Exemple #1
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	def end_process(self):
		"""Finish processing directory"""
		if self.dir_update:
			assert self.base_rp.isdir()
			rpath.copy_attribs(self.dir_update, self.base_rp)

			if (Globals.process_uid != 0 and
					self.dir_update.getperms() % 01000 < 0700):
				# Directory was unreadable at start -- keep it readable
				# until the end of the backup process.
				self.base_rp.chmod(0700 | self.dir_update.getperms())
Exemple #2
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	def patch_to_temp(self, basis_rp, diff_rorp, new):
		"""Patch basis_rp, writing output in new, which doesn't exist yet

		Returns true if able to write new as desired, false if
		UpdateError or similar gets in the way.

		"""
		if diff_rorp.isflaglinked():
			self.patch_hardlink_to_temp(diff_rorp, new)
		elif diff_rorp.get_attached_filetype() == 'snapshot':
			result = self.patch_snapshot_to_temp(diff_rorp, new)
			if not result: return 0
			elif result == 2: return 1 # SpecialFile
		elif not self.patch_diff_to_temp(basis_rp, diff_rorp, new):
			return 0
		if new.lstat() and not diff_rorp.isflaglinked():
			rpath.copy_attribs(diff_rorp, new)
		return self.matches_cached_rorp(diff_rorp, new)
Exemple #3
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	def patch_snapshot_to_temp(self, diff_rorp, new):
		"""Write diff_rorp to new, return true if successful

		Returns 1 if normal success, 2 if special file is written,
		whether or not it is successful.  This is because special
		files either fail with a SpecialFileError, or don't need to be
		compared.

		"""
		if diff_rorp.isspecial():
			self.write_special(diff_rorp, new)
			rpath.copy_attribs(diff_rorp, new)
			return 2
		
		report = robust.check_common_error(self.error_handler, rpath.copy,
										   (diff_rorp, new))
		if isinstance(report, hash.Report):
			self.CCPP.update_hash(diff_rorp.index, report.sha1_digest)
			return 1
		return report != 0 # if == 0, error_handler caught something
Exemple #4
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	def restore_orig_regfile(self, rf):
		"""Restore original regular file

		This is the trickiest case for avoiding information loss,
		because we don't want to delete the increment before the
		mirror is fully written.

		"""
		assert rf.metadata_rorp.isreg()
		if rf.mirror_rp.isreg():
			tf = TempFile.new(rf.mirror_rp)
			tf.write_from_fileobj(rf.get_restore_fp())
			tf.fsync_with_dir() # make sure tf fully written before move
			rpath.copy_attribs(rf.metadata_rorp, tf)
			rpath.rename(tf, rf.mirror_rp) # move is atomic
		else:
			if rf.mirror_rp.lstat(): rf.mirror_rp.delete()
			rf.mirror_rp.write_from_fileobj(rf.get_restore_fp())
			rpath.copy_attribs(rf.metadata_rorp, rf.mirror_rp)
		if Globals.fsync_directories:
			rf.mirror_rp.get_parent_rp().fsync() # force move before inc delete
Exemple #5
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    def restore_orig_regfile(self, rf):
        """Restore original regular file

		This is the trickiest case for avoiding information loss,
		because we don't want to delete the increment before the
		mirror is fully written.

		"""
        assert rf.metadata_rorp.isreg()
        if rf.mirror_rp.isreg():
            tf = TempFile.new(rf.mirror_rp)
            tf.write_from_fileobj(rf.get_restore_fp())
            tf.fsync_with_dir()  # make sure tf fully written before move
            rpath.copy_attribs(rf.metadata_rorp, tf)
            rpath.rename(tf, rf.mirror_rp)  # move is atomic
        else:
            if rf.mirror_rp.lstat(): rf.mirror_rp.delete()
            rf.mirror_rp.write_from_fileobj(rf.get_restore_fp())
            rpath.copy_attribs(rf.metadata_rorp, rf.mirror_rp)
        if Globals.fsync_directories:
            rf.mirror_rp.get_parent_rp().fsync(
            )  # force move before inc delete
Exemple #6
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	def end_process(self):
		"""Finish processing a directory"""
		rf = self.rf
		if rf.metadata_rorp.isdir():
			if rf.mirror_rp.isdir():
				rf.mirror_rp.setdata()
				if not rf.metadata_rorp.equal_loose(rf.mirror_rp):
					log.Log("Regressing attributes of " + rf.mirror_rp.path, 5)
					rpath.copy_attribs(rf.metadata_rorp, rf.mirror_rp)
			else:
				rf.mirror_rp.delete()
				log.Log("Regressing file " + rf.mirror_rp.path, 5)
				rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
		else: # replacing a dir with some other kind of file
			assert rf.mirror_rp.isdir()
			log.Log("Replacing directory " + rf.mirror_rp.path, 5)
			if rf.metadata_rorp.isreg(): self.restore_orig_regfile(rf)
			else:
				rf.mirror_rp.delete()
				rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
		if rf.regress_inc:
			log.Log("Deleting increment " + rf.regress_inc.path, 5)
			rf.regress_inc.delete()
Exemple #7
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 def end_process(self):
     """Finish processing a directory"""
     rf = self.rf
     if rf.metadata_rorp.isdir():
         if rf.mirror_rp.isdir():
             rf.mirror_rp.setdata()
             if not rf.metadata_rorp.equal_loose(rf.mirror_rp):
                 log.Log("Regressing attributes of " + rf.mirror_rp.path, 5)
                 rpath.copy_attribs(rf.metadata_rorp, rf.mirror_rp)
         else:
             rf.mirror_rp.delete()
             log.Log("Regressing file " + rf.mirror_rp.path, 5)
             rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
     else:  # replacing a dir with some other kind of file
         assert rf.mirror_rp.isdir()
         log.Log("Replacing directory " + rf.mirror_rp.path, 5)
         if rf.metadata_rorp.isreg(): self.restore_orig_regfile(rf)
         else:
             rf.mirror_rp.delete()
             rpath.copy_with_attribs(rf.metadata_rorp, rf.mirror_rp)
     if rf.regress_inc:
         log.Log("Deleting increment " + rf.regress_inc.path, 5)
         rf.regress_inc.delete()