self.cursor @@ -416,9 +419,9 @@ class MagicFolderDB(BackupDB): self.connection.commit() def is_new_file_time(self, path, relpath_u): - """is_new_file_time returns true if the file is recent... - meaning its current statinfo (i.e. size, ctime, and mtime) matched the statinfo - that was previously stored in the db. + """ + Returns true if the file's current pathinfo (size, mtime, and ctime) has + changed from the pathinfo previously stored in the db. """ path = abspath_expanduser_unicode(path) s = os.stat(path) diff --git a/src/allmydata/util/fileutil.py b/src/allmydata/util/fileutil.py index 4c3ea0a6..d1e3d616 100644 --- a/src/allmydata/util/fileutil.py +++ b/src/allmydata/util/fileutil.py @@ -629,7 +629,7 @@ else: except EnvironmentError: reraise(ConflictError) -PathInfo = namedtuple('PathInfo', 'isdir isfile islink exists size ctime mtime') +PathInfo = namedtuple('PathInfo', 'isdir isfile islink exists size mtime ctime') def get_pathinfo(path_u): try: @@ -640,8 +640,8 @@ def get_pathinfo(path_u): islink=stat.S_ISLNK(mode), exists=True, size =statinfo.st_size, - ctime =statinfo.st_ctime, mtime =statinfo.st_mtime, + ctime =statinfo.st_ctime, ) except OSError as e: if e.errno == ENOENT: @@ -650,7 +650,7 @@ def get_pathinfo(path_u): islink=False, exists=False, size =None, - ctime =None, mtime =None, + ctime =None, ) raise