Hello, No ideas about this? =( Any kind of tip would be really appreciated =) thanks, Felipe Monteiro de Carvalho On Wed, Aug 27, 2014 at 12:20 PM, Felipe Monteiro de Carvalho <felipemonteiro.carvalho@xxxxxxxxx> wrote: > Hello, > > I am writing a program that reads XFS partitions and I am having > trouble with some dir listings. In some directories in the block that > starts with XD2B there is first the list of all directory items, which > I read without problems, and then there is a free item, for example: > > xfs_dir2_data_unused > freetag -> XFS_DIR2_DATA_FREE_TAG */ > length -> 9A0 > tag -> zero > > But after this free item there is still room in the block, so my > program will try to read the next item. I cannot stop the reading > because it is possible to have valid items, then a free item and then > more valid items. > > The next item start might be something like: > > 00 00 00 2E 00 00 00 02 16 > > So it is not a free item, as it doesn't start with FF = XFS_DIR2_DATA_FREE_TAG > But it isn't valid either, as its name is a bunch of trash =( > > So my questions are: > 1> What are those ghost items in the end of the block? > 2> Which criteria should be utilized to differentiate them from valid > items? I tried some guesses but nothing really works so far... > > Here are screenshots of the actual data involved, here showing the > item with XFS_DIR2_DATA_FREE_TAG: > > http://magnifier.sourceforge.net/temp/xfs/xfs_dir_listing_XD2B_FREE_item.png > > And here showing the area in the end of the block with wierd items: > > http://magnifier.sourceforge.net/temp/xfs/xfs_dir_listing_XD2B_after_FREE.png > > thanks for any tips =) > -- > Felipe Monteiro de Carvalho -- Felipe Monteiro de Carvalho _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
