def _hardlinkDup(self, path, chksum, cursor):
if not os.path.islink(path):
pathInode = os.stat(path).st_ino
links = []
cursor.execute(
"select path from files where chksum = ? and path != ? and symlink = 0;",
(chksum, path))
# i.e. find all different files with the same checksum
for row in cursor:
(link, ) = row
if os.stat(link).st_ino != pathInode:
links.append(
link
) # only hardlink files that don't point at the same inode
if len(links) > 0:
# let's assume that an existing entry is newer than this one. Otherwise, we are constantly
# relinking files
canonicalLink = links[0]
del links[0]
links.append(path)
# clean up any links with different inodes
for link in links:
cursor.execute(LINK_UPDATE, (1, link))
linkFile(canonicalLink, link)
def testLinkSymlink(self): link = "sha1link.txt" fsu.symlinkFile(self._sha1file, link) self.assertSymlink(link) # try to hard link link; this should be a no-op fsu.linkFile(self._sha1file, link) self.assertSymlink(link) self.assertUnlinked(link)
def testLinkFile(self): link = "sha1hardlink.txt" fsu.linkFile(self._sha1file, link) self.assertLink(link) # link again, just to make sure it won't fail fsu.linkFile(self._sha1file, link) self.assertLink(link) self.assertUnlinked(link)
def testLinkFileBad(self):
self.assertRaises(OSError, lambda: fsu.linkFile(None, None))
self.assertRaises(OSError, lambda: fsu.linkFile("", ""))
self.assertRaises(OSError, lambda: fsu.linkFile(None, ""))
self.assertRaises(OSError, lambda: fsu.linkFile("", None))
self.assertRaises(OSError, lambda: fsu.linkFile(self._sha1file, ""))
self.assertRaises(OSError, lambda: fsu.linkFile(self._sha1file, None))
def _hardlinkDup(self, path, chksum, cursor):
if not os.path.islink(path):
pathInode = os.stat(path).st_ino
links = []
cursor.execute("select path from files where chksum = ? and path != ? and symlink = 0;",
(chksum, path))
# i.e. find all different files with the same checksum
for row in cursor:
(link, ) = row
if os.stat(link).st_ino != pathInode:
links.append(link) # only hardlink files that don't point at the same inode
if len(links) > 0:
# let's assume that an existing entry is newer than this one. Otherwise, we are constantly
# relinking files
canonicalLink = links[0]
del links[0]
links.append(path)
# clean up any links with different inodes
for link in links:
cursor.execute(LINK_UPDATE, (1, link))
linkFile(canonicalLink, link)