commit - 5129baa3c338a573e4056f27d639646733a673be
commit + ff714ba6db9719a6ba8d35ec3452d88db111b933
blob - c4f8fe2df73779b46df0d1e6ad4d2c86c17f0613
blob + c290473511f62e2923008c4432bfe3f01e65ebad
--- TODO
+++ TODO
@@ -20,3 +20,10 @@
    could use setpassent(3) and setgroupent(3), but if they change in the
    meantime we can't do anything.  Another solution would be to not
    to chroot(2) and just switch to the targeted user.
+
+ - find a way to avoid opening directories twice.  During a walk
+   we open the directories, but if later we try to open that fid,
+   we end up re-opening the same directory again!  It's not easy
+   to avoid because we need to fdopendir(3) and upon closedir it'll
+   close the file descriptor, while the same file descriptor could
+   be shared with other fids (f->dir is a shared read-only resource).