def rename(self, path, path1):
logging.info('rename: '+path)
try:
frs = self.find_nonfiles_by_path(path, 'file')
if frs[0] == 'dir':
logging.error('rename on dir is not supported yet: '+path+' to '+path1)
return -errno.ENOSYS
if frs[0] == 'file':
logging.info('rename from ' + path + ' to ' + path1)
tags0 = tagfsutils.path2tags(path, 'file')[1]
tags1 = tagfsutils.path2tags(path1, 'file')[1]
f = self.tdb.files[frs[1][0]]
if tags1[-1] != tags0[-1]:
logging.info('rename from '+self.lldir+f.getfullname()+' to '+self.lldir+f.fuuid+'_'+tags1[-1])
os.rename(self.lldir+f.getfullname(), self.lldir+f.fuuid+'_'+tags1[-1])
f.fname = tags1[-1]
rmtags = list(set(tags0[0:-1]) - set(tags1[0:-1]))
addtags = list(set(tags1[0:-1]) - set(tags0[0:-1]))
try:
self.tdb.change_file_tags(f.fuuid, rmtags, addtags)
self.tdb.store_db(self.lldir+TagDB.DefaultMetaDBFile)
except Exception as e:
logging.error('change file tag failed from +'+str(addtags)+' -'+str(rmtags))
os.rename(self.lldir+f.fuuid+'_'+tags0[-1], self.lldir+f.fuuid+'_'+tags1[-1])
raise e
else:
logging.error('rename fault error')
return -errno.EFAULT
except Exception as e:
logging.error('rename error'+str(e))
return -errno.ENOENT
def add_tags_by_path(self, path):
tset = tagfsutils.path2tags(path, 'dir')[1]
self.logger.info('add tags by path: '+str(tset))
# TODO: check unique for tags!!! IMPORTANT TODO
for t in tset:
if t not in self.tags:
self.tags[t] = {}
def getxattr(self, path, name, size):
if name != 'tags':
return -errno.ENODATA # should be -errno.ENOATTR
tags = ''
if path == '/':
tags = '/'.join([t for t in self.tdb.tags.keys() if t != '/'])
else:
try:
fs = self.find_nonfiles_by_path(path)
except (TagDB.NoTagException, TagDB.NoFileException):
logging.error('getxattr: no ent ' + path)
return -errno.ENOENT
if fs[0] == 'dir':
if len(fs[1]) != 0:
pts = set(tagfsutils.path2tags(path, 'dir')[1])
# make sure lambda be executed at least once and also for first time call
ts = reduce(
lambda irt, f: irt | set(self.tdb.files[f[0]].tags) -
pts, [set()] + fs[1])
tags = '/'.join(ts)
else:
f = self.tdb.files[fs[1][0]]
tags = '/'.join(f.tags)
if size == 0:
# tags string size
return len(tags)
return tags
def getxattr(self, path, name, size):
if name != 'tags':
return -errno.ENODATA # should be -errno.ENOATTR
tags = ''
if path == '/':
tags = '/'.join([t for t in self.tdb.tags.keys() if t != '/'])
else:
try:
fs = self.find_nonfiles_by_path(path)
except (TagDB.NoTagException, TagDB.NoFileException):
logging.error('getxattr: no ent '+path)
return -errno.ENOENT
if fs[0] == 'dir':
if len(fs[1]) != 0:
pts = set(tagfsutils.path2tags(path, 'dir')[1])
# make sure lambda be executed at least once and also for first time call
ts = reduce(lambda irt,f: irt | set(self.tdb.files[f[0]].tags)-pts, [set()]+fs[1])
tags = '/'.join(ts)
else:
f = self.tdb.files[fs[1][0]]
tags = '/'.join(f.tags)
if size == 0:
# tags string size
return len(tags)
return tags
def rename(self, path, path1):
logging.info('rename: ' + path)
try:
frs = self.find_nonfiles_by_path(path, 'file')
if frs[0] == 'dir':
logging.error('rename on dir is not supported yet: ' + path +
' to ' + path1)
return -errno.ENOSYS
if frs[0] == 'file':
logging.info('rename from ' + path + ' to ' + path1)
tags0 = tagfsutils.path2tags(path, 'file')[1]
tags1 = tagfsutils.path2tags(path1, 'file')[1]
f = self.tdb.files[frs[1][0]]
if tags1[-1] != tags0[-1]:
logging.info('rename from ' + self.lldir +
f.getfullname() + ' to ' + self.lldir +
f.fuuid + '_' + tags1[-1])
os.rename(self.lldir + f.getfullname(),
self.lldir + f.fuuid + '_' + tags1[-1])
f.fname = tags1[-1]
rmtags = list(set(tags0[0:-1]) - set(tags1[0:-1]))
addtags = list(set(tags1[0:-1]) - set(tags0[0:-1]))
try:
self.tdb.change_file_tags(f.fuuid, rmtags, addtags)
self.tdb.store_db(self.lldir + TagDB.DefaultMetaDBFile)
except Exception as e:
logging.error('change file tag failed from +' +
str(addtags) + ' -' + str(rmtags))
os.rename(self.lldir + f.fuuid + '_' + tags0[-1],
self.lldir + f.fuuid + '_' + tags1[-1])
raise e
else:
logging.error('rename fault error')
return -errno.EFAULT
except Exception as e:
logging.error('rename error' + str(e))
return -errno.ENOENT
def rm_file_tags_by_path(self, fuuid, path):
tset = tagfsutils.path2tags(path, 'file')[1]
del tset[-1]
self.__rm_ftags(fuuid, tset)
f = self.files[fuuid]
if not self.check_unique_file(f.tags, f.fname, True):
self.logger.error('not unique in rm file tags by path'+str(f.tags))
self.__undo_rm_ftags(fuuid, tset)
raise NoUniqueTagException(
'Can not make file unique if remove tags. ' \
+ 'file: ' + fuuid + ' tags: ' + str(tset), tset)
#if path != '/':
#if len(f.tags) == 0:
#self.tags['/'][fuuid] = f
if len(f.tags) == 0 and fuuid not in self.tags['/']:
del self.files[fuuid]
return (True, f.getfullname())
return (False,)
def mknod(self, path, mode, dev):
logging.info('Create new inode: ' + path)
ftags_rs = tagfsutils.path2tags(path, 'file')
if ftags_rs[0] == 'file':
logging.info('Want to create a file')
ftags = ftags_rs[1][0:-1]
fname = ftags_rs[1][-1]
import uuid
fuuid = uuid.uuid4().hex
try:
self.tdb.add_file(fuuid, fname, ftags)
except:
logging.error('Want create a file that conflicts with tags')
e = OSError()
e.errno = errno.EEXIST # (TODO: find a correct errno)
raise e
else:
logging.info('Want to create a dir')
self.mkdir(path, mode)
self.tdb.store_db(self.lldir + TagDB.DefaultMetaDBFile)
def mknod(self, path, mode, dev):
logging.info('Create new inode: '+path)
ftags_rs = tagfsutils.path2tags(path, 'file')
if ftags_rs[0] == 'file':
logging.info('Want to create a file')
ftags = ftags_rs[1][0:-1]
fname = ftags_rs[1][-1]
import uuid
fuuid = uuid.uuid4().hex
try:
self.tdb.add_file(fuuid, fname, ftags)
except:
logging.error('Want create a file that conflicts with tags')
e = OSError()
e.errno = errno.EEXIST # (TODO: find a correct errno)
raise e
else:
logging.info('Want to create a dir')
self.mkdir(path, mode)
self.tdb.store_db(self.lldir+TagDB.DefaultMetaDBFile)
def rm_tags_by_path(self, path):
tset = tagfsutils.path2tags(path, 'dir')[1]
for t in tset:
if len(self.tags[t]) == 0:
del self.tags[t]
def __init__(self, path, flags, *mode):
logging.info('open: ' + path + ' flags: ' + str(flags))
self.tagfs = TagFS.cur_tagfs
self.path = path
self.flags = flags
self.mode = mode
self.direct_io = True
self.keep_cache = False
try:
# can a directory be opened? Yes, but when reading, errors are there.
f = self.tagfs.find_nonfiles_by_path(path)
if f[0] == 'dir':
self.filetype = 'dir'
self.dircont = f[1]
if f[0] == 'file':
self.filetype = 'file'
self.file = os.fdopen(
os.open(
self.tagfs.lldir +
self.tagfs.tdb.files[f[1][0]].getfullname(), flags,
*mode), _flags2mode(flags))
self.fd = self.file.fileno()
except (TagDB.NoTagException, TagDB.NameConflictionException):
e = OSError()
e.errno = errno.ENOENT
logging.error('open: no tag: ' + path + ' flags: ' +
str(flags))
raise e
except TagDB.NoUniqueTagException:
# System error: no unique id for path/file
logging.error(
'System error: no unique id for path/file: path=' + path)
e = OSError()
e.errno = errno.ENOENT
raise e
except TagDB.NoFileException:
logging.info('Create new file')
if flags | os.O_CREAT == flags:
ftags_rs = tagfsutils.path2tags(path, 'file')
if ftags_rs[0] != 'file':
logging.error('Want to create a directory')
e = OSError()
e.errno = errno.EISDIR # (TODO: check the correct errno)
raise e
ftags = ftags_rs[1][0:-1]
fname = ftags_rs[1][-1]
import uuid
fuuid = uuid.uuid4().hex
try:
logging.info('add file: ' + fname + ' ' + str(ftags))
self.tagfs.tdb.add_file(fuuid, fname, ftags)
self.file = os.fdopen(
os.open(
self.tagfs.lldir +
self.tagfs.tdb.files[fuuid].getfullname(),
flags, *mode), _flags2mode(flags))
self.fd = self.file.fileno()
self.filetype = 'file'
except TagDB.NoUniqueTagException as ne:
logging.error(
'Want create a file that conflicts with tags' +
ne.msg)
e = OSError()
e.errno = errno.EEXIST # (TODO: find a correct errno)
raise e
else:
e = OSError()
e.errno = errno.ENOENT
raise e
def __init__(self, path, flags, *mode):
logging.info('open: '+path + ' flags: '+str(flags))
self.tagfs = TagFS.cur_tagfs
self.path = path
self.flags = flags
self.mode = mode
self.direct_io = True
self.keep_cache = False
try:
# can a directory be opened? Yes, but when reading, errors are there.
f = self.tagfs.find_nonfiles_by_path(path)
if f[0] == 'dir':
self.filetype = 'dir'
self.dircont = f[1]
if f[0] == 'file':
self.filetype = 'file'
self.file = os.fdopen(os.open(
self.tagfs.lldir + self.tagfs.tdb.files[f[1][0]].getfullname(),
flags, *mode), _flags2mode(flags))
self.fd = self.file.fileno()
except (TagDB.NoTagException, TagDB.NameConflictionException):
e = OSError()
e.errno = errno.ENOENT
logging.error('open: no tag: '+path+' flags: '+str(flags))
raise e
except TagDB.NoUniqueTagException:
# System error: no unique id for path/file
logging.error('System error: no unique id for path/file: path='+path)
e = OSError()
e.errno = errno.ENOENT
raise e
except TagDB.NoFileException:
logging.info('Create new file')
if flags | os.O_CREAT == flags:
ftags_rs = tagfsutils.path2tags(path, 'file')
if ftags_rs[0] != 'file':
logging.error('Want to create a directory')
e = OSError()
e.errno = errno.EISDIR # (TODO: check the correct errno)
raise e
ftags = ftags_rs[1][0:-1]
fname = ftags_rs[1][-1]
import uuid
fuuid = uuid.uuid4().hex
try:
logging.info('add file: '+fname+' '+str(ftags))
self.tagfs.tdb.add_file(fuuid, fname, ftags)
self.file = os.fdopen(os.open(
self.tagfs.lldir + self.tagfs.tdb.files[fuuid].getfullname(),
flags, *mode), _flags2mode(flags))
self.fd = self.file.fileno()
self.filetype = 'file'
except TagDB.NoUniqueTagException as ne:
logging.error('Want create a file that conflicts with tags'+ne.msg)
e = OSError()
e.errno = errno.EEXIST # (TODO: find a correct errno)
raise e
else:
e = OSError()
e.errno = errno.ENOENT
raise e
