³ò OÉcIc@sdZddklZddkZddkZddkZddkZddkZddkZddk Z ddk Z ddk Z ddk Z ddk Z ddkZddkZddkZddkZddkZdadadefd„ƒYZd„Zd„Zd„Zd „Zd „Zd „Zd „Zd „Zdei fd„ƒYZ!de i"fd„ƒYZ#d„Z$dS(s±Code for reverting the rdiff-backup directory to prev state This module is used after an aborted session, and the rdiff-backup destination directory may be in-between states. In this situation we need to bring back the directory as it was after the last successful backup. The basic strategy is to restore all the attributes from the metadata file (which we assume is intact) and delete the extra increments. For regular files we examine the mirror file and use the increment file to get the old data if the mirror file is out of date. Currently this does not recover hard links. This may make the regressed directory take up more disk space, but hard links can still be recovered. iÿÿÿÿ(t generatorsNtRegressExceptioncBseZdZRS(s*Raised on any exception in regress process(t__name__t __module__t__doc__(((s9/var/lib/python-support/python2.5/rdiff_backup/regress.pyR1scCstiidƒ}|idjo|idjpt‚|iƒo |iƒpt‚|i|ijo tijnpt‚tƒ\}}t ƒt |ƒt i t gƒ}x't||ƒD]}||i|ƒqÊW|iƒ|otiƒ|iƒndS(s:Bring mirror and inc directory back to regress_to_time Also affects the rdiff-backup-data directory, so Globals.rbdir should be set. Regress should only work one step at a time (i.e. don't "regress" through two separate backup sets. This function should be run locally to the rdiff-backup-data directory. t incrementsN(((tGlobalstrbdirt append_pathtindextAssertionErrortisdirtconntlocal_connectiontset_regress_timetset_restore_timest regress_rbdirtrorpitertIterTreeReducert RegressITRBtiterate_meta_rfstFinishtCtsynctdelete(t mirror_rpt inc_rpathtmanagertformer_current_mirror_rptITRtrf((s9/var/lib/python-support/python2.5/rdiff_backup/regress.pytRegress6s '!.   cCstiƒ}|idƒ}t|ƒdjptdt|ƒ‚|d}|diƒa|iƒati dt i tƒdƒ||fS(s¥Set global regress_time to previous sucessful backup If there are two current_mirror increments, then the last one corresponds to a backup session that failed. tcurrent_mirroris)Found %s current_mirror flags, expected 2iisRegressing to i( tmetadatat SetManagertsorted_prefix_inclisttlenR t getinctimet regress_timetunsuccessful_backup_timetlogtLogtTimet timetopretty(Rt curmir_incstmirror_rp_to_delete((s9/var/lib/python-support/python2.5/rdiff_backup/regress.pyRMs   cCstti_tti_dS(s´Set _rest_time and _mirror_time in the restore module _rest_time (restore time) corresponds to the last successful backup time. _mirror_time is the unsuccessful backup time. N(R'trestoret MirrorStructt _mirror_timeR&t _rest_time(((s9/var/lib/python-support/python2.5/rdiff_backup/regress.pyR_s cCs9d \}}xl|itD]]}|iƒdjoD|iƒdjo d}qw|iƒdjp t|‚d}qqW|o| ot|ƒnxM|itD]>}|iƒdjo%tid|i dƒ|i ƒq¦q¦WxJ|itD];}|iƒdjo"|iƒdjo|i ƒPqöqöWd S( s¡Delete the increments in the rdiff-backup-data directory Returns the former current mirror rp so we can delete it later. All of the other rp's should be deleted before the actual regress, to clear up disk space the rest of the procedure may need. Also, in case the previous session failed while diffing the metadata file, either recreate the mirror_metadata snapshot, or delete the extra regress_time diff. itmirror_metadatatsnapshotitdiffR sDeleting old diff at iN(ii( t timerpmapR&tgetincbase_strt getinctypeR t recreate_metaR'R(R)tpathR(t meta_managert has_meta_difft has_meta_snaptold_rptnew_rptrp((s9/var/lib/python-support/python2.5/rdiff_backup/regress.pyRis*   csätitiƒg‰‡fd†}tiˆddddd|ƒ}x'|itdƒD]}|i |ƒqYW|i ƒtii dt i tƒƒ}|iƒ p t|‚tiˆd|ƒtiotiiƒndS(sÍMake regress_time mirror_metadata snapshot by patching We write to a tempfile first. Otherwise, in case of a crash, it would seem we would have an intact snapshot and partial diff, not the reverse. cs|ˆd"s"0       b